View Full Version : Gasket sealant

01-28-2009, 04:07 PM
Hi All, I am changing over my Exhaust Manifolds as the old ones were frost damaged. I have the new manifolds and new gaskets, Do I need to apply any kind of sealant to the gaskets before I fit the manifolds or place them where the old ones were and fit manifolds. All replies appreciated in advance

01-28-2009, 05:12 PM
Just replaced my riser gaskets last year. The machined areas on the manifold and elbow (flat areas the gasket seals) looked to be in good condition on my engine. So, I just put a thin coating of Aviation Form-A-Gasket on both pieces and re-assembled everything.

If those machined areas are rusted heavily and not smooth anymore there is a possibility the new gasket won't seal as well as it should. Not to worry cuz that can be fixed by any machine shop. It just requires a little more work on your part...