300/440/550 750 sbn44 jetting

tnj4life · Feb 4, 2009

I finally got around to upgrading to a single sbn44 on my 440/750 conversion ski. Question is what is the jetting for this motor? The 750 motor is bone stock. Dont know whats in it right now and im not even close to the carb. Anyone have a ballpark figure? Which popoff spring and needle/seat?

Maxumflux · Feb 7, 2009

kind of irrelevent but did you just tear down a couch and use the couche's electric box and engine?

tnj4life · Feb 8, 2009

Well, I tore down a junky 750sx and decided to throw it in my 440 hull. Any 750 out of a kawi will work. You need an adapter plate and some other things. Yeah, you either need to mount the 750 electric box in there or cramm the 750 electrics in your 440/550 box. Fun flatwater ski. PWCtoday has TONS of info on this in the oldsckool section if searched for.

sflsurfrider · Feb 8, 2009

im running my 48 (modified from stock 44) at 125, 135, and 32lbs popoff with a stock SJ f/a

tnj4life · Feb 9, 2009

Thanks! Is that a stock 750?

Maxumflux · Feb 10, 2009

so your doing flat water back flips with this beast?

tnj4life · Feb 14, 2009

xkawi550x said:
so your doing flat water back flips with this beast?

Nope, im not a very good rider.

Maxumflux · Feb 16, 2009

tnj4life said:
Nope, im not a very good rider.

lmao i've never even ridden a 550. a freind just gave one to me and i was like why not? so i modded the hell out of it. :barrel:

tnj4life · Feb 21, 2009

I have 115 pilot(low), 135 main, and not sure on popoff, I need a gauge. Im gonna try it and see how it runs so maybe I can dial it in.