jetting ballpark: 61x, mik 44, 84mm jugs

[Idok]

anyone?


this is a stock 61x motor bored to 84mm with a mikuni 44....B mod chamber,180psi and stock F/A



I know with a std. bore it'd be roughly 140H/120L




how bout with the bigger pistons???

 

[SUPERTUNE]

Use a 2.0 needle valve w/95 gram spring with those jets...

 

[butti]

thanks chuckie,this is actually my motor scott is asking about.i rode it today with a 2.5n/s 120p and145 main(first time in the water,wanted to make sure i didnt start too lean)and it ran great! very snappy! a little bit lightswitchy though.i will try the 2.0n/s and 140main ,that may improve that a bit.

 

[SUPERTUNE]

If it ran pretty good with the 2.5, when you go to the 2.0 use a 80 gram spring...in a Superjet right?

 

[butti]

thanks again! i thought it ran pretty good before...oh boy! i set it up as you suggested and it really rips now!

 

[Idok]

post up the final setup with jet spex and it can go in the jetting library