The baffles on the muffler on my friend Rick’s tractor were shot, so it was very noisy. The original muffler had been welded to the exhaust pipe, so I cut through the weld of the old worn out muffler and welded on a new one. I like to weld the muffler to the pipe or a Nipple, because the threads of the muffler are in thin sheet metal and they crack off as shown in the following link.
https://forum.millerwelds.com/forum/...ohn#post598219
The first picture shows where I cut through the original weld. The weld looked like bird $hit, but it held up until the muffler wore out so I can’t complain.
1. Old Muffler

The new muffler had a 1” NPT thread on it and the pipe was ¾” nominal pipe size, so I screwed in a 1” NPT close nipple into the muffler to reduce the hole size as shown below.
2. Muffler with nipple

Next I sawed off the nipple with about 1/16” protruding as shown below.
3. Muffler with cut down nipple

Unfortunately, I didn’t take a picture of the weld, but I welded the nipple to the muffler. Then I welded the muffler to the exhaust pipe as shown below.
4. Muffler welded to pipe

Last but not least I painted it. I didn’t bother to purchase high temperature paint so it will burn off the hot exhaust pipe, but the paint should still protect the muffler.
5. Muffler painted

-Don
https://forum.millerwelds.com/forum/...ohn#post598219
The first picture shows where I cut through the original weld. The weld looked like bird $hit, but it held up until the muffler wore out so I can’t complain.
1. Old Muffler
The new muffler had a 1” NPT thread on it and the pipe was ¾” nominal pipe size, so I screwed in a 1” NPT close nipple into the muffler to reduce the hole size as shown below.
2. Muffler with nipple
Next I sawed off the nipple with about 1/16” protruding as shown below.
3. Muffler with cut down nipple
Unfortunately, I didn’t take a picture of the weld, but I welded the nipple to the muffler. Then I welded the muffler to the exhaust pipe as shown below.
4. Muffler welded to pipe
Last but not least I painted it. I didn’t bother to purchase high temperature paint so it will burn off the hot exhaust pipe, but the paint should still protect the muffler.
5. Muffler painted
-Don
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