After knocking off 3 mufflers by low hanging limbs, I finally broke the goose-neck and manifold on my old Kubota. (I think a 1978, looks very similar to the one at the top of this page.) I bought it about 25 years ago when it had less than 200 hrs. (Still less than 800) on it and use it mainly for brush hogging.
I purchased a new manifold and had a friend weld a 1-1/4 inch pipe collar on a plate that was drilled to fit the manifold. I ran pipe at 45 degree angle and measured and threaded so that it cameback just below and beside of the left foot rest. This is running about 6 feet of 1-1/4 inch pipe. The inside diameter is larger than the muffler and there is no restriction as it is straight through. It is also as quiet as it was with the muffler. As far as I can tell, it was a perfect solution to the low tree limbs.
My question: Will this do my engine any harm? The pipe should transfer the heat away from the engine and I don't think the muffler had enoughl back-pressure to be noticed.
All opinions appreciated and if it is a good idea, hope someone else can use it. Cannot get pix now as I can't go out in cold weather because of bad lungs.
I purchased a new manifold and had a friend weld a 1-1/4 inch pipe collar on a plate that was drilled to fit the manifold. I ran pipe at 45 degree angle and measured and threaded so that it cameback just below and beside of the left foot rest. This is running about 6 feet of 1-1/4 inch pipe. The inside diameter is larger than the muffler and there is no restriction as it is straight through. It is also as quiet as it was with the muffler. As far as I can tell, it was a perfect solution to the low tree limbs.
My question: Will this do my engine any harm? The pipe should transfer the heat away from the engine and I don't think the muffler had enoughl back-pressure to be noticed.
All opinions appreciated and if it is a good idea, hope someone else can use it. Cannot get pix now as I can't go out in cold weather because of bad lungs.