Re: 2001 115hp johnson ocean pro
What's more important is the WOT rpm.....what is that at now with the new props?? As DJ said, I would want to be in the 5500 to 6000 range. 5000 is too low, if it is the WOT rpm.
The best propeller size for your boat and engine combination is based on the recommended operating range at WOT for your engine, which you will find in your operator's manual.
The goal in prop selection is to determine what propeller style and size will maximize performance for your boat, while allowing your engine to operate in the recommended RPM range. The correct propeller will prevent the engine from over-revving, yet allow it to reach the minimum RPM where maximum horsepower is produced.
Once your wide open throttle RPM falls within the recommended range of the engine manufacturer, you have a propeller that is suited correctly for your boat with respect to RPM.