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DT125R FORUM

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  2. Tuning
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  4. Dt200r cylinder

Dt200r cylinder

Scheduled Pinned Locked Moved Top End
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  • A Offline
    A Offline
    andrewj1680
    wrote on last edited by
    #1

    Anyone know if the 3et cylinder from a Dt200r will direct bolt onto a dt125r any help is much appreciated

    1 Reply Last reply
    0
    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      Bolts onto the crankcase, but the stroke is out so you need to either get a 200 crank, or retro fit the connecting rod.

      See @Louis-James build thread.

      Jeez Louis I couldn't find you. I was searching The Only Way is Yamaha LMAO!

      Always Originate, Never Pirate!

      A 1 Reply Last reply
      0
      • CalumC Calum

        Bolts onto the crankcase, but the stroke is out so you need to either get a 200 crank, or retro fit the connecting rod.

        See @Louis-James build thread.

        Jeez Louis I couldn't find you. I was searching The Only Way is Yamaha LMAO!

        A Offline
        A Offline
        andrewj1680
        wrote on last edited by
        #3

        @Calum ideal thanks calum Will look into getting the crank too then 👍

        1 Reply Last reply
        0
        • CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #4

          Definitely read his build.

          What you actually want is the 3xp00 engine as it is far superior

          Always Originate, Never Pirate!

          1 Reply Last reply
          0
          • S Offline
            S Offline
            scrimsmustang
            wrote on last edited by
            #5

            Fitting a 200 rod to a 125 crank wont work, you need the 200 crank in 200 cases or you need 125 cases machined to fit the 200 crank.

            NINJAN 1 Reply Last reply
            3
            • A Offline
              A Offline
              andrewj1680
              wrote on last edited by
              #6

              I abandoned this idea as I bought a wr200 3exp whole bike instead and rebuilding as a second bike gonna do a complete rebuild on everything thanks for the advice tho the dt is gonna stay almost original now other than the zeeltronic ignition mick abbey tuning head and barrel mod and a complete dep exhaust but have all original parts to go back on if I do decide to drop it back to a standard bike which is hard to find now

              CalumC 1 Reply Last reply
              0
              • A andrewj1680

                I abandoned this idea as I bought a wr200 3exp whole bike instead and rebuilding as a second bike gonna do a complete rebuild on everything thanks for the advice tho the dt is gonna stay almost original now other than the zeeltronic ignition mick abbey tuning head and barrel mod and a complete dep exhaust but have all original parts to go back on if I do decide to drop it back to a standard bike which is hard to find now

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #7

                @andrewj1680 @scrimsmustang is an absolute gold mine for knowledge! I hope all is well bud!

                Always Originate, Never Pirate!

                A 1 Reply Last reply
                0
                • S scrimsmustang

                  Fitting a 200 rod to a 125 crank wont work, you need the 200 crank in 200 cases or you need 125 cases machined to fit the 200 crank.

                  NINJAN Offline
                  NINJAN Offline
                  NINJA
                  wrote on last edited by
                  #8

                  @scrimsmustang Is that the real scrimsey??? LOL 😉

                  SEDUCED BY THE DARK SIDE!!!

                  1 Reply Last reply
                  0
                  • CalumC Calum

                    @andrewj1680 @scrimsmustang is an absolute gold mine for knowledge! I hope all is well bud!

                    A Offline
                    A Offline
                    andrewj1680
                    wrote on last edited by
                    #9

                    @Calum totally agree, totally different bike now you can really feel how restricted that head really was, I had the bike jetted before the cylinder went away and I've had to back the jets off slightly I'm guessing it's where the flow is better now

                    1 Reply Last reply
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                    • Louis-DT-WRL Offline
                      Louis-DT-WRL Offline
                      Louis-DT-WR
                      wrote on last edited by
                      #10

                      The cylinder legs won't fit, cases need boring out for crank and cylinder legs, transfer ports enlarging, and the correct crank. See my thread 🙂

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

                        The cylinder legs won't fit, cases need boring out for crank and cylinder legs, transfer ports enlarging, and the correct crank. See my thread 🙂

                        A Offline
                        A Offline
                        andrewj1680
                        wrote on last edited by
                        #11

                        @Louis-James thanks bud I've decided to keep the dt as a 125 and rebuilding a wr200 instead, stunning bike you have there takes awhile to get through your build spec too lol can I ask what your v force reeds are meant for i can't seem to find them for the wr200 👍

                        1 Reply Last reply
                        0
                        • Louis-DT-WRL Offline
                          Louis-DT-WRL Offline
                          Louis-DT-WR
                          wrote on last edited by
                          #12

                          Thanks a lot, they're for a YAMAHA Blaster 200

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

                            Thanks a lot, they're for a YAMAHA Blaster 200

                            A Offline
                            A Offline
                            andrewj1680
                            wrote on last edited by
                            #13

                            @Louis-James you alright mate just wondering what crank you ended up using and where did you get it from? I've stripped my engine down and personally don't think it needs it but I'd rather do it properly first time around, I've searched but seems the only options are the hodrods crank which don't seem to have many good reviews and a rabbit rebuild kit that I can't seem to find much info on at all

                            Louis-DT-WRL 1 Reply Last reply
                            0
                            • A andrewj1680

                              @Louis-James you alright mate just wondering what crank you ended up using and where did you get it from? I've stripped my engine down and personally don't think it needs it but I'd rather do it properly first time around, I've searched but seems the only options are the hodrods crank which don't seem to have many good reviews and a rabbit rebuild kit that I can't seem to find much info on at all

                              Louis-DT-WRL Offline
                              Louis-DT-WRL Offline
                              Louis-DT-WR
                              wrote on last edited by
                              #14

                              @andrewj1680 I ran it with a Blaster wiseco crank for a while with a modified spacer behind the primary drive gear which made it have less overlap on the clutch, I wasn't happy with it worrying it would damage it, so I bought a new wr200 crank and sold the wiseco one 🙂

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

                                @andrewj1680 I ran it with a Blaster wiseco crank for a while with a modified spacer behind the primary drive gear which made it have less overlap on the clutch, I wasn't happy with it worrying it would damage it, so I bought a new wr200 crank and sold the wiseco one 🙂

                                A Offline
                                A Offline
                                andrewj1680
                                wrote on last edited by
                                #15

                                @Louis-James think thats how I'll go about it, when I spoke to fowlers they were suggesting I had to buy the crank in 2 halves is this right? Your don't have a part number do you bud? Seem to be getting a lot of ideas from your build the bigger carb reeds for example it's nice to know it's already been done

                                1 Reply Last reply
                                1
                                • Louis-DT-WRL Offline
                                  Louis-DT-WRL Offline
                                  Louis-DT-WR
                                  wrote on last edited by
                                  #16

                                  A whole crank. Fowlers have it listed on their website as a single item. There are rs250 carbs on eBay, mine was £50 in perfect working order. I can find a part number if you can't

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                                  0
                                  • Louis-DT-WRL Offline
                                    Louis-DT-WRL Offline
                                    Louis-DT-WR
                                    wrote on last edited by
                                    #17

                                    3XP1140000 says it replaces 2TV-11400-00

                                    Fowlers list this also for the Dt200r which is strange because apparently the wr200/dt200wr is meant to have 0.7mm longer stroke.

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

                                      3XP1140000 says it replaces 2TV-11400-00

                                      Fowlers list this also for the Dt200r which is strange because apparently the wr200/dt200wr is meant to have 0.7mm longer stroke.

                                      A Offline
                                      A Offline
                                      andrewj1680
                                      wrote on last edited by
                                      #18

                                      @Louis-James thanks mate appreciate it I'll get on it tomorrow first thing, there is nothing wrong with the crank in it but knowing my luck they will have discontinued it by the time I do need it lol always the way ain't it

                                      1 Reply Last reply
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