I measured the fire ring thickness on the used gasket I have hanging on the wall at .040 inch. It's a "Printo-o-Seal" or something like that. Maybe Felpro, not sure. I think (hope?) I have a couple new ones just like it in my gasket pile. I'll need at least two. One for run-in and a second for after I pull the head to check for witness marks on the pistons!

Open to suggestions.

Last edited by strokersix; 03/10/11 04:27 PM.