re powering more hp or less?

[litwor]

thinking of a new 225 hp to replace my 91 johnson , it's on a 92 mako 211. all the info on 2 strokes says to run wot , this is hard on rough ,choppy bays, would a 150 ran harder carbon up less with the new fuels ? the weight of the 4 strokes is high over 200 hp , 590 lbs +. I seem to rtun at 3500 rpm most of the time .any imput?

 

[tashasdaddy]

Re: re powering more hp or less?

two strokes run fine at lower rpms, they just need to be propped so that the run at a certain rpm at wide open throttle. this is how the determine the right prop for the hull. this is done so you don't lug or over rev the engine. if you run seafoam in your fuel as you should with a built in tank, you will be fine with a properly propped 225.

 

[litwor]

Re: re powering more hp or less?

at wot im pushing 5500rpm's , I just seafoamed with the 3/4 gallon of gas method and she runs fine . The only reason I'm thinking of a new engine is bottom right cyl is 70 and all the rest are 85. I'm gonna try spray sea foam in that carb direct next trip . The 3/4 gal only lasted about ten minutes at 2500 rpm so I could only do it once . Thanks for your imput .