jetting A PWK for a 2002 CR250

Discussion in '2-Stroke Discussion' started by rcpilot_971, Oct 12, 2005.

  1. rcpilot_971

    rcpilot_971 Rookie DRN Member

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    I have a 2002 CR250 with a FMF fatty and v force reeds other than that its stock stock I run vp 110 at 40:1 at about 400ft ELV dose any one know where a good starting point would be for getting this thing jetted




    Thanks Tim
  2. soulmate33

    soulmate33 Lifetime Sponsor

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    My '02 CR250 has:

    My 38mm PWK has a 48 pilot and 180 main.
    I'm at sea level here in Hawaii. At 2.75 turns out it is still a little rich.

    I'm gonna drop to a 45 pilot and 175 main. Stock needle (for a 2000 CR250).
  3. rcpilot_971

    rcpilot_971 Rookie DRN Member

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    is it rich through out or just on the top end
  4. soulmate33

    soulmate33 Lifetime Sponsor

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    Both....I actually don't mind running it slightly richer, the motor runs cooler and hopefully won't have to worry about seizing the motor leaning out.I'm still running the same plug from last year.knock, knock on wood......
  5. D36-108A

    D36-108A Subscriber

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    175 main, 45 pilot, DGK needle with its clip in the middle position, adjust airscrew to suit. BraaaaaaAAAAAP! Crisp, clean-running power from just above seal level to above 5,000 feet. Pump gas isn't a problem but I prefer to run race gas, and I put many hours on a single plug. Easy starting, never fouled a plug, blah blah, rave, rave.
  6. t300

    t300 Rookie DRN Member

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    2004 cr250 jetting

    2004 cr250r other mods, fmf fatty , fmf q-stealth, v-force 3, boysen exaust flange, keihn pwk 38mm of of a 05 yz250

    stock cylinder pwk conversion
    pilot - 42
    needle - cej 3rd
    main - 175

    now running

    terry varner modified cylinder and head
    pilot - 40
    needle - cej 3rd
    main - 175
    110 leaded race gas 50/50 with 92 premium gas
    bike is a rocket.....
  7. CR3999

    CR3999 Rookie DRN Member

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    JD jetting has or did have some nice needles with there jetting kits that are sweet. Try jdjetting.com .



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