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DT125R FORUM

  1. Home
  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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  • D Offline
    D Offline
    dan28
    wrote on last edited by
    #5

    That makes more sense now
    Only I don't have that part no wonder I couldn't figure it out

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    • D Offline
      D Offline
      dan28
      wrote on last edited by
      #6

      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 1 Reply Last reply
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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
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        • 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
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          • 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!

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            • 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

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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!

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                • 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

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                  • 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

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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
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                      • 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

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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

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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

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                              • 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

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                                0
                                • A Offline
                                  A Offline
                                  andrewj1680
                                  wrote on last edited by
                                  #20

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

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

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

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                                    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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