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Thread: Keihin 34mm PJ

  1. #1
    Dustin87R is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    May 2007
    Location
    Maysville, Georgia
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    192

    Keihin 34mm PJ

    Anyone running a 34mm oval slide PJ on their first gen T3? I picked up an 85 with that carb on it and I'm looking for suggestions on where to start with jetting. It's stock except for a Uni filter and the silencer. The 34mm ships with a 152 main and 55 pilot jet but the previous owner replaced them with the largest available and then drilled them out before realizing the intake boot was trash.

  2. #2
    Join Date
    Nov 2006
    Location
    southern oregon
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    2,338
    I would start at 160 and creep down as needed.
    2-stroke lover

  3. #3
    Dustin87R is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    May 2007
    Location
    Maysville, Georgia
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    192
    Thanks for the reply! That gives me an idea of what jets to order.

  4. #4
    Join Date
    Sep 2005
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    MICHIGAN
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    2,027
    Here is some pages of Keihin carbs jetting specs people used on their TRX250R
    http://www.trx250r.net/forum/intake-...-database.html

    They say they run like 42-55 pilot and around 152-162 main jet. 3rd or fourth clip position.

    I typically try to jet the mid range rich for recreation trail riding, but that's just me.
    86 T3
    84 T3
    86 KX250

  5. #5
    Dustin87R is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    May 2007
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    Maysville, Georgia
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    192
    Thanks for the info! I've got some jets and an intake boot headed my way.

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