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. Owners Build Threads
  3. DTR
  4. 2003 Yamaha Dt125R Project

2003 Yamaha Dt125R Project

Scheduled Pinned Locked Moved DTR
68 Posts 14 Posters 8.1k 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.
  • Walney-ReptilesW Offline
    Walney-ReptilesW Offline
    Walney-Reptiles
    wrote on last edited by
    #23

    Hiya again folks

    So i have some good news i have started at a garage as a welder / fabricator repairing rotten sills on vans, cars, buses etc....

    My boss is kind enough to let me redo and weld new nuts and other work to all my parts before he sends it all off for powder coating, i have one question regarding the suspention linkage and bushes etc... I dont want to pay £355 for genuine yamah bearings and oil seals etc... so i want to know what size bearings i can get as a replacment instead of the standard roller bearings i wanna use ball bearings instead anyone know what size bearings i will need?

    D 1 Reply Last reply
    0
    • Walney-ReptilesW Walney-Reptiles

      Hiya again folks

      So i have some good news i have started at a garage as a welder / fabricator repairing rotten sills on vans, cars, buses etc....

      My boss is kind enough to let me redo and weld new nuts and other work to all my parts before he sends it all off for powder coating, i have one question regarding the suspention linkage and bushes etc... I dont want to pay £355 for genuine yamah bearings and oil seals etc... so i want to know what size bearings i can get as a replacment instead of the standard roller bearings i wanna use ball bearings instead anyone know what size bearings i will need?

      D Offline
      D Offline
      DTR+NSR
      wrote on last edited by
      #24

      I managed to get branded roller swingarm bearings for about half the price of Yamaha ones, the bearing code will be on the side of the old bearings if you still have them.

      Walney-ReptilesW 1 Reply Last reply
      0
      • D DTR+NSR

        I managed to get branded roller swingarm bearings for about half the price of Yamaha ones, the bearing code will be on the side of the old bearings if you still have them.

        Walney-ReptilesW Offline
        Walney-ReptilesW Offline
        Walney-Reptiles
        wrote on last edited by
        #25

        @DTR-NSR i dont have them no more there was nawt left of them anychance you may have old ones laying around to get numbers off?

        declanD 1 Reply Last reply
        0
        • Walney-ReptilesW Walney-Reptiles

          @DTR-NSR i dont have them no more there was nawt left of them anychance you may have old ones laying around to get numbers off?

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #26

          @Walney-Reptiles you need linkage stuff or swing arm stuff?

          Walney-ReptilesW 1 Reply Last reply
          0
          • declanD declan

            @Walney-Reptiles you need linkage stuff or swing arm stuff?

            Walney-ReptilesW Offline
            Walney-ReptilesW Offline
            Walney-Reptiles
            wrote on last edited by
            #27

            @declan I need the linkage stuff

            1 Reply Last reply
            0
            • Walney-ReptilesW Offline
              Walney-ReptilesW Offline
              Walney-Reptiles
              wrote on last edited by
              #28

              Also can someone link me to the upgrade bearings for the headset on the 2002 yamaha dtr?

              CalumC 1 Reply Last reply
              0
              • Walney-ReptilesW Walney-Reptiles

                Also can someone link me to the upgrade bearings for the headset on the 2002 yamaha dtr?

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #29

                @Walney-Reptiles There are upgradable bearings?

                Always Originate, Never Pirate!

                Walney-ReptilesW 1 Reply Last reply
                0
                • CalumC Calum

                  @Walney-Reptiles There are upgradable bearings?

                  Walney-ReptilesW Offline
                  Walney-ReptilesW Offline
                  Walney-Reptiles
                  wrote on last edited by
                  #30

                  @Calum well i say that what i mean is you can change the top bearing to taper bearings instead of the standard ring bearing

                  CalumC 1 Reply Last reply
                  0
                  • Walney-ReptilesW Walney-Reptiles

                    @Calum well i say that what i mean is you can change the top bearing to taper bearings instead of the standard ring bearing

                    CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #31

                    @Walney-Reptiles Not without changing the the yokes/bearing cup.

                    I done it cause I fitted USDs. But otherwise, no. Or I'm sure it could be done, but what would be the point?

                    Always Originate, Never Pirate!

                    D 1 Reply Last reply
                    0
                    • CalumC Calum

                      @Walney-Reptiles Not without changing the the yokes/bearing cup.

                      I done it cause I fitted USDs. But otherwise, no. Or I'm sure it could be done, but what would be the point?

                      D Offline
                      D Offline
                      DTR+NSR
                      wrote on last edited by
                      #32

                      @Calum my dt is fitted with tapper bearings top and bottom with out modifications, tapper bearings are able to cope with greater loads so generally last longer.

                      CalumC 1 Reply Last reply
                      0
                      • D DTR+NSR

                        @Calum my dt is fitted with tapper bearings top and bottom with out modifications, tapper bearings are able to cope with greater loads so generally last longer.

                        CalumC Offline
                        CalumC Offline
                        Calum
                        wrote on last edited by
                        #33

                        @DTR-NSR Cool, hit the geezer up! I didn't know it was a thing.

                        My DT was stolen and ramped. Forks bent, wheels bent, bearings in the head tube was fine. They are robust enough. Obviously Taper has its advantages.

                        Always Originate, Never Pirate!

                        1 Reply Last reply
                        0
                        • Walney-ReptilesW Offline
                          Walney-ReptilesW Offline
                          Walney-Reptiles
                          wrote on last edited by Walney-Reptiles
                          #34

                          Well i have made some more orders list below

                          Head race bearings
                          Linkage bearings and bushes
                          Rear swing arm bearings
                          Frunt wheel and Rear wheel bearings
                          in total £186.59

                          Heres a list with everythink i have bought since i started the project back in july including the above..

                          Athena 125cc cylinderhead kit £429.95
                          All bearings in engine (SimplyBearings.co.uk) one from pjme £128.09
                          All bearings on frame and wheels (coming from ebay.co.uk) £186.59
                          Athena full oilseals (from ebay.co.uk) £33.95
                          Athena Full gasket set (from ebay.co.uk) £29.99
                          MSP (replacment bits for inside engine that i lost) £45.48
                          Sub Total £854.05 SO FAR

                          I estimate there will be atleast £600-£700 more ontop left to be spent before it is complete

                          M 1 Reply Last reply
                          1
                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #35

                            Oh sweet bud. Sounds very expensive, but if its a job worth doing it's worth doing right.

                            Always Originate, Never Pirate!

                            Walney-ReptilesW 1 Reply Last reply
                            0
                            • CalumC Calum

                              Oh sweet bud. Sounds very expensive, but if its a job worth doing it's worth doing right.

                              Walney-ReptilesW Offline
                              Walney-ReptilesW Offline
                              Walney-Reptiles
                              wrote on last edited by
                              #36

                              @Calum I agree there mate, I will be getting a new carb ANY advice on carbs? im not after the cheapest one or the most expensive one also i will be getting one of them zeeltronic CDI's for my bike but id like to know if anyone on here has set one up? currently i have the 3RM-20 cdi units would the zeeltronic CDI replace that? i also use the PV System.

                              clawsC 1 Reply Last reply
                              0
                              • Walney-ReptilesW Offline
                                Walney-ReptilesW Offline
                                Walney-Reptiles
                                wrote on last edited by
                                #37

                                So i have Just ordered some more bits...

                                Yamaha WR125X Radiator With 12v fan (Im going to fabricate my own mounts for this so dont worry if you think it wont fit ordered this because my DTR one is Crap and the wr one was only £32 with free postage)

                                Also ordered
                                a second Rad fan witch was £18
                                DT125R Stainless Engine mounting allen bolts

                                🙂

                                Just an extra note im going to cut the elbow off the bottom of the radiator and spin it to point the correct way 🙂

                                1 Reply Last reply
                                0
                                • Walney-ReptilesW Offline
                                  Walney-ReptilesW Offline
                                  Walney-Reptiles
                                  wrote on last edited by
                                  #38

                                  Well i have had some Post Today 🙂

                                  Swingarm bearings and bushes and seals aka service kit

                                  Linkage bearings and bushes and seals aka service kit

                                  Head race Taper bearings top and bottom

                                  M 1 Reply Last reply
                                  2
                                  • Walney-ReptilesW Walney-Reptiles

                                    Well i have had some Post Today 🙂

                                    Swingarm bearings and bushes and seals aka service kit

                                    Linkage bearings and bushes and seals aka service kit

                                    Head race Taper bearings top and bottom

                                    M Offline
                                    M Offline
                                    morty
                                    wrote on last edited by
                                    #39

                                    @Walney-Reptiles where’d you get the linkage kit from pal?

                                    1 Reply Last reply
                                    0
                                    • Walney-ReptilesW Offline
                                      Walney-ReptilesW Offline
                                      Walney-Reptiles
                                      wrote on last edited by
                                      #40

                                      ebay mate heres the link if its allowed it cost £110 but it beats paying £355 from MSP

                                      https://www.ebay.co.uk/itm/Yamaha-DT-125-R-RE-X-SM-1988-2010-Rear-Suspension-Linkage-Bearing-Service-Kit/273964244490?hash=item3fc98a9e0a:g:Wd4AAOSwJppdUVu3

                                      declanD 1 Reply Last reply
                                      1
                                      • Walney-ReptilesW Walney-Reptiles

                                        ebay mate heres the link if its allowed it cost £110 but it beats paying £355 from MSP

                                        https://www.ebay.co.uk/itm/Yamaha-DT-125-R-RE-X-SM-1988-2010-Rear-Suspension-Linkage-Bearing-Service-Kit/273964244490?hash=item3fc98a9e0a:g:Wd4AAOSwJppdUVu3

                                        declanD Offline
                                        declanD Offline
                                        declan
                                        wrote on last edited by
                                        #41

                                        @Walney-Reptiles don’t suppose you could measure those linkage seals for me bud?

                                        Walney-ReptilesW 1 Reply Last reply
                                        0
                                        • Walney-ReptilesW Walney-Reptiles

                                          @Calum I agree there mate, I will be getting a new carb ANY advice on carbs? im not after the cheapest one or the most expensive one also i will be getting one of them zeeltronic CDI's for my bike but id like to know if anyone on here has set one up? currently i have the 3RM-20 cdi units would the zeeltronic CDI replace that? i also use the PV System.

                                          clawsC Offline
                                          clawsC Offline
                                          claws
                                          wrote on last edited by
                                          #42

                                          @Walney-Reptiles well with your setup i would recommend some 28mm - 32mm carb. for example a mikuni tm28 or a keihin pwk 28. im running a keihin pwk 36 on my dt but i have a 170cc kit on it. its still too big for the bike

                                          2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                                          1999 YZ250 with a 1999 DTR VIN

                                          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