Another 340 Question.

L.Fure · Jan 2, 2015

The exhaust manifold has a pipe threaded into it.The threads are ruined so the pipe/muffler wobbles around. It does look like the exhaust out-let is flanged. Was there an flanged exhaust pipe made for these? Or should I just braze the pipe into place and call it good?

Wayne in MN · Jan 2, 2015

Borrow a thread tap from a plumber friend & re-thread the manifold. 2" perhaps?? Take the old pipe for a sample.

Janicholson · Jan 2, 2015

1.5" IIRC Jim

gene bender · Jan 2, 2015

Just do like other post says chase the threads and get a new pipe. If you weld it then hit the muffler you can break the manifold. You will need some wd-40 or something to help the pipe tap but it can be done.

Hayfarmer · Jan 2, 2015

If you can't find a 2" pipe tap, you can take a piece of the same size pipe, like a short nipple and cut across the threads with a hacksaw, perpendicular to threads, in about 4 places. Use thread cutting lube and thread it into your manifold. I did this on a SMTA with similar problem. Take some time and thread it in until it gets real tight, then back out a ways, work it in and out that way and keep working deeper each time

D Slater · Jan 2, 2015

Down turned exhaust used the flanged pipe with a gasket between flange and manifold. Same manifold as a row crop. May have to make your own flange and weld a pipe to it for a vertical bolt on exhaust.

L.Fure · Jan 2, 2015

I worked on it this morning for awhile and got enough threads to catch to hold the pipe upright. I also shortened the muffler 4" so the tractor will fit into the garage.

Another 340 Question.

L.Fure

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Wayne in MN

Well-known Member

Janicholson

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gene bender

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Hayfarmer

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D Slater

Well-known Member

L.Fure

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