Quote:
Originally Posted by lancelot9898
My WOT reading is only 2300 rpm which is quite a reduction from the 3600 rating.
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Most all engine manufacturers suggest the engine be able to hit max rated throttle with a clean prop and bottom. If you can not hit max RPM you are over propped. Being over propped/pitched is not good for the engine and is one more factor that can lead to bore glazing. You should adjust your prop so you can hit the max rated RPM.
You're not "backing off" 20% from max RPM you are forcing and over loading your engine and thus preventing your engine from hitting max RPM by over propping it. There is a big difference from being able to turn max RPM and then backing off by 20% for cruise RPM vs. not allowing your engine to hit max RPM by forcing too much pitch on it for a 20% reduction in available RPM.