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DT125R FORUM

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  4. DT 125 RE Supermoto Build

DT 125 RE Supermoto Build

Scheduled Pinned Locked Moved DTRE
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  • Glynn123G Offline
    Glynn123G Offline
    Glynn123
    wrote on last edited by
    #16

    Well that's the build drawing to a close, light bracket made and everything wired up, Allen head bolts for forks and triples, new fork guards fitted with custom graphics, hand guards fitted, mirrors, polisport sm mudguard etc etc
    Really happy with how the bikes turned out, very minor work to go now so just the niggly bits, booking insurance tomorrow and MOT is booked for Saturday morning, sadly Scottish weathers decided to be 1 degrees on that day but should make it πŸ˜‚
    Will keep the thread updated with future changes and mods
    alt text
    alt text

    declanD 1 Reply Last reply
    1
    • Glynn123G Glynn123

      Well that's the build drawing to a close, light bracket made and everything wired up, Allen head bolts for forks and triples, new fork guards fitted with custom graphics, hand guards fitted, mirrors, polisport sm mudguard etc etc
      Really happy with how the bikes turned out, very minor work to go now so just the niggly bits, booking insurance tomorrow and MOT is booked for Saturday morning, sadly Scottish weathers decided to be 1 degrees on that day but should make it πŸ˜‚
      Will keep the thread updated with future changes and mods
      alt text
      alt text

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #17

      @glynn123 man that’s awesome well done mate

      1 Reply Last reply
      0
      • CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #18

        Looking lovely bud! Love those forks as well. Look pucker great colour scheme!

        Always Originate, Never Pirate!

        1 Reply Last reply
        0
        • Glynn123G Offline
          Glynn123G Offline
          Glynn123
          wrote on last edited by
          #19

          Just a little update video, done a few little subtle mods since like front tyre etc, clocked just over 1000 miles since the build and running strong, however the cheap headgasket blew so skimmed head and replaced with Athena gasket, seems good since. think it might be time for ignitech or zeeltronic next though πŸ€”
          https://youtu.be/WXQJr-PuTgA

          CalumC 1 Reply Last reply
          0
          • Glynn123G Glynn123

            Just a little update video, done a few little subtle mods since like front tyre etc, clocked just over 1000 miles since the build and running strong, however the cheap headgasket blew so skimmed head and replaced with Athena gasket, seems good since. think it might be time for ignitech or zeeltronic next though πŸ€”
            https://youtu.be/WXQJr-PuTgA

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #20

            @glynn123 I've never been able to get those cheap gaskets to work. Seriously what's the point!

            Always Originate, Never Pirate!

            Glynn123G 1 Reply Last reply
            0
            • CalumC Calum

              @glynn123 I've never been able to get those cheap gaskets to work. Seriously what's the point!

              Glynn123G Offline
              Glynn123G Offline
              Glynn123
              wrote on last edited by
              #21

              @calum Yeah mate I know what you mean!
              When I built the engine up I was in abit of a budget after getting a new (used) barrel, getting it bored and buying a wossner piston and so on (was at collage and worked part time at mcdonalds haha). I wasnt really aware of the headgasket problems and bought the cheap ebay gasket kit which came with one, something like Β£10 for the full engine gasket kit haha. I installed all with gasket sealant and wellseal on the head, to be fair the head gasket lasted a good few miles, but got considerably worse after the first time the engine got above 100 degrees. Ended up pressuring the coolant when ran on longer runs and stopping circulation until my temperature gauge on the radiator read over 100 degrees from the steam!!
              Ill give wossner and yamaha their due, the piston and barrel were still immaculate, no scores and could see the honing marks like the day I got it bored after 4 boil overs and 600 odd miles. Rings werent even worn!
              Head was warped slightly by the boils so skimmed with oil stone, 2000 grit sandpaper and a polishing compound before assembling with athena gasket and a fine coating of wellseal on each surface, I dont believe in installing gaskets without sealant. Been spot on since and hasnt lost any coolant so hoping it stays that way haha!

              CalumC declanD 2 Replies Last reply
              0
              • Glynn123G Glynn123

                @calum Yeah mate I know what you mean!
                When I built the engine up I was in abit of a budget after getting a new (used) barrel, getting it bored and buying a wossner piston and so on (was at collage and worked part time at mcdonalds haha). I wasnt really aware of the headgasket problems and bought the cheap ebay gasket kit which came with one, something like Β£10 for the full engine gasket kit haha. I installed all with gasket sealant and wellseal on the head, to be fair the head gasket lasted a good few miles, but got considerably worse after the first time the engine got above 100 degrees. Ended up pressuring the coolant when ran on longer runs and stopping circulation until my temperature gauge on the radiator read over 100 degrees from the steam!!
                Ill give wossner and yamaha their due, the piston and barrel were still immaculate, no scores and could see the honing marks like the day I got it bored after 4 boil overs and 600 odd miles. Rings werent even worn!
                Head was warped slightly by the boils so skimmed with oil stone, 2000 grit sandpaper and a polishing compound before assembling with athena gasket and a fine coating of wellseal on each surface, I dont believe in installing gaskets without sealant. Been spot on since and hasnt lost any coolant so hoping it stays that way haha!

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #22

                @glynn123 It shouldn't need sealant.

                Using sealant will mask problems.

                I've been there done that. You can use every other item out the cheap gasket set, but on these engines, either genuine or Athena head gasket is the way to go.

                Always Originate, Never Pirate!

                1 Reply Last reply
                0
                • Glynn123G Glynn123

                  @calum Yeah mate I know what you mean!
                  When I built the engine up I was in abit of a budget after getting a new (used) barrel, getting it bored and buying a wossner piston and so on (was at collage and worked part time at mcdonalds haha). I wasnt really aware of the headgasket problems and bought the cheap ebay gasket kit which came with one, something like Β£10 for the full engine gasket kit haha. I installed all with gasket sealant and wellseal on the head, to be fair the head gasket lasted a good few miles, but got considerably worse after the first time the engine got above 100 degrees. Ended up pressuring the coolant when ran on longer runs and stopping circulation until my temperature gauge on the radiator read over 100 degrees from the steam!!
                  Ill give wossner and yamaha their due, the piston and barrel were still immaculate, no scores and could see the honing marks like the day I got it bored after 4 boil overs and 600 odd miles. Rings werent even worn!
                  Head was warped slightly by the boils so skimmed with oil stone, 2000 grit sandpaper and a polishing compound before assembling with athena gasket and a fine coating of wellseal on each surface, I dont believe in installing gaskets without sealant. Been spot on since and hasnt lost any coolant so hoping it stays that way haha!

                  declanD Offline
                  declanD Offline
                  declan
                  wrote on last edited by
                  #23

                  @glynn123 was it dedicated head gasket sealant?

                  Glynn123G 1 Reply Last reply
                  0
                  • declanD declan

                    @glynn123 was it dedicated head gasket sealant?

                    Glynn123G Offline
                    Glynn123G Offline
                    Glynn123
                    wrote on last edited by
                    #24

                    @declan I used wellseal on my headgasket mate, developed by rolls Royce and used in a lot of racing engines without any gasket at all, just sealant on either surface. Top stuff and never had any trouble with it, doesn't really dry just fills minor scratches in surfaces etc

                    1 Reply Last reply
                    1
                    • 2 Offline
                      2 Offline
                      2stroketerry
                      wrote on last edited by
                      #25

                      If you get head machined flat you can get away with using a single O ring, any machine shop will cut an O ring groove cheap and use a yz O ring. 0_1525024314358_1.jpg

                      0_1525024334756_2.jpg

                      Glynn123G 1 Reply Last reply
                      2
                      • 2 2stroketerry

                        If you get head machined flat you can get away with using a single O ring, any machine shop will cut an O ring groove cheap and use a yz O ring. 0_1525024314358_1.jpg

                        0_1525024334756_2.jpg

                        Glynn123G Offline
                        Glynn123G Offline
                        Glynn123
                        wrote on last edited by
                        #26

                        @2stroketerry I considered doing this, however had a charity ride 2 days after my headgasket went so needed it running again for the weekend so just ordered an athena. My trials bikes always had O rings and never had a problem, if the athena gasket goes I will definetely go down the O ring route.

                        1 Reply Last reply
                        0
                        • Glynn123G Offline
                          Glynn123G Offline
                          Glynn123
                          wrote on last edited by
                          #27

                          Thought it might be about time to update the post, had a brilliant summer with my dt and happy to say it's performed perfectly all year, a few minor problems but nothing major. Been quite a few little mods done since I last updated this thread, I couldn't really remember to list them but you can see for yourself haha
                          alt text
                          alt text
                          alt text
                          alt text

                          1 Reply Last reply
                          1
                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #28

                            That really looks superb. Love the forks on it. SM setup looks grand as well

                            Always Originate, Never Pirate!

                            1 Reply Last reply
                            1
                            • F Offline
                              F Offline
                              finnerz89
                              wrote on last edited by
                              #29

                              That's looking sweet!

                              What crash bungs are they?

                              Current bikes:
                              DT125X '07
                              Street Triple R '11
                              Aprilia ETV1000 '02

                              Previous:
                              DR650RSE '96
                              FJ1200 '92

                              1 Reply Last reply
                              1
                              • Glynn123G Offline
                                Glynn123G Offline
                                Glynn123
                                wrote on last edited by
                                #30

                                Cheers guys, they're skateboard wheels held with M8 threaded bar and nylock nuts haha

                                NINJAN 1 Reply Last reply
                                1
                                • F Offline
                                  F Offline
                                  finnerz89
                                  wrote on last edited by
                                  #31

                                  Haha great idea πŸ‘Œ

                                  Current bikes:
                                  DT125X '07
                                  Street Triple R '11
                                  Aprilia ETV1000 '02

                                  Previous:
                                  DR650RSE '96
                                  FJ1200 '92

                                  1 Reply Last reply
                                  0
                                  • Glynn123G Glynn123

                                    Cheers guys, they're skateboard wheels held with M8 threaded bar and nylock nuts haha

                                    NINJAN Offline
                                    NINJAN Offline
                                    NINJA
                                    wrote on last edited by
                                    #32

                                    @Glynn123 So it's a six wheeler then??? :grinning_face_with_smiling_eyes: :smiling_face_with_open_mouth_closed_eyes: :smiling_face_with_open_mouth_cold_sweat: :face_with_tears_of_joy: 🀣

                                    She looks DAMN fine dude, very beastly indeed!!! :ogre:

                                    SEDUCED BY THE DARK SIDE!!!

                                    1 Reply Last reply
                                    0
                                    • Glynn123G Offline
                                      Glynn123G Offline
                                      Glynn123
                                      wrote on last edited by
                                      #33

                                      It's winter again, which means my DT is spread across the workshop.
                                      Going for some more power for next season, plans are 32mm carb, some porting work, fresh piston and zeeltronic cdi
                                      My box of goodies arrived today meaning I can start work
                                      alt text
                                      32mm Polini reworked PWK carburetor and some Jets to play with
                                      alt text
                                      I'm really happy with how this carburetor is built, one of the best I have seen in person and I've tried new Mikunis etc
                                      alt text
                                      alt text
                                      Even managed to fit the carb in the standard DT rubber without any modification! Although it was very tight.
                                      alt text
                                      While I had the carb off I decided it was time to fit the carbon fiber reeds I've had laying around for over a year, doubt they make much of a difference but wont do any harm
                                      alt text
                                      I got the carb in and the bike runs happily on choke, although it does sound lean to me, which I expected. It won't run at all off choke but will be swapping out the pilot jet after work tomorrow for more experimentation

                                      NINJAN 1 Reply Last reply
                                      1
                                      • stinkwheelerS Offline
                                        stinkwheelerS Offline
                                        stinkwheeler
                                        wrote on last edited by
                                        #34

                                        This is gold let us know how you get on I'm doing the exactly the same thing over the coming weeks so this may be verry helpfull πŸ˜‚πŸ‘Œ

                                        The hills are alive with the sound of ... braaaap baaaaap 😁

                                        Glynn123G 1 Reply Last reply
                                        0
                                        • Glynn123G Glynn123

                                          It's winter again, which means my DT is spread across the workshop.
                                          Going for some more power for next season, plans are 32mm carb, some porting work, fresh piston and zeeltronic cdi
                                          My box of goodies arrived today meaning I can start work
                                          alt text
                                          32mm Polini reworked PWK carburetor and some Jets to play with
                                          alt text
                                          I'm really happy with how this carburetor is built, one of the best I have seen in person and I've tried new Mikunis etc
                                          alt text
                                          alt text
                                          Even managed to fit the carb in the standard DT rubber without any modification! Although it was very tight.
                                          alt text
                                          While I had the carb off I decided it was time to fit the carbon fiber reeds I've had laying around for over a year, doubt they make much of a difference but wont do any harm
                                          alt text
                                          I got the carb in and the bike runs happily on choke, although it does sound lean to me, which I expected. It won't run at all off choke but will be swapping out the pilot jet after work tomorrow for more experimentation

                                          NINJAN Offline
                                          NINJAN Offline
                                          NINJA
                                          wrote on last edited by
                                          #35

                                          @Glynn123 Polini carb looks mint bud, the workmanship is much better than Dellorto's. How much did it set you back???

                                          SEDUCED BY THE DARK SIDE!!!

                                          Glynn123G 1 Reply Last reply
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