I was reading the reviews on the Evinrude G2 and when looking ove the boat peformance tests I noticed some odd results. The 250 H.O. and 300 HP G2 were tested on the same boat. A Scout 255 LXF . The 250 H.O. G2 was tested in 2014 and the 300 was tested in 2015 a year later. The same boat with similar loading and the 300HP motor used less fuel at every RPM and speed. Significantly less I would say better than 10%.from idle up to nearly wide open. Can anyone tell me how the more powerful engine would be more efficent? Was there a cange to the fuel managment software over the course of the year to make the 300 burn less fuel? Curious because I have a similar boat and thought the standard 250 would be enough motor and get the best fuel economy........thanks for any facts on the performance tests.
03-28-2016 08:07 - edited 03-28-2016 08:08
Most of the time, a larger motor can loaf along where as a less powerful motor must struggle constantly to keep up with the larger one. More throttle opening means more fuel consumed.
I had twin 250s on my 31 Ocean Master and she is a heavy boat.I weent to twin 300s and got a LOT better fuel economy.I got a 1/2 more mile a gllon.I went from 1 Mpg to 1.5 Mpg, I had to run my 250s at 4000 Rpm to go 30 Mph,I run my 300s at 3500 Rpm and ge 30 MPH.