Man...my resonator was shot and rattling so I got a new (b-pipe?) resonator section from a friend and went to put it on today, to my suprise the previous owner (bought car month ago) didnt use heat grease on the bolts connecting to the cat, all the liquid wrench and all my stregth couldnt move it, I had to goto a muffler shop and have them break the bolts off (break them in half) well point is, heat grease is good, dont let your bolts sieze

 

 

a MAP or oxygen gas torch is your bestest friend there- had the same prob myself.

 

yeh..rusted old bolts are a pain. I've broken 1 or 2 bolts in the past.

 

yeah I used to have a torch and sold it to my friend...just when I need it...

 

I wouldnt feel safe putting a torch under my car near the gas..
I was going to near the tranny..people said that is dangerous too

 

By the time the bolts are badly rusted, the exhaust temperature has messed up their heat treating, so they are usually soft & easy to break. I just don't expect to save them when I work on exhaust. Why spend an hour trying to save a dollar's worth of nuts & bolts? Sawzall