Oil Blowby
 

I am getting some oil blowby from my oil filler tube. Not real bad, but it makes the engine compartment messy. I assume I have the old type filler tube baffles in the tube because I have an early AR engine. Would the improved filler tube with steeper baffles work out better? I have also seen a cap that has a tube attached to vent the smoke / blowing oil under the car. Is this a good remedy? I am not concerned about excessive engine wear as a cause of the problem. Compression is 55 lbs or a little better on each cylinder. Spark plugs are not sooty / oily. My A has plenty of pep and I can climb a rather steep, curvy hill near my house in high gear. My neighbor has an old Chevy truck (6) that won't make the hill in 3rd gear. The cap with the vent tube might work. I just don't like gimmicks. What remedy did the old timer use? Thanks, BW

Re: Oil Blowby
 

the blow by tube was made for years to help that problem . also was told to use a 'pcv' valve to help , even on the open system ............... steve

Re: Oil Blowby
 

I have the flexable vent pipe and cap on mine. It works well. In my case it was raw oil droplets that came out of the filler tube and not smoke that messed up the engine compartment. The filler tubes were redesigined and enlarged in 1932 to eleviate the problem.

Re: Oil Blowby
 

I find that an old sock over the breather tube will keep all the oil confined and the engine compartment clean. And will not cause oil pressure to build up and leak out the rear main seal. I tried the breather tube once and that caused the oil pressure to build up. It should hold you over until you decide to do something with the engine.

Re: Oil Blowby
 

mine was doing the same thing, oil on the fire wall and starter, and like your's it ran well,
i put a breather tube on it about 6 mo's ago, no more oil in the eng. comp.
the tube work's great for me, and easy to install.

Re: Oil Blowby
 

take the cap off and put a piece of a steel wool that use to clean dishes up underneath the tabs and from the inside of the cap in the center pull it down a bit. My engine use to flicker oil droplets out of this pipe and make a mess. Since I did this I have not had 1 drop of oil.

If you need a pic on how its done let me know

Re: Oil Blowby
 

bogdonj - I would like to see a picture. If you wish, post it here; or send it to [email protected]

Thanks,

Re: Oil Blowby
 

i use a K&N filter on my filler . breathes well & helps control oil . i only have a small problem when going 55-60 mph for a long trip ............ steve

Re: Oil Blowby
 

I will take a picture tonight and post it for you

Re: Oil Blowby
 

Do you have a pic to share?

Re: Oil Blowby
 

very easy fix!

Re: Oil Blowby
 

My relatively fresh engine also will spit a little bit of oil on a long hard run. Even though the quantity is small, it still makes a mess.

bogdonj, thanks for the pictures.

Is this an old SOS pad that you used to stick up in the oil filler cap?

Also, I have another question for those who proposed the flexible vent pipe and cap. Do any of you use this with engine pans? How do you route the flexible pipe? Any rattles?

I visit this forum every day and it never ceases to amaze me how much I learn about the "A". Thanks to everyone for their contiued input and knowledge.

Dick

Re: Oil Blowby
 

bogdonj - Thanks for the pictures. I do appreciate it. I have oil blowby on my engine, but that is due to it being old and somewhat tired.

Again thanks,

Re: Oil Blowby
 

your welcome, Its not a SOS pad they are more steel wool but its a normal scrubbing pad. You can get them at any grocery store. Don't use any type of spounge or fabric that can rip apart. It's important to pull the pad down in the middle just to make 100% sure no oil happenes to slip by. Very cheap fix to fix a messy problem

Re: Oil Blowby
 

I ran mine down that square hole in the stock engine mount and clamped with supplied clamp to the steering column. But car never had any engine pans and it is a driver so I never noticed any extra rattles!:cool:

Re: Oil Blowby
 

the way i did mine.

Re: Oil Blowby
 

I use an accessory piece called a Fumaze. It's a very nicely made breather that routs oil and fumes under the car. Most supplyers have them.

Re: Oil Blowby
 

No search on the internet shows a fumaze breather.

Re: Oil Blowby
 

I too use the stainless steel scrubber pad in the cap with absolutely no blow-by.

If you want to keep the original appearance, you might want to read Brent's posts regarding the filler baffles in previous thread:

http://www.fordbarn.com/forum/showth...+filler+baffle

Re: Oil Blowby
 

Louis;

Thanks for the pictures. You annswered my question.

Dick

Re: Oil Blowby
 

Hi guy's


The A engine came out before the "Road draft tube" was standard on latter motor's. The filler pipe is the only way in or out on the A engine (blow-by)


The fumemaze "pipe" is a halfway cure..but it will keep the mess off the firewall..To make it work you'ed have to make some kind of "Vent" over on the valve cover side..



As you go down the road the vacuum on the end of the pipe from the air passing by it will suck the blow-by out of the engine.



Fresh air will enter at the Valve cover. Now you can see how the road draft tube work's.. It was used for year's. "But" with million's of car's using this system there were fume's going out into the air....



This why the PCV "System" came into effect.. It sucked the fumes out of the engine and "Metered" them back to the intake to be burned.. This is what I have on my engine & it work's well...It suck's fresh air in the filler pipe....It's what's called a "open" system..Modern car use a "closed" deal



In the "How to restore your Model A " volume "4" there are two tip's shown..First one is how to install a PCV valve on page 31. Second one is showing a vent on page 92.


The way the guy did the vent could cause a problem if there were a backfire..could blow the pan off !!! This will not happen with a PCV valve installed as it will close in case of a back fire.



Good luck with whatever "system" you choose ....



Greg out west

Re: Oil Blowby
 

Does anyone have these instructions on installing a pcv valve?

Re: Oil Blowby
 

I took Hoarsewhisperer's advice and referred to the previous thread on this subject. I did not know that the oil filler tube had to be oriented in a particular way with the bottom baffle facing downward. I checked mine and, sure enough, it was pointing almost up. Fixed that in a hurry.

HoarseWhisperer (you should change your handle - it's too difficult to type - my fingers are sore) and bogdonj - do you have any concerns about small pieces of stainless steel from the pot scrubber in the cap getting into the oil in the pan?

Dick

Re: Oil Blowby
 

Dick, does this mean I can follow you on tours now, without using my windshield wiper? :D

Here's a photo of the "stuff" inside my oil filler cap that's been there since I purchased the Roadster, four years ago.

It appears rather coarse; like a mini-slinky. Never saw any of it in the pan. The oil filler baffles are positioned correctly and my engine compartment stays clean.

Re: Oil Blowby
 

Yes, but your car will rust out earlier without that oil mist on it coming from mine!!

Re: Oil Blowby
 

BTW, thanks for the picture.

Dick

Re: Oil Blowby
 

I have no worries about the pad breaking apart and getting into my engine. It's securley put in place and if it did happened to come loose for no reason it would be extremely hard for it to get past the baffles in the pipe.