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02-25-2019, 09:56 PM | #21 |
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Re: where to drill 21 stud intake for PCV?
There would be little reason for a PCV system if it didn't draw the vapors out of the crankcase. If it is drawing out of the crankcase it will pull air in around the real seal.
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02-26-2019, 08:46 AM | #22 |
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Re: where to drill 21 stud intake for PCV?
>>>If it is drawing out of the crankcase it will pull air in around the real seal.>>>
Sure. Just like the pan vent does. Not much more. This is lo vac stink entrainment in the air cleaner draft. Like road draft. Not hi manifold vac. Jack E/NJ |
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02-26-2019, 11:38 AM | #23 |
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Re: where to drill 21 stud intake for PCV?
A PCV works off of manifold vacuum, maybe we are talking different systems? Think you are referring to a passive system using air filter air flow. This post was about PCV using manifold vacuum.
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02-26-2019, 05:12 PM | #24 |
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Re: where to drill 21 stud intake for PCV?
Yep. That's why I suggested that Mumpsimus forget the valve altogether. Just go passive entrainment in the engine compartment if cabin stink is the problem. Jack E/NJ
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02-26-2019, 05:39 PM | #25 | |
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Re: where to drill 21 stud intake for PCV?
Quote:
Under the carb, my manifold looks different than the one in your pic, and there isn't a place to drill it, so I bought a vacuum plate with a 1/4NPT hole in it already. All that I have to do now is block off the draft tube with a freeze plug and I'm ready. If I can figure out how to post images, I'll reply later with images of how my parts fit together. |
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02-26-2019, 06:52 PM | #26 |
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Re: where to drill 21 stud intake for PCV?
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02-26-2019, 08:07 PM | #27 |
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Re: where to drill 21 stud intake for PCV?
Sounds like were are the same page. Just PVC is a bad idea in early 21 stud blocks. Guess my question would be why would you want to install a system on an engine that increases the contaminates in the oil?
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02-26-2019, 09:08 PM | #28 |
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Re: where to drill 21 stud intake for PCV?
So, I am in the process of having my 8BA rebuilt. Is there a different main seal I can use to be able to do a PCV? I was thinking of blocking the draw tube at the open end and tapping the indeed to the PCV to the side of that. Thinking this will provide the baffle effect. I think I have a threaded port right under the carb that I can put the suction end in. But, now you guys are blowing up my thought process with this seal business. This truck came from Nebraska gravel roads and inside it had a LOT of sand. Would like to keep it cleaner.
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02-26-2019, 09:24 PM | #29 |
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Re: where to drill 21 stud intake for PCV?
None of that discussion applies to a 59ab or 8ba, they have a rear main seal.
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02-26-2019, 09:33 PM | #30 |
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Re: where to drill 21 stud intake for PCV?
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