I have a 1986 Bayliner 16.5' with a 1986 Force 85 HP engine. Prop is 13.5" 17 Pitch. My top speed at WOT is about 25 MPH and pushing 5-5200 RPM. This seems slow to me. Shouldn't it be up in the 30-35 MPH range? I can push up to 6000 RPM but not much more speed and that many RPM is in the danger zone.
The speedo is a brand new gauge. And I got the same result with different load capacities in the boat.
Any help would be great.