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RE VISITING EXHAUST PIPE REPLACEMENT

S

S2710

Well-known Member
A while back I ask about getting the pipe out of a manifold. Well this afternoon I went to work on it. I heated up the manifold very hot and had a 4 foot pipe on the pipe wrench and with steady pressure on it the pipe came loose. I then chased the threads out with a tap and screwed in a new piece of black pipe. When I got it as tight as I could get it I fired up the torch and heated the manifold and after it was good and hot I got another two turns out of it. Thanks to eveyone who gave advice.

Bob
 
Don't get to carried away with that 4 ft pipe wrench. manifolds are cast and you can crack them if you put to much presure on them. I think you got lucky. Kent
 
I only used the pipe when I took it off. When I put it back on I just used a 18 inch pipe wrench.

Bob
 
Personally, I would heat it back up to loosen it up. Then let it cool, and then re-install to being tight. If you split the manifold, you have more problems than you needed and wanted to have.
SDE
 
S2710,

Unless someone had said that they had actually broken an attached-to-head exhaust manifold with a pipe wrench, I would pay them no nevermind. Too many nervous Nellies out there.
 
Just a note - I had some 2" heavy wall aluminum conduit laying around. Threaded it and used it for exhaust pipe on my H. Was a little concerned with it taking exhaust temp, but so far it's working great. Looks real good and will not corrode or rust.
 
Don't know about breaking one bolted to the tractor, but found out the hard way it will crack the manifold vertical with the threads.
Had a pipe leaking a few drops of water and exhaust after installing. Should have let it go and rust or carbon off. Instead I gave the pipe about half a turn more and split the manifold.
 
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