Whats the best way to separate two exhaust pipes that one is slipped over the other without damaging either one of them? they are 2 1/2" diameter and not really rusty, just some minor surface rust only and the top one has a little mark from the clamp crimping. and i do have a B1 actelyene torch too. i plan to reuse these pipes. what are your ideas?

 

lots of muscle and patience.

 

Pretty much what you said, i'd use a torch and weaken the welds and break it off.

 

man these thing are stubborn. i have been wrestling with these pipes for 3 days. and nothing.... i have been heting them up until they are red and nothing. i think there maybe 1 tiny spot weld on the side but im not sure. does anyone know if the factory put 1 small spot weld on the side to hold this catalityic convertor to the Y pipe???