[turnchaser]

1987 TRX250R. Stock carb. I just bought it and it is way rich. I want to redo the carb completley. FMF full exhaust and a boysen rad valve, otherwise it is stock(Thats what I was told). Freshly rebuilt with stock size cylinder.

Mixture ratio and fuel: 32:1 93 pump fuel and amsoil dominator oil.

Keihlin Carb PJ standard bore

Main Jet size: Have not been inside yet.

Slow (pilot) Jet size:Have not been inside yet.

AirScrew (number of turns out):Have not been inside yet.

Needle (what groove is the clip in, Brand, etc):Have not been inside yet.

Reed brand and type:Boysen Rad valve

Airbox: no lid on airbox

Pipe: fmf full system

Engine Displacement: standard 250cc

Compression ratio: stock

Porting type:stock

Altitude: where you normally ride 500-1500feet.

I just want to know what to order for now. I read that OEM jets are best, better build quality. Is this accurate?


Does the rad valve affect jetting?? I cannot find an answer to this!