Re: help stuck head bolt
If it turns right now, heating it will just break it.
The threads are stuck, good chance you take some aluminum out of the block with them, but the best you can do is keep working it out.
Don’t worry about turning the other bolts out at the same time. Keep the others tight to take stress off of the stuck one until you get it to turn out 2-3 turns.
Be patient, turn it 1/4 turn back and forth 2-3 times and then go do something else for 15-20 minutes to let the threads cool. If you get them too hot the bolt will expand and gall the threads in the block.
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