help i need a piston xl600

Discussion in 'Thumpers' started by sh0rtlife, Nov 8, 2012.

  1. mcma111

    mcma111 Long timer

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    You either need to put the pipe down or put some glasses on. The XL600r uses a 100mm piston. The XR600r uses a 97mm piston. The XR650l uses a 100 piston. Have you even measured the cylinder??

    http://www.wiseco.com/ProductSearch.aspx
    #21
  2. RubberSideUp

    RubberSideUp Adventurer

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    Do you have an XR engine, possibly, or an XL bottom end with an XR (97mm) cylinder?
    #22
  3. sh0rtlife

    sh0rtlife Been here awhile

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    ok..ive verifyed it is a 99.5mm piston that was in there..or was..the bore now is a 100mm

    odd my manual states it should be a 97mm bore....ahh well this makes things simple now LOL
    #23
  4. RFVC600R

    RFVC600R GOT SAND? NO!

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    Go with the big bore kit. I eat up XRLs all day. not sure of the size i got, the receipt the PO gave me is unclear on the size, just says "Wiseco hi-comp." All I know is it likes 91 octane and when I roll back on the throttle, it is pure exhilaration for a single lung bike.
    #24
  5. RFVC600R

    RFVC600R GOT SAND? NO!

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    Go with the big bore kit. I eat up XRLs all day. not sure of the size i got, the receipt the PO gave me is unclear on the size, just says "Wiseco hi-comp." All I know is when I roll back on the throttle, it is pure exhilaration for a single lung bike. on the street the front end just rises right up and im running the stock gearing :fyyff
    #25
  6. sh0rtlife

    sh0rtlife Been here awhile

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    i allready had a problem keeping the front down on the street and the rear under me off road....

    anyone else find it weird that the slug i removed was 99.5mm...my brain just cant wrap around that if the stock xl bore is 100mm how did it have a 99.5 in it:huh
    #26
  7. mcma111

    mcma111 Long timer

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    How old is the picton, Miles?? Most likely the piston is a 100mm but has shrunk from wear. They do that ya know. The wear out bit.
    #27
  8. sh0rtlife

    sh0rtlife Been here awhile

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    but that doesnt explain the bore cleaned and ready to roll for the next slug comming out at 100mm
    #28
  9. mcma111

    mcma111 Long timer

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    Sure it does. What's harder? The steel cylinder sleeve or the alloy piston? Who measured the piston and cylinder? You or a machinist?
    #29
  10. mcma111

    mcma111 Long timer

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    I have a mid 80's XR600 cylinder that has a 100mm Wiseco piston in it. This is used but in very good condition. Just give the cylinder a ball bone and order a new set of rings. I have the hone. You'll be set. Yours for $100.00 + shipping.
    #30
  11. sh0rtlife

    sh0rtlife Been here awhile

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    after much confusion much head scratching 2 failed orders and a call into XR's...they dont have any 100mm ever the .25/.50 overs...so..im going with a 101mm.....measured out the sleeve which is currently at 100mm with an OD of a smidge over 105

    definatly adding in an oil cooler this time around
    #31