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DT125R FORUM

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  4. Athena 170

Athena 170

Scheduled Pinned Locked Moved Top End
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  • CalumC Calum

    @declan Yeah but that's just the cost of tuning for you bud.

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #63

    @calum cost of genuine carbs tbh carbs are quite pricey

    1 Reply Last reply
    0
    • Irongamer727I Offline
      Irongamer727I Offline
      Irongamer727
      wrote on last edited by
      #64

      Things are not going my way. 180km into break in I spotted 2 small holes on the cylinder. I have spoken to the company I bought the kit from and they will contact Athena for assistance. Hopefully this ends well..

      https://youtu.be/JSdh4gz1p8w

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      • Irongamer727I Offline
        Irongamer727I Offline
        Irongamer727
        wrote on last edited by
        #65

        What do you think? I've now fitted a 310 main jet and she's still a bit down on power. It felt better than the 290 for sure. Now I'm thinking about buying a couple of extra jets, 320-350.
        Is this even possible? I've not spoken to anyone running higher than 280.

        1 Reply Last reply
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        • 2 Offline
          2 Offline
          2stroketerry
          wrote on last edited by
          #66

          If using a TM28 carb then need a 300 main jet with a 27.5 idle jet. Main jets go up to 430. Put clip in the bottom groove on needle.
          https://www.sip-scootershop.com/en/products/main+jet+mikuni+300+_40703000

          https://www.sip-scootershop.com/en/products/idle+jet+mikuni+275+_40726000

          Irongamer727I 1 Reply Last reply
          0
          • 2 2stroketerry

            If using a TM28 carb then need a 300 main jet with a 27.5 idle jet. Main jets go up to 430. Put clip in the bottom groove on needle.
            https://www.sip-scootershop.com/en/products/main+jet+mikuni+300+_40703000

            https://www.sip-scootershop.com/en/products/idle+jet+mikuni+275+_40726000

            Irongamer727I Offline
            Irongamer727I Offline
            Irongamer727
            wrote on last edited by
            #67

            @2stroketerry I'm running 310 now and it's certainly not optimal. Idle is 35 now, definitely too big.

            1 Reply Last reply
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            • Irongamer727I Offline
              Irongamer727I Offline
              Irongamer727
              wrote on last edited by
              #68

              In reality, what would cause the bike not to start on the first or second spin on the starter. Is it just down to the pilot jet and fuel/Air mix?
              Obviously a good battery and fresh electric components will make things easier but I got that covered.

              I've read in the Haynes that there is supposed to be a starter jet in the later carbs? Much of what that books says makes no sense...

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              • Louis-DT-WRL Offline
                Louis-DT-WRL Offline
                Louis-DT-WR
                wrote on last edited by
                #69

                I run the autolube on my dt125r bottom end with wr200 top end. I just adjusted it to suit the larger capacity. I've run it for years. Autolube is brilliant

                Irongamer727I 1 Reply Last reply
                2
                • Louis-DT-WRL Louis-DT-WR

                  I run the autolube on my dt125r bottom end with wr200 top end. I just adjusted it to suit the larger capacity. I've run it for years. Autolube is brilliant

                  Irongamer727I Offline
                  Irongamer727I Offline
                  Irongamer727
                  wrote on last edited by Irongamer727
                  #70

                  @louis-james hows that thing to start?

                  1 Reply Last reply
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                  • Louis-DT-WRL Offline
                    Louis-DT-WRL Offline
                    Louis-DT-WR
                    wrote on last edited by
                    #71

                    First kick 99% of the time

                    Irongamer727I 1 Reply Last reply
                    0
                    • Louis-DT-WRL Louis-DT-WR

                      First kick 99% of the time

                      Irongamer727I Offline
                      Irongamer727I Offline
                      Irongamer727
                      wrote on last edited by
                      #72

                      @louis-james you run the 28mm carb? The flat one?

                      1 Reply Last reply
                      0
                      • Louis-DT-WRL Offline
                        Louis-DT-WRL Offline
                        Louis-DT-WR
                        wrote on last edited by
                        #73

                        I used to, I had the tmx30 for a while, now a tm34ss

                        Irongamer727I 1 Reply Last reply
                        0
                        • Louis-DT-WRL Louis-DT-WR

                          I used to, I had the tmx30 for a while, now a tm34ss

                          Irongamer727I Offline
                          Irongamer727I Offline
                          Irongamer727
                          wrote on last edited by
                          #74

                          @louis-james you ran the 28 with the wr200?

                          1 Reply Last reply
                          0
                          • Louis-DT-WRL Offline
                            Louis-DT-WRL Offline
                            Louis-DT-WR
                            wrote on last edited by
                            #75

                            No, I had the 30 when it was still a 125. Lid was cut off the air box the the 28mm btw

                            Irongamer727I 1 Reply Last reply
                            0
                            • Louis-DT-WRL Louis-DT-WR

                              No, I had the 30 when it was still a 125. Lid was cut off the air box the the 28mm btw

                              Irongamer727I Offline
                              Irongamer727I Offline
                              Irongamer727
                              wrote on last edited by
                              #76

                              @louis-james alright

                              Louis-DT-WRL 1 Reply Last reply
                              0
                              • Irongamer727I Irongamer727

                                @louis-james alright

                                Louis-DT-WRL Offline
                                Louis-DT-WRL Offline
                                Louis-DT-WR
                                wrote on last edited by
                                #77

                                @irongamer727 recommend getting a decent reed block on there. Many can be modified to fit

                                Irongamer727I 1 Reply Last reply
                                0
                                • Louis-DT-WRL Louis-DT-WR

                                  @irongamer727 recommend getting a decent reed block on there. Many can be modified to fit

                                  Irongamer727I Offline
                                  Irongamer727I Offline
                                  Irongamer727
                                  wrote on last edited by
                                  #78

                                  @louis-james naah at the moment I simply want her to run good, start easy and stay that way.

                                  1 Reply Last reply
                                  0
                                  • Irongamer727I Offline
                                    Irongamer727I Offline
                                    Irongamer727
                                    wrote on last edited by Irongamer727
                                    #79

                                    As I suspected my pilot jet to be too big (size 35) I ordered a smaller 25. But the bike literally ran like shit and the idle was very uncontrolled and the bike just sounded wrong!

                                    Is the next step to order a larger?
                                    I can without a drop in rpm turn the airscrew all the way in, no change really.

                                    That must be an indicator that it's to small right?

                                    1 Reply Last reply
                                    0
                                    • J Offline
                                      J Offline
                                      Jens Eskildsen
                                      wrote on last edited by
                                      #80

                                      Yeb sounds like you need to up the idlejet in size.

                                      1 Reply Last reply
                                      0
                                      • Irongamer727I Offline
                                        Irongamer727I Offline
                                        Irongamer727
                                        wrote on last edited by
                                        #81

                                        @Calum agree?

                                        1 Reply Last reply
                                        0
                                        • Glynn123G Offline
                                          Glynn123G Offline
                                          Glynn123
                                          wrote on last edited by
                                          #82

                                          Id go a fair bit bigger idle jet than a 25, im running a 27.5 pilot on 125 bore with snorkel removed here in sunny scotland, id imagine the 170 kit would require a fair bit bigger pilot especially in your climate, maybe a 30?

                                          Irongamer727I 1 Reply Last reply
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