87 Baja 240 sport Prop question.
03-20-2018 | 09:11 PM
#1
Thread Starter
Registered
Joined: Jun 2016
Posts: 4
Likes: 0
From: Eastpointe, MI
87 Baja 240 sport Prop question.
I have an 87 240 sport, with a 496 stroker putting down about 550hp. I’m swapping the alpha for a bravo 1, but I got a smokin deal on a 1.36 gear ratio. Does anyone know what prop I should start with?
03-20-2018 | 10:13 PM
#2
Registered
Joined: Feb 2012
Posts: 643
Likes: 7
From: Chesapeake Bay
23mirage 3 blade. Or a 22p bravo 4 blade. Depending on what rpm you’re looking to turn. Being that far in the basement with the propshaft the 3 blade will be the faster prop and 4 blade will cruise better but could porpoise.
03-21-2018 | 01:10 AM
#3
Charter Member # 55
Joined: Oct 2000
Posts: 20,232
Likes: 2,482
From: Omaha/LOTO
/\/\/\/\/\/\/\/\/\ What he said
I could spin a 23 Mirage + to 5450 with about 420hp on my 93 24 Outlaw with a 1.5.
With your additional HP, you should be close to the right WOT rpm with the 1.36.
I could spin a 23 Mirage + to 5450 with about 420hp on my 93 24 Outlaw with a 1.5.
With your additional HP, you should be close to the right WOT rpm with the 1.36.
03-25-2018 | 05:36 PM
#6
Registered
Joined: Oct 2016
Posts: 553
Likes: 1
From: Buffalo, NY
03-27-2018 | 01:45 PM
#7
Offshoreonly Advertiser
Joined: Jun 2003
Posts: 3,878
Likes: 47
From: Princeton, Wisconsin
Our 23 OB/FX 4 blade would be a good candidate. These props have a ton of bow lift built into them.
Get a baseline with whatever prop you can find and post the results and we can go from there.
1.36 gears from 1.50 gears require down sizing about 2 inches of pitch.
Brett
Get a baseline with whatever prop you can find and post the results and we can go from there.
1.36 gears from 1.50 gears require down sizing about 2 inches of pitch.
Brett
__________________
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
04-01-2018 | 08:45 PM
#9
Registered
Joined: Jun 2011
Posts: 1,208
Likes: 141
I would add a 21 or 23" Rev 4 in the mix as well. Due to the larger blade area a 21" Rev 4 will load the motor like a 23" Mirage. A 23" Rev 4 will load the motor like a 25" Mirage etc. Slip, trim and handling characteristics will be much different between the two styles.
