jst1more 40 #1 Posted March 6, 2014 How do guys recommend removing an old rusted away, cigar type muffler, from an old Clinton engine? I've trying squirting penetrating oil on it every few days, and it is still not budging. It is hard to get a bigger wrench on it without removing the head and I don't want to break something with too much torque. Can you heat the muffler pipe up a bit? Thanks for your suggestions. Scott Share this post Link to post Share on other sites
swarfeater 49 #2 Posted March 6, 2014 i've done this a few times on impossible to remove pipe threads and it will work, first cut the pipe off but leave enough to grap with vice grips. next, with a tig welder(you will probably have to go to a shop for this) build up some weld beads on the inside of the pipe as deep as you can get in. dont be afraid to put the weld in. when it cools, the weld will shrink,shrinking the pipe along with it, and it is amazing how much it will shrink. the piece, unless it was gaulded in the first place will turn right out. this method also works quite well to remove bearing races that were pressed in. i do this 40 or 50 times a year on all kinds of power systems. on large parts, stick welding works but this is too small for that. 4 Share this post Link to post Share on other sites
Ed Kennell 37,998 #3 Posted March 6, 2014 I've never tried welding, But knowing how much weld shrinks, I'm sure it would work. If you don't have access to welding, the other method is to cut off the muffler, then using a sawsall or hack saw blade, cut a slot in the inside of the pipe. Then use a punch or chisel to fold the pipe in on itself. Share this post Link to post Share on other sites
KATO 115 #4 Posted March 6, 2014 (edited) Try this one it works good ooops like ekennell said Edited March 6, 2014 by KATO 1 Share this post Link to post Share on other sites
jst1more 40 #5 Posted March 7, 2014 Thanks all for the great suggestions and help, come Saturday I'll have time to work on finishing up this project. Scott Share this post Link to post Share on other sites
dbartlett1958 96 #6 Posted March 7, 2014 i've done this a few times on impossible to remove pipe threads and it will work, first cut the pipe off but leave enough to grap with vice grips. next, with a tig welder(you will probably have to go to a shop for this) build up some weld beads on the inside of the pipe as deep as you can get in. dont be afraid to put the weld in. when it cools, the weld will shrink,shrinking the pipe along with it, and it is amazing how much it will shrink. the piece, unless it was gaulded in the first place will turn right out. this method also works quite well to remove bearing races that were pressed in. i do this 40 or 50 times a year on all kinds of power systems. on large parts, stick welding works but this is too small for that. Swarfeater, I learned this from my grandfather. I have used the same method several times over the years with total success. Share this post Link to post Share on other sites
