Is there a way (other than welding / brazing) to harden the seat areas of the head at home, or is there a facility that does this? I know the factory 'induction hardened' some seats. But I doubt that is a viable process on a small scale.
I keep thinking of the case hardening compund I've seen gunsmiths use, but IIRC it takes more heat than I would feel comfortable heating he whole head to. Makes me think there might be something else though that could be applied to a local area.
I figure the obvious fix would be to tig some stellite to the head and cut yer own, but I figure if the casting is that thin, you would likely crack it with that too.
