[A26B]

Originally Posted by gbmidyear66

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....

Glenn,
I would suggest you inspect both surfaces to insure they are completely flat AND that there is no damage to the surfaces.

I do recommend installing gaskets dry, but the mating surfaces must be degreased with brake cleaner or carb/choke cleaner to remove all residue.

The gaskets have a nitrile rubber bonding agent and grip very well, as long as the mating surfaces are clean & dry.