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DT125R FORUM

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  4. Athena 170

Athena 170

Scheduled Pinned Locked Moved Top End
112 Posts 14 Posters 52.8k Views
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  • Irongamer727I Irongamer727

    @calum ehm. No. Won't change that. Problem lies somewhere else.

    CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #60

    @irongamer727 That's what you want mate.

    alt text

    https://www.ebay.co.uk/itm/YAMAHA-TZR-125-4DL-yr-92-CARBURETTOR-DELLORTO-VHSA-32-GS/282744266127?hash=item41d4df1d8f:g:GTwAAOSwrhhaFTOk

    That'll fix your problem guaranteed!

    I literally don't know why the original carb sucks balls lol.

    Always Originate, Never Pirate!

    declanD 1 Reply Last reply
    0
    • CalumC Calum

      @irongamer727 That's what you want mate.

      alt text

      https://www.ebay.co.uk/itm/YAMAHA-TZR-125-4DL-yr-92-CARBURETTOR-DELLORTO-VHSA-32-GS/282744266127?hash=item41d4df1d8f:g:GTwAAOSwrhhaFTOk

      That'll fix your problem guaranteed!

      I literally don't know why the original carb sucks balls lol.

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #61

      @calum I’d rathet bump start it than pay that price lol

      CalumC 1 Reply Last reply
      0
      • declanD declan

        @calum I’d rathet bump start it than pay that price lol

        CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #62

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

        Always Originate, Never Pirate!

        declanD 1 Reply Last reply
        0
        • 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

            1 Reply Last reply
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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
                  0
                  • 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...

                    1 Reply Last reply
                    0
                    • 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
                        0
                        • 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

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