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DT125R FORUM

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  3. Welcome New Owners!
  4. Restricted power?

Restricted power?

Scheduled Pinned Locked Moved Welcome New Owners!
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  • B Offline
    B Offline
    Big Col
    wrote on last edited by
    #5

    Thanks guys. Nice to meet you. If anyone can give me a clue as to where the restrictor might be that would be great. Just to be clear, this is a 1989 model so suspect that there wont be any electronic restrictor of any kind fitted. Plan to take the head off to clean the power valve soon, as although it rotates freely, I wasn't able to get the 2 halves out previously. Think it's just stuck in there with carbon. Cheers

    NINJAN 1 Reply Last reply
    0
    • B Big Col

      Thanks guys. Nice to meet you. If anyone can give me a clue as to where the restrictor might be that would be great. Just to be clear, this is a 1989 model so suspect that there wont be any electronic restrictor of any kind fitted. Plan to take the head off to clean the power valve soon, as although it rotates freely, I wasn't able to get the 2 halves out previously. Think it's just stuck in there with carbon. Cheers

      NINJAN Offline
      NINJAN Offline
      NINJA
      wrote on last edited by NINJA
      #6

      @Big-Col There's a whole sub-section on Derestricting under the Tuning section, there's even a comprehensive guide too - enjoy!!! 😉

      SEDUCED BY THE DARK SIDE!!!

      1 Reply Last reply
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      • B Offline
        B Offline
        Big Col
        wrote on last edited by
        #7

        Great, thanks. Will take a look.

        1 Reply Last reply
        1
        • NINJAN NINJA

          @Big-Col Hi - You should easily be getting 70mph+ on your bike. Hell I'm 18st of pure rock solid prime English beef and I could get 80-85mph top speed on my DTR!!!
          :grinning_face_with_smiling_eyes: :smiling_face_with_open_mouth_closed_eyes: :smiling_face_with_open_mouth_cold_sweat: :face_with_tears_of_joy: 🤣

          Awaits @declan comment??? 😉

          DartyD Offline
          DartyD Offline
          Darty
          wrote on last edited by
          #8

          @NINJA Should look at getting a 250 instead...

          Keep it real

          NINJAN 1 Reply Last reply
          0
          • B Offline
            B Offline
            Big Col
            wrote on last edited by
            #9

            Funny you should say that. Getting a crm250 next (hopefully not a dirty word on this forum ;-). Like I said at the start, if it's already performing to its spec, then I'm happy to leave it as it is. Cheers

            1 Reply Last reply
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            • DartyD Darty

              @NINJA Should look at getting a 250 instead...

              NINJAN Offline
              NINJAN Offline
              NINJA
              wrote on last edited by NINJA
              #10

              @Darty Once I've got my A1 aka big boy license, a big fat SuMo is on my wish list!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

              SEDUCED BY THE DARK SIDE!!!

              DartyD CalumC 2 Replies Last reply
              0
              • NINJAN NINJA

                @Darty Once I've got my A1 aka big boy license, a big fat SuMo is on my wish list!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                DartyD Offline
                DartyD Offline
                Darty
                wrote on last edited by
                #11

                @NINJA @Big-Col Haha,👌 nice one lads.

                Keep it real

                1 Reply Last reply
                0
                • B Offline
                  B Offline
                  Big Col
                  wrote on last edited by
                  #12

                  Just read the article about the potential exhaust restriction on the older model. Will wip it off later today and take a look. Either of you guys have an opinion as to weather a heavily gunked up power valve would make much difference to performance, bearing in mind that mine is fixed fully open? Cheers

                  NINJAN 1 Reply Last reply
                  0
                  • B Big Col

                    Just read the article about the potential exhaust restriction on the older model. Will wip it off later today and take a look. Either of you guys have an opinion as to weather a heavily gunked up power valve would make much difference to performance, bearing in mind that mine is fixed fully open? Cheers

                    NINJAN Offline
                    NINJAN Offline
                    NINJA
                    wrote on last edited by
                    #13

                    @Big-Col If your PV is not set up correctly, damaged or faulty, then it will add restriction to your exhaust port.

                    SEDUCED BY THE DARK SIDE!!!

                    1 Reply Last reply
                    0
                    • B Offline
                      B Offline
                      Big Col
                      wrote on last edited by
                      #14

                      Hi. Just removed the restrictor in the exhaust manifold 😁 it is like another bike. Don't think I'll need a 250 at this rate! Absolutely awesome. However, now I have a new challenge. Fuelling! Felt like I was running out of fuel at the top of 5th and 6th gear. Not much in the fuel tank but enough if think. Need to double check. Now thinking I may need a larger main jet in the carb? Will search around in the forum. Sure to be something here.

                      CalumC 1 Reply Last reply
                      1
                      • B Big Col

                        Hi. Just removed the restrictor in the exhaust manifold 😁 it is like another bike. Don't think I'll need a 250 at this rate! Absolutely awesome. However, now I have a new challenge. Fuelling! Felt like I was running out of fuel at the top of 5th and 6th gear. Not much in the fuel tank but enough if think. Need to double check. Now thinking I may need a larger main jet in the carb? Will search around in the forum. Sure to be something here.

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

                        @Big-Col 210/240 main jet is standard on these engines for a DEP exhaust system

                        Always Originate, Never Pirate!

                        1 Reply Last reply
                        0
                        • B Offline
                          B Offline
                          Big Col
                          wrote on last edited by
                          #16

                          Thanks Calum. I took it out again this afternoon with more fuel in the tank. It happened again but then I remembered reading that I shouldn't be afraid to rev it hard at the top end. When keeping the revs high (8k+) it seems to run fine. Such good fun now, I can really appreciate what all the fuss is about these bikes. And that's coming from a guy who has a 959 Ducati! (Without wishing to sound like a t*oser)

                          NottsbikerN 1 Reply Last reply
                          1
                          • B Big Col

                            Thanks Calum. I took it out again this afternoon with more fuel in the tank. It happened again but then I remembered reading that I shouldn't be afraid to rev it hard at the top end. When keeping the revs high (8k+) it seems to run fine. Such good fun now, I can really appreciate what all the fuss is about these bikes. And that's coming from a guy who has a 959 Ducati! (Without wishing to sound like a t*oser)

                            NottsbikerN Offline
                            NottsbikerN Offline
                            Nottsbiker
                            wrote on last edited by
                            #17

                            @Big-Col no worries I've got a 1200 Multistrada to go with my DT200WR and TDR Belgarda

                            1 Reply Last reply
                            0
                            • B Offline
                              B Offline
                              Big Col
                              wrote on last edited by
                              #18

                              Nice bikes 👍

                              NottsbikerN 1 Reply Last reply
                              0
                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #19

                                And I've got a Railegh Maverick which is savage.

                                Always Originate, Never Pirate!

                                NINJAN 1 Reply Last reply
                                2
                                • CalumC Calum

                                  And I've got a Railegh Maverick which is savage.

                                  NINJAN Offline
                                  NINJAN Offline
                                  NINJA
                                  wrote on last edited by NINJA
                                  #20

                                  @Calum That's not as bad arse as my custom DMR!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                                  SEDUCED BY THE DARK SIDE!!!

                                  1 Reply Last reply
                                  0
                                  • NINJAN NINJA

                                    @Darty Once I've got my A1 aka big boy license, a big fat SuMo is on my wish list!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

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

                                    @NINJA said in Restricted power?:

                                    @Darty Once I've got my A1 aka big boy license, a big fat SuMo is on my wish list!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                                    I was confused at this, A1 is not your big boy license, it's your baby 125 license. You mean your A license.

                                    Always Originate, Never Pirate!

                                    NINJAN 1 Reply Last reply
                                    0
                                    • CalumC Calum

                                      @NINJA said in Restricted power?:

                                      @Darty Once I've got my A1 aka big boy license, a big fat SuMo is on my wish list!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                                      I was confused at this, A1 is not your big boy license, it's your baby 125 license. You mean your A license.

                                      NINJAN Offline
                                      NINJAN Offline
                                      NINJA
                                      wrote on last edited by
                                      #22

                                      @Calum Yep my bad, the SXV is my dream SuMo!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                                      SEDUCED BY THE DARK SIDE!!!

                                      1 Reply Last reply
                                      0
                                      • B Big Col

                                        Nice bikes 👍

                                        NottsbikerN Offline
                                        NottsbikerN Offline
                                        Nottsbiker
                                        wrote on last edited by
                                        #23

                                        @Big-Col tbh I'm looking forward to using the 200 more this year as the 1200 is good but the little wr is scruffy so it don't matter if it gets dropped off road. Got to laugh the Multistrada has an enduro setting - like that's going off road lol!

                                        CalumC 1 Reply Last reply
                                        2
                                        • NottsbikerN Nottsbiker

                                          @Big-Col tbh I'm looking forward to using the 200 more this year as the 1200 is good but the little wr is scruffy so it don't matter if it gets dropped off road. Got to laugh the Multistrada has an enduro setting - like that's going off road lol!

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #24

                                          @Nottsbiker I said the same thing about the Maverick, but low and behold it happens.

                                          Always Originate, Never Pirate!

                                          1 Reply Last reply
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