nshaver2
08-05-2006, 02:45 PM
I have a 1971 80hp Merc outboard. I have very poor acceleration out of the hole. I just put a tachometer on the boat so I can fiddle around with the prop and make sure to not over-rev the engine. What RPM should I aim for with this engine in WOT? The engine is mounted on a 16' tri-hull boat if that helps. I think the diameter is a little large for this engine, which is why i got the tach so I could prop to a certain RPM. I also would appricate input on what pitch migyht work best. Right now I have a 13.75"X15" prop. Thanks.