I am building a 320 big bore stroker for my 04' Rmz 250 to run in the vet class. I am running an Athena 290 kit with a 59mm stroker and a WMR ported head with all their goodies on it. (guides, seats, coated Ti valves, coated buckets, conical springs, etc.) I have FMF exhaust and the stock carb (for now may bore later). Can anyone tell me what i should do for jetting the stock carb for this monster??? Any ideas Eddie?
Also, has anyone got one of these kits or the 315 RPM kit? How will it do against the others running 450's?