what size jet

[user101]

well i tried to do a search but i was unsuccesful..anyways i bought Rico old Bills Thunder and i need to know wut size jet..im at about 500ft. above sea level. should i move then needle clip any?

[cals400ex]

i would start off with a 155 keihin mainjet.

[user101]

ok..any other suggestions

[user101]

bump

[cals400ex]

like i mentioned, if this is your only mod, i would try a 152-155 keihin mainjet. i assume your running the air box lid on?? if this is the case i would leave the needle clip on the stock position and you could possibly run a 40 or 42 pilot jet for better starting.