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pcv valve & boost


james95gt

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do you have to put a check valve on A PCV when it is on a boosted car? and what vacuum should my car be running at idle???

 

Cap off the PCV and run a valve cover breather to a catch can, less oil in the intake parts.

 

 

the amount of vac pulled on the motor depends on the cam, heads, etc.

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I've heard alot of argument on how catch cans/pvc breathers should work concering vaccum, etc. After some serious thread debates, I went with a catch can that still runs under vaccuum. My plumbing still goes back into the intake but only after going through a catch can on the cool side of the car. This way I still have proper vacuum but with no oil in the intake and less fumes.
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I've heard alot of argument on how catch cans/pvc breathers should work concering vaccum, etc. After some serious thread debates, I went with a catch can that still runs under vaccuum. My plumbing still goes back into the intake but only after going through a catch can on the cool side of the car. This way I still have proper vacuum but with no oil in the intake and less fumes.

 

Agreed. I started with my catch can inline/under vacuum and then I switched to a vented catch can. The catch can filled very slowly under vacuum (about 5-6 months before I bothered emptying it), but when I vented the can I ended up with a full can of mostly water-based gunk after about 2 months, which I can only assume is due to water vapor from the can being vented.

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i always catch can it... it helps ring seal. and it will pull air from under the rings helping them seal

 

one wayhttp://i5.photobucket.com/albums/y196/gearhead559/Shop%20stuff/PCV_turbo_1fit.jpg

 

the other way

http://i5.photobucket.com/albums/y196/gearhead559/Shop%20stuff/PCV_turbo_2fit.jpg

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