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DT125R FORUM

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  4. Dt 125r dyno

Dt 125r dyno

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  • J Offline
    J Offline
    jonne123
    wrote on last edited by
    #16

    What does tuning mean? Heres one with stock motor. Maybe pipe? https://youtu.be/bAzNrjtCfps

    CalumC 1 Reply Last reply
    0
    • J jonne123

      What does tuning mean? Heres one with stock motor. Maybe pipe? https://youtu.be/bAzNrjtCfps

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #17

      @jonne123 It means it's not what it was out the factory.

      That DTR in the video is heavily modified. It doesn't even have an airbox.

      Always Originate, Never Pirate!

      1 Reply Last reply
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      • J Offline
        J Offline
        jonne123
        wrote on last edited by
        #18

        Shoot. What i need to do to get more power? I have the better head, giannelli exhaust, carbon reeds.

        CalumC 1 Reply Last reply
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        • J jonne123

          Shoot. What i need to do to get more power? I have the better head, giannelli exhaust, carbon reeds.

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #19

          @jonne123 Probably about it unless you want a headache.

          Always Originate, Never Pirate!

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          • J Offline
            J Offline
            jonne123
            wrote on last edited by
            #20

            What i need to do to get 25hp? And thats its grazy that yamaha wr 125x has higher tuning stage and more power tham my 2 stroke

            CalumC 1 Reply Last reply
            0
            • J jonne123

              What i need to do to get 25hp? And thats its grazy that yamaha wr 125x has higher tuning stage and more power tham my 2 stroke

              CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #21

              @jonne123 How is crazy?

              The DTR uses an engine designed in the 80s and wasn't changed in its entire lifetime.

              The WRX is a modern four stroke engine and you're comparing it against something made 30+ years ago.

              The two stroke engine hasn't been developed massively for a long time. Four strokes have come on leaps and bounds.

              Always Originate, Never Pirate!

              1 Reply Last reply
              1
              • J Offline
                J Offline
                jonne123
                wrote on last edited by
                #22

                Now im sad i shouldnt dynoed the thing

                CalumC 1 Reply Last reply
                0
                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #23

                  @jonne123 To get 25hp out of the stock DTR motor? I wouldn't even know. Port the barrel, increase the compression ratio, correct the squish band. Widen the exhaust port. Use an aftermarket ignition system. Use an underslung exhaust. bigger carb, uprate the air intake. Lighten the flywheel.

                  Always Originate, Never Pirate!

                  1 Reply Last reply
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                  • J Offline
                    J Offline
                    jonne123
                    wrote on last edited by
                    #24

                    So im simple terms its easier to buy another bike.

                    clawsC 1 Reply Last reply
                    0
                    • J jonne123

                      Now im sad i shouldnt dynoed the thing

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #25

                      @jonne123 Not really, that sort of power at the wheel is good. And is still faster than the WRX. The WRX will be making that power for a very short time at the upper range, where as the DTR produces max power at 7K and revs to 12k.

                      The two stroke engine produces more power end of. Then it's just a case of how you tune it as to where that power is made.

                      My RS easily trumps my DT for power. But you really have to be in the powerband to use it. The DTR I can ride at low RPMs happily.

                      Always Originate, Never Pirate!

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                      • J Offline
                        J Offline
                        jonne123
                        wrote on last edited by
                        #26

                        They dynoed honda cr and it made 27hp at that dyno.

                        1 Reply Last reply
                        0
                        • CalumC Offline
                          CalumC Offline
                          Calum
                          wrote on last edited by
                          #27

                          That's a motorcross bike! You can't compare a full blown motorcross bike designed to last 40hrs of use to a bike that is designed to last 4000hrs!

                          Always Originate, Never Pirate!

                          1 Reply Last reply
                          0
                          • J Offline
                            J Offline
                            jonne123
                            wrote on last edited by
                            #28

                            Well true. but what is realistic top speed from dtr

                            A 1 Reply Last reply
                            0
                            • CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #29

                              Speed and power are not the same. Throw the DTR off a cliff and the top speed is going to be quite high.

                              Always Originate, Never Pirate!

                              1 Reply Last reply
                              0
                              • J Offline
                                J Offline
                                jonne123
                                wrote on last edited by
                                #30

                                I understand. Is it like 120?

                                1 Reply Last reply
                                0
                                • CalumC Offline
                                  CalumC Offline
                                  Calum
                                  wrote on last edited by
                                  #31

                                  KMH? Yeah that sounds about right.

                                  Always Originate, Never Pirate!

                                  1 Reply Last reply
                                  0
                                  • J Offline
                                    J Offline
                                    jonne123
                                    wrote on last edited by
                                    #32

                                    No i meant mph 😂

                                    CalumC 1 Reply Last reply
                                    0
                                    • J jonne123

                                      No i meant mph 😂

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

                                      @jonne123 What! 120MPH out of a 125? A GP bike maybe, but not a road going bike.

                                      Always Originate, Never Pirate!

                                      1 Reply Last reply
                                      0
                                      • J Offline
                                        J Offline
                                        jonne123
                                        wrote on last edited by
                                        #34

                                        Jk i know that 170 is very good for some gagiva mito

                                        CalumC 1 Reply Last reply
                                        0
                                        • J jonne123

                                          Jk i know that 170 is very good for some gagiva mito

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by Calum
                                          #35

                                          @jonne123 170KMH is absolutely pushing it.

                                          My brother has a mito and we were going down some private road and he said the speedo read 120MPH. I said, funny that mine read 90 🤣

                                          But his was standard with an exhaust and 28mm carb.

                                          My RS will touch that sort of speed but it has every mod conceivable on it. But you could touch that speed with a light rider.

                                          Always Originate, Never Pirate!

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