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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
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  • MadGyverM Offline
    MadGyverM Offline
    MadGyver
    wrote on last edited by
    #902

    @SpookDog What happened?

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

    S 1 Reply Last reply
    0
    • MadGyverM MadGyver

      @SpookDog What happened?

      S Offline
      S Offline
      SpookDog
      wrote on last edited by SpookDog
      #903

      @MadGyver

      Pissing coolant from the bottom of the barrel, where the casings meet. They’re not a matched pair and one is a hair higher at the front on the clutch side. Perfect at the back…

      Going to lap the front with wet and dry and a 10cm (10cm X 10cm) square of plate glass…
      It was the one time I never used sealant on the base gasket, plus I used my Vertex gasket on the Tzr! I ended up using one of those 0.5mm fleabay ones. A decent thickness gasket and copper spray sealant and I’d probably never had a problem…

      S 1 Reply Last reply
      0
      • S SpookDog

        @MadGyver

        Pissing coolant from the bottom of the barrel, where the casings meet. They’re not a matched pair and one is a hair higher at the front on the clutch side. Perfect at the back…

        Going to lap the front with wet and dry and a 10cm (10cm X 10cm) square of plate glass…
        It was the one time I never used sealant on the base gasket, plus I used my Vertex gasket on the Tzr! I ended up using one of those 0.5mm fleabay ones. A decent thickness gasket and copper spray sealant and I’d probably never had a problem…

        S Offline
        S Offline
        SpookDog
        wrote on last edited by
        #904

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

        MadGyverM 1 Reply Last reply
        1
        • S SpookDog

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

          MadGyverM Offline
          MadGyverM Offline
          MadGyver
          wrote on 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
          0
          • MadGyverM MadGyver

            @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 last edited by
            #906

            @MadGyver

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

            MadGyverM 1 Reply Last reply
            0
            • S SpookDog

              @MadGyver

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

              MadGyverM Offline
              MadGyverM Offline
              MadGyver
              wrote on 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
              0
              • MadGyverM MadGyver

                @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 last edited by SpookDog
                #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
                • MadGyverM MadGyver

                  @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 last edited by SpookDog
                  #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…

                  MadGyverM 1 Reply Last reply
                  0
                  • CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on 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
                    0
                    • CalumC Calum

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

                      S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by SpookDog
                      #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

                        @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…

                        MadGyverM Offline
                        MadGyverM Offline
                        MadGyver
                        wrote on last edited by MadGyver
                        #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
                        0
                        • MadGyverM MadGyver

                          @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 last edited by SpookDog
                          #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
                          • OllieDTRO OllieDTR

                            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 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
                            0
                            • S SpookDog

                              @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 last edited by SpookDog
                              #915

                              No leaks! Guess what’s next!…

                              alt text

                              Time of Rebuild: 44501 miles…

                              To be kickstarted soon…

                              1 Reply Last reply
                              2
                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #916

                                Oohh exciting 😛

                                Always Originate, Never Pirate!

                                S 1 Reply Last reply
                                0
                                • CalumC Calum

                                  Oohh exciting 😛

                                  S Offline
                                  S Offline
                                  SpookDog
                                  wrote on last edited by
                                  #917

                                  @Calum

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

                                  S 1 Reply Last reply
                                  0
                                  • S SpookDog

                                    @Calum

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

                                    S Offline
                                    S Offline
                                    SpookDog
                                    wrote on 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
                                    • CalumC Offline
                                      CalumC Offline
                                      Calum
                                      wrote on 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
                                      0
                                      • CalumC Calum

                                        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 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 👍 …

                                        MadGyverM 1 Reply Last reply
                                        0
                                        • S SpookDog

                                          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 👍 …

                                          MadGyverM Offline
                                          MadGyverM Offline
                                          MadGyver
                                          wrote on 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
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