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Old 09-08-2019, 03:46 PM   #7
glennpm
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Join Date: Sep 2014
Location: Wiscasset, Maine
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Default Re: Crankcase Vent PCV for 59A

Thanks guys!

Quote:
Originally Posted by 51 MERC-CT View Post
The only way that it may be effective is to seal the oil breather/filler opening so that a vacuum can be formed to draw air thru the front oil pan breather.
Yes, I've seen at least one other thread mentioning doing it this way. It could be okay as long as the air inlet was filtered some way.

Quote:
Originally Posted by hotcoupe View Post
So what i intend to do is bore each intake runner for a small (1/4" - 5/16") tube (weld, press fit, or epoxy) and connect those tubes via neoprene hose to a common plenum and then to a PCV on the stand pipe at the front of the block. In addition, i'am going to use some thin brass shim stock to block off the pan vent. Stay tuned. . .
Tom

I'm lucky in that my old Edmunds intake had a stock vacuum port in a connected chamber between the two carb mounts. It is what I'm using, enlarged to 3/8" NPT for the PCV and my Columbia vacuum source. I think I'll tap a new hole on top of the stand pipe for the PCV intake.

Glenn
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