For as long as I have owned my Farmall 200, the muffler has not fit tightly on the exhaust pipe. The problem is that the exhaust pipe is too small, it has rusted away over the years and decreased the size enough that the muffler can't be tightened enough to fit. This is a common problem with IH tractors and I am sure a lot of you have faced the same issue. In some ways it was handy, when I had to remove the muffler for one reason or another all I needed were gloves, but I wanted to fix it. As I looked at the pipe, it looked to be rusted solidly in place and I had my doubts that I could remove it. I bought a replacement pipe years ago, but I was hesitant to work on it. I knew that the plan B would be to buy a replacement manifold which is a scary proposition too. I finally decided that it was time to try. I took my offset grinder and cut the old pipe off and notched the remaining pipe. Then I used a punch and chisel to knock out the section that I had notched. To my surprise, the remaining pipe then turned out by using a pipe wrench on it. Eventually, I was able to turn it with my fingers.
It took only a few minutes to remove the old pipe. I was shocked. Looking at the threads in the manifold they were in very good shape.
So, I screwed in the replacement pipe and tightened it down as much as I could using a pipe wrench. As you can see, the muffler now fits tight and no longer sits on the hood. I did buy a 1 1/2 inch tap on ebay and my plan is to remove the pipe and clean up the manifold threads so that the pipe will screw in further.
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