Re: Torn between two used boats
Exhaust manifolds on an inboard engine get rusty internally, because they have water jackets all around the outside, to cool the exhaust. Freshwater/saltwater it doesn't matter, eventually they rust out internally. When they rust out, you get a cylinder or two that fills up with water after you turn the engine off. This leads to hydrolocking. Although most people mistake it for "the starter went out" and leave the cylinders full of water for a week or two while they get around to replacing the starter (which usually does have a busted bendix). So after a week of water sitting in a cylinder, you have a rusted up, junk engine. So bad exhaust manifolds can ruin an engine.