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DT125R FORUM

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Sprockets

Scheduled Pinned Locked Moved General Discussion
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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
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        • 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
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                  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
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                          • 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
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                                  • 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

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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

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                                        • britshgigoloB Offline
                                          britshgigoloB Offline
                                          britshgigolo
                                          wrote on last edited by
                                          #22

                                          @Calum cant wait t get it fitted normally work dies off over christmas but not stoped yet hoping for a week off at some stage to get it all fitted

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