86 250r jetting specs?

[WEATHERBY460]

Please help me get in the ballpark....I would love to know the stock jeting specs on the 86. Especially the air screw.

Also, if I have a big bore kit (310)...what are the usual changes in jetting that need to be done?

Also, i have a paul turner exhaust.....what are the usual changes for that too?

Currently it has
160main
48 pilot
1.75 air screw.

Thanks

[whyzee]

Please help me get in the ballpark....I would love to know the stock jeting specs on the 86. Especially the air screw.

Also, if I have a big bore kit (310)...what are the usual changes in jetting that need to be done?

Also, i have a paul turner exhaust.....what are the usual changes for that too?

Currently it has
160main
48 pilot
1.75 air screw.

Thanks

MAIN jet 145
PILOT 42
JET NEEDLE 3'RD GRROVE DOWN FROM THE TOP
AIR SCREW 2 1/4 TURNS OUT FROM FULLY IN.

ONLY SCREW IT IN LIGHTLY OR YOU WILL STRIP IT !!!!

[WEATHERBY460]

mine sounds on the rich side...any opinions?

[whyzee]

mine sounds on the rich side...any opinions?

wHERE IS YOUR NEEDLE CLIP?
try 2 down from the top
and a 145 main.
what type of gas are you running, and what octane?
what mods do you have?