Inconel exhaust valves
#4
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Because if you don't lifes gonna suck bad one day... I was on the edge of needing them at 400 hp... guess what.. I lost... better to spend the 400 now then the much more redoing engine, luckily I build mine myself or it woulda cost me tons more...
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yes, and when a fuel filter gets clogged up with chit because a boat was not ran hard ever then leans engine out real bad, the inconel saved the day!! at same time not even Dean Gellner ever saw a Inconel valve do this... I cat believe it didnt break...btw.. this IS inconel valve...
Last edited by Full Force; 03-01-2013 at 08:02 AM.
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Definitely not the place to save a few bucks. Inconel is a proprietary alloy that is extremely corrosion resistant and very tough. Quite difficult to machine. As said above, the exhaust valves in a marine engine experience extreme heat cycles due to the loads and the potential shock from some cold water.
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That's the other reason....cold water shock. Unless you are running completely dry tailpipes, then there is always water vapor flying around in the exhaust. All it takes is a few drops of that cold water hitting a 1500* exhaust valve, that isn't Inconel, and you are in for a bad day.
Eddie
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