 Silicone valve cover Gaskets, Anyone tried these??? |
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| mgphoto |
 Apr 13 2011, 10:24 AM
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#1
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"If there is a mistake it will find me"  Group: Members Posts: 1,339 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California  |
Hello and thanks for taking the time to look.
I picked up a set of Gasket Innovations silicone valve cover gaskets, for the longest time I have had problems with leaky valve cover gaskets, I have resorted to using shellac gasket compound on my cork gaskets which seals the covers pretty well but removal is a bitch and adds a lot of time to the valve adjustment process. Has anyone used the silicone gaskets? Any advice will be welcome. Thanks, Mike ps: image stolen from their website.  |
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| Rand |
Apr 13 2011, 10:34 AM
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#2
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
I've never had issues with the cork ones, and never used any kind of treatment/compound on them. I wonder if your surfaces are flat and clean?
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| zymurgist |
Apr 13 2011, 10:49 AM
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#3
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"Ace" Mechanic Group: Members Posts: 7,411 Joined: 9-June 05 From: Hagerstown, MD Member No.: 4,238 Region Association: None |
I use GM rubber gaskets on my iron Vortec heads. Never a leak from the gasket area.
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| 904svo |
Apr 13 2011, 11:22 AM
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#4
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
What you will fine is when they are first installed they work great, after the first valve adjustment you can't stop them from leaking. The silicon shapes itself
after a few heat cycles on the engine. This is what I found after trying them. Plain cork gaskets work best. |
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| Geezer914 |
Apr 13 2011, 01:35 PM
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#5
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Geezer914 Group: Members Posts: 1,423 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States 
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Just use the cork gaskets and Permatex Hylomar gasket sealer. You can remove the valve covers and replace them using the gaskets without applying any more Hylomar. Great stuff, I use that shit on everything!
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| Bartlett 914 |
Apr 13 2011, 01:54 PM
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#6
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
Make sure your cover isn't warped. Remove the gasket and test fit it on the head. This will tell you a little better how flat it lays.
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| drgchapman |
Apr 13 2011, 04:10 PM
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#7
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Current Stable Group: NoClassifiedAccess Posts: 922 Joined: 20-September 04 From: Portland, OR Member No.: 2,789 Region Association: Pacific Northwest |
Silicone gaskets tend to walk out of place.
Cork gaskets are best. |
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| Dave_Darling |
Apr 13 2011, 04:50 PM
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#8
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914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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The "VW" stamp on the covers goes on upside down. Use some sealer in the corners of the cover to tack the gasket into place. Not much, just enough to keep the corner of the gasket in the corner of the cover.
If the cover and the head surface are both flat and true, you shouldn't have any leaks. And you can pull the cover off and put it back on without having to re-goop the gasket at all. --DD |
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| VaccaRabite |
Apr 13 2011, 07:09 PM
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#9
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En Garde! Group: Admin Posts: 13,445 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
What I have been doing is putting a THIN smear of sealant on the gasket where it meets the cover (no sealer on the head). The gaskets last several valve adjustments when done this way and my covers never leak.
Zach |
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