Ideas on a prop? SN SJ 760 swap

[TehXshizzit]

I just finished swapping a 760 in my SN superjet. I put a B pipe and aftermarket ignition. As you all probably know, the 760 is a mid-top end motor, but I was hoping to get a prop that would help on the low end while keeping my mid-top (impossible i'm sure). I am curious what pitch prop I should run, or any guidance in general would be nice.

I am not sure what a stock SN prop pitch is, but I also have a 13/18 sola supra sitting around as well. Not sure if that would be good though.

Thanks.

 

[Vortex]

The stock aluminum prop is the biggest p.o.s. garbage thing ever btw. Anything is better than that, a stock 08+ stainless prop for example is a popular choice as a low cost upgrade for 90-07. I have had good results with hooker 9/15 and solas Concord 14/18, but I am running a bit different set up than yours and there are a ton of variables at play when it comes to prop pitch.

 

[Quinc]

10/16 hooker or 08+ SJ impeller will get you a great bottom end and good amount of top end. If you are sticking with the 760 flywheel and stator checkout the zeeltronic thread to get even more low end.

 

[TehXshizzit]

10/16 hooker or 08+ SJ impeller will get you a great bottom end and good amount of top end. If you are sticking with the 760 flywheel and stator checkout the zeeltronic thread to get even more low end.

Thats my aftermarket ignition works GREAT!!!!!
just trying to squeeze a more low end out of this motor without having to port it since its the start of the season.

 

[Big Kahuna]

The Solas 13/18 is an I Series Prop. It is a good prop for what it is. Great on a race boat....... But not as good for strong low end. Is your cylinder ported? a 9/15 Hooker may be better than the 10/16 due to port timing of the 760 cylinder. This would let your RPM's spool up a bit faster. I had a 9/15 or 10/16 that I bought damaged, had to reweld the blades, had Dave at Impros pitch i to 9.5/15.5 for my setup. 83mm ported.

 

[Req]

I know @Big Kahuna and several others dislike the lag of the concord series of prop (bad if you blip a lot apparently) but they have a YQ-CD 9/15 that worked well for me with a 62t and I imagine would work well on higher port timing like the 64x as well.

Its a bit cheaper than the hooker and I think a bit lower pitch but as stated it has its cons for certain riders.

 

[Big Kahuna]

I know @Big Kahuna and several others dislike the lag of the concord series of prop (bad if you blip a lot apparently) but they have a YQ-CD 9/15 that worked well for me with a 62t and I imagine would work well on higher port timing like the 64x as well.

Its a bit cheaper than the hooker and I think a bit lower pitch but as stated it has its cons for certain riders.

Is that the big hub 9/15? I tried one a few years back. did not work for my set up. but there is more to pump tune than just the prop size.

 

[Req]

Is that the big hub 9/15? I tried one a few years back. did not work for my set up. but there is more to pump tune than just the prop size.

That is the big hub, yes. For me it worked, like I said however, I dont think I blip as much as most, or I compensated subconsciously for it.

 

[Quinc]

Also look into a blowsion pump cone and boring your nozzle?

 

[Big Kahuna]

There are many things that can make a pump setup differ from another. Bore, Pump Cone, prop spacing......... etc etc.