Bottom - I switched from 150 to 200 on two separate boats and found the differential very significant in these areas:
1. lift onto plane
2. hold plane at lower speed
3. top end
Top end differential was approx. 10 mph in both cases.
So, if your 140 may be producing approx 10 % low, and you switch to a 150 that produces approx. 10% more, affect would be significant.
There seem to be good volume of solid, used Evinrude 150 loopers for low cost, maybe you can wind up selling yours, and getting 150 for low total dollars
|