Quote:
Originally Posted by Dave R
That sounds reasonable, but in practice, automotive engines that have been marinized work fine in boat applications. We've been using them for decades and when they fail, it's almost always just due to neglect.
Just to be clear, "marinizing" an engine just means: special gaskets, freeze plugs, raw water cooling and USCG approved external components. The innards are the same.
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I get that, my point is that most marine engines that are modified auto engines are probably detuned from the original auto horsepower for longevity purposes. I have a Grand Cherokee now that produces something like 365 hp, if I used all that HP all the time I'd probably going 110 to 120 mph constantly. I'm willing to bet that engine longevity would be greatly reduced.