Rmoore
Well-Known Member
Does anyone know what a valve seat extension is ? And what is its purpose ?
Myself !! I googled it really didn't find anything !! Been doing my own valve jobs for years. But never heard of such..Huh? Ive heard of a spark plug non-fouler...sort of an extension, but never a valve seat extension.
Wow. It does say very thick head gasket. Pics can be deceiving but looks like at least a half inch of gasket req'd to retain some CID. De-stroke crank? Very short slugs? Whatever it takes I guess.