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Old 03-05-2019, 05:15 AM   #2
Cigatoo
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City: Narragansett Bay
Vessel Model: Grand Banks 36 Classic #715
Join Date: Sep 2016
Posts: 1,857
You mention standing water. There should not be standing water in the elbows I wouldn’t think. There are many boats with exhaust systems that are not correctly designed. You might want to contact a fabricator on the west coast that can have a look and re design. May be cheaper than going with Cat.

Here is some good information
https://www.sbmar.com/articles/marin...oomed-to-fail/
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