Cutting through all of the BS, mine included, this is what I would recommend as a max continuous cruising rpm for that engine:
The OP's engine produces 300 hp from 6 liters at 2,500 rpm. Using the 35 hp per liter rule of thumb for decent engine life, that is 210 hp. That engine should be making about 210 hp at 2,200 rpm if propped to reach 2,500 at wot.
So, 2,200 would be my recommended max cruising rpm. But since it is a planning hull be aware of my comments about cruising near the hump.
David
The OP's engine produces 300 hp from 6 liters at 2,500 rpm. Using the 35 hp per liter rule of thumb for decent engine life, that is 210 hp. That engine should be making about 210 hp at 2,200 rpm if propped to reach 2,500 at wot.
So, 2,200 would be my recommended max cruising rpm. But since it is a planning hull be aware of my comments about cruising near the hump.
David
