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DT125R FORUM

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  4. The wr200 3xp / dt125r 3bn hybrid 200cc engine no.2

The wr200 3xp / dt125r 3bn hybrid 200cc engine no.2

Scheduled Pinned Locked Moved Engine
43 Posts 10 Posters 7.5k Views 2 Watching
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  • F finnerz89

    @Louis-James similar colour to my cases! 👍 Looking good dude

    Louis-DT-WRL Offline
    Louis-DT-WRL Offline
    Louis-DT-WR
    wrote on last edited by
    #7

    @finnerz89 thanks, I chose at random tbh as the samples are so hard to tell from in my experience but happy with the outcome

    1 Reply Last reply
    0
    • Louis-DT-WRL Louis-DT-WR

      Crankshaft is finally due to arrive tomorrow 😁

      After speaking of the anodizers they recommend not anodising on a sandblasted finish.

      So I Powder coated instead.

      alt text
      alt text

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #8

      @Louis-James They've come up well.

      I was always really sceptical about powdercoating the crank cases.

      Always Originate, Never Pirate!

      declanD 1 Reply Last reply
      1
      • CalumC Calum

        @Louis-James They've come up well.

        I was always really sceptical about powdercoating the crank cases.

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #9

        @Calum howcome

        1 Reply Last reply
        0
        • Louis-DT-WRL Offline
          Louis-DT-WRL Offline
          Louis-DT-WR
          wrote on last edited by
          #10

          alt text
          Finally arrived

          NINJAN 1 Reply Last reply
          3
          • Louis-DT-WRL Louis-DT-WR

            alt text
            Finally arrived

            NINJAN Offline
            NINJAN Offline
            NINJA
            wrote on last edited by
            #11

            @Louis-James Very cranky!!! :smiling_face_with_open_mouth_cold_sweat: :face_with_tears_of_joy: 🤣

            SEDUCED BY THE DARK SIDE!!!

            1 Reply Last reply
            1
            • MiniaM Offline
              MiniaM Offline
              Minia
              wrote on last edited by
              #12

              Looking good! Then again everything you do looks outstanding to me.

              Yamaha DT125R Blue 2002, XT 125 1982, Yamaha WR250Z 1992, BMW GS650F 1994, Benelli BN302 2015

              Louis-DT-WRL 1 Reply Last reply
              1
              • MiniaM Minia

                Looking good! Then again everything you do looks outstanding to me.

                Louis-DT-WRL Offline
                Louis-DT-WRL Offline
                Louis-DT-WR
                wrote on last edited by
                #13

                @Minia thanks man. I like to do my best 😉

                1 Reply Last reply
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                • Louis-DT-WRL Offline
                  Louis-DT-WRL Offline
                  Louis-DT-WR
                  wrote on last edited by
                  #14

                  alt text
                  alt text
                  New powervalver but not genuine from Greece.

                  alt text
                  alt text

                  NINJAN 1 Reply Last reply
                  1
                  • Louis-DT-WRL Louis-DT-WR

                    alt text
                    alt text
                    New powervalver but not genuine from Greece.

                    alt text
                    alt text

                    NINJAN Offline
                    NINJAN Offline
                    NINJA
                    wrote on last edited by
                    #15

                    @Louis-James If it's not genuine then what are the Yammy packets for??? :confused_face:

                    SEDUCED BY THE DARK SIDE!!!

                    Louis-DT-WRL 1 Reply Last reply
                    0
                    • NINJAN NINJA

                      @Louis-James If it's not genuine then what are the Yammy packets for??? :confused_face:

                      Louis-DT-WRL Offline
                      Louis-DT-WRL Offline
                      Louis-DT-WR
                      wrote on last edited by
                      #16

                      @NINJA the powervalve is a reproduction. I have lots of brand new genuine parts that came from fowlers

                      1 Reply Last reply
                      0
                      • Louis-DT-WRL Offline
                        Louis-DT-WRL Offline
                        Louis-DT-WR
                        wrote on last edited by
                        #17

                        What is this? I've not seen it before from memory clips inside the splined washer .

                        alt text

                        alt text

                        1 Reply Last reply
                        0
                        • Louis-DT-WRL Offline
                          Louis-DT-WRL Offline
                          Louis-DT-WR
                          wrote on last edited by
                          #18

                          alt text
                          alt text
                          alt text

                          Cases bored out for the larger crankshaft

                          alt text
                          alt text
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                          alt text

                          NINJAN 1 Reply Last reply
                          2
                          • Louis-DT-WRL Louis-DT-WR

                            alt text
                            alt text
                            alt text

                            Cases bored out for the larger crankshaft

                            alt text
                            alt text
                            alt text
                            alt text

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

                            @Louis-James Sweet looking job dude. :clapping_hands:

                            SEDUCED BY THE DARK SIDE!!!

                            1 Reply Last reply
                            0
                            • CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #20

                              WOw, that looks superb!

                              Always Originate, Never Pirate!

                              Louis-DT-WRL 1 Reply Last reply
                              0
                              • CalumC Calum

                                WOw, that looks superb!

                                Louis-DT-WRL Offline
                                Louis-DT-WRL Offline
                                Louis-DT-WR
                                wrote on last edited by
                                #21

                                @Calum @NINJA cheers lads. When you're rebuilding an engine that the previous owner "rebuilt" themselves you soon realise how many parts were missing, damaged or incorrect. Any help with the clutch washer ? Still need to do 1 more fowlers order. Pistons on its way 🙂

                                1 Reply Last reply
                                0
                                • 2 Offline
                                  2 Offline
                                  2stroketerry
                                  wrote on last edited by
                                  #22

                                  @Louis-James Great little engine your building and like seeing quality work that you do. When i put a 57mm stroke crank in mine didn't fit the washer under the PRIMARY DRIVE GEAR NUT so the so the nut had the maximum amount of threads to screw onto.

                                  0_1537452840393_nut.jpg

                                  The tabbed washer inside the splined washer is used to set the mainshaft endfloat on the clutch on some yamaha engines as they mix and match some gears inside the crankcase.
                                  Was thinking of using this on my new engine build but now decided to see what i can build using the Athena 170 kit so just bought them.
                                  https://www.ebay.co.uk/itm/YAMAHA-WR-200-3XP-4BF-NEW-SLEEVED-BIG-BORE-68mm-Cylinder-PISTON-3XP-11311-00-00/113185389112?hash=item1a5a5ffa38:g:3fwAAOSwEfBbZ3Je

                                  @Louis-James where did you get the final drive shaft from as need one for my new build. thanks

                                  Louis-DT-WRL 1 Reply Last reply
                                  1
                                  • 2 2stroketerry

                                    @Louis-James Great little engine your building and like seeing quality work that you do. When i put a 57mm stroke crank in mine didn't fit the washer under the PRIMARY DRIVE GEAR NUT so the so the nut had the maximum amount of threads to screw onto.

                                    0_1537452840393_nut.jpg

                                    The tabbed washer inside the splined washer is used to set the mainshaft endfloat on the clutch on some yamaha engines as they mix and match some gears inside the crankcase.
                                    Was thinking of using this on my new engine build but now decided to see what i can build using the Athena 170 kit so just bought them.
                                    https://www.ebay.co.uk/itm/YAMAHA-WR-200-3XP-4BF-NEW-SLEEVED-BIG-BORE-68mm-Cylinder-PISTON-3XP-11311-00-00/113185389112?hash=item1a5a5ffa38:g:3fwAAOSwEfBbZ3Je

                                    @Louis-James where did you get the final drive shaft from as need one for my new build. thanks

                                    Louis-DT-WRL Offline
                                    Louis-DT-WRL Offline
                                    Louis-DT-WR
                                    wrote on last edited by
                                    #23

                                    @2stroketerry thanks man, I also ran a blaster 200 crankshaft on my original 200cc engine but wasn't happy with less gear meshing between the primary drive and clutch.

                                    With regards to the tab washer.. I can't see it on any exploded diagrams. What years use it?

                                    The final drive shaft I got brand new on eBay from Greece , £30 from memory, from Yamaha it's around £100

                                    1 Reply Last reply
                                    0
                                    • Irongamer727I Offline
                                      Irongamer727I Offline
                                      Irongamer727
                                      wrote on last edited by
                                      #24

                                      Won't the 199cm3 text be an issue at the mot?

                                      1 Reply Last reply
                                      0
                                      • 2 Offline
                                        2 Offline
                                        2stroketerry
                                        wrote on last edited by
                                        #25

                                        @Irongamer727 I have an Athena 170cc kit with a 65mm piston in it that has 124cm3 cast on the side as well as Yamaha 5ML00 on it even though there is no such Yamaha cylinder number so no probelems with mot, police or insurance wise. The cylinder has a base spacer and has been skimmed to the correct compression ratio as well as the exhaust port and powervalve modified being 5mm wider, the transfer ports are raised by 1.5mm. Running the standard tm28 carb with power jet blocked and a 310 main jet it makes maximum power at 11,500 rpm and 37hp. No idea of top speed but running standard 16 57 gearing it goes straight off the clock in 5th gear but clock only goes to 80mph and will rev to maximum revs in 6th gear so it
                                        probably does about 100mph. Was going to gear it up but wheelies mental and when gets to 10,000 rpm it just goes mental with power.
                                        0_1537571994788_10.jpg

                                        0_1537572031838_13.jpg

                                        1 Reply Last reply
                                        1
                                        • Louis-DT-WRL Offline
                                          Louis-DT-WRL Offline
                                          Louis-DT-WR
                                          wrote on last edited by
                                          #26

                                          Many MOT testers don't care tbh, but you could file the numbers off or do your big bike test.

                                          I think 2 strokes cc should be measured from above the exhaust port anyway 😉

                                          1 Reply Last reply
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