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carburetor sizing

Discussion in 'XJ Technical Chat' started by Ltdave, Sep 2, 2008.

  1. Ltdave

    Ltdave Member

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    as far east as you can get in michigan 43.027407,
    i saw on ebay a set of carbs for the xj900...

    the ad says that they are the 35mm (maybe 36mm) sized carbs...

    what does the 35mm refer to? the diameter of the slides? or the butterfly valves? something else?

    just curious...

    thanks
     
    Ltdave, Sep 2, 2008
    #1
  2. Ass.Fault

    Ass.Fault Active Member

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    i thought it was diameter, thought is the operative word there
     
    Ass.Fault, Sep 2, 2008
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  3. RickCoMatic

    RickCoMatic Well-Known Member

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    The 900 runs 35mm Mikuni's.

    The "35mm" is the Inside Diameter of the Throttle Body that extends from the front of the Carb.
    The part which gets pushed-into the Intake Manifolds.
    (Not the Airbox side.)
     
    RickCoMatic, Sep 2, 2008
    #3
  4. gaillarry

    gaillarry Member

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    Are all the XJ carbs the same size?. I believe my 81 Seca 750 has 35mm carbs.
     
    gaillarry, Sep 3, 2008
    #4
  5. stereomind

    stereomind Active Member

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    gaillarry, your 81 Seca has 32mm Hitachi carbs (HSC32). The principle is the same, but none of the parts are interchangeable.
     
    stereomind, Sep 3, 2008
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