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Should I adjust these valve clearances?

Discussion in 'XJ Technical Chat' started by CJ06XLT, Jun 15, 2009.

  1. CJ06XLT

    CJ06XLT Member

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    I pulled of the valve cover last night and checked the clearances of my XJ650RJ. They seemed to be pretty good, here's the numbers:

    Intake
    .005 .004 .005 .006

    Exhaust
    .006 .0055 .0045 .0055


    Should I swap out the shims to get completely w/in spec? Or is this okay until next time. I don't have the shim tool yet, but don't mind purchasing if I need to.

    Also note, this is step 1 in my 10 step plan to a better running bike, next up is the carb clean, synch, tune, synch, tune....

    Thanks!
     
  2. MiCarl

    MiCarl Active Member

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    Assuming your measurements are in inches:

    #2 intake is too tight

    All exhaust valves too tight.
     
  3. Galamb

    Galamb Member

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  4. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Carl is absolutely correct; and it can't "wait until next time" because having correct valve clearances has to come BEFORE any carb tuning efforts or you're wasting your tme.
     
  5. CJ06XLT

    CJ06XLT Member

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    Thanks for the replies. I'll try to get the shim sizes tonight so I can get some replacements ordered up. Think i'll start with the zip-tie shim tool.
     

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