Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 07-24-2020, 03:57 AM   #1
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default PCV VALVE SYSTEM for 8BA with Early Intake Manifold

More and more these days, hobbyists are choosing to use a 1949 through 1953 8BA-type block for their flathead engine build. Many of the folks doing so are also opting to use an early style (prior to 1949) intake manifold on their new combination. Either of the two different iterations of manifolds will bolt-on to the newer blocks, and there are two or three good reasons that some people have decided to use an early intake on a later engine. Problem is that the two different engines were internally designed to accomplish crankcase ventilation via two DIFFERENT methods, and the design of the intake manifolds is very much involved in that process. So, the subject comes-up frequently addressing the necessity to relieve crankcase pressure with this hybrid block/intake combination, as well as the desire to evacuate at least some of the miniscule yuckleberries that are produced as a result of the internal combustion process. If many of these impurities are allowed to remain inside the crankcase and polute the oil, they usually lead to the eventual formation of sludge on the internal engine surfaces. Piston blowby produces pressures in the crankcase which if not relieved, will at the very least cause severe oil leaks at several gasket locations, and there is also the possibility of oil being blown out of the oil fill tube, not to mention the possibility that the oil pan can actually deform from internal pressure. The 'factory-stock' 8BA-type intake manifolds have provision toward the front of the manifold to mount a relatively tall tube which employs a removable BREATHER cap on top that allows an entry path for fresh air into the engine crankcase. By removing this breather cap, lubricating oil can also be poured into the crankcase. Additionally, the 8BA-type manifold has a second boss just forward of the oil fill tube to mount a 'road draft' tube. This tube serves as an exit path for crankcase vapors and pressures which build-up inside the otherwise closed crankcase as a result of the piston blowby. Below is a diagram of how a STOCK 8BA normally ventilates. So, where do we go now? 1










Eons ago, The Automakers came-up with a somewhat more-sophisticated technology for not only evacuating crankcase pressure along with sinister contaminents, but also as a method that would at least partially re-burn these crankcase gasses as a form of pollution control to save the World's atmosphere. Of course, we all know of the PCV valve by now as a precursor to more-sophisticated "smog-eradicating" systems that were yet to come. Almost every new American engine employed a PCV valve in some form by the latter part of the '60s. So, who would'a ever thunk (back then) that we might someday be seeing PCV valves on a flathead Ford engine? Well, for one thing, many 'factory' PCV valve applications have the valve mounted in a rubber-ish grommet inserted into a valve cover. Heck, any die-hard old-timer will promptly remind ya that flatheads ain't got no danged valve covers. So, what the heck here, over? What's up is that some folks a while back figured-out that a satisfactory answer to the above situation of using an early manifold on an 8BA could be accomplished by utilizing a PCV valve 'properly' plumbed and 'reasonably' engineered to restore the attributes lost when replacing the original manifold. 2


So here we are again, Heard Saxon and myself-Dick Davidson (DD), with yet another dinky idea for a contraption that will hopefully help to advance the flathead world in some small way. As I alluded-to a month or so ago, we were in the process of developing a PCV valve application for Heard's brand new, shiny 8BA with an early style Thickstun PM 7 intake manifold. Obviously, quite a few people have 'rigged', adapted...or whatever you want to call it....a PCV valve to one of these engines in the past. I never gave it much thought until Heard asked if I had any ideas on how to go about rigging-up a PCV valve to operate PROPERLY and produce the desired results. So, to have even a reasonable chance of pulling this off successfully, I decided to do a little self-education about PCV system specifics using Al Gore's World-Wide-Webb. My eyes were opened right pronto! 3


I found-out rather quickly that PCV valves work in the exact opposite fashion than I had previously believed....check the drawing/chart below! Of course, PCV valves function based on MANIFOLD vacuum produced by the engine. And you should remember that 4-cycle engines normally produce the LEAST amount of vacuum during wide-open throttle (WOT), such as during hard acceleration or 'gettin' on it'! Conversely, the HIGHEST vacuum reading will be experienced at idle, or when the vehicle is traveling on a level surface at a steady speed, and at a constant throttle setting. PCV valves usually consist of a small container with a tiny movable shuttle inside, as well as a tiny spring with varying tension values dependent upon the specific vehicle application. In general, the valve is designed such that the internal shuttle is aerodynamically shaped such that it is able to move in consideration of, and in conjunction with the airflow AND the spring's tension. My biggest mis-understanding in operation was that the valve allows the MOST flow through it as the vacuum reading is at it's lowest, as in WOT (wide-open throttle). The opposite occurs as the vacuum signal increases, like during idle.....when the internal shuttle allows the LEAST amount of flow. This really makes sense when you realize that during WOT (when vacuum is lowest, and the GREATEST flow through the valve is allowed to occur), the largest volume of blowby is being sent past the rings into the crankcase when the highest cylinder pressures are being generated. Inversely, the least cylinder pressure is being produced at idle (when the highest vacuum readings occur), meaning less blowby, and the LEAST flow through the PCV valve. 4





And concerning these PCV valves, one valve does not 'fit all'. Honestly, there's not enough 'engineer' in me to be able to determine EXACTLY what constitutes the "right choice" when it comes to making an educated decision as to which valve is correct for any particular engine. I happened to come across two different and lengthy equations that supposedly figured-into determining a correct set of parameters for the "right" valve. To me, these equations looked like the figuring that was required to set-up a space vehicle for lower Moon orbit, and return to Earth.....complicated shtuff! So, keeping in mind that these things obviously would have to operate based on the MAXIMUM vacuum value generated by the engine, as well as the POSSIBILITY that cubic inches MAY also have some bearing on all of this, I made a determination based on the facts that Heard's fine engine (built by one of our better-known FordBarn regulars in the Northeast) is 284 cubic inches and has a non-stock performance camshaft. Performance cams generally yield a lower maximum-vacuum value at idle than a stock cam does. I had already decided that we wanted to use one of those small, all-metal, early GM PCV valves with the straight through design (as seen in the pics below), both for structural rigidity reasons (we didn't want to use plastic parts), and the fact that they are sized small-enough to fit in our limited available space, plus the diameters of the two connecting points were easily adaptable to readily-available components. So, working with that 284 cu. in. figure as well as the hi-po cam, I decided to look-up the PCV valve part number used on a 1969 302 cu. in. Z-28 Chevy engine which of course, has a performance camshaft. So that's the one that we procured for this affair, and the actual part number will be shown below with all the other part numbers...........(we've already prepared your COMPLETE shopping list for you below) ! 5






It was stated on more than one occasion that MOST PCV valves will function properly ONLY when oriented or mounted vertically, or straight up and down. Most require gravity to figure into the normal operation. That really got me to thinking about how many of these valves that we've seen pictures of, or heard described as mounted horizontally underneath the intake manifold. Sounds to me like most of those are possibly not functioning correctly, if at all. Plus, when you mount one like that, you damned sure can't keep an eye on the valve, much less change it, without removing the entire intake manifold. MY opinion.....that sucks! So, I (WE) were determined (if at all possible) to rig-up a PCV valve system on this engine that made the valve accessible WITHOUT removal of the manifold, plus, any exposed parts had to be aesthetically pleasing. With that, our parameters were set. 6




And with those requirements, there aren't many options available. The idea for the most-efficient purging of the 8BA crankcase with an early intake manifold is for the fresh air to enter the breather cap on top of a custom oil-fill tube mounted in place of the stock fuel pump stand. We're going to run a remote, electric fuel pump. That air is normally drawn through the upper, rear of the valve chamber, and is drawn down into the lower crankcase. From the lower crankcase, the air is sucked-out via the removable, vertical tube that runs vertically up the front of the valve chamber. The air NORMALLY goes up into a chamber in the STOCK intake manifold and exits through the attached road draft tube that is routed outside and down below the oil pan. The air passing the open end of that road draft tube induces a suction, pulling fresh air through the entire engine crankcase chamber, relieving any built-up pressures and flushing-away the un-wanted vapors. About the only place left in our modified state to mount the PCV valve so that it will function properly, AND so that the PCV valve can be serviced without removing the manifold is to mount it inside the detachable custom oil-fill tube/spacer assembly. 7









Following is a description of our new system as applied, starting in the front of the valve chamber at the removable, vertical tube which fits tightly down into a recessed hole in the block. Heard removed that tube and cut it roughly in half, as can be judged by the picture below. The upper part will no longer be used. The lower piece will have a tapered freeze plug inserted in it's top opening. The tapered freeze plug must be drilled in it's center to accept a BULKHEAD fitting, by 3/8" COMPRESSION fitting on the opposite end. The tapered freeze plug should have the BULKHEAD fitting tightened into the freeze plug, 3/8 COMPRESSION nut pointing UP! The freeze plug should then be hammered snugly into what is now the TOP of the lower piece of the cut-off draft tube. Tap the tube/freeze plug assembly back into the designated hole in front end of valve chamber. Bend a piece of 3/8" soft copper tubing resembling the piece in the accompanying picture. Secure the inverted "U"-shaped end of copper tubing into the 3/8" compression fitting (don't forget your ferrule) mounted in the freeze plug. The remaining straight tail on the copper tubing will lie against the metal tube traversing the length of the valve chamber, secured snugly to that tube with at least two small, screw-type hose clamps. If you shape your copper tube carefully, the configuration will prevent any unlikely chance that the freeze plug would try to raise itself up and out of the big draft tube. The freeze plug is a "Dorman 555-023". The fitting through the freeze plug is described as: "Bulkhead Union 3/8 BULKHEAD COMPRESSION UNION - 18090, IMSBOLT.COM or equivqlent....about $12.00. 8
























Continued Below in Post #2!







………...
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE

Last edited by V8COOPMAN; 07-26-2020 at 03:05 AM.
V8COOPMAN is offline   Reply With Quote
Old 07-24-2020, 03:57 AM   #2
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

CONTINUED




At the rear of the engine, we need to prepare for the PCV valve itself. There are several 'key' pieces involved back there. Let's start with the custom oil-fill tube and breather cap. It's available from Speedway Motors under part # "OTB 6825", $108. This is also where you'll ad engine oil. 9







Below the breather tube is a 1" thick spacer. The spacer is necessary mostly for a surface to drill through to accommodate the special, small 90 degree bulkhead fitting that transitions from outside to downward toward the PCV valve. The spacer comes from an eBay ad, which is actually The Dashman Hot Rod & Speed Parts Co., which can be reached at: 608-637-7167. It's described as...."Fits Stromberg 97 48 Ford Holley 94 Intake Fuel Pump Riser Flathead Spacer 1".....$34.95! It's a beautiful CNC-machined piece of aluminum stock. As can be seen in the pictures, Heard carefully machined a flat surface on the inside of the piece with his milling machine, but the piece could easily be shaped with hand tools if you don't have access to a mill. 10





The next piece is a specialty 90 degree bulkhead fitting. It has a barbed nipple fitting protruding through the 3/4" hole drilled through the flat, milled surface on that spacer. The bottom side of the 90 degree fitting has a female 1/4" NPT threaded hole facing downward, which will accommodate a 1/4" NPT male X 3/8" hose barb fitting inside the spacer, pointing downward. This hose barb will accept a short piece of 3/8" fuel hose which will connect the hose barb to the 3/8" nipple on the top end of the PCV valve. This 90 degree fitting is available at Jeg's and others, described as "ICT Billet 3/8 in. Hose Barb to 1/4" female NPT Bulkhead Adapter Fitting", Jegs part number 551660. $20.49. 11














The GM PCV valve is part number "AC DELCO 19303069". Seems like it was about $7-ish. The nipple faces UP and is connected to the brass hose barb via a short piece of 3/8" fuel hose. 12




The PCV valve sits in a rubberized fitting sized to hold these GM PCV valves. It is a Dorman piece, available at parts stores under "Dorman 46038". The slender appendage on the bottom is sized to accommodate a short piece of 3/8" copper tubing, which will connect the Dorman rubber fitting to the extended-length of 3/8" fuel hose that is long enough that you will be able to unbolt and lift the spacer/breather-tube/PCV valve assembly out of the engine and service the PCV valve, WITHOUT removing the intake manifold. As the assembly is replaced back onto the intake manifold, the assembly must be twisted ONE turn, forming a one-turn loop of the hose down inside the valve chamber. Care must be taken to ensure that the hose does not come in contact with any valve springs as it is inserted. The LOWER end of the 3/8" hose is slipped over the rear end of the long piece of clamped-down copper tubing which leads forward to the freeze plug fitting. 13











The final two pieces of this contraption consist of a 1/4" NPT male X 3/8" compression fitting which threads into the pipe thread hole in the top of the common manifold chamber.....'manifold' vacuum source. The single piece of bent copper tubing is connected to the nipple extending out from the 1" spacer via a short piece of 3/8" hose. The other end at the bottom of the inverted "U"-bend is secured in the compression fitting located between the two carb risers. Clean, functional, and simple! And it might even work. It's certainly looks pretty darned decent. 14












PARTS LIST




3/8" compression bulkhead (through freeze plug): IMSBOLT.com #18090....Also at Good parts stores.
1" Aluminum Spacer...Described as "Fits Stromberg 97 48 Ford Holley 94 Intake Fuel Pump Riser Flathead Spacer 1".....$34.95! Dashman Hot Rod and Speed Parts. 608-637-7167.
PCV boot: Dorman #46038.....May have to order at O'Reilly's or good parts store.
Freeze plug: Dorman #555-023.....Good parts store.
PCV Valve: AC Delco #19303069.....Good parts store, eBay.
90 Degree thingie: Jegs #551660.....Others
3/8" NPT x 1/4" NPT male hose barb - don't have the # but easy to source - Speedway or good parts store.
3/8" compression x 1/4" NPT male - manifold fitting: don't have the # but easy to source - Speedway or good parts store.




Before we finish-up here, I should make it clear that once aagain, Heard and I co-ordinated this project long distance. He's just southwest of Daytona, and I'm located 25 miles or so northeast of downtown Houston. As usual, Heard did all the labor and got the dirty hands, did all of the running-around chasing parts, wrote all of the checks, and even took all of the pictures.. All that I do is make sure my hands stay clean, I point frequently, and I shoot-off my big mouth a lot just like most days here on the forum. In spite of my shortcomings, we still enjoyed putting all of this together, and even though neither of us is offering any kind of guarantees, we do hope that some of these ideas and part numbers might come-in handy for a couple of you's guys in the near future. ANY comments or questions are certainly welcome by either Heard or myself. I'll work on getting a link to this PCV project thread just under the "T5 W/TORQUE TUBE" link already located at the bottom, left of all of my posts for easy future reference. Dick D (DD) 16












………...
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE

Last edited by V8COOPMAN; 07-24-2020 at 04:29 AM.
V8COOPMAN is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 07-24-2020, 07:10 AM   #3
Ol' Ron
Senior Member
 
Ol' Ron's Avatar
 
Join Date: May 2010
Location: Chester Vt
Posts: 8,842
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Gota figger out how to copy this. Fantastic information. I think this is what Grandchildren is for.
Ol' Ron is offline   Reply With Quote
Old 07-24-2020, 07:26 AM   #4
Jockeyshift41
Member
 
Jockeyshift41's Avatar
 
Join Date: Mar 2020
Location: SW Florida
Posts: 51
Thumbs up Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Outstanding tutorial!! Thanks for sharing!
__________________
Al
Jockeyshift41 is offline   Reply With Quote
Old 07-24-2020, 08:29 AM   #5
flatford8
Senior Member
 
flatford8's Avatar
 
Join Date: Jan 2012
Location: Lyman,ME.
Posts: 2,612
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Nice job!!!.... thanks for the effort and for sharing it!!... I don’t want no danged yuckleberries in my motor!!!...... Mark
__________________
I'm thinkin' about crankin'
My ragged ol' truck up
and haulin' myself into town.
Billy Joe Shaver
flatford8 is offline   Reply With Quote
Old 07-24-2020, 09:52 AM   #6
Mr 42
Senior Member
 
Mr 42's Avatar
 
Join Date: May 2010
Location: Sweden
Posts: 427
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Sponsored Links (Register now to hide all advertisements)
Made a similar solution back in 2004 on my 8RT engine.
Did not use a PCV valve, my reason for this was that Volvo B18/B20 Engines, had a line from the crankcase to the intake and the hole entering the intake was around 2mm, not causing any problem for the engine and keeping the crankcase clean.
Since this was a V8 i used a 2.5mm hole.

I let the pictures do the talking.

By the way i don't own the car now , but the new owner is still driving it without problems.
Attached Images
File Type: jpg 110-1004_IMG (Large).jpg (61.6 KB, 274 views)
File Type: jpg 110-1012_IMG (Large).jpg (30.5 KB, 251 views)
File Type: jpg 110-1023_IMG (Large).jpg (41.6 KB, 249 views)
File Type: jpg 110-1029_IMG (Large).jpg (30.8 KB, 260 views)
File Type: jpg 110-1030_IMG (Large).jpg (37.5 KB, 254 views)
File Type: jpg 110-1031_IMG (Large).jpg (47.9 KB, 242 views)
File Type: jpg 111-1190_IMG (Large).jpg (78.2 KB, 258 views)
Mr 42 is offline   Reply With Quote
Old 07-24-2020, 10:37 AM   #7
vilanar
Senior Member
 
Join Date: Jan 2011
Posts: 162
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Nice tutorial, thanks for your effort.
vilanar is offline   Reply With Quote
Old 07-24-2020, 03:07 PM   #8
KiWinUS
Senior Member
 
KiWinUS's Avatar
 
Join Date: May 2010
Location: Charlotte NC KiWi-L100 available here
Posts: 2,945
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Bloody awesome mate. That’s incredibly well done Coop. Great work & thanks for the great job of sharing all the details.
Cheers
Tony
KiWinUS is offline   Reply With Quote
Old 07-24-2020, 05:29 PM   #9
cadillac512
Senior Member
 
cadillac512's Avatar
 
Join Date: Apr 2019
Location: Kansas
Posts: 897
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Well done, Coop and Heard! That's nice work,and good thinking. Should function perfectly.



Terry
__________________
"It don't take but country smarts to solve the problem" (Smokey Yunick)


'41 Merc Town Sedan / 260" 8CM engine
'66 Fairlane four door / "warmed up" 302
cadillac512 is offline   Reply With Quote
Old 07-24-2020, 07:10 PM   #10
Heard
Senior Member
 
Heard's Avatar
 
Join Date: Sep 2013
Location: Florida
Posts: 577
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Thanks fellas! Always fun doing these things and getting feedback from you guys. There is a LOT of experience on this site. WAY more than I have and I always appreciate the input.

I have to say that the most amazing thing to me about this project was the fact the Dorman freeze plug fit perfectly in that draft tube. It has the exact diameter needed.

Heard
__________________
Do I look like I have a plan B?
Heard is offline   Reply With Quote
Old 07-25-2020, 10:36 AM   #11
macdonge
Senior Member
 
macdonge's Avatar
 
Join Date: May 2015
Location: Frelighsburg, QC
Posts: 165
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Excellent write-up Coop. Now all we need is a similar one for the 59A blocks! ;-)
macdonge is offline   Reply With Quote
Old 07-25-2020, 01:58 PM   #12
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by macdonge View Post
Excellent write-up Coop. Now all we need is a similar one for the 59A blocks! ;-)

The earlier blocks seem to breathe and relieve (pressure) fairly well in stock configuration. Is it that you just like the idea of using a PCV valve to help the environment.....and to help with the purging of some of the sludge-producing crankcase yuckleberries? I could always think about it if your reasoning is strong enough. DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 07-26-2020, 05:27 AM   #13
macdonge
Senior Member
 
macdonge's Avatar
 
Join Date: May 2015
Location: Frelighsburg, QC
Posts: 165
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Yes, the environment... and the yuckleberries!


Sent from my iPhone using Tapatalk
macdonge is offline   Reply With Quote
Old 07-26-2020, 04:26 PM   #14
hotcoupe
Senior Member
 
hotcoupe's Avatar
 
Join Date: May 2010
Location: imperial,mo
Posts: 684
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Excellent presentation, thanx.
Tom
hotcoupe is offline   Reply With Quote
Old 07-27-2020, 12:24 PM   #15
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

I'm just getting into a C8BA using the newer Fenton intake. However, I don't like the looks of the road draft tube so is there a way to hook up a PCV valve and not use the road draft tube?
Fortunateson is offline   Reply With Quote
Old 07-27-2020, 07:34 PM   #16
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
I'm just getting into a C8BA using the newer Fenton intake. However, I don't like the looks of the road draft tube so is there a way to hook up a PCV valve and not use the road draft tube?
Hello Fortunate....This might be interesting, at least to YOU and me. Can you give me an exact model number for that Fenton manifold, or maybe a better description? Can we assume that it IS an intake made for the later '49-'54 engine? No mistake there, the rest of you's guys! The "C"8BA is the Canadian version, and Canuck flatheads lasted into 1954 beyond the border. Any other interesting details about your project? DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-04-2020, 09:37 PM   #17
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Hey V8C...

Sorry for the slow reply. As stated the engine is a C8BA but it's an interesting engine. When I bought the engine the seller was throwing in the Fenton intakewith three 97s and two sets of original Eddie Meyer heads (block previous to the 8BA and 8BA styles) along with a set of wire wheels that may go on one of my '47 Buicks. He claimed that th engine came out of a Mercury but it had C8BA cast into the block and we all know that that's no Merc block. Anyway, when I was tearing it down this spring it had frozen up a bit but everything unbolted really easily and the pistons freed themselves. When I pulled the crank there was the tell tale oval dimple and wider counter weight and the desired 4" stroke. This engine was never rebuilt and the heads indicated Merc. But heads are easy to swap of course. There was also the Merc cam. So I believe that at the particular time this engine was assembled in Oakville they did not have any Merc blocks ready so they just threw the Merc crank, pistons, cam, and heads on it to get it down the line.

Really didn't pay that much for it considering what I got in the bargain. A couple of cracks that will be pinned and a couple of tiny "Ford p/n" cracks as well. Machine shop has been in business since well before WWII so they are heavily experienced.

I had the cam reground by a local shop that began in the mid fifties so more experience there also!

Any way I think in the pics to follow you will see that the Fenton intake is indeed for the 8BA series of blocks. (I have another block but was confused do when I saw 0BA, or is that 1BA, cast but then found out that indicates 1950/51.).)

So getting back to my original question, any guidance for a PCV for this intake?

Last edited by Fortunateson; 08-04-2020 at 09:46 PM.
Fortunateson is offline   Reply With Quote
Old 08-04-2020, 09:45 PM   #18
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Having trouble loading pics from cell phone; something about a missing security token?
Fortunateson is offline   Reply With Quote
Old 08-05-2020, 12:11 AM   #19
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
Having trouble loading pics from cell phone; something about a missing security token?

Hello Fortunate......I was wondering where you had gotten off to. We have several items to cover here. First of all, the "security token" thing many times means the picture is too 'big' for this site. SOMETIMES, e-mailing the pics to yourself mystically takes care of re-sizing them to an appropriate size. IF after trying that the pics still won't post, try e-mailing them to me and I will attempt to post them here for you. I still need to see some of the details of the intake you're wanting to use before I can come-up with any reasonable ideas. My e-mail:


[email protected]


Of course, you realize that the "C"8BA block is a Canadian-produced version of our Yankee 8BA block. Understand that many people are surprised to hear that at least here in the States for 1949 thru 1953 automobiles, the Ford and Mercury engines shared the same identical BLOCK with each other, although each of the two brands used their own proprietary cylinder heads, intake manifold/carburetor, crankshaft, pistons, camshaft, flywheel and pressure plate, and sometimes water pumps. I won't arbitrarily state that that's ALSO the way it was in Canada, but there's no viable reason for the Canucks to have invested the phenomenal expense of tooling-up for TWO identical blocks with different ID markings. And since Mercurys are a product of the parent FoMoCo, the 'Ford' ID-nomenclature (8BA) with the Canadian "C" in front of it wins-out, I'm sure. And you are correct in assuming that "0BA" and "1BA" represent 1950 & 1951 model years respectively. One more thing....if your cylinder heads are marked "8CM", the Mercury-ONLY oil pan should look like the one below with the three studs and "L"-bracket. It'll also have a unique oil pump/pick-up and windage tray only found on the Mercs. Try e-mailing those manifold pics to yourself. If you still aren't able to post them here, e-mail them to me and we'll see what we can do. Dick D













………..
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-05-2020, 02:24 AM   #20
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Yep, that's the oil pan I have... a little different from my other one where the engine came out of truck. That one was rebuilt at one point but it doesn't have the 8RT casting mark so I presume they fitted a car block into the 1/2ton truck.

I'll be checking on the oil pump...
Fortunateson is offline   Reply With Quote
Old 08-05-2020, 11:13 AM   #21
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
Yep, that's the oil pan I have... a little different from my other one where the engine came out of truck. That one was rebuilt at one point but it doesn't have the 8RT casting mark so I presume they fitted a car block into the 1/2ton truck.

I'll be checking on the oil pump...

Remember this one rule: SAME BLOCK...Ford, Mercury, truck or automobile!


Here is that oh-so-rare (hard to replace) Mercury oil pump 'pick-up' assembly that goes with that oil pan. DD

















…………………….
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-05-2020, 11:58 AM   #22
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

I knew about "the same block for all!" company edict which makes sense except for the different block identification marks. Now that oil pump doesn't look familiar. If I use the Merc oil pan is it essential to use that pump or would theFord pump work OK? I do have the truck oil pan...
Fortunateson is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-05-2020, 01:32 PM   #23
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
I knew about "the same block for all!" company edict which makes sense except for the different block identification marks. Now that oil pump doesn't look familiar. If I use the Merc oil pan is it essential to use that pump or would theFord pump work OK? I do have the truck oil pan...

It's the pump 'PICK-UP' and the attached, round baffle that are the oddballs. These pics show how the round baffle fits snugly into the round hole in the MERCURY pan baffle. The pumps are essentially the same, physically. What kind of car are you putting this in? ALSO, what type of transmission are you going to bolt-up to? One more thing to remember....you can use whichever oil pan you choose, but you MUST have and utilize that pan's MATCHING 'starter plate'. DD























………………………..
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-05-2020, 02:14 PM   #24
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

The engine will be going into my '32 5W. Have the starter plates for both engines along with everything else. Can the Ford oil pump be used in the Merc pan?

By the way I hade the extra Ford cam reground to a Isky Max1 twin by Shadbolts cam service here in Vancouver for a very reasonable price. I thought it would be better to save the Merc cam.
Fortunateson is offline   Reply With Quote
Old 08-06-2020, 04:12 PM   #25
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
The engine will be going into my '32 5W. Have the starter plates for both engines along with everything else. Can the Ford oil pump be used in the Merc pan?

You MAY (or may not) have to trim that baffle in the Mercury pan to clear the Ford pick-up tube. You also should beware of the possible difference in proximity of the Ford pick-up with the bottom of the Merc pan. Do you know if that "Merc" engine does IN FACT have the Merc oil pick-up? If it does, I'd say that IS likely a REAL Merc engine.


Are you using an old Ford 3-speed trans? DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-13-2020, 12:24 AM   #26
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Sponsored Links (Register now to hide all advertisements)
Been busy again but better late in replying than never...

I believe both engines have the same oil pickup but have to 2x check. The tranny is a post war truck which will be converted to closed drive. I need the main shaft and possibly second gear if I want to use my LZ setup. I've read pros and cons on this. Rear end is 3.78.
Fortunateson is offline   Reply With Quote
Old 08-13-2020, 08:40 AM   #27
19Fordy
Senior Member
 
19Fordy's Avatar
 
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,879
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

V8 and Heard: You guys are a great team. Thank you very much for all that hands on research and posting a truly exceptional tech article. Taking the time to take photos and then your detailed and clear explanation sure makes this an exceptional piece of info.
You hit a grand slam.
19Fordy is offline   Reply With Quote
Old 08-13-2020, 02:18 PM   #28
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by 19Fordy View Post
V8 and Heard: You guys are a great team. Thank you very much for all that hands on research and posting a truly exceptional tech article. Taking the time to take photos and then your detailed and clear explanation sure makes this an exceptional piece of info.
You hit a grand slam.

Awe shucks, Jim! Coming from you, that is VERY much appreciated!


Dick D (DD)
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-13-2020, 02:26 PM   #29
Ol' Ron
Senior Member
 
Ol' Ron's Avatar
 
Join Date: May 2010
Location: Chester Vt
Posts: 8,842
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

I agree.
Ol' Ron is offline   Reply With Quote
Old 08-13-2020, 02:47 PM   #30
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
Been busy again but better late in replying than never...

I believe both engines have the same oil pickup but have to 2x check. The tranny is a post war truck which will be converted to closed drive. I need the main shaft and possibly second gear if I want to use my LZ setup. I've read pros and cons on this. Rear end is 3.78.

The DIFFERENT oil pick-ups are each shaped to work with the different pan configurations for different applications, like Ford cars, Ford trucks, Mercurys….all use differently-configured oil pans. In fact, this list below from Mac VanPelt's catalog shows the number of different 8BA-type oil pans.


8BA- 6675-C Oil Pan (49-50 Ford V8) - Mid sump - horizontal drain plug
1BA- 6675-A Oil Pan (51 Ford V8) - angled drain plug
1BA- 6675-C Oil Pan (52 Ford V8) - Mid sump - angled drain plug - 2 side ribs
1BA- 6675-D Oil Pan (52-53 Ford V8) - Mid sump - angled drain plug - 3 side ribs
8CM- 6675-C Oil Pan (49-51 Merc) - Rear sump - stud reinforcement at bottom)
1M- 6675 Oil Pan (51 Merc) - Rear sump - w/o stud reinforcement at bottom)
AE- 6675-A Oil Pan (52-53 Merc) - Mid sump - rear drain plug - 3 side ribs
8RT- 6675-B Oil Pan (48-53 Truck V8) - rear sump with cleanout
8RT- 6675-D Oil Pan (53 Truck V8) - long rear to mid sump without cleanout


The Lincoln-Zephyr gear sets require their own, unique 2nd gears and cluster gears. DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-13-2020, 03:45 PM   #31
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

That's a heck of a lot of oil pans! I have what came with each engine. I'll try to look at the Merc pan today.

I have the LZ cluster gears in great shape. Second may just need a little judicious filing but the main shaft has one tooth removed better than a dentist could do!

Last edited by Fortunateson; 08-14-2020 at 01:06 AM.
Fortunateson is offline   Reply With Quote
Old 08-14-2020, 12:06 PM   #32
blucar
Senior Member
 
blucar's Avatar
 
Join Date: Jul 2010
Location: Ventura, CA
Posts: 2,464
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Excellent write up with a lot of work to solve a very simple problem; how to get good ventilation into an engine.
The one problem I see with placing the PCV adjacent to the oil fill tube is that in order for crankcase ventilation to work you have to have a fresh air source that is drawn through the engine and into the intake manifold to be burnt off in lieu of escaping into the atmosphere.
Placing the PCV so close to the fresh-air source will draw the fresh air into the PCV and not through the engine.
Placing the PCV into the manifold in front of the carb will create a better path/route for air circulation with-in the engine.
I like the PCV system that the '63-64 292 V8 truck engines used. The rear draft tube is eliminated in favor of a metal bonnet that fits into the block, a line runs from there to a location in front of the carb. The PCV screws into a hole in the manifold. Fresh air is drawn into the engine block via the oil fill pipe at the front of the engine.
I have attached a couple oCV system on my '57 T-Bird..
Attached Images
File Type: jpg 57 312 PCV.jpg (41.1 KB, 247 views)
File Type: jpg 57 312 PCV.1.jpg (53.0 KB, 277 views)
__________________
Bill.... 36 5 win cpe
blucar is offline   Reply With Quote
Old 08-14-2020, 12:22 PM   #33
Heard
Senior Member
 
Heard's Avatar
 
Join Date: Sep 2013
Location: Florida
Posts: 577
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Bill,
I think you misunderstand how this is plumbed. The air is drawn down through the filler tube vent into the crankcase, then up through the old original fill tube at the front of the block, across the valve chamber area back to the rear of the block, then up through the pcv valve, out through the spacer block and into the manifold.

The line from the fill tube at the front of the engine to the pvc valve is sealed. No way for the pcv to draw air anywhere EXCEPT from the crankcase.

Heard
__________________
Do I look like I have a plan B?
Heard is offline   Reply With Quote
Old 08-14-2020, 03:49 PM   #34
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Heard View Post
Bill,
I think you misunderstand how this is plumbed. The air is drawn down through the filler tube vent into the crankcase, then up through the old original fill tube at the front of the block, across the valve chamber area back to the rear of the block, then up through the pcv valve, out through the spacer block and into the manifold.

The line from the fill tube at the front of the engine to the pvc valve is sealed. No way for the pcv to draw air anywhere EXCEPT from the crankcase.

Heard

Yup, clear as mud! DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-14-2020, 09:03 PM   #35
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Different oil pans. I have one truck and one regular (?) car pan. The reinforcement had me confused. Why was that required?
Attached Images
File Type: jpg 63C921CB-E84F-4E28-9AA0-BE39515D8145.jpg (36.0 KB, 37 views)
File Type: jpg 3A63252C-829A-4F0D-BB11-E02C3657FE41.jpg (43.4 KB, 333 views)
Fortunateson is offline   Reply With Quote
Old 08-15-2020, 12:53 AM   #36
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
Different oil pans. I have one truck and one regular (?) car pan. The reinforcement had me confused. Why was that required?

Is this bracket with the two "U"-shaped slots the "reinforcement" that you're referring to? If so, that bracket is required as a solid and steadying attachment point for the bottom of the starter plate that goes with that pan. Starter plate versions are meant to match their respective oil pan types. DD







………………..
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-15-2020, 11:42 AM   #37
blucar
Senior Member
 
blucar's Avatar
 
Join Date: Jul 2010
Location: Ventura, CA
Posts: 2,464
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Reviewing the original question; Early intake manifold on a 8BA type of engine and the accompanying pix shows the PCV system plumbed into the rear oil fill/breather tube, no front fill/breather tube. If the copper tube running through the valve lifter chamber is the intended source of air flow from the lower crankcase, I doubt if that pipe would have the capacity to ventilate the engine.
Some Early Ford V8 pans have a 'draft' vent located in the front left of the pan. This vent must be closed off if a PCV system is installed on the engine.
Some people maintain that a closed crankcase system, PCV, won't work on a EFV8 engine because the rear main is not sealed, thereby the PCV will draw contaminates through the flywheel/clutch area and into the crankcase/engine.
I am getting ready to take the engine out of my '36, so that I can take it down to H & H to have the engine freshened up. It has not been touched since it's last rebuild in 1960. It is my intention to drill/thread a hole in the front portion of the Offy Super intake for a Ford 292 PCV which will plumbed into the vacuum port to the rear of the second carb.
__________________
Bill.... 36 5 win cpe

Last edited by blucar; 08-15-2020 at 11:51 AM.
blucar is offline   Reply With Quote
Old 08-15-2020, 12:35 PM   #38
JSeery
Member Emeritus
 
JSeery's Avatar
 
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by blucar View Post
Reviewing the original question; Early intake manifold on a 8BA type of engine and the accompanying pix shows the PCV system plumbed into the rear oil fill/breather tube, no front fill/breather tube. If the copper tube running through the valve lifter chamber is the intended source of air flow from the lower crankcase, I doubt if that pipe would have the capacity to ventilate the engine.
Some Early Ford V8 pans have a 'draft' vent located in the front left of the pan. This vent must be closed off if a PCV system is installed on the engine.
Some people maintain that a closed crankcase system, PCV, won't work on a EFV8 engine because the rear main is not sealed, thereby the PCV will draw contaminates through the flywheel/clutch area and into the crankcase/engine.
I am getting ready to take the engine out of my '36, so that I can take it down to H & H to have the engine freshened up. It has not been touched since it's last rebuild in 1960. It is my intention to drill/thread a hole in the front portion of the Offy Super intake for a Ford 292 PCV which will plumbed into the vacuum port to the rear of the second carb.
I'm not following this at all. No PCV system is going to vent more air than the size of the PCV valve and the connected tubing. Want difference would it make if the tubing is routed on top of the manifold or under the manifold?
JSeery is offline   Reply With Quote
Old 08-15-2020, 12:38 PM   #39
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Yep. I have all that I need but still am curious about a PCV valve system for my application.
Attached Images
File Type: jpg 220CD249-61B6-4AA4-8E75-78CB0038DC96.jpg (52.0 KB, 29 views)
File Type: jpg A7412C2E-2D81-4D5B-8395-E326027FC9D3.jpg (54.1 KB, 36 views)
File Type: jpg 286F2302-B815-4525-8DE7-8A3262998BF3.jpg (54.0 KB, 29 views)
Fortunateson is offline   Reply With Quote
Old 08-15-2020, 03:03 PM   #40
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by V8COOPMAN View Post
Hello Fortunate....This might be interesting, at least to YOU and me. Can you give me an exact model number for that Fenton manifold, or maybe a better description? Can we assume that it IS an intake made for the later '49-'54 engine? No mistake there, the rest of you's guys! The "C"8BA is the Canadian version, and Canuck flatheads lasted into 1954 beyond the border. Any other interesting details about your project? DD
Quote:
Originally Posted by Fortunateson View Post
Yep. I have all that I need but still am curious about a PCV valve system for my application.

Fortunate......Ya know, way back there in post #16 of this thread, I asked: "Can you give me an exact model number for that Fenton manifold, or maybe a better description?" You've asked every question under the sun since then (which I've tried my best to answer), but I don't recall you helping me out (YET) with a better ID on that Fenton manifold, or at least a picture or two. I can't reasonably begin to help you with YOUR application if I don't know what we're working with. So, the ball's back in your court....again! DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 08-16-2020, 05:37 AM   #41
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by blucar View Post
Reviewing the original question; Early intake manifold on a 8BA type of engine and the accompanying pix shows the PCV system plumbed into the rear oil fill/breather tube, no front fill/breather tube. If the copper tube running through the valve lifter chamber is the intended source of air flow from the lower crankcase, I doubt if that pipe would have the capacity to ventilate the engine.
Some Early Ford V8 pans have a 'draft' vent located in the front left of the pan. This vent must be closed off if a PCV system is installed on the engine.
Some people maintain that a closed crankcase system, PCV, won't work on a EFV8 engine because the rear main is not sealed, thereby the PCV will draw contaminates through the flywheel/clutch area and into the crankcase/engine.
I am getting ready to take the engine out of my '36, so that I can take it down to H & H to have the engine freshened up. It has not been touched since it's last rebuild in 1960. It is my intention to drill/thread a hole in the front portion of the Offy Super intake for a Ford 292 PCV which will plumbed into the vacuum port to the rear of the second carb.

Bill....I'm not sure that I understand the real point of your post here. Heard explained it rather clearly for you yesterday. And I'm not sure that you fully understand why the original road draft tubes were so large in diameter, vs the relatively small diameter of the tubing that PCV valves are plumbed-into. In fact, I'm beginning to wonder if you fully comprehend why pressure is created in the crankcase in the first place, and WHY there is such a necessity to relieve that pressure. I also have to wonder, since this article is so clearly labled "8BA", why you want to confuse matters referencing 'early' V8 oil pans with a 'draft' vent located at front....RIGHT? Same thing with reference to "not-sealed" rear mains on early V8s. We don't have this situation with an 8BA! And furthermore, you stated: "the accompanying pix shows the PCV system plumbed into the rear oil fill/breather tube". Well, the 'pix' DO NOT show that. The pics DO show the PCV valve & tubing ROUTED through that area, three to four inches below the breather tube itself, with the PCV valve being captured in a rubberized Dorman PCV valve holding fixture, which is part of a fully closed and sealed vacuum circuit (completely isolated from the fresh outside air supply). It's "plumbed" such that it makes way from the intake manifold vacuum source at a common plenum between the two carburetors, then entering the internals of the engine via a bulkhead fitting through the side of the 1" breather tube spacer. From that 90 degree fitting, the sealed circuit continues downward through the PCV valve (it's imperative to mount PCV valves vertically) and on to a compression fitting penetrating the now-capped-off exit tube which exits the oil pan chamber at the front of the valve chamber, and which ORIGINALLY connected to the original road draft tube. Check those pictures again! The pics below suggest ONLY the proximity of the PCV valve to the fresh air breather tube, which is now the avenue for injesting fresh air into the crankcase, and for adding lubricating oil.











First of all, crankcase pressure is created as a result of blow-by, the relatively small volume of combustion gasses that travel past the piston rings and begin to pressurize the lower crankcase, as well as any other areas of the engine which are common/open to the lower pan area. That pressure needs to be relieved because if not relieved, gaskets will begin leaking oil or even be blown outward from their sealing surfaces. In some cases, oil can even be pressurized out of dip stick tubes. Unrelieved crankcase pressure has even been known to deform oil pans. BUT....it usually takes some span of time for pressure to increase to that point if NOT relieved. This pressurization is not huge in volume like combustion exhaust is. In that regard, crankcase pressurization is not an instantaneous process.


Normally, in stock configuration, and in the vintage engines we're discussing here, fresh air is allowed to enter through a usually-capped breather (and many times oil-fill) tube. Fresh air enters only at such times that contaminated crankcase air (let's call it blow-by) leaves the engine via the open, large diameter road draft tube which has been carefully engineered and plumbed down to a point near the road. That draft tube (aptly-named) was designed to be down there for a couple of reasons. First was so that all those pesky fumes and smoke end-up as far away as possible from the sight and smell of us humans riding in the vehicle. But secondly, the end of that large diameter tube was projected into the airstream under the car such that as the vehicle moved down the road, the air rushing past the open end of the tube produces a vacuum via the Bernoulli Principle, effectively sucking the fumes out of the crankcase, at a rate that surpasses the fumes escaping via pressure build-up alone. Relative to the diameter of the draft tube, there is not a huge volume of blow-by being produced in the first place, but the larger diameter of the road draft tube is required to take best advantage of the air passing by the opening at the bottom of the tube to create enough vacuum to be effective. There is not very much purging of the crankcase fumes going-on with the vehicle stopped while idling, as that is one time the PCV valve is least-open.

So Bill, when almost all automobiles began employing PCV systems, that large-diameter road-draft tube disappeared, right? And true, regulated vacuum (via the PCV valve) positively sucked the fumes out of the crankcase as well as relieving blow-by pressure, correct? The entire volume of blow-by passes through that small diameter tubing (usually 3/8" to 1/2" dia.), which also means that ALL of it must pass through the PCV valve. I don't believe I have ever seen an automotive PCV valve with an orifice any larger than about 3/8" diameter. Go out there and just look at that hose nipple on the vacuum fitting at the rear of the valley cover on your Y-block (like the red one below). Not very large, is it?





You must remember that these engines produce a relatively small volume of blow-by (unless worn-out), that is easily evacuated when aided by the engine's manifold vacuum. You should also remember that dependent upon the level of vacuum being produced by the engine, the PCV valve is regulating it's volume of flow. Did you realize that a PCV valve is widest-open when the engine is producing the lowest level of vacuum?
Is there any other part of our dinky little PCV system here that I can attempt to further explain for you? We didn't go to the trouble of researching theory, doing some backyard-engineering, locating, procuring and documenting part numbers and supplies, nor take pictures and invest I don't know how much time laying this out and writing it up to tell everyone how it SHOULD be done. We only thought it might be kind'a cool to SHARE with others in a fairly concise manner, a plausible method which we devised to hide an ugly PCV valve, mounted in a vertical position, yet still affording the ability to service said valve without having to remove the intake for access. I don't believe I have it in me to make any of this any clearer. Promise....there was NO rocket science or gris-gris involved in this project. DD


…………….
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE

Last edited by V8COOPMAN; 08-16-2020 at 06:06 AM.
V8COOPMAN is offline   Reply With Quote
Old 08-22-2020, 12:38 AM   #42
Fortunateson
Senior Member
 
Join Date: Feb 2013
Posts: 511
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by V8COOPMAN View Post
Fortunate......Ya know, way back there in post #16 of this thread, I asked: "Can you give me an exact model number for that Fenton manifold, or maybe a better description?" You've asked every question under the sun since then (which I've tried my best to answer), but I don't recall you helping me out (YET) with a better ID on that Fenton manifold, or at least a picture or two. I can't reasonably begin to help you with YOUR application if I don't know what we're working with. So, the ball's back in your court....again! DD
Well I've tried to send the pics bout three times now. Every time I get an error message! The only identification is Fenton and it is obviously for the 8BA series. I'll try again tomorrow. I guess the "ball" just keeps going out of bonds...
Fortunateson is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-22-2020, 02:57 AM   #43
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Fortunateson View Post
Well I've tried to send the pics bout three times now. Every time I get an error message! The only identification is Fenton and it is obviously for the 8BA series. I'll try again tomorrow. I guess the "ball" just keeps going out of bonds...
Hey Bud.....Just e-mail a picture or two to me and I'll see if I can post 'em here for ya. Then, I'll have an idea of what to MAYBE suggest for your PCV valve. My e-mail below....please put something like "PCV Pictures" in the subject line. DD

[email protected]
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 01-20-2021, 12:46 PM   #44
Kilohertz
Senior Member
 
Kilohertz's Avatar
 
Join Date: Jan 2021
Location: Slightly left of Vernon, BC
Posts: 155
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Well thank you DD and Heard for your excellent work here, super good info.

I have a scenario which I imagine could be quite common. I have found an Offenhauser 1079 4bbl intake which is for the early 32-48 Flatty, mine is a 1951 Flatty. As you see in the picture the 2 ports at the front are not drilled out, but are easily cut out to fit the road draft tube and oil fill/breather tube. My plan is to install the oil fill/breather and then drill/tap the road draft area to fit the PCV valve....and the million dollar question ($600,000 CDN) is...do you know a good PCV valve, similar to what you have chosen, that has a threaded base on it rather than utilizing a rubber grommet?

Appreciate any guidance you may offer.

Cheers
Attached Images
File Type: jpg Offy 1079.jpg (16.8 KB, 45 views)
__________________
1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot.
Kilohertz is offline   Reply With Quote
Old 01-20-2021, 01:08 PM   #45
1948F-1Pickup
Senior Member
 
1948F-1Pickup's Avatar
 
Join Date: Oct 2015
Location: Socal
Posts: 794
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

There are a few OE apps that had threads, but then you're stuck with whatever vacuum specifications those had.
M/E Wagner has an adjustable PCV valve.....

http://mewagner.com/

And an adapter you might be able to thread....
http://mewagner.com/?p=540
1948F-1Pickup is offline   Reply With Quote
Old 01-20-2021, 01:11 PM   #46
Kilohertz
Senior Member
 
Kilohertz's Avatar
 
Join Date: Jan 2021
Location: Slightly left of Vernon, BC
Posts: 155
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Sponsored Links (Register now to hide all advertisements)
Thanks! I found those adjustable units, very cool, but landed in Canada would be about $300


I'll keep looking for a threaded unit.

Cheers
__________________
1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot.
Kilohertz is offline   Reply With Quote
Old 01-20-2021, 04:12 PM   #47
1948F-1Pickup
Senior Member
 
1948F-1Pickup's Avatar
 
Join Date: Oct 2015
Location: Socal
Posts: 794
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Make sure you have the correct air flow direction. In other words, as an example, GM made at least two different threaded PCV valves and having threads is no indication of air flow direction. You need to determine which way you need the flow and which way the valve flows)

Non-exhaustive list....
2002 Mitsubishi Lancer

2002 Lexus

Hyundai, 1/8 pipe thread. P/N 26740-32804. (Fram P/N FV 266,
Universal with many apps including Chrysler, Kia, Mazda, Mitsubishi)

Datsun/Nissan (L/A/VG/U/R/CA/Z/E/J/GA) various 4 cylinder engines, British Standard Pipe threads

1965-69 Chevys (Camaro, Chevelle, Corvette)

Early 60's Ford truck 292’s are supposedly 3/8” threaded

1963 Ford Galaxie 352
1948F-1Pickup is offline   Reply With Quote
Old 01-20-2021, 04:39 PM   #48
Kilohertz
Senior Member
 
Kilohertz's Avatar
 
Join Date: Jan 2021
Location: Slightly left of Vernon, BC
Posts: 155
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Thank you '48 F1, appreciate the info.

I just finished doing all my research as well and came up with similar results. I found Hyundai Sonata and Mits various engines and a number of other makes with engines from 2.5L up to 4L that use this one. Fram FV311 crosses to Beck Arnley 045-0270, threaded 1/8-28 BSPT, 1/8" pipe thread. And yes, will suck/blow on it to confirm if it threads into the manifold vacuum area, or the road tube section. I read someone's post where he put it in backwards and the vacuum sucked out the little brass insert and wiped out his $3200 350. Yikes!

Cheers
__________________
1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot.
Kilohertz is offline   Reply With Quote
Old 01-20-2021, 04:57 PM   #49
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 5,374
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

All good info. I am sure glad I don't have to be concerned about it though.
Pete is offline   Reply With Quote
Old 01-20-2021, 06:12 PM   #50
1948F-1Pickup
Senior Member
 
1948F-1Pickup's Avatar
 
Join Date: Oct 2015
Location: Socal
Posts: 794
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Kilohertz View Post
Thank you '48 F1, appreciate the info.

I just finished doing all my research as well and came up with similar results. I found Hyundai Sonata and Mits various engines and a number of other makes with engines from 2.5L up to 4L that use this one. Fram FV311 crosses to Beck Arnley 045-0270, threaded 1/8-28 BSPT, 1/8" pipe thread. And yes, will suck/blow on it to confirm if it threads into the manifold vacuum area, or the road tube section. I read someone's post where he put it in backwards and the vacuum sucked out the little brass insert and wiped out his $3200 350. Yikes!

Cheers
I think that Fram one you listed is the likely candidate.....

Last edited by 1948F-1Pickup; 01-20-2021 at 06:17 PM.
1948F-1Pickup is offline   Reply With Quote
Old 01-20-2021, 07:03 PM   #51
Kilohertz
Senior Member
 
Kilohertz's Avatar
 
Join Date: Jan 2021
Location: Slightly left of Vernon, BC
Posts: 155
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by 1948F-1Pickup View Post
I think that Fram one you listed is the likely candidate.....

And that's the one I ordered...be here tomorrow and I'll let you know.


Thanks!
__________________
1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot.
Kilohertz is offline   Reply With Quote
Old 01-20-2021, 07:04 PM   #52
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by Kilohertz View Post
Well thank you DD and Heard for your excellent work here, super good info.

I have a scenario which I imagine could be quite common. I have found an Offenhauser 1079 4bbl intake which is for the early 32-48 Flatty, mine is a 1951 Flatty. As you see in the picture the 2 ports at the front are not drilled out, but are easily cut out to fit the road draft tube and oil fill/breather tube. My plan is to install the oil fill/breather and then drill/tap the road draft area to fit the PCV valve....and the million dollar question ($600,000 CDN) is...do you know a good PCV valve, similar to what you have chosen, that has a threaded base on it rather than utilizing a rubber grommet?

Appreciate any guidance you may offer.

Cheers
Kilohertz .....Your positive critique is MUCHO appreciated. One thing to remember about PCV valves is that they are affected by engine displacement, and by expected vacuum levels. IF the camshaft you are planning on running is of any performance types, your vacuum levels will likely be diminished from a stock cam's vacuum levels. This is one reason to TRY to find a valve somewhat CLOSE to a match for your particular engine's characteristics. In our case, I believe Heard's engine is at 284 cu. in. displacement. I like the GM PCV valves because of the all metal, well-proven design. In our case, the only GM engines that I could think of even close in displacement, and with a performance cam was the '67-'69 Z-28s at 302 cu. in., and yup....they did have a rumpety-rump cam, for sure! That particular PCV valve is a Delco 19303069. IF running a stock cam, I'd source a PCV valve for a 283 Chevy engine, say 1965-ish.

Just about all of the PCV valves I've looked at which have a male threaded end are built such that the direction of flow through the valve is opposite of what you are trying to do, assuming that you want to drill and thread that blanked-off draft tube location. Those threaded ends usually thread into a vacuum port on a carburetor.

I might suggest carefully drilling a hole in that boss sized precisely for a rubber insert/grommet designed to receive a specific PCV valve. You'll want one similar to the one (in configuration) that we used in our project. The LARGE diameter end would fit down into the manifold, with the other end plumbed to a "MANIFOLD" vacuum source. REMEMBER...To run a set-up like this, the vertical tube must be in place at the front end of the valve chamber, underneath the manifold.
The Dorman web site shows a VERY extensive line of different PCV rubber grommets which your local parts store can order, if not in stock. These examples below can be seen at many sources on line. I know it's not what you wanted to hear, but you can still make the installation look tidy with just a little thought and planning. Hope this helps! DD





........
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 01-20-2021, 07:30 PM   #53
Kilohertz
Senior Member
 
Kilohertz's Avatar
 
Join Date: Jan 2021
Location: Slightly left of Vernon, BC
Posts: 155
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Thanks DD, great info, again.

I actually spent half the day doing research and looking and came up one which I have ordered and will be here tomorrow. It's threaded with a nice 1/8" NPT end which will thread right into the Offy manifold right under the carb, and 3/8" hose barb. There are 2 factory ports there, the other I will use for the manifold vacuum canister.

I found the one you mentioned for the chevy 283/327 but decided I wanted something for a smaller engine, mine is stock 239 (so far) and has about 17"Hg at idle. I'm hoping that will come up as the engine continues to run, and once I get to drive it a bit. The compression is quite low also at only 56-60 psi, again hoping driving it this summer will bring that back, if not, bore, Merc crank, shaved heads and start all over. For now I thought I would experiment with the PCV, I cal always change it if it doesn't work correctly.

The one I chose is a Fram FV311, looks like this. It's used for a variety of engines from 3.0 - 4.0 L, I thought it would be close.







I will drill/tap a hole in the road draft tube location for a corresponding right angle brass barb fitting like this.




This should make for a neat looking PCV setup.


Thanks again for the help.


Cheers
__________________
1949 Ford F-47 with a '51 8BA Flatty, GM TBI fuel injection system, and a grey shop cat, Spot.

Last edited by Kilohertz; 01-20-2021 at 07:37 PM.
Kilohertz is offline   Reply With Quote
Old 03-07-2021, 09:31 AM   #54
BillCook
Junior Member
 
Join Date: Feb 2021
Location: Lake Grove NY
Posts: 28
Send a message via Yahoo to BillCook
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by cadillac512 View Post
Well done, Coop and Heard! That's nice work,and good thinking. Should function perfectly.



Terry
That’s a great system !
BillCook is offline   Reply With Quote
Old 03-07-2021, 01:26 PM   #55
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by BillCook View Post
That’s a great system !

Thank you, and PLUS....it ain't ugly! DD
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 03-09-2021, 12:23 PM   #56
Ardun
Senior Member
 
Ardun's Avatar
 
Join Date: Jun 2013
Location: Reno
Posts: 171
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Anyone have a solution for an Ardun?
Ardun is offline   Reply With Quote
Old 03-11-2021, 08:48 PM   #57
48fordnut
Senior Member
 
48fordnut's Avatar
 
Join Date: Sep 2010
Location: warner robins ga 31088
Posts: 494
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Coop/Heard, finished reading all of the post.
Thank you for a well defined way to use your system.
Thank you for sharing.
jim
48fordnut is offline   Reply With Quote
Old 09-16-2022, 02:39 PM   #58
decling
Senior Member
 
Join Date: Oct 2020
Location: Arizona
Posts: 103
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

I know this is a older post but I really like this system and am in the process of doing it to my 8BA with an Edelbrock Slingshot intake. I am changing it just a bit so I don't have to remove the custom oil fill tube and breather cap to check or replace the PVC valve. I made a piece to go into the spacer that holds the PVC valve. It may not be a clean as the other but works for me.
Attached Images
File Type: jpg PXL_20220830_053410829.jpg (56.5 KB, 42 views)
File Type: jpg PXL_20220830_053458290.jpg (63.0 KB, 44 views)
decling is offline   Reply With Quote
Old 09-16-2022, 03:09 PM   #59
Bored&Stroked
Senior Member
 
Bored&Stroked's Avatar
 
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,013
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by decling View Post
I know this is a older post but I really like this system and am in the process of doing it to my 8BA with an Edelbrock Slingshot intake. I am changing it just a bit so I don't have to remove the custom oil fill tube and breather cap to check or replace the PVC valve. I made a piece to go into the spacer that holds the PVC valve. It may not be a clean as the other but works for me.
Nice clean setup!
Bored&Stroked is offline   Reply With Quote
Old 09-16-2022, 03:41 PM   #60
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by decling View Post
I know this is a older post but I really like this system and am in the process of doing it to my 8BA with an Edelbrock Slingshot intake. I am changing it just a bit so I don't have to remove the custom oil fill tube and breather cap to check or replace the PVC valve. I made a piece to go into the spacer that holds the PVC valve. It may not be a clean as the other but works for me.

Man, I love watching a guy think really hard about how to approach a problem, and once he's figured a direction to go, just making parts work from scratch.....nice and neat, well-thought-out, and with slick workmanship. I LIKE what you've done there! And we really appreciate the feedback, too.

Coop

.
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 09-16-2022, 04:07 PM   #61
decling
Senior Member
 
Join Date: Oct 2020
Location: Arizona
Posts: 103
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Thanks Coop.
I will attach the drawing for the part if anyone is interested. I used a Dorman dip stick grommet 65113 and a Fram FV181 PVC valve from a 75 Ford Mustang II 302 since my 8ba is a 276cc now. I just drilled and tapped the 1" spacer 3/4-16.
Attached Images
File Type: jpg PVC Adapter.jpg (27.0 KB, 64 views)
decling is offline   Reply With Quote
Old 10-01-2022, 03:50 PM   #62
eicke
Member
 
Join Date: Jan 2013
Posts: 47
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by decling View Post
Thanks Coop.
I will attach the drawing for the part if anyone is interested. I used a Dorman dip stick grommet 65113 and a Fram FV181 PVC valve from a 75 Ford Mustang II 302 since my 8ba is a 276cc now. I just drilled and tapped the 1" spacer 3/4-16.
Decling helped me out on this modification. Thought I'd add a twist as I appreciated his knowledge and Coop's.

Running an electric fuel pump on my Flathead Model A.

I'm a cheap SOB and couldn't see spending $150 on a shorty Speedway pump stand.

The diameter of the Henry stand at the X (first pic) is close (within a thou or two) to the bore of the 1" thick carb plate. The casting in this area is off a couple thou. Second pic is where I hacked off the Henry stand. Chucked it up in the South Bend to clean the cut up. Third pic is the new shorty stand pressed into the plate. Added a little anerobic sealant for good measure.

Now to add the PCV adapter.

-Ron


309970559_3307109212868759_2311086512866686262_n.jpg

309991445_3307110209535326_5009972368238460142_n.jpg

310223067_3307110666201947_6913522936601481946_n.jpg
eicke is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 10-01-2022, 09:29 PM   #63
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by eicke View Post
Decling helped me out on this modification. Thought I'd add a twist as I appreciated his knowledge and Coop's.

Running an electric fuel pump on my Flathead Model A.

I'm a cheap SOB and couldn't see spending $150 on a shorty Speedway pump stand.

The diameter of the Henry stand at the X (first pic) is close (within a thou or two) to the bore of the 1" thick carb plate. The casting in this area is off a couple thou. Second pic is where I hacked off the Henry stand. Chucked it up in the South Bend to clean the cut up. Third pic is the new shorty stand pressed into the plate. Added a little anerobic sealant for good measure.

Now to add the PCV adapter.

-Ron
Man, I love 'thinking out of the box', especially when the workmanship is at least as good as the thinking. That's SLICK! And thank you for the kudos!!

Coop

__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 10-01-2022, 10:58 PM   #64
outlaw
Senior Member
 
Join Date: May 2010
Location: Eagle River,Alaska
Posts: 352
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

I would love to see pics of installing the PCV adapter.

Last edited by outlaw; 10-03-2022 at 12:12 AM.
outlaw is offline   Reply With Quote
Old 10-02-2022, 12:38 AM   #65
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by outlaw View Post
I would love to see pics of installing the PVC adapter.

Now that you mention it, ME too!

Coop

.
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Old 01-03-2024, 02:47 PM   #66
Ol' Ron
Senior Member
 
Ol' Ron's Avatar
 
Join Date: May 2010
Location: Chester Vt
Posts: 8,842
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Sponsored Links (Register now to hide all advertisements)
Be nice if you could buy akit with all the "stuff" you need to make this PVC system we people that live in foreign countries Like Vermont, can;t find most of it.
Gramps

I don'r uz the fuel pump (in tanl electric_ so I could use an earky fil pump unit and make the riser. But!!?????

Last edited by Ol' Ron; 01-03-2024 at 03:00 PM.
Ol' Ron is offline   Reply With Quote
Old 01-03-2024, 11:01 PM   #67
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 5,374
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

...
Pete is offline   Reply With Quote
Old 01-03-2024, 11:13 PM   #68
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 5,374
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

A neat but complicated engineering project.
On a wet sump engine, I have done the crankcase breathing much simpler with all stock parts since the mid 50's.
On an 8ba block I use an early (pre 49) manifold and just cut 1/2 inch off the top of the fill tube. I leave a 1/4 inch wide tab the height of the manifold deck to keep the tube from coming out. I use an original early oil fill/breather stand with mesh filled cap.
Just like factory. No smoke or oil puking up to 7K rpm.
Pete is offline   Reply With Quote
Old 01-04-2024, 03:38 PM   #69
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 5,374
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

...
Pete is offline   Reply With Quote
Old 01-24-2024, 12:27 PM   #70
52Allard
Member
 
Join Date: Apr 2020
Location: Minneapolis
Posts: 49
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Why didn't you run the PCV into the bottom of the intake manifold instead of routing a tube outside through the breather and then back into the manifold?
I'm not trying to be a pest but thinking about tapping directly to the bottom of the intake manifold so want to make sure there isn't something I'm missing.
52Allard is offline   Reply With Quote
Old 01-24-2024, 03:15 PM   #71
V8COOPMAN
Senior Member
 
V8COOPMAN's Avatar
 
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
Default Re: PCV VALVE SYSTEM for 8BA with Early Intake Manifold

Quote:
Originally Posted by 52Allard View Post
Why didn't you run the PCV into the bottom of the intake manifold instead of routing a tube outside through the breather and then back into the manifold?
I'm not trying to be a pest but thinking about tapping directly to the bottom of the intake manifold so want to make sure there isn't something I'm missing.
'Cuz one of the big ideas here was to be able to change or service the PCV Valve WITHOUT REMOVING the intake manifold. If I'm understanding what you describe, it looks like the only way to service the PCV Valve would be to remove the whole intake manifold. The little bit of tubing that is exposed in our iteration is minimal & rather pleasant to look at, eh?

Coop


.
__________________
Click Links Below __


'35-'36 W/8BA & MECHANICAL FAN


T5 W/TORQUE TUBE
V8COOPMAN is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 01:26 AM.