hawg Posted February 14, 2016 Report Share Posted February 14, 2016 Are any of you guys running a Yamaha F300 on a 23 DV? I'm curious about the fuel burn numbers and performance you are getting. I'm thinking of replacing a 300 HPDI but I could use some justification. Thanks. Link to comment Share on other sites More sharing options...
MWoods Posted February 15, 2016 Report Share Posted February 15, 2016 I have that combo. Have seen a bunch of repowers to the F300. There is a perfect balance with the weight. I have the 110 gal fuel tank, and usually run light. I run the Yamaha SWS-II 19 pitch 3 blade prop with the SDS hub. Best WOT was 55mph, trimmed out, at 6000 rpm with 93 Octane. I lose two mph with 90, and three mph with 89 octane.. I wrote down the numbers a couple years back. This was light fuel,2 men,snokeling gear only. Light chop and no wind.. Optimal conditions 3200 is 27 MPH at 4.0 mpg Best cruise 3500 is 30 MPH at 3.7 mpg 4000 is 35 MPH at 3.1 mpg 5000 is 45 MPH at 2.5 mpg Dunno what I burn at WOT. Can't look down at the little numbers. I ran a 21 pitch SWS-II but could not spin it up past 5500. Numbers were square, but I didn't want to lug the motor.. It is a great choice for repower. I don't know the price difference in the 250's. The motors are the same, just the ECU is different.. I had an F250 on a previous DV and it performed very well and didn't burn much more gas.. Marc. Link to comment Share on other sites More sharing options...
hawg Posted February 15, 2016 Author Report Share Posted February 15, 2016 Thanks for the info. Now you've really got me thinking. Link to comment Share on other sites More sharing options...
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