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3vze valve cover gasket Q #850361 12/05/07 05:40 AM
Joined: Jul 2006
Posts: 11
yekrahs Offline OP
Need a Spot
I need to replace my vcg's and was wondering if i could use a tube gasket maker/sealant (high temp. and right for the application) because it seems that if done right it would (hopefully) work better than the pre-fab rubber ones that i am replacing a year after an engine swap.

Last edited by yekrahs; 12/05/07 05:51 AM.
From the Off-Road World
Re: 3vze valve cover gasket Q [Re: yekrahs] #850362 12/05/07 08:36 PM
Joined: Aug 2006
Posts: 95
OutlawMike Offline
Getting the Wheeling Fever
I use the Felpro blue molded rubber gaskets with high temp RTV. I have not had any leaks after doing this, but, it is a bear to do a valve adjustment, as getting the valve covers back off is a big pain in the arse. There is a lot of cleanup required after removal with this method, as the gasket is bonded so well to the head it tends to tear apart, rather than peal off. But, it does not leak, and valve adjustments are not that often.

Do not use too much of the RTV, just a thin coating on the head and a small bead in the groove on the valve cover.

I would not recommend using straight RTV without a gasket, as you would be using a large amounnt of RTV that will most likely squish out into the head and cause oil flow problems.


Re: 3vze valve cover gasket Q [Re: yekrahs] #850363 12/06/07 12:35 AM
Joined: Jan 2000
Posts: 454
Toy4x Offline
Have you isolated the leak? I like the factory gskts, but using FIPG in the corners (by cam seals) is a must. Course you cud use something diff than FIPG, but that stuff is awesome. I agree, RTV alone is not a good idea.

Re: 3vze valve cover gasket Q [Re: yekrahs] #850364 12/06/07 05:56 PM
Joined: Aug 2006
Posts: 95
OutlawMike Offline
Getting the Wheeling Fever
Another thing to note on the subject of using straight RTV:

The valve covers for the 3VZE are plastic with hard stops pressed into the screw areas. This is to avoid putting a compression load on the plastic, which is always a bad thing, as it will creep over time and you will lose your clamp load from the screws.

When you tighten the screws the plastic cover does not make contact with the head, there is a nominal gap designed in. If you do not use a gasket this gap would allow all of the RTV to squish out sideways.

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