The Ford Barn

Shoebox · 06-21-2022, 09:00 PM

I need to decide on what method of crankcase ventilation I want to use on the 276 cube 8ba I have coming together. On my previous engine build I used the original oil filler tube with the cap with the large air baffle, and the original road draft tube. The crankcase ventilated fine, and I never smelled any crankcase fumes, course it was a tight new engine.
Now, I have a nifty pcv setup that would press into the road draft hole in the 2x2 Offy manifold I have, that would tap into the one manifold vacuum port. This leads to the discussion about the fact I am using a GM dist. that also needs manifold vacuum,.... which has been previously discussed here.

I am interested in what some of you guys with non- stock 8ba engines have chosen to do. Thanks all!

petehoovie · 06-21-2022, 10:12 PM

See these threads > https://www.fordbarn.com/forum/showt...ight=Jamco+PVC

and > https://www.fordbarn.com/forum/showt...ight=Jamco+PVC

Shoebox · 06-22-2022, 08:34 AM

Thanks for the links Pete, I did read through both and gained some insight. I would STILL like to hear what various folks have chosen to do on this, and how they feel it worked. Thanks

oldbugger · 06-22-2022, 08:57 AM

what you describe with your pcv setup is just what i did. works great, no issues with gm dist. i would say go for it. Paul

Ken Henry · 06-22-2022, 10:41 AM

Here's my setup for what it's worth. I was concerned (maybe needlessly??) about only drawing crankcase gases into one plane of the manifold or just the front or rear carb, so I used these modified spacers. If you look closely at the second photo you can see a hose going from the oil fill tube to where the air cleaner would be. This goes to a port on the "clean" side of the air filter element. Air comes in through this hose when the PCV valve is drawing vacuum and crankcase fumes spill out and into the air cleaner under heavy loads. I don't seem to have a good photo of the PCV valve but it is sealed into the old opening for the road draft tube like the common kits and sized for a 3L V6 engine (Lexus??). Ken

3AA27331-F5FE-4A01-A493-8E1779A4CE0E by kenhenry_06268, on Flickr

D5A33FA7-E7D7-40FA-8782-8B2E5AAB8B7F by kenhenry_06268, on Flickr

Ken Henry · 06-22-2022, 10:47 AM

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Regarding where to pull your distributor vacuum signal from, I would not tee into the PCV lines for this. This is based on my old vacuum wiper system going from almost useless to totally useless when teeing the PCV system into the line for the wipers previously. Maybe there is a port behind the rear carb you can use...

06-21-2022, 09:00 PM	#1
Shoebox Senior Member Join Date: Jan 2014 Location: Holmen,Wisconsin Posts: 787	Thoughts on 8ba Crankcase Ventilation I need to decide on what method of crankcase ventilation I want to use on the 276 cube 8ba I have coming together. On my previous engine build I used the original oil filler tube with the cap with the large air baffle, and the original road draft tube. The crankcase ventilated fine, and I never smelled any crankcase fumes, course it was a tight new engine. Now, I have a nifty pcv setup that would press into the road draft hole in the 2x2 Offy manifold I have, that would tap into the one manifold vacuum port. This leads to the discussion about the fact I am using a GM dist. that also needs manifold vacuum,.... which has been previously discussed here. I am interested in what some of you guys with non- stock 8ba engines have chosen to do. Thanks all! __________________ I went, I saw, I bought the T shirt 51 Ford Deluxe Tudor 32 Ford roadster 39 Mercury Towncar

06-21-2022, 10:12 PM	#2
petehoovie Senior Member Join Date: May 2015 Posts: 8,142	Re: Thoughts on 8ba Crankcase Ventilation See these threads > https://www.fordbarn.com/forum/showt...ight=Jamco+PVC and > https://www.fordbarn.com/forum/showt...ight=Jamco+PVC __________________ The only thing nice about being imperfect is the joy it brings to others.... *"Silver rings, your butt! Them's washers!"* "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0

06-22-2022, 08:34 AM	#3
Shoebox Senior Member Join Date: Jan 2014 Location: Holmen,Wisconsin Posts: 787	Re: Thoughts on 8ba Crankcase Ventilation Thanks for the links Pete, I did read through both and gained some insight. I would STILL like to hear what various folks have chosen to do on this, and how they feel it worked. Thanks __________________ I went, I saw, I bought the T shirt 51 Ford Deluxe Tudor 32 Ford roadster 39 Mercury Towncar

06-22-2022, 08:57 AM	#4
oldbugger Senior Member Join Date: May 2010 Location: Holland Mi Posts: 641	Re: Thoughts on 8ba Crankcase Ventilation what you describe with your pcv setup is just what i did. works great, no issues with gm dist. i would say go for it. Paul

06-22-2022, 10:41 AM	#5
Ken Henry Senior Member Join Date: Jul 2010 Location: Rochester, NY Posts: 266	Re: Thoughts on 8ba Crankcase Ventilation Here's my setup for what it's worth. I was concerned (maybe needlessly??) about only drawing crankcase gases into one plane of the manifold or just the front or rear carb, so I used these modified spacers. If you look closely at the second photo you can see a hose going from the oil fill tube to where the air cleaner would be. This goes to a port on the "clean" side of the air filter element. Air comes in through this hose when the PCV valve is drawing vacuum and crankcase fumes spill out and into the air cleaner under heavy loads. I don't seem to have a good photo of the PCV valve but it is sealed into the old opening for the road draft tube like the common kits and sized for a 3L V6 engine (Lexus??). Ken 3AA27331-F5FE-4A01-A493-8E1779A4CE0E by kenhenry_06268, on Flickr D5A33FA7-E7D7-40FA-8782-8B2E5AAB8B7F by kenhenry_06268, on Flickr

06-22-2022, 10:47 AM	#6
Ken Henry Senior Member Join Date: Jul 2010 Location: Rochester, NY Posts: 266	Re: Thoughts on 8ba Crankcase Ventilation Sponsored Links (Register now to hide all advertisements) Regarding where to pull your distributor vacuum signal from, I would not tee into the PCV lines for this. This is based on my old vacuum wiper system going from almost useless to totally useless when teeing the PCV system into the line for the wipers previously. Maybe there is a port behind the rear carb you can use...