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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
1.1k Posts 26 Posters 207.7k Views
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  • S SpookDog
    5 Jan 2024, 15:07

    Hey! At least I get to fit the blaster bearing this time! 🙂 …

    M Offline
    M Offline
    MadGyver
    wrote on 5 Jan 2024, 16:36 last edited by
    #905

    @SpookDog said in So Close!...:

    Hey! At least I get to fit the blaster bearing this time! 🙂 …

    Don't forget to file the inside of the piston as I've mentioned on another post.

    I need my tools and a pile of junk.....

    S 1 Reply Last reply 5 Jan 2024, 17:11
    0
    • M MadGyver
      5 Jan 2024, 16:36

      @SpookDog said in So Close!...:

      Hey! At least I get to fit the blaster bearing this time! 🙂 …

      Don't forget to file the inside of the piston as I've mentioned on another post.

      S Offline
      S Offline
      SpookDog
      wrote on 5 Jan 2024, 17:11 last edited by
      #906

      @MadGyver

      Ha! I was just going to ask you if it was the piston or the LE bearing!…

      M 1 Reply Last reply 5 Jan 2024, 18:08
      0
      • S SpookDog
        5 Jan 2024, 17:11

        @MadGyver

        Ha! I was just going to ask you if it was the piston or the LE bearing!…

        M Offline
        M Offline
        MadGyver
        wrote on 5 Jan 2024, 18:08 last edited by
        #907

        @SpookDog said in So Close!...:

        @MadGyver

        Ha! I was just going to ask you if it was the piston or the LE bearing!…
        File each side of the piston,the bearing must drop and have a little play.
        I believe 0,5mm or 0,75mm of each side will do,measure your bearing because they are not all the same.
        alt text

        I need my tools and a pile of junk.....

        S 2 Replies Last reply 5 Jan 2024, 19:27
        0
        • M MadGyver
          5 Jan 2024, 18:08

          @SpookDog said in So Close!...:

          @MadGyver

          Ha! I was just going to ask you if it was the piston or the LE bearing!…
          File each side of the piston,the bearing must drop and have a little play.
          I believe 0,5mm or 0,75mm of each side will do,measure your bearing because they are not all the same.
          alt text

          S Offline
          S Offline
          SpookDog
          wrote on 5 Jan 2024, 19:27 last edited by SpookDog 1 May 2024, 19:32
          #908

          @MadGyver
          Why thank you Sir!…

          I did get round to doing some things today, once I stopped feeling sorry for myself:

          alt text

          Lapped it smooth and ‘all over’ even as I could with what I have to hand…

          alt text

          I always hate putting on a top end with the engine in-frame, but what can you do?
          March or die! Can’t give up either way…

          I had to remove the side cover and rotor so I could remove the stator, all so I could replace and tighten the coolant pipe-mount/engine-bolt! I did manage to torque up the stator nut this time because I could lock the crank via the little/small end…

          🤞

          1 Reply Last reply
          0
          • M MadGyver
            5 Jan 2024, 18:08

            @SpookDog said in So Close!...:

            @MadGyver

            Ha! I was just going to ask you if it was the piston or the LE bearing!…
            File each side of the piston,the bearing must drop and have a little play.
            I believe 0,5mm or 0,75mm of each side will do,measure your bearing because they are not all the same.
            alt text

            S Offline
            S Offline
            SpookDog
            wrote on 5 Jan 2024, 19:57 last edited by SpookDog 1 May 2024, 19:58
            #909

            @MadGyver

            I forgot to ask: Does the Athena kit give the kickstart a more ‘compression’ feel than the standard? I used to be able to turn it over by hand on the kickstart…

            M 1 Reply Last reply 5 Jan 2024, 20:19
            0
            • C Offline
              C Offline
              Calum
              wrote on 5 Jan 2024, 20:02 last edited by
              #910

              It'll go back to normal as soon as you fire it up 🤣

              Always Originate, Never Pirate!

              S 1 Reply Last reply 5 Jan 2024, 20:12
              0
              • C Calum
                5 Jan 2024, 20:02

                It'll go back to normal as soon as you fire it up 🤣

                S Offline
                S Offline
                SpookDog
                wrote on 5 Jan 2024, 20:12 last edited by SpookDog 1 May 2024, 20:16
                #911

                @Calum

                Yeah, I did wonder…

                I’m going to leave it overnight for the leak-down test, before I start throwing it back together again. It’s dry so far…

                alt text

                Hopefully tomorrow will be the day! This 2 weeks has been the longest I’ve been without a ride since I got it on the road, I think!…

                @Calum!

                I don’t get any emoji ~smiley faces anymore, is this just me on iPhone you recon?…

                1 Reply Last reply
                0
                • S SpookDog
                  5 Jan 2024, 19:57

                  @MadGyver

                  I forgot to ask: Does the Athena kit give the kickstart a more ‘compression’ feel than the standard? I used to be able to turn it over by hand on the kickstart…

                  M Offline
                  M Offline
                  MadGyver
                  wrote on 5 Jan 2024, 20:19 last edited by MadGyver 1 May 2024, 20:26
                  #912

                  @SpookDog said in So Close!...:

                  @MadGyver

                  I forgot to ask: Does the Athena kit give the kickstart a more ‘compression’ feel than the standard? I used to be able to turn it over by hand on the kickstart…

                  Yes it does. The first time I tried to start the engine it kicked back like a 4T and did little damage to my ankle. I had tha face "what the fux it's my XT600 all over again".
                  After the run in km's never happened.

                  Your spark plug wire must go from the other side,if you follow Yamaha schematics.

                  I need my tools and a pile of junk.....

                  S 1 Reply Last reply 5 Jan 2024, 20:33
                  0
                  • M MadGyver
                    5 Jan 2024, 20:19

                    @SpookDog said in So Close!...:

                    @MadGyver

                    I forgot to ask: Does the Athena kit give the kickstart a more ‘compression’ feel than the standard? I used to be able to turn it over by hand on the kickstart…

                    Yes it does. The first time I tried to start the engine it kicked back like a 4T and did little damage to my ankle. I had tha face "what the fux it's my XT600 all over again".
                    After the run in km's never happened.

                    Your spark plug wire must go from the other side,if you follow Yamaha schematics.

                    S Offline
                    S Offline
                    SpookDog
                    wrote on 5 Jan 2024, 20:33 last edited by SpookDog 1 May 2024, 22:27
                    #913

                    @MadGyver

                    The high tension lead? Interesting. I guess all my loom and wiring is bass ackwards! 😜 …

                    I had a 400 single that you had to find the sweet spot on, or it’d try and break your ankle! It had a decompression valve/lever that I could never get on with. You got to love 4/ singles. It’s like riding a 2 wheel tractor 🙂 …

                    —————————————

                    No leaks as of yet: 10.30pm

                    1 Reply Last reply
                    1
                    • O OllieDTR
                      3 Jan 2024, 22:32

                      Looking good spook! Have to let us know what the 170 kit is like and jetting wise. I’ve got to Abit of time to order mine be good to see how it goes with the TM32mm carb, are you running stock oil pump? I have the newer oil pump setup so can adjust it more be good to see if anyone has a guide on how much it needs adjusting by

                      S Offline
                      S Offline
                      SpookDog
                      wrote on 5 Jan 2024, 23:26 last edited by
                      #914

                      @OllieDTR said in So Close!...:

                      I have the newer oil pump setup so can adjust it more be good to see if anyone has a guide on how much it needs adjusting by

                      I’m going to be running the standard pump to match the standard 28mm carb…

                      ——————-

                      I think you need to work out the cm2 of the 28mm carb. Then the cm2 of 32mm. Figure out the % increase of the two. Then increase oil at WOT by the same %…

                      Or does that sound like BS?…

                      S 1 Reply Last reply 6 Jan 2024, 14:34
                      0
                      • S SpookDog
                        5 Jan 2024, 23:26

                        @OllieDTR said in So Close!...:

                        I have the newer oil pump setup so can adjust it more be good to see if anyone has a guide on how much it needs adjusting by

                        I’m going to be running the standard pump to match the standard 28mm carb…

                        ——————-

                        I think you need to work out the cm2 of the 28mm carb. Then the cm2 of 32mm. Figure out the % increase of the two. Then increase oil at WOT by the same %…

                        Or does that sound like BS?…

                        S Offline
                        S Offline
                        SpookDog
                        wrote on 6 Jan 2024, 14:34 last edited by SpookDog 1 Jun 2024, 14:39
                        #915

                        No leaks! Guess what’s next!…

                        alt text

                        Time of Rebuild: 44501 miles…

                        To be kickstarted soon…

                        1 Reply Last reply
                        2
                        • C Offline
                          C Offline
                          Calum
                          wrote on 6 Jan 2024, 15:09 last edited by
                          #916

                          Oohh exciting 😛

                          Always Originate, Never Pirate!

                          S 1 Reply Last reply 6 Jan 2024, 19:05
                          0
                          • C Calum
                            6 Jan 2024, 15:09

                            Oohh exciting 😛

                            S Offline
                            S Offline
                            SpookDog
                            wrote on 6 Jan 2024, 19:05 last edited by
                            #917

                            @Calum

                            Yeah I know, I live a very sedentary life. I get bored easily 😉 …

                            S 1 Reply Last reply 7 Jan 2024, 17:15
                            0
                            • S SpookDog
                              6 Jan 2024, 19:05

                              @Calum

                              Yeah I know, I live a very sedentary life. I get bored easily 😉 …

                              S Offline
                              S Offline
                              SpookDog
                              wrote on 7 Jan 2024, 17:15 last edited by
                              #918

                              Went for a test ride, it was OK but getting misfires/knocking at certain lower revs. That and it was taking a bit of effort to tick over cold…
                              First thought was check the plug. It looks sweet. Looked to the right at the carb thinking it might be an air leak and remembered I’d changed the rubber inlet manifold. I forgot to blank off the 2T oil pipe inlet! What a twat?!….
                              🫤

                              Gonna test it tomorrow with the oil pipe blanked off!…

                              1 Reply Last reply
                              1
                              • C Offline
                                C Offline
                                Calum
                                wrote on 7 Jan 2024, 22:25 last edited by
                                #919

                                Oh, that's a shame. Hopefully all sorted now.

                                Took me a little while to get the jetting right on my 170 kit, but now it's done it's lovely.

                                Always Originate, Never Pirate!

                                S 1 Reply Last reply 8 Jan 2024, 15:15
                                0
                                • C Calum
                                  7 Jan 2024, 22:25

                                  Oh, that's a shame. Hopefully all sorted now.

                                  Took me a little while to get the jetting right on my 170 kit, but now it's done it's lovely.

                                  S Offline
                                  S Offline
                                  SpookDog
                                  wrote on 8 Jan 2024, 15:15 last edited by
                                  #920

                                  Only been to the shop and back so I never properly warmed up. It felt really juddery at low revs, which I put down to the chain being as slack as a wizards sleeve (since corrected!). I’ve yet to take it for a proper test cause I’m all flued up and feel like shit!…

                                  One thing I’ve meant to ask is about the exhaust tone/note. Not at the tailpipe but deep in the expansion chamber. It sounds really different from before. Anyone gone from standard 3mb to Athena and noticed a similar thing, or not? Any info appreciated 👍 …

                                  M 1 Reply Last reply 8 Jan 2024, 15:34
                                  0
                                  • S SpookDog
                                    8 Jan 2024, 15:15

                                    Only been to the shop and back so I never properly warmed up. It felt really juddery at low revs, which I put down to the chain being as slack as a wizards sleeve (since corrected!). I’ve yet to take it for a proper test cause I’m all flued up and feel like shit!…

                                    One thing I’ve meant to ask is about the exhaust tone/note. Not at the tailpipe but deep in the expansion chamber. It sounds really different from before. Anyone gone from standard 3mb to Athena and noticed a similar thing, or not? Any info appreciated 👍 …

                                    M Offline
                                    M Offline
                                    MadGyver
                                    wrote on 8 Jan 2024, 15:34 last edited by
                                    #921

                                    @SpookDog said in So Close!...:

                                    One thing I’ve meant to ask is about the exhaust tone/note. Not at the tailpipe but deep in the expansion chamber. It sounds really different from before. Anyone gone from standard 3mb to Athena and noticed a similar thing, or not? Any info appreciated 👍 …

                                    I have a DEP modified to match the tuning,they tell me that it sounds like a factory 50cc moped not a tuned 170cc, that's until the power band then it screams like a TZ125. When was bought bone stock and abused sounded more serious I could say.

                                    I need my tools and a pile of junk.....

                                    S 1 Reply Last reply 8 Jan 2024, 15:59
                                    0
                                    • M MadGyver
                                      8 Jan 2024, 15:34

                                      @SpookDog said in So Close!...:

                                      One thing I’ve meant to ask is about the exhaust tone/note. Not at the tailpipe but deep in the expansion chamber. It sounds really different from before. Anyone gone from standard 3mb to Athena and noticed a similar thing, or not? Any info appreciated 👍 …

                                      I have a DEP modified to match the tuning,they tell me that it sounds like a factory 50cc moped not a tuned 170cc, that's until the power band then it screams like a TZ125. When was bought bone stock and abused sounded more serious I could say.

                                      S Offline
                                      S Offline
                                      SpookDog
                                      wrote on 8 Jan 2024, 15:59 last edited by SpookDog 1 Aug 2024, 16:00
                                      #922

                                      @MadGyver

                                      Ive ridden it for 31 miles and it still feels very lumpy with compression when I kick it over. Nothing like when I put a freshly rebored 3mb and piston on it. I could turn it over with my hand then (after riding!).
                                      I might be over worrying but I’m wondering if I could do with a thicker base gasket. The standard one is at least 1mm thick I believe?…

                                      1 Reply Last reply
                                      0
                                      • C Offline
                                        C Offline
                                        Calum
                                        wrote on 8 Jan 2024, 16:27 last edited by
                                        #923

                                        Is the powervalve all setup working correctly. I haven't got a video of my 170, but it's properly sweet.

                                        Shouldn't be juddering, how slack was the chain!

                                        Always Originate, Never Pirate!

                                        S 1 Reply Last reply 8 Jan 2024, 16:59
                                        0
                                        • C Calum
                                          8 Jan 2024, 16:27

                                          Is the powervalve all setup working correctly. I haven't got a video of my 170, but it's properly sweet.

                                          Shouldn't be juddering, how slack was the chain!

                                          S Offline
                                          S Offline
                                          SpookDog
                                          wrote on 8 Jan 2024, 16:59 last edited by
                                          #924

                                          @Calum

                                          Hey bud! Haven’t taken it over 5K so PV isn’t an issue. Chain was very slack, it must’ve bedded in during the 30mile shakedown ride a lot more than I thought possible! I’ve adjusted it up so it has just over 25mm play. I’m waiting till tomorrow to ride it cause I’ve had a few beers…

                                          I’m probably worrying too much. I almost expect something to go wrong…

                                          S 1 Reply Last reply 9 Jan 2024, 14:32
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