02 cr250r jetting

[davisracing]

i have an 02 cr250 with an fmf fatty, shorty silencer, milled head, the air box is opened up and a brand new wiseco piston and was wondering what the jetting should be elevation 1,000 the jetting is stock right now thanks for any help

 

[bedell99]

My advice is keep it stock. Maybe bump up the main depending how hard you twist the throttle.

Erik

 

[davisracing]

i've also been hearing about the s-8 nozzle would that be something i should get and does anyone have the part #
thanx

 

[bedell99]

I did that on my bike and it did work better. Here is the part number.

yamaha#3TC-14141-S8.

Erik

 

[cjmx]

Not sure what the honda part number is but I purchased it at my local dealer for $12. Yamaha dealer wanted $20 for it. I'll check if I still have the receipt and if so post the part number later.