Well, I'm in the same situation as many of you have been in the past.
I'm trying to get the exhaust bolts and studs out of the heads.  I
pulled the motor because I knew I would have "fun" trying to get them
out (plus I had a few other "little" things I needed to do which would
be a lot easier with the engine out.  So fare I used Power Blaster to
soak them, vibrated them with hammer and no luck.  Then I heated them up
with a brazing torch, got them red hot and snapped the heads of two
bolts and the stud would not turn either.  I tried the heat again on the
stubs left from the bolts...no luck with Vice Grips...I twisted of a bit
more of the bolt.  Soaking with PB again and will try a bolt out tool or
a stud extractor.  I might try welding a nut on to see if that works but
I cant see how that would be any more effective than getting the stubs
red hot like I did already.  Very last resort will be drilling and
extracting, but I'm not looking forward to that job :(

Hopefully the water pump and thermostat come of better...Camping season
is almost here...

Pascal
'84 Westy