1988 V20 with 225 Honda

[Airslot]

Jackman, I'm at a loss, it just doesn't make sense. I trust your Speed numbers are GPS? 5400 RPM's spinning a 17" pitch prop through the 1.86 : 1 gears gives that 41 mph number on my boat. I still stand by what I said earlier, that motor should be able to spin 21p easy. The only other thing that I can think of is the throttle hitting the dash. I have a local buddy with a 150 honda on his V-20 fisherman and he's turning a 17'p ss prop to 6100 rpm. The Honda's are great motors, no doubt. As for your 2.5 MPG number, thats not bad at WOT for a 225. What does she cruise at? Got any numbers around 4000 rpm's?

Airslot