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gbmidyear66 · 09-10-2013

I have a recurring problem with gasket sealing after porting my plenum (so thinner gasket and less meat for them to hold onto) . I'm on my second set of gaskets after porting, and just ordered my third set tonight from Jerry.

My first (std thickness) failed after a month - the vacuum literally pulled the material towards the intake hole. My second set (50% thicker) have lasted about 4K miles. Tonight I notice my idle is up to 1,000 RPM, whistle coming from under the hood. Sprayed some water and found the leak at #1 cylinder.

I normally just use contact cement to attach the gasket - can someone recommend a better solution?

Thanks

Glenn

Glad I did the coolant bypass - at least the plenum removal is easier now....

09-10-2013	#1
gbmidyear66 Join Date: Feb 2008 Location: Vancouver, BC Posts: 251	Ported Intake Gasket Woes I have a recurring problem with gasket sealing after porting my plenum (so thinner gasket and less meat for them to hold onto) . I'm on my second set of gaskets after porting, and just ordered my third set tonight from Jerry. My first (std thickness) failed after a month - the vacuum literally pulled the material towards the intake hole. My second set (50% thicker) have lasted about 4K miles. Tonight I notice my idle is up to 1,000 RPM, whistle coming from under the hood. Sprayed some water and found the leak at #1 cylinder. I normally just use contact cement to attach the gasket - can someone recommend a better solution? Thanks Glenn Glad I did the coolant bypass - at least the plenum removal is easier now....