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Old 05-04-2020, 05:09 AM
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Red face Muffler

I am recommissioning a mono hull twincraft boat with a Zenoah 230 PUM, tuned pipe and small muffler but its way too loud. My question is what are people using nowadays to run in a quieter environment, realizing the tuned pipe will not fit inside the hull area adjacent to the radio box.and exit through the transom.
Any help will be appreciated

Last edited by tentuna; 05-04-2020 at 09:15 AM.
Old 05-04-2020, 04:46 PM
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I don't like a muffler hanging off the end of a tuned pipe so I use pipes with internal stingers in them. If one doesn't already have it I use a piece of brass tube that fits snug into the stinger end of the pipe,up to the center of the band in the pipe.I drill a small hole or two in the tube just past where the stinger meets the pipe to drain any oil or water out of the pipe.

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