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Old 06-09-2012, 04:17 PM
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Streak Streak is offline
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Join Date: Apr 2008
Boat: 2006 Mastercraft 197
Location: Innisfil, Ontario
Posts: 66
After some in-depth research on this site (thanks to macattack for his input), I found that the exhaust manifolds have casting manufacturing holes that are covered by aluminum caps (welded). These actually act as anodes to the exhaust manifold and corrode over time - even in fresh water.

Tempo fix seems to be JD weld, proper fix: aluminum casting caps from Indmar TIG welded to the manifold after proper removal of the corroded parts.

Once again, I'm impressed with the quality of info and people on this site and will keep using it to help others if I can.

Thanks all
Streak
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