Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Fuel economy on 1989 sport 15
Posted by garrett007 on 02/27/09 - 2:53 AM
#1
I am thinking of replacing my Evinrude 1990 48 SPL with a rebuilt 1990 Johnson 70. This is on a 1989 Sport 15. Both of these are 2 stroke. Does anyone know what kind of fuel economy I can expect with this 70 hp assuming standard configuration. I currently get on average about 5-7 miles per gallon, depending on load with the 48.
Thanks
Gary
Posted by ioptfm on 02/27/09 - 10:35 AM
#2
It of course will depend on your running habits, but actually you may get a little better with the larger motor in that you will be a half throttle most of the time instead of full throttle with the smaller motor
Posted by MW on 02/27/09 - 1:54 PM
#3
I had that engine on my sport 15 '87 48 spl, I loved that motor, I would have bought another one if I could have. No power tilt, no oil injection, nothing to break. Just a good, well running "No-frill's" 50 hp motor ! I got rid of it a few years ago due to it's age, it was still running, they tell me it's still running now, 22 years later.
Posted by DesertSport on 03/01/09 - 6:17 PM
#4
I have a 1975 50 on my 76 Sport. It is very fuel miserly but barely adequate on power.
I did bolt on a 1989 60 (triple) for a brief time (it blew a cyl.) and WHAT a difference. Power galore and about the same fuel economy.
A good day (6-7) hours of running) would use about six gallons. Granted, I don't run WOT a lot. Mostly 3/4 throttle (4000 RPM).
The OMC triples (50-60-70) are pretty fuel efficient if you stay out of the throttle.