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Old 01-17-2022, 07:29 PM   #8
chriscritchett
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Join Date: Jan 2012
Posts: 164
Big no-no for other reasons as well. Best to go with the separate thru-hull, but if you were really against that, what many big sportfish do is join the gen exh run to the main engine piping just before the outlet and do a ‘pipe-within-a-pipe’ detail all the way back to essentially have 2 ‘separate’ runs share the thru-hull outlet. I’m sure if you search the inter webs you can find a picture of what I’m talking about.
But best & probably easiest to add a new hole.
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