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    2002 dt125r rev limit??

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    • M
      Mitch_350z last edited by

      Hi all I've recently purchased my 2nd dtr which is fairly standard other than a dep silencer, after changing all crankcase bearings finally got to ride it 😂 it only seems to rev to 7500rpm?? It seems to back off after this my other dtr was also a 2002 and didn't have this problem?? Any ideas what the cause could be??
      Cheers Mitch

      1 Reply Last reply Reply Quote 0
      • A
        AnthonyPearson last edited by

        Sounds like the bike is still restricted.

        declan 1 Reply Last reply Reply Quote 0
        • M
          Mitch_350z last edited by

          Oh right?? How do I go about derestriction as I've read about a black and green wire behind the headlight but can't seem to find it??
          Cheers Mitch

          1 Reply Last reply Reply Quote 0
          • declan
            declan @AnthonyPearson last edited by

            @anthonypearson I'd say pv not opening mine did it cause of a dead battery the other day and it was horrible like a cheap 4 stroke make sure it's opening bud

            1 Reply Last reply Reply Quote 1
            • M
              Mitch_350z last edited by

              Ok mate I'll take a the cover off and have a look
              Cheers Mitch

              1 Reply Last reply Reply Quote 0
              • Calum
                Calum last edited by

                It's the powervalve bud.

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                • M
                  Mitch_350z last edited by

                  What do I need to do?? I've read assorted to do with a reed valve switch and powervalve wires??
                  Cheers Mitch

                  Calum 1 Reply Last reply Reply Quote 0
                  • Calum
                    Calum @Mitch_350z last edited by

                    @mitch_350z quickest, dirtiest solution would be to diwconnect the servo, pin the valve so it is flush with the exhaust port, then ride it.

                    M 1 Reply Last reply Reply Quote 0
                    • M
                      Mitch_350z @Calum last edited by

                      @calum oh right is there any way I could solve it without loosing bottom end power??
                      Cheers Mitch

                      Calum 1 Reply Last reply Reply Quote 0
                      • Calum
                        Calum @Mitch_350z last edited by

                        @mitch_350z Yeah fix the servo. But doing this will help to identify the faulty component.

                        declan M 2 Replies Last reply Reply Quote 0
                        • declan
                          declan @Calum last edited by

                          @ does it do the cleaning cycle?

                          M 1 Reply Last reply Reply Quote 0
                          • M
                            Mitch_350z @Calum last edited by

                            @calum I don't think there is a fault with the servo?? It works perfectly fine upto around 7000rpm??

                            Calum 1 Reply Last reply Reply Quote 0
                            • M
                              Mitch_350z @declan last edited by

                              @declan yeah it does the cleaning cycle as normal so seems to be working

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                              • Calum
                                Calum @Mitch_350z last edited by

                                @mitch_350z It shouldn't close at 7000 mate, not even restricted. Restricted dtre's close at 10.

                                Sounds to me like it is simply not setup right. Closing when it should be opening.

                                M 1 Reply Last reply Reply Quote 0
                                • M
                                  Mitch_350z @Calum last edited by

                                  @calum I've set the pv flush with the top of the exhaust port it's a little off the 'u' and hole behind the cover but is spot on?? I'm running out of ideas??
                                  Cheers Mitch

                                  declan 1 Reply Last reply Reply Quote 0
                                  • declan
                                    declan @Mitch_350z last edited by

                                    @Calum wait a min buddy are you telling me my dt is still restricted it redlines around 8.5?

                                    Calum 1 Reply Last reply Reply Quote 0
                                    • Calum
                                      Calum @declan last edited by

                                      @declan Yeah should pull to around 12 mate.

                                      @Mitch_350z So long as its flush with the exhaust port that's the main thing.

                                      How does it ride now?

                                      declan M 2 Replies Last reply Reply Quote 0
                                      • declan
                                        declan @Calum last edited by

                                        @calum I know this is the most asked question but I've not seen no reed switch do you want me to start a new thread?

                                        Calum 1 Reply Last reply Reply Quote 0
                                        • Calum
                                          Calum @declan last edited by

                                          @declan Open up a new thread bud please.

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                                          • M
                                            Mitch_350z @Calum last edited by

                                            @calum it seems to ride better when pinned but still only does 65 max and doesn't pull too well in 6th?? Struggles a little to rev up to but don't know If this is because of the pinning??

                                            Calum 1 Reply Last reply Reply Quote 0
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