I'm thinking of installing aluminum exhaust manifolds on my 02 mercruiser , how good will this be?

Question

I found some powder coated aluminum exhaust with zinc anodes and I want to install them on my boat which is primarally in brackish water. Is this a good idea or should I find something different besides stainless(can't afford these)?

Answer 1

Even if you were in Freshwater, I wouldn't recommend aluminum manifolds. The other answer is correct in that aluminum will corrode almost as easy as zinc will. If I were you, I'd go with Stainless Marine manifolds (it's a company) that give you added performance, better looks as well as a nice replacement from stock. Look them up...we've installed plenty of those Stainless Marine manifolds and they work great and look really nice, too. Good Luck!

Answer 2

The answer is still the same Matt, but what are you trying to gain with this? Performance or looks or just a replacement part? Aluminum is not to far away from zinc as far as corrosion is concerned, while stainless is at the other end.