I have a 1996 Conquest Bowrider with a Merc 5.7L 260hp I/O. Last weekend I ran 55 mph (GPS) at 5500 RPM. Is this above the recomended WOT rating for this engine? I would like to upgrade from a 19" x 14 3/4" SS 3 blade prop to a 21" with same diameter. Is this ok or should I look for a larger...
