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DT125R FORUM

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  4. Carb recommendation

Carb recommendation

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  • CalumC Offline
    CalumC Offline
    Calum
    wrote last edited by
    #4

    Oh awesome! Congrats on the bike. I've had mine now 16 odd years now!

    Some great advice here, but I'll just chime in with some alternative idea for food for thought, but it doesn't negate the great advice we have here.

    Many years ago, I went down the TZR Belgarda route, which effectively ran a DT125RE engine, just modified porting. As a result, I ended up using the carb from that bike, which was a Dellorto VHSA 32mm carb. These are probably easier to find as they're used heavily in the scooter community.

    I've never had problems with that setup, but I am not convinced that the bike is that rapid (despite all the mods I've done), but maybe I just got used to it.

    Always Originate, Never Pirate!

    K 1 Reply Last reply
    2
    • K Offline
      K Offline
      kepirok
      wrote last edited by
      #5

      Thank you so much for these recommendations it is greatly appreciated!!

      The stock carb has some parts missing, coolant lines clogged, rusted and the slider is very worn etc. When looking at prices to replace the missing and bad looking stuff, it costs $$$. I took it apart now and started cleaning it, I found someone nearby who is selling parts of his DT125R and has a carb will meet him later this week. If I can't find a decent stock carb, I will look for the Dellorto.

      The current chinese PWK in it I wouldn't risk running as the build quality is the worst I have ever seen. It's not just visually not appealing, the materials are so poor even the jets snapped during cleaning, housing is missing a piece on top etc. So beware this junk guys! Brand is most probably "Motoforce" based on similar listings.

      The exhaust should be this one: https://www.athena.eu/en-gb/lightweight-racing-complete-exhaust-kit-P20782.htm

      And the ignition is from a French manufacturer, Devmoto. They set a DT125R mapping by default on the ignition. This ignition doesn't control the power valve servo by default, if I am correct the Zeeltronic unit has this feature. Devmoto states on the website that it's possible to connect the two if you send the servo and the iginition unit to them as some modifications are required on the servo for this.
      Do you think it could be worth it?

      1 Reply Last reply
      0
      • K Offline
        K Offline
        kepirok
        wrote last edited by
        #6

        Update: I managed to source another original carb, thanks guys for your help.

        1 Reply Last reply
        1
        • CalumC Calum

          Oh awesome! Congrats on the bike. I've had mine now 16 odd years now!

          Some great advice here, but I'll just chime in with some alternative idea for food for thought, but it doesn't negate the great advice we have here.

          Many years ago, I went down the TZR Belgarda route, which effectively ran a DT125RE engine, just modified porting. As a result, I ended up using the carb from that bike, which was a Dellorto VHSA 32mm carb. These are probably easier to find as they're used heavily in the scooter community.

          I've never had problems with that setup, but I am not convinced that the bike is that rapid (despite all the mods I've done), but maybe I just got used to it.

          K Offline
          K Offline
          kepirok
          wrote last edited by
          #7

          @Calum said:

          Oh awesome! Congrats on the bike. I've had mine now 16 odd years now!

          Some great advice here, but I'll just chime in with some alternative idea for food for thought, but it doesn't negate the great advice we have here.

          Many years ago, I went down the TZR Belgarda route, which effectively ran a DT125RE engine, just modified porting. As a result, I ended up using the carb from that bike, which was a Dellorto VHSA 32mm carb. These are probably easier to find as they're used heavily in the scooter community.

          I've never had problems with that setup, but I am not convinced that the bike is that rapid (despite all the mods I've done), but maybe I just got used to it.

          @calum is there more info somewhere regarding your setup? I am very curious regarding your experience of the TZR Belgrada "route" 🙂

          CalumC 1 Reply Last reply
          0
          • K kepirok

            @Calum said:

            Oh awesome! Congrats on the bike. I've had mine now 16 odd years now!

            Some great advice here, but I'll just chime in with some alternative idea for food for thought, but it doesn't negate the great advice we have here.

            Many years ago, I went down the TZR Belgarda route, which effectively ran a DT125RE engine, just modified porting. As a result, I ended up using the carb from that bike, which was a Dellorto VHSA 32mm carb. These are probably easier to find as they're used heavily in the scooter community.

            I've never had problems with that setup, but I am not convinced that the bike is that rapid (despite all the mods I've done), but maybe I just got used to it.

            @calum is there more info somewhere regarding your setup? I am very curious regarding your experience of the TZR Belgrada "route" 🙂

            CalumC Offline
            CalumC Offline
            Calum
            wrote last edited by
            #8

            @kepirok Probably lost to time now due to Photobucket and Imgur. But everything is documented on my build thread and I made a YouTube video of the build, so you can piece the two together there.

            https://dt125r.co.uk/topic/15/the-leviathan-project?_=1776597285894

            https://youtu.be/jZ1C_xCmqWg

            Always Originate, Never Pirate!

            K 1 Reply Last reply
            1
            • CalumC Calum

              @kepirok Probably lost to time now due to Photobucket and Imgur. But everything is documented on my build thread and I made a YouTube video of the build, so you can piece the two together there.

              https://dt125r.co.uk/topic/15/the-leviathan-project?_=1776597285894

              https://youtu.be/jZ1C_xCmqWg

              K Offline
              K Offline
              kepirok
              wrote last edited by
              #9

              @Calum said:

              @kepirok Probably lost to time now due to Photobucket and Imgur. But everything is documented on my build thread and I made a YouTube video of the build, so you can piece the two together there.

              https://dt125r.co.uk/topic/15/the-leviathan-project?_=1776597285894

              https://youtu.be/jZ1C_xCmqWg

              I see tons of works, creativity and precision. Great job. Do you still take it for a ride sometimes these days? @calum

              Regarding my original question on the carbs, I was able to source a second one and I can use the best bits of the two. Only thing is that both has the "power jet" super clogged in the bowl. Carb cleaner and ultrasonic cleaner both unsuccessful so far. Wires, tiny drills are the way to go or just more patience? I don't want to oversize the pipe

              HOTSHOT IIIH CalumC 2 Replies Last reply
              0
              • K kepirok

                @Calum said:

                @kepirok Probably lost to time now due to Photobucket and Imgur. But everything is documented on my build thread and I made a YouTube video of the build, so you can piece the two together there.

                https://dt125r.co.uk/topic/15/the-leviathan-project?_=1776597285894

                https://youtu.be/jZ1C_xCmqWg

                I see tons of works, creativity and precision. Great job. Do you still take it for a ride sometimes these days? @calum

                Regarding my original question on the carbs, I was able to source a second one and I can use the best bits of the two. Only thing is that both has the "power jet" super clogged in the bowl. Carb cleaner and ultrasonic cleaner both unsuccessful so far. Wires, tiny drills are the way to go or just more patience? I don't want to oversize the pipe

                HOTSHOT IIIH Offline
                HOTSHOT IIIH Offline
                HOTSHOT III
                wrote last edited by HOTSHOT III
                #10

                @kepirok I wouldn't use anything metallic like a piece of wire or drill bit to unblock the powerjet as it will be a very specific size. Did you try soaking it in alloy wheel cleaner? Check it out here from 6:52 onwards:

                https://www.youtube.com/watch?v=-1ETYWSJNnM

                K 1 Reply Last reply
                1
                • K kepirok

                  @Calum said:

                  @kepirok Probably lost to time now due to Photobucket and Imgur. But everything is documented on my build thread and I made a YouTube video of the build, so you can piece the two together there.

                  https://dt125r.co.uk/topic/15/the-leviathan-project?_=1776597285894

                  https://youtu.be/jZ1C_xCmqWg

                  I see tons of works, creativity and precision. Great job. Do you still take it for a ride sometimes these days? @calum

                  Regarding my original question on the carbs, I was able to source a second one and I can use the best bits of the two. Only thing is that both has the "power jet" super clogged in the bowl. Carb cleaner and ultrasonic cleaner both unsuccessful so far. Wires, tiny drills are the way to go or just more patience? I don't want to oversize the pipe

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote last edited by
                  #11

                  @kepirok I haven't ridden it in years! I do really want to though, it's a great bike 🙂

                  Always Originate, Never Pirate!

                  K 1 Reply Last reply
                  1
                  • HOTSHOT IIIH HOTSHOT III

                    @kepirok I wouldn't use anything metallic like a piece of wire or drill bit to unblock the powerjet as it will be a very specific size. Did you try soaking it in alloy wheel cleaner? Check it out here from 6:52 onwards:

                    https://www.youtube.com/watch?v=-1ETYWSJNnM

                    K Offline
                    K Offline
                    kepirok
                    wrote last edited by
                    #12

                    @HOTSHOT-III Thanks!! I tried this and it worked for one of the carbs. I guess the other one just needs some more time. After soaking them in alloy wheel cleaner, the carb cleaner helped to push out the debris (and some tiny maggots 😂 )

                    1 Reply Last reply
                    0
                    • CalumC Calum

                      @kepirok I haven't ridden it in years! I do really want to though, it's a great bike 🙂

                      K Offline
                      K Offline
                      kepirok
                      wrote last edited by
                      #13

                      @Calum I hope you can find some time for that. It must indeed ride great with all those mods 👍

                      1 Reply Last reply
                      0

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