2510 prop question

[pparke]

I am trying to find out if the factory 17 3 blade black prop on my F225 2510 MV is the best prop for the boat. I have read a lot of info on other boats , the 2520 Dv and others but not much on the 2510 MV bracket mount. I am looking for economy first as I usually am underloaded, and like to go to Norfolk serveral times a year from Solomons. I dont have a flow meter so i really dont know what my mpg are. Any ideas would be great. Thanks

 

[susqking]

I have the same boat engine combo. I have the 15 1/4 x 17 Stainless prop, I believe it's the best prop. I have a 15 1/4 x 15 that I tried and it's to small, you can get 6200 from it.

4200 RPMs=25 mph=9 gph
WOT 5800-5900 38-40mph depending on load.

 

[captbone]

Anyone have a 3.0 Liter 225hp Optimax on a 2510? The prop size and WOT RPM would be very helpful to me as well. Thanks

 

[JWL]

First, determine the WOT throttle rpm as outlined in your engine's owner manual. Then run your boat with a full load, at full throttle, and engine trimmed out. If you can notreach max rpm, then you are probably over pitched. For example, my engine operating range is 5,600 -6,000 rpm WOT. I could barely reach 5,600 with the orginal prop. I reduced pitch by 2 inches resulting in a 400 rpm increase at WOT. Now, with a light load of gear and fuel I can easily exceed 6,000 rpm. I just throttle back so I don't do so.

Remember, in cold weather you will produce more rpm than when it is the middle of summer so rpm's will vary during the year.