45u
Active Member
You can mill the head and top of cylinder by using a flat piece of glass on a flat surface with some fine lapping compound. You can all so use the glass to check the head and top of cylinder with a feeler gauge.
Did the compression ring of the head cut a clean groove in the copper? That sharp cut is what forms the seal, so if the copper was too hard, it may have failed to seal.
Did you look carefully to be sure the head isn't cracked?
There was no marking at all into the copper. I am gonna put a torch to this gasket in minutes! Thanks, guys!