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Thread: 87 250R tuning

  1. 11-18-2008, 09:40 PM #1
    VABCH350X
    VABCH350X is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    87 250R tuning

    Hey guys, my buddy got a great deal on a fairly original 87 R, and I'm trying to help him out a little. X.System was awesome pointing me in the right direction, and I was lucky enough to have a case of jets to experiment with.

    The bike runs best with a #142, with the clip 1 noth lean from center. Plug chop comes up tan and dry. While the bike runs well, it hesitates to wind out all the way in 1st gear, and sometimes in 2nd. Third gear and after, its a rocket, and will take WOT through 6th.

    I'm hesitant to go leaner on the main jet since I'm already smaller than factory and the plug looks good. Location is Northwest Washington close to sea level. He's running 93 octane with 40:1 synthetic. Any advice apreciated gents.
    -Paul
    86 Honda ATC350X
    86 Honda TRX70
    02 Honda TRX400EX
    03 Kawasaki KFX80
    82 Honda CB900F
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  2. 11-18-2008, 11:40 PM #2
    BigGreenMachine's Avatar
    BigGreenMachine
    BigGreenMachine is offline Power User The day begins with 3WW
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    It sounds like your pilot and maybe your needle are giving you the trouble.

    Someone with some more experience hopefully will be along shortly. lol

    If this link brings you to the page I'm looking at then its some great reading for you about jetting, even if he is using his KDX as a model.

    http://justkdx.dirtrider.net/carbtuning.html
    My Feedback 85 TECATE 500 08 Honda 450R
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