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Thread: Proper jetting for a piped 86 200x?

  1. 10-24-2010, 04:54 AM #1
    Cuztom Racing's Avatar
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    Proper jetting for a piped 86 200x?

    Hey guys I was wondering what the proper main jetting would be for my 86 200x with a full cobra exhaust. I think the stock main is 108 so maybe go to a 110 or 112? Also what type jets do the stock carbs take? Will the jets from my keihin FCR carbs work? Im away at work and havent had time to look for myself and would like to go ahead and order some main jets. Thanks
    Coal Shed Racing
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  2. 10-24-2010, 02:46 PM #2
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    Aka_am
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    the X uses Keihin round style's? I have a 122 or a 125 main in my bike and it's stock. like this Keihin Main

    I'd bump it up 2 sizes but that might be a tad much.
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  3. 10-25-2010, 06:01 AM #3
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    Thanks for the info buddy that's what I needed to know. Those are the same jets I use in my FCR carbs.
    Coal Shed Racing
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  4. 10-25-2010, 06:10 AM #4
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    But 108 is stock right??
    Coal Shed Racing
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  5. 10-25-2010, 07:22 PM #5
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    Does ANYONE know the stock size main jet for a 86 200x ive searched google for a hour without any luck and need to get jets ordered today...
    Coal Shed Racing
    Beasley's ATV Services
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    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110
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  6. 10-25-2010, 07:53 PM #6
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    Quote Originally Posted by Cuztom Racing View Post
    But 108 is stock right??
    I think its a 108, but not completely sure.
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  7. 10-25-2010, 08:16 PM #7
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    http://www.oscarmayer.net/atc/manual...ice_Manual.pdf

    looks like its going to be either a # 122 or a #112 for an '86

    I think the 108 main is for a 84-85
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  8. 10-25-2010, 09:45 PM #8
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    Quote Originally Posted by MrPretty View Post
    http://www.oscarmayer.net/atc/manual...ice_Manual.pdf

    looks like its going to be either a # 122 or a #112 for an '86

    I think the 108 main is for a 84-85
    Thanks for the info man! Looks like it was either a 122 or 112 but they moved the clip to a different position.. Looks like they did this for different altitudes.
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110
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  9. 10-26-2010, 12:21 AM #9
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    THe stock size main is a 112.
    I have a full dg exhaust and a UNI airfilter. I tried a 120, 125, and 130 main jet.
    The 125 was the best for me. Play around with a a few sizes.
    But if your running a full pipe and airfilter. You have to atleast go to a 120 in the main.
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  10. 10-26-2010, 01:35 AM #10
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    Quote Originally Posted by Nightmare View Post
    THe stock size main is a 112.
    I have a full dg exhaust and a UNI airfilter. I tried a 120, 125, and 130 main jet.
    The 125 was the best for me. Play around with a a few sizes.
    But if your running a full pipe and airfilter. You have to atleast go to a 120 in the main.
    Good info! Thanks!
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110
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