The Four Winns Fast Facts shows that boat came with the 14.25 x 21 prop. Max rpm range for that engine is 4600 to 5000. You didn't say what speed you got or how the boat was loaded, but it appears that it is not making full power. Is the outdrive original? If it was replaced, there might be a different gear ratio. Generally, a two inch change in prop pitch from 21 to 19 would increase rpm 300-400 rpm. These boats are normally propped to the high end of the max rpm range. If it is running smoothly, it might be an exhaust restriction. I had a '95 190 Horizon that had a flapper valve(check valve in the exhaust system) that came loose and partially blocked the exhaust. Max rpm was 4000 instead of 4600. I understood that Volvo quit installing them in '99. Wish I had better answers for you. Good luck.
_________________ Surface Interval: A scuba diving term for that time between dives to relax and prepare for life's next great adventure.
Current boat: '02 FW 268 Vista Previous boat: '95 FW 190 Horizon
|