On Tue, 21 Jul 1998, Patrick Foltz wrote:

> Were those 50 year old spark plugs in aluminum heads?  Heat should only be
> used with extreme caution when trying to remove any bolt from aluminum, it
> doesn't glow and then melt like iron, giving you a gentle warning.  I didn't
> read the original post, but would advise against heat in removing anything
> from a head.  That's my $0.04 worth.  (I am a mechanic, I charge more)
> Patrick
>
       Patrick,
   Sorry to disagree but this is exactly what I'm trying to say.
You have little or no experience with a torch. The mass of the head
is going to absorb most of the heat making it almost impossible to
do as you suggested. Not just my $0.02 but the Facts! Have you
ever cut a muffler pipe appart from the inside of another rusted pipe?
Have you ever burned away a nut form it's mounting bolt. Without
the experts we should not be tring to comment on this  impossible
tasks.
                              Eric