bravo 2 prop

[hudman]

upgraded my old motor with new one, gaining about 110 hp. was running a 17 p 3 blad alum prop, what should i put on it now? looking at 4 blade SS, what pitch would be a good place to start? cant really go by what old motor did, it was tired

 

[Dhadley]

Re: bravo 2 prop

Need more info. What was the old motor? What rpm was it turning? What's the new motor? If youre going to a 4 blade, a jackplate is a good idea. Which do you have? A manual or hydraulic? What kind of boat?

 

[hudman]

Re: bravo 2 prop

this is on a 27 ft cruiser, my old motor was a 260 hp 350 cu in mercruiser, 2 bbl, bravo 2 , it was rated at 260 hp at the crank, 210 at the prop. it turned 4200 rpm with a 17p 18 in alum 3 blade prop. i think the old engine was tired. the new engine is a 383 cu in fuel injected motor, from mercruiser, 360 hp at the crank, 325 at the prop. i have had the old prop repaired, it had chunks out of 2 blades, and also bought a 18 in 18 p 4 blade stainless Steel prop... any opinions?

 

[TilliamWe]

Re: bravo 2 prop

This is a total guess, but if I had a 21 pitch 3 blade, I'd try it first.

 

[NeuGuy]

Re: bravo 2 prop

Really gonna need to know the recommended RPM. Is this a "crate" motor from Mercruiser? the new 6.2L?

 

[hudman]

Re: bravo 2 prop

the reccomended rpm on the new motor iw 5000-5300<br />its the new 383 crate motor from mercruiser, a bored an stroked 350 with fuel injection<br />smartcraft motor

 

[hudman]

Re: bravo 2 prop

guess you guys dont have a clue on the high end,,, if i buy a 40 hp evinrude, ill call you back<br />SEEEEEEEEEEEEEEE YAAAAAAAAAAAA