Questionwill not loosen must remove to service probable crack previous owners (two sisters), drove to desert low on water have used penetrating oil, impact wrench, breaker bar (have cracked three quality sockets), no luck yet should I try heating with torch?
AnswerHi Michael,
I am sorry to say that I think you have no other choice.
If you think that the head anyway is most probably cracked, then damaging it further may not be a big deal.
But if you can soak it further with penetrating oil and then borrow a 3/4 or 1 inch impact wrench, then you may be able to get it out. At its worst, if the bolt breaks, you can drill and easy out it later.
It is a hard decision to make.
Tino