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Old 08-20-2009, 06:40 PM   #1 (permalink)
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Default Heat to separate exhaust pipes ?

Attempting to remove a exhaust tailpipe from the muffler to replace on the Mach 1. Using liquid Wrench at the present.

Would the application of heat with a propane torch help remove the rusted in pipe?
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Old 08-20-2009, 07:17 PM   #2 (permalink)
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Not sure if you would gain much BUT,,,the liquid wrench might catch fire.
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Old 08-20-2009, 08:07 PM   #3 (permalink)
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Heat will help. Liquid wrench will flare up and burn off. But I don't think you will get it hot enough with a propane torch unless you have a big one. Need to get it hot enough, red hot, to allow the indentation from the clamp to "relax" enough to allow separation.
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Old 08-21-2009, 07:38 AM   #4 (permalink)
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Heat would require an Oxy/Act torch but probably not a good idea as your near the gas tank right?

The the pipe you are replacing is inside the muffler pipe then cut it off where the muffler pipe ends and you can grind/cut out the remaining piece inside the muffler. Or leave it and expand the new tailpipe end to fit over the muffler pipe.
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Old 08-21-2009, 10:27 AM   #5 (permalink)
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TRY MAPP GAS you can use it in your propane torch , it's just a mix of acetylne and propane for a hotter flame .
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Old 08-21-2009, 12:42 PM   #6 (permalink)
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Were the pipes held together with a muffler clamp? If so the clamp squeezed the two together and put a small crimp in both of them. Pulling them apart is almost impossible.

If the pipe is INSIDE the muffler and you are replacing the muffler then get a cutting wheel and start cutting a line down the length of the pipe. Cut deep enough to get through the top layer the use a chisel to peel it back.
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Old 08-21-2009, 04:12 PM   #7 (permalink)
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Sometimes you can "unscrew" the pipe from the crimped portion using a big pipe wrench, channel locks or a strap wrench.
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