Skip to content
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Slate)
  • No Skin
Collapse
Brand Logo

DT125R FORUM

  1. Home
  2. Tuning
  3. Top End
  4. Athena 170

Athena 170

Scheduled Pinned Locked Moved Top End
112 Posts 14 Posters 28.2k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • 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
          0
          • 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
            0
            • 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
                                        • 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
                                          Reply
                                          • Reply as topic
                                          Log in to reply
                                          • Oldest to Newest
                                          • Newest to Oldest
                                          • Most Votes


                                          • Login

                                          • Don't have an account? Register

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups