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xj550 vs. xj650 airbox?

Discussion in 'XJ Technical Chat' started by bbacher, May 28, 2006.

  1. bbacher

    bbacher Member

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    I need to find an airbox for my xj550rj. Someone will trade me my pod filters for an airbox, but his is a xj650rj.

    Will the 650 airbox work on my 550?
     
    bbacher, May 28, 2006
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  2. Foximus

    Foximus Member

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    Why dont you want the pods?


    Thats gonna be my next upgrade.. Pods and the stage 2 and 3 jet kit.
     
    Foximus, May 28, 2006
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  3. jdrich48

    jdrich48 Member

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    According to the x-ref only the 81 550RH and 83 550RK will fit your bike.
     
    jdrich48, May 28, 2006
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  4. bbacher

    bbacher Member

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    The local bike shop suggested that the best way to get the bike tuned to run better is to go back to the stock air box. Otherwise, it's anybodies guess as to what the settings ought to be (jet sizes, etc.).
     
    bbacher, May 28, 2006
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  5. jdrich48

    jdrich48 Member

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    Keep an eye out on ebay, or maybe check some local wreckers.
    Good luck
     
    jdrich48, May 28, 2006
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  6. bbacher

    bbacher Member

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    Thanks for the advice. I found one on ebay for $10.
     
    bbacher, May 29, 2006
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  7. Hired_Goon

    Hired_Goon Member

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    Trial and error is the cure to correct jet sizes and the following link is from some one with a crude formula for getting it right. Info is XS1100 related but is a good reference for anyone contemplating changes.

    http://www.xs11.com/forum/showthread.ph ... readid=382
     
    Hired_Goon, May 29, 2006
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  8. bbacher

    bbacher Member

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    That's a great link, but it raises the question:

    Where can I find info on the stock jet, needle, etc. sizes? I really don't know whether what is in there now is stock or not. I found a website that says stock main jet is 112.5, but that's all I've found.

    My bike is an xj550rj, with mikuni carbs.
     
    bbacher, May 30, 2006
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  9. Hired_Goon

    Hired_Goon Member

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    My clymer manual has all the sizes for my RH. RJ's are listed as the same.

    Main Jet 112.5
    Needle jet O-8
    Pilot jet 35
    Starter jet 35
    Jet needle 4GZ11
    Main air jet 70
    Pilot air jet 170
    Throttle valve 130

    This coincides with the info on http://www.yamahaaccy.com/parts.aspx
    Just look up the year and model to get a pic of where each jet is located.
     
    Hired_Goon, May 30, 2006
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  10. bbacher

    bbacher Member

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    Thanks a million!
     
    bbacher, May 30, 2006
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  11. Foximus

    Foximus Member

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    Well... in that case... Ill take your pod filters... =D
     
    Foximus, May 30, 2006
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  12. bbacher

    bbacher Member

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    Armed with this good info, I think I'll try to make a go of it with the pods...
     
    bbacher, May 30, 2006
    #12

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