Want to use a good quality gasket on my factory manifolds. I know they didn't use gaskets originally but I've had leaks before and I want to try something new. Anybody used the Copperseal gaskets? What exhaust gasket do you prefer?

 

My new favorite exhaust gasket is Remflex. I had to use gaskets on the manifolds on my 67 Delta due to pitting. Just pay careful attention to the installation torque and do not overtorque the bolts.

 

I saw some people had used those. Are they thick like the ones that come in a felpro kit or are they pretty thin? I don't have much for pitting but I have had small leaks before. That's what I'm trying to knock out this time around.

 

They are thicker than the ones in the FelPro kits and are composite with graphite and a metal inner layer.