Quote:
Originally Posted by THEFERMANATOR
Not gonna happen. That engine should burn about 12 gallons per hour at a 3800 RPM cruise I would guess which on a V should have you running about 30-35 roughly. So 2.5-3 MPG is about the best you will probably ever see from it, but 2-2.5 MPG is much more realistic for a 2 stroke carbed outboard. It's hard to beat an I/O for fuel milage unless you've got a 4 stroke outboard. On the bright side though them old YAMAHA's tend to run forever with virtually no maintence except for the shift rods(which is easily fixable).
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I know 4 strokes get better economy than 2 strokes, but never having owned a large 2 stroke I wasn't sure of how great a difference to expect. Hearing that I'd get up to 8mpg had me going though!
The motor is on a 21' center console I just picked up. I'll run it on that boat and see what kind of mileage it gets. It will have to be an impressive ride in order to get me to swap my 3.7 I/O to an outboard though.