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DT125R FORUM

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  4. DT50X Engine Swap & Build

DT50X Engine Swap & Build

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  • DanRacingD DanRacing

    Ok boys I wasn't happy how the old engine mounts looked, so i went ahead and did stuff right
    (Getting my driving license for cars also helped me move around and get more parts and stuff)

    I ordered a machining shop to make me some bushings for the swingarm mount on the engine so it all lines up good without any play.
    alt text
    alt text
    I cut off my previously made engine mounts, fabricated new ones and tached them in place. Tried to line up the engine the best i could on center with the frame.

    alt text
    alt text

    Engine looks pretty lined up.

    alt text
    alt text

    Going to check everything after dinner and finish the welds for the mounts

    Glynn123G Offline
    Glynn123G Offline
    Glynn123
    wrote on last edited by
    #12

    @DanRacing looks a sweet build, I can imagine the DT engine to be perfect for a light frame like a 50cc, nice torque and good cruising

    DanRacingD 1 Reply Last reply
    0
    • Glynn123G Glynn123

      @DanRacing looks a sweet build, I can imagine the DT engine to be perfect for a light frame like a 50cc, nice torque and good cruising

      DanRacingD Offline
      DanRacingD Offline
      DanRacing
      wrote on last edited by
      #13

      @Glynn123 This bike with all the supermotard wheels, suspension and frame is about the same weight as the DT125R, that's one of the reasons i went with the swap. Altought with the AM6 engine it was faster than a mostly stock DT125R it wasn't very good for City Riding with internal ignition and such.
      The frame is actually sturdier than a DT125R frame from what it seems, alot thicker steel and very big main frame.

      Glynn123G 1 Reply Last reply
      0
      • DanRacingD DanRacing

        @Glynn123 This bike with all the supermotard wheels, suspension and frame is about the same weight as the DT125R, that's one of the reasons i went with the swap. Altought with the AM6 engine it was faster than a mostly stock DT125R it wasn't very good for City Riding with internal ignition and such.
        The frame is actually sturdier than a DT125R frame from what it seems, alot thicker steel and very big main frame.

        Glynn123G Offline
        Glynn123G Offline
        Glynn123
        wrote on last edited by
        #14

        @DanRacing I have a 2003 beta rr 50 supermotard and it weighs nothing compared to my DT haha, although the DT is allot nicer cruising engine

        1 Reply Last reply
        0
        • DanRacingD Offline
          DanRacingD Offline
          DanRacing
          wrote on last edited by DanRacing
          #15

          Well, finally got alot of progress done on the build for the last few days. little update:

          Sold my old frame and swingarm, and with the money i bought another DT50X just without engine, already with engine mounts for DT125R engine and aprillia RS50 rims(going to sell them)!

          alt text

          Stripped the whole 'new' bike, welded the mounts a little better, sandblasted it(made my shop a total beach) and painted it matt black. I also closed up the bottom end. Everything that's a wear part in the engine has been replaced. Clutch setup is Stock DT125R plates(using the clutch damper) with Bandit 400 Clutch springs. I still gotta finish the cylinder booster ports on the Athena 170cc(Yes i made custom exhaust port with boosters) and yes YPVS will still work and got to fully machine the DT125YPVS head to my needs.
          But i had to totally test fit the engine, looks great in there!!
          alt text

          alt text

          Alot of progress is going to be made in the next few days so stay tuned!

          CalumC 1 Reply Last reply
          3
          • DanRacingD Offline
            DanRacingD Offline
            DanRacing
            wrote on last edited by DanRacing
            #16

            Just a little of what the bike used to be and how it used sound:

            https://www.youtube.com/watch?v=WYO7HFVUX1s&feature=youtu.be

            NINJAN 1 Reply Last reply
            0
            • DanRacingD DanRacing

              Just a little of what the bike used to be and how it used sound:

              https://www.youtube.com/watch?v=WYO7HFVUX1s&feature=youtu.be

              NINJAN Offline
              NINJAN Offline
              NINJA
              wrote on last edited by
              #17

              @DanRacing Great work, that engine looks almost factory fitted!!! :thumbs_up_medium-light_skin_tone:

              SEDUCED BY THE DARK SIDE!!!

              DanRacingD 1 Reply Last reply
              0
              • NINJAN NINJA

                @DanRacing Great work, that engine looks almost factory fitted!!! :thumbs_up_medium-light_skin_tone:

                DanRacingD Offline
                DanRacingD Offline
                DanRacing
                wrote on last edited by
                #18

                @NINJA Yeah it looks really good on here, with all the fairings and stuff looks really factory, I don't really like the looks of the mounts the previous owner made, maybe i got to make a skid plate or something to cover it up ehe

                NINJAN 1 Reply Last reply
                1
                • DanRacingD DanRacing

                  @NINJA Yeah it looks really good on here, with all the fairings and stuff looks really factory, I don't really like the looks of the mounts the previous owner made, maybe i got to make a skid plate or something to cover it up ehe

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

                  @DanRacing I'm sure that you will get her looking real sweet and I agree with you about selling those RS wheels. Proper spoked wheels will make her look more of a Supermoto for-sure!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                  SEDUCED BY THE DARK SIDE!!!

                  DanRacingD 1 Reply Last reply
                  0
                  • DanRacingD DanRacing

                    Well, finally got alot of progress done on the build for the last few days. little update:

                    Sold my old frame and swingarm, and with the money i bought another DT50X just without engine, already with engine mounts for DT125R engine and aprillia RS50 rims(going to sell them)!

                    alt text

                    Stripped the whole 'new' bike, welded the mounts a little better, sandblasted it(made my shop a total beach) and painted it matt black. I also closed up the bottom end. Everything that's a wear part in the engine has been replaced. Clutch setup is Stock DT125R plates(using the clutch damper) with Bandit 400 Clutch springs. I still gotta finish the cylinder booster ports on the Athena 170cc(Yes i made custom exhaust port with boosters) and yes YPVS will still work and got to fully machine the DT125YPVS head to my needs.
                    But i had to totally test fit the engine, looks great in there!!
                    alt text

                    alt text

                    Alot of progress is going to be made in the next few days so stay tuned!

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

                    @DanRacing Would like to see the porting work when you get a chance.

                    Looks great with that Matte finish

                    Always Originate, Never Pirate!

                    DanRacingD 1 Reply Last reply
                    0
                    • NINJAN NINJA

                      @DanRacing I'm sure that you will get her looking real sweet and I agree with you about selling those RS wheels. Proper spoked wheels will make her look more of a Supermoto for-sure!!! :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes: :grinning_face_with_smiling_eyes:

                      DanRacingD Offline
                      DanRacingD Offline
                      DanRacing
                      wrote on last edited by
                      #21

                      @NINJA said in DT50X Engine Swap & Build:

                      sure that you will get her looking real sweet and I agree with you about selling those RS wheels. Proper spoked wheels will make her look more of a Supermoto for-sure!

                      I have matt black rims with candy blue hubs anb chrome reinforced spokes coming 😉

                      NINJAN 1 Reply Last reply
                      1
                      • CalumC Calum

                        @DanRacing Would like to see the porting work when you get a chance.

                        Looks great with that Matte finish

                        DanRacingD Offline
                        DanRacingD Offline
                        DanRacing
                        wrote on last edited by
                        #22

                        @Calum Will do, isn't something i like to show everyone, but I can atleast send you a picture 😉 I also do booster exhaust ports on other cylinders(stock DTR ones)

                        1 Reply Last reply
                        0
                        • DanRacingD DanRacing

                          @NINJA said in DT50X Engine Swap & Build:

                          sure that you will get her looking real sweet and I agree with you about selling those RS wheels. Proper spoked wheels will make her look more of a Supermoto for-sure!

                          I have matt black rims with candy blue hubs anb chrome reinforced spokes coming 😉

                          NINJAN Offline
                          NINJAN Offline
                          NINJA
                          wrote on last edited by
                          #23

                          @DanRacing She should look damn good once she's all finished. :thumbs_up_medium-light_skin_tone:

                          SEDUCED BY THE DARK SIDE!!!

                          DanRacingD 1 Reply Last reply
                          0
                          • Glynn123G Offline
                            Glynn123G Offline
                            Glynn123
                            wrote on last edited by
                            #24

                            If you fancy doing some trickery to the ports on one of my DTR barrels I'd be happy to send out haha

                            DanRacingD 1 Reply Last reply
                            0
                            • Glynn123G Glynn123

                              If you fancy doing some trickery to the ports on one of my DTR barrels I'd be happy to send out haha

                              DanRacingD Offline
                              DanRacingD Offline
                              DanRacing
                              wrote on last edited by
                              #25

                              @Glynn123 Shoot me a message 😉

                              1 Reply Last reply
                              0
                              • NINJAN NINJA

                                @DanRacing She should look damn good once she's all finished. :thumbs_up_medium-light_skin_tone:

                                DanRacingD Offline
                                DanRacingD Offline
                                DanRacing
                                wrote on last edited by
                                #26

                                @NINJA Sure hope it will, still have alot of money i need to spend on it tho :face_screaming_in_fear: :face_screaming_in_fear:

                                NINJAN 1 Reply Last reply
                                1
                                • DanRacingD DanRacing

                                  @NINJA Sure hope it will, still have alot of money i need to spend on it tho :face_screaming_in_fear: :face_screaming_in_fear:

                                  NINJAN Offline
                                  NINJAN Offline
                                  NINJA
                                  wrote on last edited by
                                  #27

                                  @DanRacing LOL join the club, my rebuild is on hold for now, as I save up for new parts. 😉

                                  SEDUCED BY THE DARK SIDE!!!

                                  DanRacingD 1 Reply Last reply
                                  0
                                  • NINJAN NINJA

                                    @DanRacing LOL join the club, my rebuild is on hold for now, as I save up for new parts. 😉

                                    DanRacingD Offline
                                    DanRacingD Offline
                                    DanRacing
                                    wrote on last edited by
                                    #28

                                    @NINJA Dude it's so bad as i'm also buying a BMW(i got one already, trading it in for a E46 320Ci) and i'll also have alot of money to spend on the car ahah

                                    Glynn123G 1 Reply Last reply
                                    0
                                    • DanRacingD DanRacing

                                      @NINJA Dude it's so bad as i'm also buying a BMW(i got one already, trading it in for a E46 320Ci) and i'll also have alot of money to spend on the car ahah

                                      Glynn123G Offline
                                      Glynn123G Offline
                                      Glynn123
                                      wrote on last edited by
                                      #29

                                      @DanRacing will send you a message mate, also wise choice with the BMW, recently picked myself up an E36 325i, 6 cylinders sound is unbeatable 😉

                                      1 Reply Last reply
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