PCV oil leak - Team Camaro Tech
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post #1 of 8 (permalink) Old Mar 25th, 10, 06:33 PM Thread Starter
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PCV oil leak

I am getting some oil "seepage" out of my PCV valve grommet after some highway driving.

I am assuming that I need a new valve, but my quesitons is, which one should I get...my cam is a solid lifter (I don't know the specs) that only makes about 5 inches of vacuum at idle.

Keith
1967 Camaro
406, 10:1, comp xr282HR, Dart Iron Eagle 200cc, Holley Contender dual plane, Holley 750 DP
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post #2 of 8 (permalink) Old Mar 25th, 10, 07:53 PM
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Re: PCV oil leak

You likely need a new grommet; not valve. If the valve rattles freely, it's good.
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post #3 of 8 (permalink) Old Mar 25th, 10, 07:54 PM
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Re: PCV oil leak

Quote:
Originally Posted by Straight-line-69 View Post
You likely need a new grommet; not valve. If the valve rattles freely, it's good.
I thought that was a myth with PCV's???
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post #4 of 8 (permalink) Old Mar 25th, 10, 08:26 PM
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Re: PCV oil leak

Are you using any baffles with the PCV.

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post #5 of 8 (permalink) Old Mar 25th, 10, 08:27 PM
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Re: PCV oil leak

Purolator CV736V is the one specified for '69 302 and the 375hp 327 Corvette...both low vacuum solid lifter engines. If your valve cover is not baffled, there are baffled grommets over on the wall at Autozone with the dress up parts that will help a little bit with oil splash. You can also use a little disc of steel wool to help separate the oil and air.

If it rattles, it may mean it's good but if it's the wrong part it'll never open.

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post #6 of 8 (permalink) Old Mar 26th, 10, 02:13 AM
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Re: PCV oil leak

GM installs the PCV Valve on the Drivers Valve Cover as opposed to the Psgr Valve Cover because there is less Oil Vapour Density there as opposed to the Psgr Side which tends to be denser due to Windage. An under cover Baffle will help; however, if you have Girdle interference, the Girdle tends to work like a Baffel. If you are still plagued with the problem you may have to use a Dodge Style Above Cover Breather and run the PCV Valve from it. It is also a good idea to run a Dodge Style Breather on the Psgr Side Cover and hose it to the Air Breather Base Plate.

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post #7 of 8 (permalink) Old Mar 26th, 10, 07:46 AM
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Re: PCV oil leak

If you are talking about oil seeping between the rubber grommet and valve cover, I used "The Right Stuff" sealer by wiping some around the groove of the grommet before pushing it in place on the cover.Most autoparts stores sell it.It's a little pricey but well worth it.Let it dry overnight before installing the pcv valve.Be sure to clean all surfaces with some alcohol first to make a good bond.The sealer is by far the best I have ever used.

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post #8 of 8 (permalink) Old Mar 29th, 10, 05:27 AM Thread Starter
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Re: PCV oil leak

I have no baflle, but do have a stud girdle...I will try the new grommet w/ th ebaffle for autozone to see if that helps. I am running a breather cap on the pass side (PCV is on the driver side), but do not have it hosed to the air filter housing...

Keith
1967 Camaro
406, 10:1, comp xr282HR, Dart Iron Eagle 200cc, Holley Contender dual plane, Holley 750 DP
Muncie M-20
GM 8.5, 3.73 posi
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