Should I change the PCV valve? - Team Camaro Tech
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post #1 of 7 (permalink) Old Apr 16th, 11, 09:51 PM Thread Starter
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Dave
 
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Should I change the PCV valve?

I have a stock ZZ383 GM crate motor with 18 inches of vac. at idle. I constantly have to clean away oil that seems to seep out from around the PCV grommet. I have the polished alum. center bolt valve covers from GM. They do NOT have baffles. The PCV valve is one that is specified for a Z/28 302 by Rick's Camaros. Should I change to a different PCV valve that is for a higher idle vac. than the Z/28. Would this help my oil seepage? A new grommet doesn't help.

The PVC venting is the OE setup with a cowl hood and matching air cleaner.

Suggestions?

Dave

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post #2 of 7 (permalink) Old Apr 16th, 11, 10:29 PM
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Re: Should I change the PCV valve?

Use two PVC valves? I had to on my boy's truck.

Ron
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post #3 of 7 (permalink) Old Apr 18th, 11, 06:29 PM Thread Starter
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Re: Should I change the PCV valve?

btt

Dave

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post #4 of 7 (permalink) Old Apr 18th, 11, 09:40 PM
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Tom
 
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Yes. Definitely. I recently had this same issue. Changing from unknown PVC valve to correctly rated one cleared up the seepage around the grommets.


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post #5 of 7 (permalink) Old Apr 18th, 11, 09:40 PM
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Wes
 
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Re: Should I change the PCV valve?

First, you need valve covers with baffles for the PCV system. Are these GM valve covers? If so, they should have baffles.

Secondly, a stock 302 pulls about 13-14 hg of vacuum at idle, so yes, find a PCV valve that's for a milder engine; maybe one for an L-48 or something.
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post #6 of 7 (permalink) Old Apr 18th, 11, 10:45 PM
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darrell
 
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Re: Should I change the PCV valve?

gotta have baffles --it cant suck crank case pressure correctly with oil being constantly sprayed on pvc plus its gonna leak
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post #7 of 7 (permalink) Old Apr 18th, 11, 11:00 PM Thread Starter
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Re: Should I change the PCV valve?

The valve covers I have are the GMPP covers for the vortex center bolt heads. They have no baffle. I may try the finned Z/28 cover I have, they are baffled. With the vortex heads you can use either style covers

Dave

Known to run with scissors....
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