I've been searching for the merits of aluminum vs. iron exhaust... but there just seem to be alot of speculation that aluminum should corrode faster and that the gasket interface would be prone to leaking because of the dissimiliar metals issue. In theory this makes sense, but I haven't seen anything from people who actually used aluminum on a saltwater boat. What about the aluminum kits that have ceramic coating? At Perfprotech, they offer ceramic coated aluminum w/ a 5 year warranty for $1065. I can get something like an Osco cast iron (same as I have now, which is fine but heavy) with only a 3 year warranty for around $680. Based on the warranty, seem like the aluminum would last longer. Really, for me, the weight difference is the selling point.
Anybody have experience with aluminum exhaust in the salt... or experience w/ the ceramic coated type?
Anybody have experience with aluminum exhaust in the salt... or experience w/ the ceramic coated type?
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