main jets

[luckyeddie]

can anyone tell me what main jets to run, running flat slides with pressurised airbox no it wont be exact but just to get me somewhere near thanks

[motoxxx]

im using 118 at the moment with no airbox and a air tray installed.

havent had it dynod yet but it seems to rev clean and run well.

[jamkwak]

I'm running #128 with thicker needles not dyno needles, no airbox.... sp engine skimmed head, ported and gas flowed, stainless valves.
It pulls right through the rev range..no flat spots, and 75bhp

[luckyeddie]

thanks its already got 130s in so i might be in the right area
just to save me abit of time setting up cheers.

[neil_cb125t]

my 444 is running 115's go round the 118 or 120 mark for a 400cc ( 444 has more draw on carbs and amount of mix _)