Re: 1954 Evinrude 7.5hp increase power?

[bill-bate]

Your 1954 Fleetwin doesnt use modern roller bearings in the powerhead like newer outboards. It is critical that you stick to 16-1 mix. I use 16-1 on all my older motors and none of them smoke much using Mercury premium plus oil. As for a prop. I would use one off of a 5.5hp Fisherman . It has less pitch and will help the motor rev up with a heavier load. Plus it should be easy to find one pretty cheap… As far as elevating the height of the motor. I doubt it will make much of a difference at the speeds the 7.5 is capable of on your boat.