|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
05-07-2011, 09:20 PM | #1 |
Senior Member
Join Date: May 2010
Location: Central Coast, Calif.
Posts: 839
|
Model A Engine w/ 5 bearing cam?
I'm an Early Ford V-8 guy...but I need some Model A help. What can you tell me about an early '28 block with a 5 bearing cam? Are they desirable? We just got one with some early V-8 parts...
The block looks good. No visible cracks or repairs in the block and it's only bored .015 over. Let me know what you think. Thanks, Neal |
05-07-2011, 09:53 PM | #2 |
Senior Member
Join Date: May 2010
Location: santa cruz, calif
Posts: 2,011
|
Re: Model A Engine w/ 5 bearing cam?
sounds like a good block to build a stock engine with. Some guys like the 5 main cam because they can use stiffer valve springs and have no cam flex. But, OTOH, the early blocks have weaker rear main bosses than the later blocks.
|
Sponsored Links (Register now to hide all advertisements) |
|
05-07-2011, 10:00 PM | #3 |
Senior Member
Join Date: May 2010
Location: Portland, Oregon
Posts: 5,902
|
Re: Model A Engine w/ 5 bearing cam?
You don't want one of those old 5-bearing Muddle A blocks. I'll give you $35 for it, including shipping to Portland, just to help you get it out of your way.
|
05-07-2011, 10:06 PM | #4 |
Senior Member
Join Date: May 2010
Location: Central Coast, Calif.
Posts: 839
|
Re: Model A Engine w/ 5 bearing cam?
|
05-07-2011, 10:31 PM | #5 |
Senior Member
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,636
|
Re: Model A Engine w/ 5 bearing cam?
....with the block number, to the right guy, who knows.
|
05-07-2011, 11:02 PM | #6 |
Senior Member
Join Date: May 2010
Posts: 3,099
|
Re: Model A Engine w/ 5 bearing cam?
Sponsored Links (Register now to hide all advertisements)
__________________
http://www.abarnyard.com/ |
05-09-2011, 10:38 AM | #7 |
Senior Member
Join Date: Jun 2010
Location: Temecula, CA
Posts: 4,085
|
Re: Model A Engine w/ 5 bearing cam?
The above answers are all good. As a side note the cam could be worth something as the Donovan engine uses that cam. Ford made 3 versions of the 5 bearing cam, the first had all 5 bearings ground to the same size, this is the one Donovan uses. As the 5 bearing blocks were used up, the next version had all 5 ground, but the 2 intermediate ones were smaller, in the 3rd version those bearings were just rough-turned on a lathe. The smaller bearings allowed quicker installation into the block.
|
05-09-2011, 11:32 AM | #8 |
Senior Member
Join Date: May 2010
Location: Central Coast, Calif.
Posts: 839
|
Re: Model A Engine w/ 5 bearing cam?
Thanks for the info. I'll take a look at the cam and see what condition it is in.
Thanks again, Neal |
05-09-2011, 11:34 AM | #9 |
Senior Member
Join Date: May 2010
Location: "Live Free or Die!"
Posts: 510
|
Re: Model A Engine w/ 5 bearing cam?
Does the block have a number? If not, where is the number pad and what size is it? If it is/was a three or four digit # it is worth more than $35. I have three 3 digit cars and two 4 digit cars. I'm one of those guys Marco was referring to.
__________________
"A wet bird doesn't fly at night." |
05-09-2011, 12:26 PM | #10 |
Senior Member
Join Date: May 2010
Location: Central Coast, Calif.
Posts: 839
|
Re: Model A Engine w/ 5 bearing cam?
It's a 170,000 number...which is June of '28 I think.
|
05-09-2011, 12:45 PM | #11 |
Senior Member
Join Date: May 2010
Location: Fairfax, VA
Posts: 3,393
|
Re: Model A Engine w/ 5 bearing cam?
Interesting. I have one where the oil line is drilled from the timing gear chamber, not a tube that was added later. The hole at the timing gear end is closed with a flat head screw.
clem |
05-09-2011, 09:42 PM | #12 |
Senior Member
Join Date: May 2010
Location: "Live Free or Die!"
Posts: 510
|
Re: Model A Engine w/ 5 bearing cam?
Interesting that an engine that late is 5 main. Will have to look at some of my later blocks. Thank you for responding.
__________________
"A wet bird doesn't fly at night." |
05-09-2011, 10:36 PM | #13 | |
BANNED
Join Date: May 2010
Location: Walla Walla, Washington USA
Posts: 6,066
|
Re: Model A Engine w/ 5 bearing cam?
Quote:
This is from my engine block data... 5 OR 3 CAMSHAFT BEARINGS 5 # 481,204 OCTOBER 03, 1928 3 # 492,408 OCTOBER 06, 1928 (11,204) (SEE FORD SERVICE BULLETIN: JANUARY, 1929) (CONTINUED THROUGH END OF PRODUCTION) THE “RELEASE” INFORMATION OF SEPTEMBER 28, 1928, INDICATED: · “REMOVED SECOND AND FOURTH CAMSHAFT BEARINGS”. Pluck |
|
05-10-2011, 07:12 AM | #14 |
Member
Join Date: Jan 2011
Location: Richmond Michigan
Posts: 32
|
Re: Model A Engine w/ 5 bearing cam?
Hi Neil, I believe we have the same engine. I just posted yesterday Barn Find. Take a look, http://www.fordbarn.com/forum/showthread.php?t=36596
|
05-10-2011, 09:51 AM | #15 |
Senior Member
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,636
|
Re: Model A Engine w/ 5 bearing cam?
I think posting the block number, or partial number, of any block for sale or inquiry
is a good deal. It helps the people trying to ID the block and/or the anal group, that would be me, looking for the block from their chassis. Yes, it is a needle in a hay stack, but I care. Thanks again Neal. Looking for block#...A 352,XXX... |
01-10-2017, 07:19 PM | #16 | |
Senior Member
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,636
|
Re: Model A Engine w/ 5 bearing cam?
Quote:
3 cam bearings.. |
|
01-10-2017, 08:36 PM | #17 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Model A Engine w/ 5 bearing cam?
If the block is original and numbers matching, it must be during the mix and match transition period. My numbers matching engine from my 9-27-28 Phaeton has the 5 bearing block and 5 bearing cam, but the 2nd and 4th bearings are rough undercut and not used. My engine number is 404378.
|
01-12-2017, 10:12 AM | #18 |
Senior Member
Join Date: May 2010
Location: Long Island, NY
Posts: 3,463
|
Re: Model A Engine w/ 5 bearing cam?
Later blocks made in 1931 have stiffeners added to the rear transverse web making them stronger. Also, later blocks have better coolant flow.
Although the 5-bearing cam has a better load distribution than the later 3-bearing cams, the 5-bearing supports were not necessary. The maximum cam bending moment is reacted by the center support where the oil pump & distributor drive gear is situated. By the way, camshaft thrust loads are reacted by a spring loaded plunger in the front timing gear cover of the engine. The thrust loads come primarily from the torque of the oil pump & distributor drive mechanism.
__________________
Bob Bidonde |
01-12-2017, 12:58 PM | #19 |
Senior Member
Join Date: May 2010
Location: NC
Posts: 2,975
|
Re: Model A Engine w/ 5 bearing cam?
My 1928 Sport Coupe 10-8-28 has the 5 main cam and block. All 5 bearings are to size on the cam and in the block. This is the original engine it has the solid front engine mount, and equalizing brakes. I have the title from 1938. all numbers match.
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|