jim told me the fire ring in gasket is larger in dia than cummins. said he's made 904 hp on that gasket. i think he told me fire ring was 1/4 inch
interesting. who distrbutes these gaskets.
they make replacemet parts and gaskets for diesels. talked to a guy named jim koch he said he uses there gaskets in his pullers with no falures. also no orings or fire rings in those engines runs a 3.25 turbo.
Interesting. Jim is a cool guy. One of my favorites as a matter of fact.
I sell the Mcbee line as an aftermarket choice, but I have not had luck with the HG. $.02