jetting help

[muddzilla94]

need some tips for jettingi have a race saturday, i have a 04 450 with a sparks mx cam, porting, full system exhaust, and airbox lid off at 2500ft above sea level

[muddzilla94]

anybody?

[Scro]

50 pilot, 180 main, clip one position down from center and 2.5 turns out on the fuel screw would be a good starting point.

[muddzilla94]

i have a 180 main and a 50 pilot but stock needle with 2 turns out on a/f screw and its running like its flooding out around 1/4 throttle.

[DnB_racing]

Pilot jet: Controls 0 to 1/4 throttle. If your engine cuts out or pops when you rev it up then you need to make this richer (higher number) if it bogs like a false rev limit when you rev it up you need to make this leaner (lower number).

[muddzilla94]

i meant to say it sounds like its bogging, ill put up a vid and show you all what its doing.

[DnB_racing]

check through this link it should help with pilot and a/f adjustment


http://www.exriders.com/vbb/showthread.php?s=&threadid=229923

[muddzilla94]

thanks i got it lined out with the a/f screw.