I need more RPMs

[496 Cubic Inches]

I have a 2006 Yamaha F150 on my boat. After the proper break in,I ran it up to WOT a couple times and found I was barely getting into the RPM range Yamaha reccomends.I got to 5K and they specify 5-6000. <br /><br />At the time I picked up my boat the dealer didn't have the right SS prop for my motor so I started off with a 14x19 Yamaha aluminum model. <br /><br />I went to the dealer and picked up the SS prop they reccomended for my boat. It ends up being a Yamaha Saltwater Series 15 1/4x17.<br /><br />In theory I should gain about 400 RPMs by going to a 17" pitch,but now I've read that SS lowers RPM by about 150-200. <br /><br />Is the smaller SS prop going to be any better than the larger Aluminum?<br /><br />In the end I'd like to get to at least 5500 RPMs,if not more.

 

[Ron G]

Re: I need more RPMs

Put the ss 17 pitch on and see what the numbers are first.then you can by that.