Fuel Economy on 250 suzuki's vs yamaha 4 strokes

[Tem120]

I'm looking ot put a couple of engines on my 3440 proline , and I'm looking ot know which of these engines is more economical and around howmany GPH would twins of these be dooing in comperable boats if at all possible , thank you

[olmo40]

I think the fuel flow meter is only relatively new for Suzuki???.I could be wrong ,After 80hrs on a 30ft Cat with twin 250 dfs from cruising to WOT runs i have averaged 9ghp,which i think i V good ,im not a real fuel economy type .I hope someone responds a bit more accurately so i can see the figures as well.

[playin boats]

on the 200 's the gears are 2.29 to 1, they turn a 16" dia prop, my experience the Suz will run about 500 rpms less than the Yammi at cruising speed, about 10 to 15 percent better fuel burn.
Ken

[Tem120]

thanks , does anyone have GPH numbers on the Yamahas? oh know of a site that could help me out with this question?

[Buckman_4]

Tem check out yamahas site they have performance bulletins there, it may be they have one of your model of boat or at leest something close
http://www.yamaha-motor.com/outboard.../perfbull.aspx
there i edited it to add the link to the performance reports