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Old 12-05-2017, 06:47 AM   #2
twistedtree
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City: Vermont
Join Date: Jan 2013
Posts: 10,092
I keep hearing about this sort of thing, and it astonishes me that boat builders continue to design exhaust systems this way, and that engine manufacturers accept the installations. I guess it's a calculated risk, betting that most boats are moored in calm conditions where they won't get bitten by this, and/or it will last long enough to be out of warranty....

I think I saw just this in a picture on TF recently (can't remember if it was a Swift Trawler or other boat). The exhaust from the engine sloped down to the mufflers, where a better design would have been for it to run up as high as possible in the ER, then loop down.
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