Freestyle 760 44mm carb jetting driving me nuts

[bikerdave52]

Ok so I spent two days digging through the site and found two things out.....one that carb tuning makes you wana burn ur ski and two everyone is all over the place haha.... Running a 64u 760 with b pipe and nynja chamber...stock 44s stock reeds stock intake...msd....stock airbox...aftermarket waterbox dual cooling and single pulse equal y to both carbs. Have a 115 pilot 140 main 2.0 n/s and 65 spring...after many many attempts I stopped at 2 turns on the low and 3/4 on the high it still seems to hesitate at 1/4 throttle but u get above that it screams then I pull the plug and it's soaked but I go lower with the low and it takes longer ad longer to catch up...so up with the low down with the main?

 

[jetx]

I just setup a buddies ski with similar setup and I used stick jetting for the 760 motor

115 pilot
135 main
1.5 Ns with 115 g spring
1 3/4 ls
1/2 hs

I think your main problem with what your currently running is your pop off is too low especially when using the stock
Airbox.

 

[kevbo]

The bottom screw is for idle only, set it on the trailer. Pilots are 1/4 throttle. Main jet and top screw control full throttle fuel flow. Raise the pilots to 120, tune the top screw for hardest acceleration. I expect the top screw to end up less than 1 turn out with 140 mains. I would use an 80g spring.