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OMC 5.7 1989 lacks RPM at WOT
I just bought a used Bayliner Trophy 23 foot and the engine is OMC 5.7
1989 (model 574 APRMED), i believe it has 250 HP. The prop is 15'' x 17''. But the max rpm I get is 3400. Is that the maximum rpm on this type OMC engine? I should think it lacks at least 1000 more rpm. I believe the engine should be able to get at least 4400 rpm at WOT. The max speed i currently get is just 24 knots. The engine seems fine and I just replaced the spark plugs. Anyone has ideas of what could be wrong? Thanks Jens-Erik Nuuk, Greenland My boat: http://www.123hjemmeside.dk/Nukappiaaluk/1442331 |
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