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DT125R FORUM

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  4. Took head off after breakdown

Took head off after breakdown

Scheduled Pinned Locked Moved Engine
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  • ZrakoZ Zrako

    Well , here we go again . 2nd rebuild . Now with new crank bearings and seals 🙄 , new piston and rings , new - used clutch , removed kickstart and got new used stay for the sprag clutch and installed starter motor, fresh gear oil.

    https://youtu.be/b2MZ359Ag3g

    Here is what it sounds like . First start was surprisingly smooth ,was idling bit higher so turned it down and bled autolube . Feel strange as it was maybe too good to be true lol .
    Let me know what you think about the sound. Havent jump on it yet btw.

    NINJAN Offline
    NINJAN Offline
    NINJA
    wrote on last edited by
    #19

    @Zrako Sounds like a 4 stroke with the airbox lid off. LOL

    Great job tho!!! 👍

    SEDUCED BY THE DARK SIDE!!!

    1 Reply Last reply
    1
    • ZrakoZ Offline
      ZrakoZ Offline
      Zrako
      wrote on last edited by
      #20

      0_1500242402424_20170716_225845.jpg

      0_1500242412618_20170716_225908.jpg

      Well , brand new iridium br9eix after like 30 minutes idling. First 5 minutes was bleeding oil pump. Doesnt smoke too much . 🤕

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

      CalumC 1 Reply Last reply
      0
      • ZrakoZ Zrako

        0_1500242402424_20170716_225845.jpg

        0_1500242412618_20170716_225908.jpg

        Well , brand new iridium br9eix after like 30 minutes idling. First 5 minutes was bleeding oil pump. Doesnt smoke too much . 🤕

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

        @Zrako A bit rich, but you won't really tell unless you do a plug chop.

        Always Originate, Never Pirate!

        1 Reply Last reply
        0
        • ZrakoZ Offline
          ZrakoZ Offline
          Zrako
          wrote on last edited by
          #22

          @Calum what exactly does that plug chop is ? Never heard that before

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

          CalumC 1 Reply Last reply
          0
          • ZrakoZ Zrako

            @Calum what exactly does that plug chop is ? Never heard that before

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #23

            @Zrako http://kawtriple.com/mraxl/carb/plugchop.htm

            https://www.google.co.uk/search?q=plug+chop&ie=utf-8&oe=utf-8&client=firefox-b-ab&gfe_rd=cr&ei=1eVrWaveI6fA8gf04rnACA

            Google my friend.

            Always Originate, Never Pirate!

            ZrakoZ 1 Reply Last reply
            1
            • CalumC Calum

              @Zrako http://kawtriple.com/mraxl/carb/plugchop.htm

              https://www.google.co.uk/search?q=plug+chop&ie=utf-8&oe=utf-8&client=firefox-b-ab&gfe_rd=cr&ei=1eVrWaveI6fA8gf04rnACA

              Google my friend.

              ZrakoZ Offline
              ZrakoZ Offline
              Zrako
              wrote on last edited by
              #24

              @Calum whoa . I need to get some standard plugs then . Thanks for help again

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

              declanD 1 Reply Last reply
              0
              • ZrakoZ Zrako

                @Calum whoa . I need to get some standard plugs then . Thanks for help again

                declanD Offline
                declanD Offline
                declan
                wrote on last edited by
                #25

                @Zrako my bikes clog up on idle give it a nice few revs to clear it out

                1 Reply Last reply
                1
                • MightymanM Offline
                  MightymanM Offline
                  Mightyman
                  wrote on last edited by
                  #26

                  Wow I have never actually read this up before. Always assumed a "plug chop" was running the bike for couple minutes, then visually inspecting the plug. Seems like a lot of effort / plug money to get it running perfect, but obviously worth it. Nothing better than a 2 stroke motor purring over perfectly. 👍

                  TDR 125 - 2001

                  1 Reply Last reply
                  1
                  • CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #27

                    @Mightyman and you know what they say about assumptions.

                    Oh my bad, seriously I thought it was common knowledge.

                    Always Originate, Never Pirate!

                    1 Reply Last reply
                    2
                    • ZrakoZ Offline
                      ZrakoZ Offline
                      Zrako
                      wrote on last edited by
                      #28

                      Completed the bike again 100% , 10 minutes warm up , took it on the street . Hardly powerband , valve moving properly but struggled . Tried to go between the gears hardly 3rd only sometimes . Impossible to shift , only with heel 😑. Took it apart again and tried to figure out whats going on. I think this is the problem.

                      https://youtu.be/xqXsdSxaTwQ

                      I think the sping is slacked. Found picture in the haynes

                      0_1500407224713_20170718_204534.jpg

                      Did anyone experienced something like this?

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

                      1 Reply Last reply
                      0
                      • A Offline
                        A Offline
                        andrewj1680
                        wrote on last edited by
                        #29

                        My spring doesnt come up through the holes like yours does, the legs sit underneath the same as it does in the Haynes manual image

                        1 Reply Last reply
                        1
                        • ZrakoZ Offline
                          ZrakoZ Offline
                          Zrako
                          wrote on last edited by
                          #30

                          Cant find the spring for sale . Just the new shaft 😓

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

                          1 Reply Last reply
                          0
                          • A Offline
                            A Offline
                            andrewj1680
                            wrote on last edited by
                            #31

                            I dont think you need a new spring you need to push the feet of the spring back through, the spring is pretty slack on all ive seen but not had any gear selection problems

                            1 Reply Last reply
                            0
                            • A Offline
                              A Offline
                              andrewj1680
                              wrote on last edited by
                              #32

                              0_1500416320929_20170718_231423.jpg 0_1500416356105_20170718_231411.jpg 0_1500416380228_20170718_231253.jpg 0_1500416405701_20170718_231238.jpg

                              1 Reply Last reply
                              0
                              • A Offline
                                A Offline
                                andrewj1680
                                wrote on last edited by
                                #33

                                Worse case its only £41+vat complete new

                                1 Reply Last reply
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