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DT125R FORUM

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  2. Tuning
  3. Carburetor
  4. Standard jet size

Standard jet size

Scheduled Pinned Locked Moved Carburetor
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  • Haako SmithH Offline
    Haako SmithH Offline
    Haako Smith
    wrote on last edited by
    #1

    What is the standard carb siede for a Yamaha dt 125 R?

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    • CalumC Online
      CalumC Online
      Calum
      wrote on last edited by
      #2

      For the newer bikes it uses a 210 main jet. Or a 240 for the slightly older flat slide models.

      Always Originate, Never Pirate!

      Haako SmithH 1 Reply Last reply
      1
      • CalumC Calum

        For the newer bikes it uses a 210 main jet. Or a 240 for the slightly older flat slide models.

        Haako SmithH Offline
        Haako SmithH Offline
        Haako Smith
        wrote on last edited by
        #3

        @Calum Are you sure it uses 210 for original 28mm carb. IT seems a bit high dont IT?

        Glynn123G 1 Reply Last reply
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        • Haako SmithH Haako Smith

          @Calum Are you sure it uses 210 for original 28mm carb. IT seems a bit high dont IT?

          Glynn123G Offline
          Glynn123G Offline
          Glynn123
          wrote on last edited by
          #4

          @Haako-Smith Mikuni jet sizes differ to Keihn etc and flow differently, 210-240 main jet is correct on the standard flat slide 28mm

          Haako SmithH 1 Reply Last reply
          1
          • Glynn123G Glynn123

            @Haako-Smith Mikuni jet sizes differ to Keihn etc and flow differently, 210-240 main jet is correct on the standard flat slide 28mm

            Haako SmithH Offline
            Haako SmithH Offline
            Haako Smith
            wrote on last edited by
            #5

            @Glynn123 oh ok. That makes more sence.do you know what the differnece is? I am now running 146 main jet in a koso 32mm carb, but when i rev it at max it wont go over 8k in rpm.

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