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DT125R FORUM

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Sprockets

Scheduled Pinned Locked Moved General Discussion
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  • CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #2

    Mine on stock used to indicate 80.

    Always Originate, Never Pirate!

    A 1 Reply Last reply
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    • CalumC Calum

      Mine on stock used to indicate 80.

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

      @Calum mine is really struggling lol 70 down hill really screaming it to the point I thought it was gonna pop

      CalumC 1 Reply Last reply
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      • A andrewj1680

        @Calum mine is really struggling lol 70 down hill really screaming it to the point I thought it was gonna pop

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

        @andrewj1680 Is the powervalve set up properly?

        Always Originate, Never Pirate!

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        • CalumC Calum

          @andrewj1680 Is the powervalve set up properly?

          A Offline
          A Offline
          andrewj1680
          wrote on last edited by
          #5

          @Calum it's a early bike so not on cables so I've pegged the power valve fully open which I've done on a few now and always had good results, the engine has done less than 4500 miles all its life I'm wondering if it just needs a few good hard runs to free things up? Could be wrong. As far as I'm aware it only had the exhaust restrictor, my zeeltronic should be here next week if all goes well but I'm sure the 3nc-00 cdi is unrestricted so possibly won't make a lot of difference

          CalumC 1 Reply Last reply
          0
          • A andrewj1680

            @Calum it's a early bike so not on cables so I've pegged the power valve fully open which I've done on a few now and always had good results, the engine has done less than 4500 miles all its life I'm wondering if it just needs a few good hard runs to free things up? Could be wrong. As far as I'm aware it only had the exhaust restrictor, my zeeltronic should be here next week if all goes well but I'm sure the 3nc-00 cdi is unrestricted so possibly won't make a lot of difference

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #6

            @andrewj1680 You should be pleasantly surprised. It's not a restriction but you can have a far more aggressive map.

            What code is you cylinder head?

            Always Originate, Never Pirate!

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            • CalumC Calum

              @andrewj1680 You should be pleasantly surprised. It's not a restriction but you can have a far more aggressive map.

              What code is you cylinder head?

              A Offline
              A Offline
              andrewj1680
              wrote on last edited by
              #7

              @Calum it's running the 3mb00 cylinder I'm considering putting a servo on it, the bike runs faultless doesn't miss a beat just a bit on the slow side

              CalumC 1 Reply Last reply
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              • A andrewj1680

                @Calum it's running the 3mb00 cylinder I'm considering putting a servo on it, the bike runs faultless doesn't miss a beat just a bit on the slow side

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #8

                @andrewj1680 Yes, but what is the code on the head?

                Always Originate, Never Pirate!

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                • G Offline
                  G Offline
                  gareth_iowc
                  wrote on last edited by
                  #9

                  My stock dtr would top out at 60 on stock brackets. That wasn't quite max revs but with all the noise I didn't dare

                  DT125R 2000
                  DRZ400 2006
                  Golf Mk3 20v Turbo 1996

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                  • CalumC Calum

                    @andrewj1680 Yes, but what is the code on the head?

                    A Offline
                    A Offline
                    andrewj1680
                    wrote on last edited by
                    #10

                    @Calum sorry calum my bad, the cylinder head is 3bn y-4

                    CalumC 1 Reply Last reply
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                    • A andrewj1680

                      @Calum sorry calum my bad, the cylinder head is 3bn y-4

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #11

                      @andrewj1680 Yeah that head is restrictive.

                      Either derestrict the head, or grab a 3MB head and you will see noticeable gains.

                      Always Originate, Never Pirate!

                      A 1 Reply Last reply
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                      • CalumC Calum

                        @andrewj1680 Yeah that head is restrictive.

                        Either derestrict the head, or grab a 3MB head and you will see noticeable gains.

                        A Offline
                        A Offline
                        andrewj1680
                        wrote on last edited by
                        #12

                        @Calum thanks again, is modding it just on the squish band or is there more to it than that?

                        CalumC 1 Reply Last reply
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                        • A andrewj1680

                          @Calum thanks again, is modding it just on the squish band or is there more to it than that?

                          CalumC Offline
                          CalumC Offline
                          Calum
                          wrote on last edited by
                          #13

                          @andrewj1680 It's a specialist job I'm afraid.

                          It's more complicated than what I know.

                          Mick Abbey did my head for about £35 a few years back, I'm sure someone here had their 3BN done recently. Or you can pick up a 3MB Head, but they seem to be getting harder to find these days...

                          Always Originate, Never Pirate!

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                          • britshgigoloB Offline
                            britshgigoloB Offline
                            britshgigolo
                            wrote on last edited by
                            #14

                            i had mine done by mick abbey last month was £35 turnaround was 3 days not had time to fit it yet as work is still manic

                            CalumC 1 Reply Last reply
                            1
                            • britshgigoloB britshgigolo

                              i had mine done by mick abbey last month was £35 turnaround was 3 days not had time to fit it yet as work is still manic

                              CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #15

                              @britshgigolo Should upload a photo so we can have a ganders 😄

                              Always Originate, Never Pirate!

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                              • A Offline
                                A Offline
                                andrewj1680
                                wrote on last edited by
                                #16

                                Ideal probably cheaper to get it done than get a replacement as I can't seem to source 1 and fowlers want £325+vat 😂😂 not the price I wanna pay as I plan a 200 build during the winter anyway

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

                                  I remember once upon a time, they were easy to get ahold of.

                                  If you give it to Mick Abbey, you'll get better than OEM as he tunes it for performance anyway.

                                  Always Originate, Never Pirate!

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                                  • britshgigoloB Offline
                                    britshgigoloB Offline
                                    britshgigolo
                                    wrote on last edited by
                                    #18

                                    sorry could not find the pictures on the comp so got some new ones 0_1488925094432_reprofiled head 1.jpg 0_1488925113497_reprofiled head 2.jpg

                                    CalumC 1 Reply Last reply
                                    1
                                    • britshgigoloB britshgigolo

                                      sorry could not find the pictures on the comp so got some new ones 0_1488925094432_reprofiled head 1.jpg 0_1488925113497_reprofiled head 2.jpg

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

                                      @britshgigolo And this was a 3BN?

                                      Wow that looks wicked now!

                                      Really nice squish band. That's going to make a nice difference.

                                      Always Originate, Never Pirate!

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                                      • A Offline
                                        A Offline
                                        andrewj1680
                                        wrote on last edited by
                                        #20

                                        Thanks lads I've just messaged him to do what he can with both the cylinder and the head possibly just get the bike to him to fit and sort the zeeltronic ignition too

                                        1 Reply Last reply
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                                        • britshgigoloB Offline
                                          britshgigoloB Offline
                                          britshgigolo
                                          wrote on last edited by
                                          #21

                                          yes with the squish band seem to have lost the original photos where i had them side by side

                                          1 Reply Last reply
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