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DT125R FORUM

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  4. '92 Yamaha WR200

'92 Yamaha WR200

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  • ChallengerC Challenger

    I've been having fun with jetting today, currently im using 220 main jet and 37,5 pilot jet, but the bike is still running a little rich. Its kinda weird that after changing the silencer or pipe in DT125R you install 240 & 30 jets and the bike is running fine, but the WR with the FMF pipe likes the small jets. Originally there was a 210 main jet installed but after the new piston is runned-in I think of buying the 200 size. The air mixture screw is almost totally open now(means a lot of air) but the bike is still running rich, and as I go down with the sizes its better and better. I have the rubber air-scoop in the airbox still installed and it will stay this way. Other than that I love the new high-quality sleeve and the power it provides. Maybe Ill go for a ride tomorrow, but there's still some work to do, like rebuilding the front caliper and the brake pump.

    Louis-DT-WRL Offline
    Louis-DT-WRL Offline
    Louis-DT-WR
    wrote on last edited by
    #5

    @Challenger it's not just the main jet size to take into account. The needles jet and the Jet needle is also to take into account

    • The dt200wr / wr200 has a power jet
    ChallengerC 1 Reply Last reply
    2
    • Louis-DT-WRL Louis-DT-WR

      @Challenger it's not just the main jet size to take into account. The needles jet and the Jet needle is also to take into account

      • The dt200wr / wr200 has a power jet
      ChallengerC Offline
      ChallengerC Offline
      Challenger
      wrote on last edited by
      #6

      @Louis-DT-WR I went 2.5 up on the pilot jet from 35 to 37,5, but the engine doesnt like any bigger jets I try to install. I didnt take the power jet into account, it says on the parts diagram it should be 0.8 originally, I'll check that out. The needle is always in the most closed position(pin on the top mounting point), otherwise the engine doesnt want to rev at all.

      1 Reply Last reply
      0
      • MiniaM Offline
        MiniaM Offline
        Minia
        wrote on last edited by
        #7

        Fantastic stuff! Absolutely lovely looking rebuild that, you got a thread on it?

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

        1 Reply Last reply
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        • ChallengerC Offline
          ChallengerC Offline
          Challenger
          wrote on last edited by Challenger
          #8

          Adding some recent pics And a short movie (click)

          alt text

          alt text

          alt text

          alt text

          1 Reply Last reply
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          • ChallengerC Offline
            ChallengerC Offline
            Challenger
            wrote on last edited by
            #9

            Lately I've been rebuilding brakes, currently waiting for the front & rear brake pump rebuild kits:

            alt text

            alt text

            1 Reply Last reply
            4
            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #10

              Looking phresh!

              Always Originate, Never Pirate!

              1 Reply Last reply
              0
              • NottsbikerN Offline
                NottsbikerN Offline
                Nottsbiker
                wrote on last edited by
                #11

                Just a word of caution - I bought a pattern rear brake rebuild kit for my dt200wr and the piston was too big and required machining to fit.

                Next time I'd go genuine all the way 😉

                ChallengerC 1 Reply Last reply
                0
                • Stevie WonderS Offline
                  Stevie WonderS Offline
                  Stevie Wonder
                  wrote on last edited by Stevie Wonder
                  #12

                  @Challenger As a Videographer and editor I cannot thank you enough for uploading a video to YouTube in 1080p @ 60fps and actually making a sick little edit. Good camera, audio and riding is everything needed to do the bike justice. I hadn’t actually realised until now that you where a member but I’d watched loads of your videos

                  Also what do you do to bring those callipers up nice like that?

                  1 Reply Last reply
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                  • NottsbikerN Nottsbiker

                    Just a word of caution - I bought a pattern rear brake rebuild kit for my dt200wr and the piston was too big and required machining to fit.

                    Next time I'd go genuine all the way 😉

                    ChallengerC Offline
                    ChallengerC Offline
                    Challenger
                    wrote on last edited by Challenger
                    #13

                    @Nottsbiker all caliper pistons are staying OEM, they were not worn out that much to replace them. I only changed seals(bought from the dealers) and I will also change the copper gaskets, brake pads bolts and rear brake pads. Im always using OEM rear brake pads as they seem to last the longest. Once I bought some aftermarket pads and they lasted one muddy ride. And they were also not the cheapest ones.
                    I also had to replace the rear brake caliper as one bolt that holds the pads was so stuck that it came off with the thread from caliper. I dont know why that happened as I unbolted it during the major bike rebuild but that happened. Good thing is that I have a stash of WR/DT parts so I just grabbed another one from the shelf. Now I will lubricate the thread before installing the bolt.

                    @Stevie-Wonder thanks for the comment. Generally Im into old car movies and car chases so I try to recreat that in a way by making a videos with my bikes. I often want to add some 80s music to my vids but even tho I have some great songs picked up I cant force myself to drown out that 2 stroke sound 😛
                    To clean the calipers I used Tenzi Alux and Dimer. I dont know if they are avaible in UK but the first one is for cleaning aluminium rims and the second one is a general vehicle parts cleaner sold as "active foam".

                    The thread will not die as Im thinking about the SM setup for this bike, and Im also building another 200cc bike. Currently Im waiting for some information from the guy thats the motorcycle wheels hero in my country.

                    1 Reply Last reply
                    0
                    • NottsbikerN Offline
                      NottsbikerN Offline
                      Nottsbiker
                      wrote on last edited by
                      #14

                      I already have a spare set of hubs ready for an SM build 😉

                      I'm also slowly gathering new / genuine body panels for a refresh at some point including doing the frame and all the suspension bushes.

                      In addition to the 200WR I also have a Belgarda TDR125 3sh in bits that I'm working on slowly as the parts come up across the EU. Already found an alloy swingarm from a DT200R for it and also looking for a 200R engine and exhaust set up for it but this is a slow burner as they are rare / expensive and I have a running 125 motor. The killer with this build is Belgarda parts are so hard to come by now.

                      What headlight / front mudguard combo will you run with SM wheels as the stock guard is way too long for SM but integrated with the orginal light surround? Currently I have DT125X complete light on mine with YZ guard but in black as cannot get white

                      ChallengerC 1 Reply Last reply
                      1
                      • NottsbikerN Nottsbiker

                        I already have a spare set of hubs ready for an SM build 😉

                        I'm also slowly gathering new / genuine body panels for a refresh at some point including doing the frame and all the suspension bushes.

                        In addition to the 200WR I also have a Belgarda TDR125 3sh in bits that I'm working on slowly as the parts come up across the EU. Already found an alloy swingarm from a DT200R for it and also looking for a 200R engine and exhaust set up for it but this is a slow burner as they are rare / expensive and I have a running 125 motor. The killer with this build is Belgarda parts are so hard to come by now.

                        What headlight / front mudguard combo will you run with SM wheels as the stock guard is way too long for SM but integrated with the orginal light surround? Currently I have DT125X complete light on mine with YZ guard but in black as cannot get white

                        ChallengerC Offline
                        ChallengerC Offline
                        Challenger
                        wrote on last edited by Challenger
                        #15

                        @Nottsbiker That sounds like a nice build and I even have all the parts you mentioned, but not for sale unfortunately 😛

                        If I instal SM setup I will definiately leave the oem mudguard and headlight. I still want the bike to have the original appearance. The brakes are all done and installed but I will have to replace the front brake hose, as the front brake still feels a little spongy.

                        Heres how my 200R swingarm came out:
                        alt text

                        1 Reply Last reply
                        1
                        • NottsbikerN Offline
                          NottsbikerN Offline
                          Nottsbiker
                          wrote on last edited by
                          #16

                          Looks tidy - assume that was with Scotchbrite or similar pads?

                          ChallengerC 1 Reply Last reply
                          0
                          • NottsbikerN Nottsbiker

                            Looks tidy - assume that was with Scotchbrite or similar pads?

                            ChallengerC Offline
                            ChallengerC Offline
                            Challenger
                            wrote on last edited by
                            #17

                            @Nottsbiker yeah, I used a tool that looks like that

                            alt text

                            ChallengerC 1 Reply Last reply
                            0
                            • ChallengerC Challenger

                              @Nottsbiker yeah, I used a tool that looks like that

                              alt text

                              ChallengerC Offline
                              ChallengerC Offline
                              Challenger
                              wrote on last edited by
                              #18

                              I totally love this bike

                              alt text

                              alt text

                              I have the front 17 wheel done:

                              alt text

                              And I will be using rear wheel from WR125X that fits bolt-on. Now Im saving money for the tires 😛

                              1 Reply Last reply
                              3
                              • NottsbikerN Offline
                                NottsbikerN Offline
                                Nottsbiker
                                wrote on last edited by Nottsbiker
                                #19

                                Looks great - I've got a pair of hubs lined up for mine later on this year but will go with having the pair built

                                I've also got a set needing doing for my Belgarda tdr but cant make up my mind if I should keep the odd 18 inch front rim or go 17 on that as well....

                                How much did the front cost you?

                                I bought a front hub for approx £50 and a rear for around £20 so I can keep my off road wheels (probably never use them again though).

                                ChallengerC 1 Reply Last reply
                                0
                                • NottsbikerN Nottsbiker

                                  Looks great - I've got a pair of hubs lined up for mine later on this year but will go with having the pair built

                                  I've also got a set needing doing for my Belgarda tdr but cant make up my mind if I should keep the odd 18 inch front rim or go 17 on that as well....

                                  How much did the front cost you?

                                  I bought a front hub for approx £50 and a rear for around £20 so I can keep my off road wheels (probably never use them again though).

                                  ChallengerC Offline
                                  ChallengerC Offline
                                  Challenger
                                  wrote on last edited by
                                  #20

                                  @Nottsbiker I dont think I will be using them that much, as I like going offroad on the WR much more, thats why Im not building any sick setup. I had a spare hub, bought the used rim from WR250X for 16£ 2 years ago(straight and no damage other than few scratches), and the guy took 63£ for making stainless steel spokes, painting the hub and putting it together. You can see that the 250X has a different hole drill patent so half of the spokes are a little bit bent.

                                  Id go for the 17 inch if you can afford buying some brand rims, or you can spot the bargain 🙂

                                  1 Reply Last reply
                                  1
                                  • ChallengerC Offline
                                    ChallengerC Offline
                                    Challenger
                                    wrote on last edited by Challenger
                                    #21

                                    So here it is, the hillbilly supermoto setup:

                                    alt text

                                    alt text

                                    alt text

                                    alt text

                                    alt text

                                    Stevie WonderS 1 Reply Last reply
                                    2
                                    • ChallengerC Challenger

                                      So here it is, the hillbilly supermoto setup:

                                      alt text

                                      alt text

                                      alt text

                                      alt text

                                      alt text

                                      Stevie WonderS Offline
                                      Stevie WonderS Offline
                                      Stevie Wonder
                                      wrote on last edited by
                                      #22

                                      @Challenger paint that front wheel gold, teal or that crazy 90’s purple it uses.

                                      Also I must add she is looking very very beautiful.

                                      ChallengerC 1 Reply Last reply
                                      0
                                      • Stevie WonderS Stevie Wonder

                                        @Challenger paint that front wheel gold, teal or that crazy 90’s purple it uses.

                                        Also I must add she is looking very very beautiful.

                                        ChallengerC Offline
                                        ChallengerC Offline
                                        Challenger
                                        wrote on last edited by
                                        #23

                                        @Stevie-Wonder I bought a gold front wheel from the WR125X but I dont think I will be changing the rim. After so many years of riding off-road only I forgot how to ride on tarmac tires. I changed the wheels back to '21 & '18 and had much more fun today.

                                        Here's the new video: https://youtu.be/8mSVx4xcvw4

                                        And soon I will be posting a new thread with the DT200R build 🙂

                                        Stevie WonderS 1 Reply Last reply
                                        1
                                        • CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #24

                                          Looks and sounds smart!

                                          Always Originate, Never Pirate!

                                          1 Reply Last reply
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