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Old 01-27-2013, 08:46 PM
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SeaCup SeaCup is offline
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Join Date: Jul 2012
Boat: 1992 MC Prostar 190
Location: East Tennessee (Knoxville)
Posts: 73
The bottoms of my manifolds usually rust too. I figured it was because that is a hot spot where the exhaust gases hit. I am in the process of a re-power and have repainted mine with VHT high temp paint. Time will tell if it holds up. Any type of rust inhibiter will most likely burn off the bottom of the manifold.
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