by KRCRFs » Fri Sep 23, 2005 7:37 pm
Mike,
Most bikes made in Japan come jetted for sea level. However it still might be lean, especially if you start shoving more air through it.
I'm not sure what the 150 runs, but my guess is that the stock pilot will be fine, you can just drop the clip one position on the needle, and buy a main jet 2 to 3 sizes larger.
They might make a JD Jet Kit for your sons bike, but it probably wouldn't be worth it for a 150. Look at my signature. It has all the stuff we did to my wife's 230.
Kim
Kim's: 04 250X
13/51 with +11
Main Jet: 138
Air Screw: 2.5 Turns
Kathy's: 04 230F
13/48 sprockets
Main Jet: 132
Air Screw: 1.5 Turns
Common:
Pilot Jets: 42
Stock Needles: 4th Pos
No Screens or Baffles
Open Air Boxes, Twin Air Filters