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DT125R FORUM

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  4. PIC HEAVY (wr200 topend , zeeltronic, tm34ss carb, V-force reed block,Larger radiator,DEP PIPE,)

PIC HEAVY (wr200 topend , zeeltronic, tm34ss carb, V-force reed block,Larger radiator,DEP PIPE,)

Scheduled Pinned Locked Moved DTR
tuningdtryamaha2003wr200
254 Posts 25 Posters 158.1k Views 6 Watching
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  • Louis-DT-WRL Offline
    Louis-DT-WRL Offline
    Louis-DT-WR
    wrote on last edited by Louis-DT-WR
    #20

    I cut off the flow guide from the manifold (this is not a restrictor, people think it is but it isn't, removing it will lose performance) I do not need this as my reed block comes with one fitted.

    alt text

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    • Louis-DT-WRL Offline
      Louis-DT-WRL Offline
      Louis-DT-WR
      wrote on last edited by Louis-DT-WR
      #21

      See what I mean?
      alt text

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      • Louis-DT-WRL Offline
        Louis-DT-WRL Offline
        Louis-DT-WR
        wrote on last edited by Louis-DT-WR
        #22

        I used a tm34ss from a Aprilia rs250
        alt text

        Note the angle spigots, this makes fitting a lot more easy and the float bowl stays level

        alt text

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        • Louis-DT-WRL Offline
          Louis-DT-WRL Offline
          Louis-DT-WR
          wrote on last edited by Louis-DT-WR
          #23

          I had to carefully enlarge the manifolds bore to 34mm and also increase the size to fit the carburetor in, I managed to add a grip step to match the carburetor (this adds more stability.)

          Because the size of the carbs inlet I had to compromise. I tried a yz250 evos rubber boot which almost was perfect but it kept breaking due to age.

          So plan B was like this:

          alt text

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          • Louis-DT-WRL Offline
            Louis-DT-WRL Offline
            Louis-DT-WR
            wrote on last edited by Louis-DT-WR
            #24

            alt text
            alt text

            It wasn't the nicest way, but it works well

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            • Louis-DT-WRL Offline
              Louis-DT-WRL Offline
              Louis-DT-WR
              wrote on last edited by Louis-DT-WR
              #25

              I also removed the top of the airbox previous to this mod

              alt text
              alt text

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              • Louis-DT-WRL Offline
                Louis-DT-WRL Offline
                Louis-DT-WR
                wrote on last edited by Louis-DT-WR
                #26

                A few pictures of it fitted.
                alt text
                alt text

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                • Louis-DT-WRL Offline
                  Louis-DT-WRL Offline
                  Louis-DT-WR
                  wrote on last edited by
                  #27

                  I had to blank off the vacuum pipes on the carb and I also adjusted the autolube because of all my modifications

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                  • Louis-DT-WRL Offline
                    Louis-DT-WRL Offline
                    Louis-DT-WR
                    wrote on last edited by Louis-DT-WR
                    #28

                    I forgot to say that my DEP exhaust is for a wr200, so it's perfect for my bike. I had to make custom fixing and rubber mounts. Note how long the silencer was hahaha
                    alt text

                    alt text

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                    • Louis-DT-WRL Offline
                      Louis-DT-WRL Offline
                      Louis-DT-WR
                      wrote on last edited by Louis-DT-WR
                      #29

                      Dt125r dep and wr200 dep together. It looks like I'm punching it, can't remember the reason for that 😆
                      alt text

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                      • Louis-DT-WRL Offline
                        Louis-DT-WRL Offline
                        Louis-DT-WR
                        wrote on last edited by Louis-DT-WR
                        #30

                        The silencer was a bit long 😉
                        alt text

                        alt text

                        So I cut it down, I'm after a different end cap if anyone has one spare?
                        alt text

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                        • Biker_123B Offline
                          Biker_123B Offline
                          Biker_123
                          wrote on last edited by
                          #31

                          This bike really is amazing and I'm totally enjoying reading through this 😃. I'm guessing all these upgrades must have cost a lot of money ,definitely worth it though lol if this was my bike I'd be scared to use it incase it got dirt on it or a scratch 😁

                          Every problem has a solution

                          Louis-DT-WRL 1 Reply Last reply
                          0
                          • Biker_123B Biker_123

                            This bike really is amazing and I'm totally enjoying reading through this 😃. I'm guessing all these upgrades must have cost a lot of money ,definitely worth it though lol if this was my bike I'd be scared to use it incase it got dirt on it or a scratch 😁

                            Louis-DT-WRL Offline
                            Louis-DT-WRL Offline
                            Louis-DT-WR
                            wrote on last edited by
                            #32

                            @Biker_123 thanks a lot, not as much as you would think as I got most of the parts trade and I know a few engineers. And I sold a lot of the old parts for decent money.

                            Stay tuned 😉

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                            • DartyD Offline
                              DartyD Offline
                              Darty
                              wrote on last edited by Darty
                              #33

                              Sweet ride. Beast. Did you try the 3XP 200 top end with a 125 crank before? I know its a longer stroke with the 200 series. Which one do you think was lighter? I got a WR200 top end and 200R bottom end and gearbox replacement for a rebuild but I won't have a chance to compare the two.

                              Keep it real

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                              • Louis-DT-WRL Offline
                                Louis-DT-WRL Offline
                                Louis-DT-WR
                                wrote on last edited by
                                #34

                                No other won't run with a 125 crank it's like 8mm shorter stroke, also a dt200r has 0.7mm shorter stroke than a wr200 if I remember right. If you want to sell your top end I could build another engine 😉

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                                • Louis-DT-WRL Offline
                                  Louis-DT-WRL Offline
                                  Louis-DT-WR
                                  wrote on last edited by Louis-DT-WR
                                  #35

                                  And ofcourse I had zeeltronic make the first DT125R CDI for me and for all my help I only had to pay for the handheld reprogrammer

                                  This was perfect for my project to set the powervalve limits and curve.

                                  Also great for ignition timing.

                                  Although they did wire it wrong originally and the powervalve ran backwards 😆

                                  But soon sorted it.
                                  alt text

                                  BluestoesonnoseB 1 Reply Last reply
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                                  • DartyD Offline
                                    DartyD Offline
                                    Darty
                                    wrote on last edited by
                                    #36

                                    Safe, yeah 200s are like 57mm, 125s at 50mm. just wondered if you had built up a crank shaft assembly before hand. I wanted to start from scratch with a crank. Yeah had my suspicions about a DT200R crank in a WR barrel. I'll see what I can do with mine still.

                                    This stuffs getting hard to get.

                                    Keep it real

                                    Louis-DT-WRL 1 Reply Last reply
                                    1
                                    • DartyD Darty

                                      Safe, yeah 200s are like 57mm, 125s at 50mm. just wondered if you had built up a crank shaft assembly before hand. I wanted to start from scratch with a crank. Yeah had my suspicions about a DT200R crank in a WR barrel. I'll see what I can do with mine still.

                                      This stuffs getting hard to get.

                                      Louis-DT-WRL Offline
                                      Louis-DT-WRL Offline
                                      Louis-DT-WR
                                      wrote on last edited by
                                      #37

                                      @Darty gets easier to understand 🙂 if you skim the top off the barrel to allow for the dt200r crank it would change the port timing slightly, or you could skim half off the top and half off the barrel base. I've thought about that before

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                                      • Louis-DT-WRL Offline
                                        Louis-DT-WRL Offline
                                        Louis-DT-WR
                                        wrote on last edited by Louis-DT-WR
                                        #38

                                        So that was the engine / tuning complete.

                                        A summary of what else I had done prior:

                                        Shot blast and powdercoated all metal parts in blue and white.
                                        alt text

                                        alt text
                                        First time rebuilding forks, removing the stems bottom bearing was very difficult.

                                        I recently rewired the rear looming

                                        alt text

                                        1 Reply Last reply
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                                        • Louis-DT-WRL Offline
                                          Louis-DT-WRL Offline
                                          Louis-DT-WR
                                          wrote on last edited by Louis-DT-WR
                                          #39

                                          Throw back pictures showing previous powdercoating, zinc plating and every bolt replaced with Allen cap head stainless steel bolts

                                          alt text
                                          alt text

                                          I had to drill out so many bolts and tap the holes because most were seized.

                                          alt text

                                          1 Reply Last reply
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