I just skimmed all this info in this thread. Please excuse me if I missed it; but have you ever run this motor on an actual boat or just in a tank? I have said this a million times and nobody believes me but big twins and RDs will often suck their own exhaust in a small tank (trash barrel, 55 gallon drum, etc.) and overheat; when in fact, there is nothing wrong with them when out on a boat. This is learned the hard way, at the Institute of Hard Knocks, believe me. If you haven’t ever tried it on an actual boat, just try it. If I am wrong, which I frequently am, sue me. I am just saying, this RD/barrel problem has happened to me more than once!
Long live American manufacturing!
