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DT125R FORUM

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  2. Tuning
  3. Top End
  4. pinning power valve parts needed

pinning power valve parts needed

Scheduled Pinned Locked Moved Top End
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  • ZrakoZ Offline
    ZrakoZ Offline
    Zrako
    wrote on last edited by
    #7

    Post a pic of side of your barrel where the valve is . Dont you have pulley housing at all?

    You can add it directly here by clicking on the small cloud with arrow inside it . Much easier. 😉

    1979 Jawa Mustang 50
    2003 Gilera DNA 125 R.I.P
    2015 Keeway TX 125 SM
    2006 Yamaha DT 125 X

    D 1 Reply Last reply
    0
    • D dan28

      So just to confirm I need the plastic pulley an the housing the cables go into
      So it can be pinned

      Is there another way of doing it as I m sure my 89 barrel had a cap either side an no pulley or cable housing

      A Offline
      A Offline
      andrewj1680
      wrote on last edited by
      #8

      @dan28 I have the early version the same as you if you pull the power valve cover off the left side of the cylinder there is a sleeve that slots over the top of the powervalve itself when you pull the sleave out there is a pin in it basically turn the valve 180 and put the sleeve back but insure you turn the sleeve the pin will need to locate in the top now rather than the bottom as long as you still have the pin in the collar you can't get it wrong however I have seen this pin removed where people without the know how have tried to open the power Valve and snapped it off

      D 1 Reply Last reply
      1
      • CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by Mightyman
        #9

        I don't have any experience with the non-servo operated valves so I couldn't say.

        Might have halve a chance if you throw up some photos.

        Always Originate, Never Pirate!

        1 Reply Last reply
        0
        • A Offline
          A Offline
          andrewj1680
          wrote on last edited by
          #10

          0_1492011942118_20170412_164057.jpg 0_1492011960496_20170412_164107.jpg 0_1492011975514_20170412_164342.jpg 0_1492011994455_20170412_164413.jpg

          1 Reply Last reply
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          • CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by Calum
            #11

            Nice, yeah no idea.

            I'd buy the servo operated gubbins and pin it that way.

            or go for something like this:
            http://www.ebay.co.uk/itm/Yamaha-TZR-DT-125-manual-power-valve-adjuster-/122432325847?hash=item1c818908d7:g:aFYAAOSwq5pXQF9E

            Always Originate, Never Pirate!

            1 Reply Last reply
            0
            • Louis-DT-WRL Offline
              Louis-DT-WRL Offline
              Louis-DT-WR
              wrote on last edited by
              #12

              Like callum says, use a servo. When one PV cable snapped, I pinned mine open until the new cable came. Makes it really loud and no bottom end power

              1 Reply Last reply
              0
              • ZrakoZ Zrako

                Post a pic of side of your barrel where the valve is . Dont you have pulley housing at all?

                You can add it directly here by clicking on the small cloud with arrow inside it . Much easier. 😉

                D Offline
                D Offline
                dan28
                wrote on last edited by
                #13

                @Zrako said in pinning power valve parts needed:

                Post a pic of side of your barrel where the valve is . Dont you have pulley housing at all?

                You can add it directly here by clicking on the small cloud with arrow inside it . Much easier. 😉 I sold my 89 barrel that had the caps on it
                An I also sold the 05 barrel that had the housing on
                I sold them to buy the tdr r P stamped barrel an head off scrim
                Now the only caps I have are the ones in the photo

                1 Reply Last reply
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                • A andrewj1680

                  @dan28 I have the early version the same as you if you pull the power valve cover off the left side of the cylinder there is a sleeve that slots over the top of the powervalve itself when you pull the sleave out there is a pin in it basically turn the valve 180 and put the sleeve back but insure you turn the sleeve the pin will need to locate in the top now rather than the bottom as long as you still have the pin in the collar you can't get it wrong however I have seen this pin removed where people without the know how have tried to open the power Valve and snapped it off

                  D Offline
                  D Offline
                  dan28
                  wrote on last edited by
                  #14

                  @andrewj1680 said in pinning power valve parts needed:

                  @dan28 I have the early version the same as you if you pull the power valve cover off the left side of the cylinder there is a sleeve that slots over the top of the powervalve itself when you pull the sleave out there is a pin in it basically turn the valve 180 and put the sleeve back but insure you turn the sleeve the pin will need to locate in the top now rather than the bottom as long as you still have the pin in the collar you can't get it wrong however I have seen this pin removed where people without the know how have tried to open the power Valve and snapped it off

                  Any chance you can post of photo of your cap

                  A 1 Reply Last reply
                  0
                  • D dan28

                    @andrewj1680 said in pinning power valve parts needed:

                    @dan28 I have the early version the same as you if you pull the power valve cover off the left side of the cylinder there is a sleeve that slots over the top of the powervalve itself when you pull the sleave out there is a pin in it basically turn the valve 180 and put the sleeve back but insure you turn the sleeve the pin will need to locate in the top now rather than the bottom as long as you still have the pin in the collar you can't get it wrong however I have seen this pin removed where people without the know how have tried to open the power Valve and snapped it off

                    Any chance you can post of photo of your cap

                    A Offline
                    A Offline
                    andrewj1680
                    wrote on last edited by
                    #15

                    @dan28 the cap is included in the pics I've posted mate the cap has the pin in the base which then locks into the sleeve the sleeve slips over the power valve and mine doesn't spin inside it then the cap locks in place through the 2 holes where it bolts to the cylinder holding everything in place

                    1 Reply Last reply
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                    • D Offline
                      D Offline
                      dan28
                      wrote on last edited by
                      #16

                      sorry Andrew I didn't see those photos on my phone

                      those parts look like mine 🙂
                      I have the cap although the pin is missing
                      an I have the sleeve
                      am supposed to remove the bush with the orange rubber so the sleeve can slide on to the pv

                      here are photos to explain
                      0_1492031283388_12042017377.jpg

                      0_1492031308965_12042017379.jpg

                      0_1492031334777_12042017378.jpg

                      D 1 Reply Last reply
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                      • D dan28

                        sorry Andrew I didn't see those photos on my phone

                        those parts look like mine 🙂
                        I have the cap although the pin is missing
                        an I have the sleeve
                        am supposed to remove the bush with the orange rubber so the sleeve can slide on to the pv

                        here are photos to explain
                        0_1492031283388_12042017377.jpg

                        0_1492031308965_12042017379.jpg

                        0_1492031334777_12042017378.jpg

                        D Offline
                        D Offline
                        dan28
                        wrote on last edited by
                        #17

                        @dan28
                        that cloud / pic attach tool is awesome thanks calum

                        A 1 Reply Last reply
                        1
                        • D dan28

                          @dan28
                          that cloud / pic attach tool is awesome thanks calum

                          A Offline
                          A Offline
                          andrewj1680
                          wrote on last edited by
                          #18

                          @dan28 turn that sleeve the other way mate and slot it over the valve

                          1 Reply Last reply
                          0
                          • A Offline
                            A Offline
                            andrewj1680
                            wrote on last edited by
                            #19

                            I'm sure that is the wrong power valve mate mine sits inside that sleeve where as looking at yours it won't

                            1 Reply Last reply
                            0
                            • A Offline
                              A Offline
                              andrewj1680
                              wrote on last edited by
                              #20

                              0_1492034675179_s-l300.jpg
                              Looks like you have this 1

                              1 Reply Last reply
                              1
                              • A Offline
                                A Offline
                                andrewj1680
                                wrote on last edited by
                                #21

                                0_1492034725061_s-l300-1.jpg
                                You should have this 1

                                1 Reply Last reply
                                0
                                • CalumC Offline
                                  CalumC Offline
                                  Calum
                                  wrote on last edited by
                                  #22

                                  Literally eitherfit the servo operated cable pulley and pin it, or buy that item I linked and pin it, or better still fit the servo.

                                  Always Originate, Never Pirate!

                                  1 Reply Last reply
                                  1
                                  • A Offline
                                    A Offline
                                    andrewj1680
                                    wrote on last edited by
                                    #23

                                    You could always just stick a big washer behind the bolt that runs through the middle you can lock it off that way which is what I have ended up doing today as since having port work and the power valve modded it kept moving a little over fully open

                                    D 1 Reply Last reply
                                    0
                                    • A andrewj1680

                                      You could always just stick a big washer behind the bolt that runs through the middle you can lock it off that way which is what I have ended up doing today as since having port work and the power valve modded it kept moving a little over fully open

                                      D Offline
                                      D Offline
                                      dan28
                                      wrote on last edited by
                                      #24

                                      @andrewj1680 said in pinning power valve parts needed:

                                      You could always just stick a big washer behind the bolt that runs through the middle you can lock it off that way which is what I have ended up doing today as since having port work and the power valve modded it kept moving a little over fully open

                                      I ve bought the servo kit I can use the standard parts to pin it now
                                      or if I can get the servo to fit my frame I will use it
                                      (the dt engine is in a different frame ) its gonna be a mission to get the servo to fit I wanted to mount it under the tank but the cables are too short
                                      not sure it will be worth the hassle

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