2016 60hp e-tec running oem 15 pitch 3 blade aluminum prop 6400 rpm's trimmed@ full throttle. Would like to change to 15 pich rogue 4 blade stainless. Will this change lower my rpm's to 6000 top and trimmed? Boat is CS 16' CC JVX
The Rogue style prop would need to be about one size larger pitch to reduce the rpm by 400 or more.
Are you sure the 6400 rpm is accurate?
Unless the rpm guage is off calibration, which I don't think is the case. I rarely run wide open but 6400 rpm is the number. My question is aluminum 3 blade versus stainless 4 blade with 15 pitch. Going from 3-4 blades and different metals will rpm's drop or will I need a 17pitch 4 blade.? Thanks
The reason I asked if the tachometer was accurate is because the engine has a built in rev-limiter that does not allow the engine to exceed 6250 rpm. If your tach reads 6400, then something is not correct.
A 15" Rogue will lower the top rpm by about 200 to 300 rpm or so, but a lot depends on the boat hull. It may not be the same with different boats. It is by test runs only that you can know for sure.
Your first course of action should be having a dealer work with you and use the diagnostic software to compare the actual rpm of the engine to what is displayed on your tachometer. Once you know the actual rpm, then try various props.