Need Honda Repower Prop Advice

[cp]

I'm planning to upgrade from an old BF130 to a newer BF150 and am wondering what size/pitch prop I will need for the new higher HP motor. The prop on the old 130 HP motor is an aluminum 13.75"x13p 3-blade and is sufficient to attain WOT 5700 RPM, well within Honda's specified 5000-6000 WOT RPM. I will be keeping the same boat, just putting the newer 20-HP higher motor on it.

So, if any of you out there have upgraded from a BF130 to a BF150 ON THE SAME BOAT, please tell me what prop you had on the BF130 and what prop you now have on the BF150 and what WOT RPM each attained. Please be specific regarding material, diameter, pitch, and blades.

Any info from other repower increases on the same boat, like from a BF115 to a BF135 will also be helpful. I just want an idea of what prop change is necessitated by a 20-HP increase. I can guess-timate the RPM change from a diameter or pitch change once I get in the ballpark using any info from similar 20-HP upgrades on the same boat. I emphasize "on the same boat" because comparisons between boats with different hulls are not valid for my purpose.

Any input will be appreciated!

 

[Sea Rider]

Re: Need Honda Repower Prop Advice

Is the new engine comming with a standard factory prop, or you must pick one at your sole election ? If standard factory propped, make a wot test and check max rpm's achieved, then play with pitch if opting for more rpm.

Happy Boating

 

[Bondo]

Re: Need Honda Repower Prop Advice

Ayuh,... What's with the 2 threads about the Same issue,..??

 

[cp]

Re: Need Honda Repower Prop Advice

Bond-o - I started this thread in the Honda outboard forum because I was only thinking Honda motors since I'm replacing one Honda with another. After a couple days with no replies, I realized that even though both the motors will be Hondas what I was really asking about was propellors, so I asked the question in the Prop forum. Guess the moderators realized the same thing and moved this thread from the Honda forum to the Prop forum, so now it looks like I started duplicate threads in the same forum. Sorry about that.