I have a 92 lt250r. It is bored .030 over has an fmf fatty pipe, and powercore silencer, v-force delta 2 reeds, k&n air filter with lid off, and wiseco pro-lite piston. Now i am putting a 36mm Keihin PJ carb on it. The only problem is that it didn't come with a main jet and i have no idea what size i should start with. Any help would be greatly appreciated.

 

150-160

 

92's are different. My stock jet was a 260. A 150 or 160, will probably burn in to the ground.

 

Kracker
92 aren't different(well they are but in this case it doesnt apply), Its the Keihin that is different. Read the parts that he has.

 

OOPS!

 

155 - 160 i ran a 155 in my 1991 when I had it and that was perfect, almost all the same mods.

chuck

 

thanks to all, the help is greatly appreciated

 

You can get the jets in a 5 pack for the Keihin's. It's cold outside right now and i would start a little rich and come back down. Not worth risking a scored piston.