Actual 250 HPDI Performance Numbers

[zup]

Just got the boat back and figured i would post the performance numbers since you all helped me make my decision. I origionaly had a 225 Honda and was less than excited about its performance. This is on a late model 23sc.

250 HPDI
Prop 19x15 Yamaha Saltwater Series
Cruise 3300 RPM, 30 MPH, 8.2 GPH
WOT 5100 RPM, 48 MPH, 20.7 GPH

[Ed]

ZUP-

You sure you have the right prop on that engine? Seems like your RPMS at WOT are very low.

-Ed-

[SEAFARI]

Zup,
You should have a 17" SWS, Your motor
will last alot longer.

Chris

[zup]

Thanks for the advise.

The recommended range is 4500 to 5500. The engine makes max HP at 5000. I like to prop my boat just a few RPM higher than the Max hp otherwise I find that the few extra RPM's result in more fuel burn and very little additional speed as a result of a drop off in the torque curve. I have had good lock proping motors accordingly. I have a 2200v pathfinder with a 225 Yamaha OX66 I have i propped for a WOT RPM of 5200. (it is 4500-5500 as well) I have 900 and some odd hours without a glitch.

I am thinking about going with the 17, I just want to how she runs once she is broken in and fully loaded up. I will let you know.

Thanks

[Briguy]

Zup,

Nice numbers. You may also pick up some RPM's by adjusting the motor up a hole or 2. As for wot, 5100 ain't bad, the motor is rated to turn 5500 max. Dropping to a 17 will slow your cruise by 3 or so knots. If the motor "feels" right, stick with it. If it comes out of the hole like a 3 legged basset hound, then change it.