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DT125R FORUM

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  4. Cheap Cylinders

Cheap Cylinders

Scheduled Pinned Locked Moved Engine
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  • CalumC Calum

    Wow, yeah no.

    Just get an OEM barrel.

    Athena make good stuff too.

    O Offline
    O Offline
    Oisin
    wrote on last edited by
    #3

    @calum

    Why what would be wrong with these ones ¿
    Where would I get a reasonably priced Athena one

    CalumC 1 Reply Last reply
    0
    • O Oisin

      @calum

      Why what would be wrong with these ones ¿
      Where would I get a reasonably priced Athena one

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by Calum
      #4

      @oisin Why are you cheaping out on the heart of your motorcycle.

      Firstly, tolerances. China aren't known for the QC's.

      Are the bores correctly honed, are the ports chamferred.

      Secondly 3BN is a larger bore requiring a shorting stroke.

      Fitting a genuine 3BN barrel to your 3MB will result in the piston fouling the head. Which would be disastrous.

      I got a brand new 170 Athena kit for under £400.

      But Athena also do a 125.

      https://www.pjme.co.uk/acatalog/Yamaha-DT125R-Cylinder-Kit-5689.html#SID=98

      Always Originate, Never Pirate!

      1 Reply Last reply
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      • declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #5

        @oisin I'm a fan of Chinese stuff, but you say cheap you can get a genuine cylinder way cheaper off ebay either already in good condition or get a bad one even cheaper and get it rebored makes way more sense imo

        1 Reply Last reply
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        • O Offline
          O Offline
          Oisin
          wrote on last edited by
          #6

          Yea I should probably look at getting a proper one.

          S 1 Reply Last reply
          0
          • O Oisin

            Yea I should probably look at getting a proper one.

            S Offline
            S Offline
            SpookDog
            wrote on last edited by
            #7

            @oisin

            Definitely!
            Please!

            1 Reply Last reply
            0
            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #8

              Genuine barrel:
              https://www.ebay.co.uk/itm/294163421645?_trkparms=ispr%3D1&hash=item447d8199cd:g:KyUAAOSwEzxglGAu&amdata=enc%3AAQAFAAACgBaobrjLl8XobRIiIML1V4Imu%252Fn%252BzU5L90Z278x5ickkvjzWOStkxwnlDuxSI1PVVn2jedjJZpYtGYVED0h1pW9Hb6vmfEkWRpvjAPkG%252FPoHbXLDocJb9rr%252F%252FGom1ahd1HXp2iEpkYr%252BG4SPFnUPIYsf5Un3FYs8Tip%252Bg94frZvCkU9BDLVsgHLyCd%252BJD2YF6nHw5SH8%252FKhU0d6HBOxDf3c9pY8HOmA5MojfS42bIi%252FIdQWzPMeXeJN5OQL9sIutNZsfY1EnHPK4aLjZcjrVGdnUywtGlMiM4GAZ31NWXtTkHodvQRZahOgMVXApmeF2PJkdH8KJ4WTj7U%252B6Z6m0j9H7xsBFcU7%252BdFHtrBXGEwYwzxDUR7PMzlP8WOpEjSK57FIYMGoTJvTCL47NckQvj5Y0xEgoxwn9NIXpVvogvtUWGOsg60ofMZXYEnyI8xZaBU%252FMg9D72IUaJ0zsNtJwBnKsDRuZFAog%252B5gNsguWhmoMvpdqSt7vfFvP3TIXb4TEHYfpOrUQ6ZRPXlVkvUur1yYF8Smq%252Fw%252BnPGFi5fKJaaRDwcUKTr8uz%252F1DMBgKMbVWCepgiIkR9Em5X7qiPtsYv%252BtU7d2UhImom8MQxVc2Ecgcx%252FgjlaqBLa1c5fHYSLxsTql53wDPbSZFFCrbHy%252FpuSOjLg9dcSqG9lZ9j9Qcfm5C3AJWHXnuF7ABXDrOSd4%252Fz%252FXxRnyRvnyDjIo0FQZrBcDk%252BculPUhe%252FGIzOa1EqvKBZL24ifdPE9bXzJnzAtyPWVsdArfgSobns%252BxqrpygbIfUyHGN73nu%252FdXy9wWiD5oUUEN8JIO0OlaGgjjE5sJGRLnTg8hJFZPYn5FmEdtMypw%253D|cksum%3A2941634216456d45bf51623a4d568147b0c69a7f5aeb|ampid%3APL_CLK|clp%3A2334524

              £25

              https://www.ebay.co.uk/itm/164718558256?hash=item2659fdbc30:g:m-IAAOSwDWVgNC-R

              £45

              Both need a rebore £35 inc VAT.

              Always Originate, Never Pirate!

              T O 2 Replies Last reply
              0
              • CalumC Calum

                Genuine barrel:
                https://www.ebay.co.uk/itm/294163421645?_trkparms=ispr%3D1&hash=item447d8199cd:g:KyUAAOSwEzxglGAu&amdata=enc%3AAQAFAAACgBaobrjLl8XobRIiIML1V4Imu%252Fn%252BzU5L90Z278x5ickkvjzWOStkxwnlDuxSI1PVVn2jedjJZpYtGYVED0h1pW9Hb6vmfEkWRpvjAPkG%252FPoHbXLDocJb9rr%252F%252FGom1ahd1HXp2iEpkYr%252BG4SPFnUPIYsf5Un3FYs8Tip%252Bg94frZvCkU9BDLVsgHLyCd%252BJD2YF6nHw5SH8%252FKhU0d6HBOxDf3c9pY8HOmA5MojfS42bIi%252FIdQWzPMeXeJN5OQL9sIutNZsfY1EnHPK4aLjZcjrVGdnUywtGlMiM4GAZ31NWXtTkHodvQRZahOgMVXApmeF2PJkdH8KJ4WTj7U%252B6Z6m0j9H7xsBFcU7%252BdFHtrBXGEwYwzxDUR7PMzlP8WOpEjSK57FIYMGoTJvTCL47NckQvj5Y0xEgoxwn9NIXpVvogvtUWGOsg60ofMZXYEnyI8xZaBU%252FMg9D72IUaJ0zsNtJwBnKsDRuZFAog%252B5gNsguWhmoMvpdqSt7vfFvP3TIXb4TEHYfpOrUQ6ZRPXlVkvUur1yYF8Smq%252Fw%252BnPGFi5fKJaaRDwcUKTr8uz%252F1DMBgKMbVWCepgiIkR9Em5X7qiPtsYv%252BtU7d2UhImom8MQxVc2Ecgcx%252FgjlaqBLa1c5fHYSLxsTql53wDPbSZFFCrbHy%252FpuSOjLg9dcSqG9lZ9j9Qcfm5C3AJWHXnuF7ABXDrOSd4%252Fz%252FXxRnyRvnyDjIo0FQZrBcDk%252BculPUhe%252FGIzOa1EqvKBZL24ifdPE9bXzJnzAtyPWVsdArfgSobns%252BxqrpygbIfUyHGN73nu%252FdXy9wWiD5oUUEN8JIO0OlaGgjjE5sJGRLnTg8hJFZPYn5FmEdtMypw%253D|cksum%3A2941634216456d45bf51623a4d568147b0c69a7f5aeb|ampid%3APL_CLK|clp%3A2334524

                £25

                https://www.ebay.co.uk/itm/164718558256?hash=item2659fdbc30:g:m-IAAOSwDWVgNC-R

                £45

                Both need a rebore £35 inc VAT.

                T Offline
                T Offline
                theportingmaster
                wrote on last edited by
                #9

                @Oisin Have a 3MB00 barrel with a 56.75mm Bore Namura Piston Kit just been bored & honed at Mick Abbey Tuning. still at Micks buf will be picking up this week, pm me if want it and will
                upload some photos. cheers Terry

                O 1 Reply Last reply
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                • T theportingmaster

                  @Oisin Have a 3MB00 barrel with a 56.75mm Bore Namura Piston Kit just been bored & honed at Mick Abbey Tuning. still at Micks buf will be picking up this week, pm me if want it and will
                  upload some photos. cheers Terry

                  O Offline
                  O Offline
                  Oisin
                  wrote on last edited by
                  #10

                  @theportingmaster
                  Yea please send on some pics and how much u looking for

                  1 Reply Last reply
                  0
                  • CalumC Calum

                    Genuine barrel:
                    https://www.ebay.co.uk/itm/294163421645?_trkparms=ispr%3D1&hash=item447d8199cd:g:KyUAAOSwEzxglGAu&amdata=enc%3AAQAFAAACgBaobrjLl8XobRIiIML1V4Imu%252Fn%252BzU5L90Z278x5ickkvjzWOStkxwnlDuxSI1PVVn2jedjJZpYtGYVED0h1pW9Hb6vmfEkWRpvjAPkG%252FPoHbXLDocJb9rr%252F%252FGom1ahd1HXp2iEpkYr%252BG4SPFnUPIYsf5Un3FYs8Tip%252Bg94frZvCkU9BDLVsgHLyCd%252BJD2YF6nHw5SH8%252FKhU0d6HBOxDf3c9pY8HOmA5MojfS42bIi%252FIdQWzPMeXeJN5OQL9sIutNZsfY1EnHPK4aLjZcjrVGdnUywtGlMiM4GAZ31NWXtTkHodvQRZahOgMVXApmeF2PJkdH8KJ4WTj7U%252B6Z6m0j9H7xsBFcU7%252BdFHtrBXGEwYwzxDUR7PMzlP8WOpEjSK57FIYMGoTJvTCL47NckQvj5Y0xEgoxwn9NIXpVvogvtUWGOsg60ofMZXYEnyI8xZaBU%252FMg9D72IUaJ0zsNtJwBnKsDRuZFAog%252B5gNsguWhmoMvpdqSt7vfFvP3TIXb4TEHYfpOrUQ6ZRPXlVkvUur1yYF8Smq%252Fw%252BnPGFi5fKJaaRDwcUKTr8uz%252F1DMBgKMbVWCepgiIkR9Em5X7qiPtsYv%252BtU7d2UhImom8MQxVc2Ecgcx%252FgjlaqBLa1c5fHYSLxsTql53wDPbSZFFCrbHy%252FpuSOjLg9dcSqG9lZ9j9Qcfm5C3AJWHXnuF7ABXDrOSd4%252Fz%252FXxRnyRvnyDjIo0FQZrBcDk%252BculPUhe%252FGIzOa1EqvKBZL24ifdPE9bXzJnzAtyPWVsdArfgSobns%252BxqrpygbIfUyHGN73nu%252FdXy9wWiD5oUUEN8JIO0OlaGgjjE5sJGRLnTg8hJFZPYn5FmEdtMypw%253D|cksum%3A2941634216456d45bf51623a4d568147b0c69a7f5aeb|ampid%3APL_CLK|clp%3A2334524

                    £25

                    https://www.ebay.co.uk/itm/164718558256?hash=item2659fdbc30:g:m-IAAOSwDWVgNC-R

                    £45

                    Both need a rebore £35 inc VAT.

                    O Offline
                    O Offline
                    Oisin
                    wrote on last edited by
                    #11

                    @calum
                    Thanks I really appreciate it. If I get rebore would I have to get new piston and if so what size

                    CalumC 1 Reply Last reply
                    0
                    • O Oisin

                      @calum
                      Thanks I really appreciate it. If I get rebore would I have to get new piston and if so what size

                      CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #12

                      @oisin When you rebore you need a larger piston. The piston should be supplied at time of rebore to ensure tolerances are matched. The borer will advise what piston to go with.

                      Once you go to a certain bore size, the powervalve must be modifed to avoid fouling the piston.

                      Always Originate, Never Pirate!

                      T 1 Reply Last reply
                      0
                      • CalumC Calum

                        @oisin When you rebore you need a larger piston. The piston should be supplied at time of rebore to ensure tolerances are matched. The borer will advise what piston to go with.

                        Once you go to a certain bore size, the powervalve must be modifed to avoid fouling the piston.

                        T Offline
                        T Offline
                        theportingmaster
                        wrote on last edited by
                        #13

                        @Oisin The cylinder has been rebored and honed with a quality
                        Namura piston kit, comes complete with modified powervalve and a brand new Japanese little end bearing. Has been re-painted in VHT met silver. £200 plus delivery
                        cheers Terry

                        O 1 Reply Last reply
                        0
                        • T theportingmaster

                          @Oisin The cylinder has been rebored and honed with a quality
                          Namura piston kit, comes complete with modified powervalve and a brand new Japanese little end bearing. Has been re-painted in VHT met silver. £200 plus delivery
                          cheers Terry

                          O Offline
                          O Offline
                          Oisin
                          wrote on last edited by
                          #14

                          @theportingmaster
                          That would be great. Could I get your email or contact info so that we could organise payment and and some pictures

                          T 1 Reply Last reply
                          0
                          • O Oisin

                            @theportingmaster
                            That would be great. Could I get your email or contact info so that we could organise payment and and some pictures

                            T Offline
                            T Offline
                            theportingmaster
                            wrote on last edited by theportingmaster
                            #15

                            @oisin Here a some pictures of the parts, have given you a set of Carbon Fibre Reeds for free. If you give me your email will send lots of high resolution photos of the parts as don't know how to add images here properly.
                            (https://hosting.photobucket.com/images/i/portingmaster/1.jpg?width=450&height=278&crop=fill)
                            https://hosting.photobucket.com/images/i/portingmaster/2.jpg?width=450&height=278&crop=fill)

                            O 1 Reply Last reply
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                            • CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #16

                              alt text

                              Always Originate, Never Pirate!

                              1 Reply Last reply
                              0
                              • T theportingmaster

                                @oisin Here a some pictures of the parts, have given you a set of Carbon Fibre Reeds for free. If you give me your email will send lots of high resolution photos of the parts as don't know how to add images here properly.
                                (https://hosting.photobucket.com/images/i/portingmaster/1.jpg?width=450&height=278&crop=fill)
                                https://hosting.photobucket.com/images/i/portingmaster/2.jpg?width=450&height=278&crop=fill)

                                O Offline
                                O Offline
                                Oisin
                                wrote on last edited by
                                #17

                                @theportingmaster
                                My email is mcgilloisin@gmail.com I appreciate it thank you.

                                1 Reply Last reply
                                0
                                • O Offline
                                  O Offline
                                  Oisin
                                  wrote on last edited by
                                  #18

                                  Hey
                                  I’m looking to get the bike up and running again for the summer and I’m wondering if anyone is selling a cylinder for a 2005 Dt125. Ideally with piston and pv, all good to go.
                                  Thanks guys
                                  Oisín

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