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Straight Pipe
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Posted by Dellbertt on January 29, 2006 at 13:08:40 from (204.39.210.45):
Seeing a photo of a IH350U with a straight pipe-no muffler- reminded me of something I have always wondered about. I have always heard that running a straight pipe – no muffler- is not good practice because there has to be some backpressure in the exhaust system or you will burn valves, pistons, bearings and whatever. That has never made sense to me and I do not see any reason it should be true. Other than being noisy I don’t see the problem with running a straight pipe. Without considering noise or air pollution and keeping the conversation to an M, H or IH300/350 or similar, does anyone know for a FACT that it hurts a gas engine to always run without a muffler. Diesel any different?
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