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PCV alternatives

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Gregaust
ChrisH
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Post  ChrisH Wed Feb 02, 2022 10:37 pm

so, my goal here is to keep the blow by gases out of my intake, off the back side of my valve, etc hence why i am trying to avoid PCV.
i have a 578 that i spin up to 7000. it has a standard ring package (not thin in other words). during these higher revs there is certainly gases to evacuate.

i know the best answer would be a proper vacuum pump set for < 10" as this is a street driven engine. i have tried breathers and even a smog pump vacuum pump (electric)

neither were satisfactory. electric pump couldn't keep up. breathers hold more back pressure than i would like.

it seems besides a proper vac pump that i could just run an open draft tube or possibly header evacs. but, it seems the head evacs are not a good street solution.

so im down to a draft tube or pump (ironically the book ends of technology for this problem).

has anyone had a successful solution employed on a big street engine that revs a little?
i guess my fundamental question is what is the draw back to a draft tube?

thanks all

ChrisH

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Post  Gregaust Fri Feb 18, 2022 1:53 am

http://mewagner.com/

What about this . I got one it is a real nice piece . To stop any oil put a oil separator inline maybe ?

Gregaust

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Post  rmcomprandy Fri Feb 18, 2022 11:38 am

A small O.E.M electric power brake vacuum pump should work fine.

Down-Draft tubes worked well but, the EPA didn't accept the hydrocarbon emissions emitted from them.

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Post  69F100 Fri Feb 18, 2022 2:49 pm

I use a electric vacuum pump off a early 90s Chevy Comaro hooked from the valve cover  to the evac in my headers. It works good I turn my 552 7200
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Post  akacolonel Tue Mar 22, 2022 3:35 pm

I also use the MEWAGNER dual adjustable pcv, along with a CFM Performance breather.. let's air out, not it. Motor is 523 11-1..PCV alternatives 20210812
PCV alternatives 20210811
PCV alternatives 20210810
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Post  Mark Miller Tue Mar 22, 2022 9:10 pm

akacolonel wrote:I also use the MEWAGNER dual adjustable pcv, along with a CFM Performance breather.. let's air out, not it. Motor is 523 11-1..PCV alternatives 20210812
PCV alternatives 20210811
PCV alternatives 20210810

Very Cool Car!!

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