totto

Just got a Stinger 312 without props. Bravo1 drives. Problems is that i have no idea of engine hp. All i know is that engines were rebuilt 2007 with: 4-bolted blocks, speed-PRO pistons, forged crank, holley intake, qft 750 carbs, without circ-pump (crossover), imco powerflow exhaust , MSD ignition.

Any suggestion what props to start with?????? 3 or 4 blade?
(left drive has counter clockwise rotation and right drive clockwise)

bbladesprops

Let's try both.
Call us about our prop test program.

Brett

737jetmech

iTrader: (1)

23 mirage 3 blade ... 24 bravo 1 4 blade will be close. Any chance on contacting the previous owner to find out what he was running ?

totto

Actually I just got in touch with previous owner, but he just had the boat for a couple of months. He used 23p 3-blade, but couldn't try WOT because then the engines overrevved. He didn't go hugger than 5500 rpm since he didn't know any more than me about the engine specs. It would for example be very interresting to know what cams are used.

Props are marked: QuickSilver 48 13704 A40 23p. Looks like Mirages, but no "mirage"-marking on them. There are another stamped marking saying: "65000 MP". But no idea what that means...

bbladesprops

The QS number you mentioned is the Mirage propeller pre the Mirage name. It has the same geometry as a Mirage "non" plus.

Loks like you'll need to go to the 25 P line.

Brett

totto

Thanks for info, Brett. Since I'm mainly looking for cruise efficiancy and also easy getting on plane, 24p bravo 4-blade might be the way to go? I'm just afraid that I'll loose to much bowlift. Or is the Rev-4 better? Also dont want to spin the prop inwards since many people says it gives poor handling. Is it worth labbing them for more bowlift? Reduce area and/or add cup??