Geeez, not a good thing to read when I am getting ready to remove my
exhaust system :-)

Ben speaks of heating, and then dumping on the cold water. I am aware
that he knows what he is talking about <g> its just that I haven't done
very much with a torch on rusty bolts.

I just got done torching the bolt on the spindle/knuckle while replacing
the struts on my son's car, and I  merely heated the spindle, and after
I got it all nice and hot, I had him twist the nut out, while keeping
the heat on the spindle, near the bolt.

Did I do that completely wrong? Should I have torched it to the max, and
then tossed cold water on it? It sounds dangerous, or at least possibly
disasterous, but most of you will know more than me, so I figured I
better ask.

When I am pulling the exhaust bolts  from the head, I should heat it up
good, and then hit it with cold water? Like from a bucket, or a maybe a
spray bottle? Do I want to directly heat the bolt, or focus on the head,
where the bolt attaches?

Guess I better learn some more, before I go for it, as I would have
heated the head where the bolt attaches, and then twisted the bolt
loose, while it was still hot, and/or being heated by the torch.

Happy to hear the right way, from those who do it often.

Thanks a lot,

John