~28mm 250r atc carb in blaster

[jmtt90]

I recently picked up a free Mikuni atc 250r carb from a freind. It seems like the intake bore is around 28 mm, i checked all around the carb for some type of model # but could not find much. The blaster currently has fmf full pipe, boyesen reeds, and k&n without lid. I was wonder if anyone could give me some ballpark jetting numbers at sea level.

 

[cirame1]

start about 250 and go up to maybe 270 or 280 and see how it rides.. but start about 250. cheack plug after short use and see if its black. if so, to rich.

 

[blaster biotch]

i always start big and work my way down. i say start at 300 drop to 290 and keep goin down till u find the best power and not too lean. i bet u end up with a 280

 

[jmtt90]

hrmm anyone know where i could buy some jets for this antique?