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DT125R FORUM

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  3. New piston but no rebore

New piston but no rebore

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  • W Offline
    W Offline
    ward4014
    wrote on last edited by
    #1

    Do I need to rebore my head I have a noise coming from my bike sounds like a knock from the piston I'm gona strip it down and order a piston to fit the current bore my question is is there anything I need to check will I need to rebore if the cylinder looks OK or is it literaly a case of ordering the correct size piston and popping it in

    declanD 1 Reply Last reply
    0
    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      A specialist will tell you if you need a rebore.

      I would at minimum get it honed. Don't need to touch the head. Depending on clearances, may need to modify the powervalve.

      Always Originate, Never Pirate!

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      • W ward4014

        Do I need to rebore my head I have a noise coming from my bike sounds like a knock from the piston I'm gona strip it down and order a piston to fit the current bore my question is is there anything I need to check will I need to rebore if the cylinder looks OK or is it literaly a case of ordering the correct size piston and popping it in

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #3

        @ward4014 take it to your bike shop have them measure it and buy a piston while you are there

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        • W Offline
          W Offline
          ward4014
          wrote on last edited by
          #4

          Thanks guys I'll take it to the shop once I have it off I'm only changing the piston because I have never changed it it rides mint but just peace of mind

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