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DT125R FORUM

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  4. Yamaha DT125R '01 - Running Project

Yamaha DT125R '01 - Running Project

Scheduled Pinned Locked Moved DTR
portingignitech4dldtrwr200
135 Posts 27 Posters 86.0k Views 6 Watching
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  • DartyD Offline
    DartyD Offline
    Darty
    wrote on last edited by
    #47

    @Biker_123 DXF files were drawn using Solid Works, I'm not sure what programs you might have to open these, but send these to any good company and they should know what's going on.

    https://www.dropbox.com/s/6aropyq2sjczw0z/Tie Bar 130mm x 6mm 1.dxf?dl=0

    https://www.dropbox.com/s/0bj1uprutg8im74/TIE BAR 120mm x 6 Reform1.DXF?dl=0

    Enjoy!

    Next up is a custom intake, really needed I reckon 32-36mm intake,

    Will put up a plan after I get it made

    Keep it real

    Biker_123B 1 Reply Last reply
    1
    • D Offline
      D Offline
      Dt-r_Bradders
      wrote on last edited by
      #48

      What an awesome build man im loving this! top job m8y

      1 Reply Last reply
      1
      • DartyD Darty

        @Biker_123 DXF files were drawn using Solid Works, I'm not sure what programs you might have to open these, but send these to any good company and they should know what's going on.

        https://www.dropbox.com/s/6aropyq2sjczw0z/Tie Bar 130mm x 6mm 1.dxf?dl=0

        https://www.dropbox.com/s/0bj1uprutg8im74/TIE BAR 120mm x 6 Reform1.DXF?dl=0

        Enjoy!

        Next up is a custom intake, really needed I reckon 32-36mm intake,

        Will put up a plan after I get it made

        Biker_123B Offline
        Biker_123B Offline
        Biker_123
        wrote on last edited by
        #49

        @Darty Thanks man 🙂 I'll have a look at these on the comp! Much appreciated.

        Every problem has a solution

        1 Reply Last reply
        0
        • V Offline
          V Offline
          vtrn_raptor
          wrote on last edited by
          #50

          How did you make the bracket for the front brake

          DartyD 1 Reply Last reply
          0
          • V vtrn_raptor

            How did you make the bracket for the front brake

            DartyD Offline
            DartyD Offline
            Darty
            wrote on last edited by Darty
            #51

            @vtrn_raptor Hand sawed. filed, and machine sanded, you will need a Pillar drill!

            I've only got a sketch you can follow, dimensions are rough and only for a YZF125 caliper that was modified. should be 68.5mm of the fork. I use 15mm spacers now of the hanger.

            alt text

            I started with NEV's example for a DTX caliper, and modified the fitments. If you have a DTX caliper then NEV's dimensions should be on point for you.

            alt text

            Create mock-ups and check your offset position thoroughly, CNC Steel alloy is a better option than ally.

            Keep it real

            1 Reply Last reply
            1
            • V Offline
              V Offline
              vtrn_raptor
              wrote on last edited by
              #52

              I really need to find someone who can make me one for the standard dt brake caliper as I don't have to tool to do it myself:(

              1 Reply Last reply
              0
              • DartyD Darty

                Hi, Thank you.

                Yeah.. a Zeely would be nice to be honest.

                I have followed your project for a while and it is very impressive, I have had my DT for a couple of years now. And yeah completely stock (De-restricted) of course, has been the best performance so far. And to answer the question of the Pre -94' CDI vs Later years 99' on bikes. Well. It's pretty close between them haha. Good times.

                A little note, the older 3 wire DT's have a much more raw engine noise on tick over. Yamaha redesigned the stator motor with much else after 99'. Older models really have the right engine noise. Exhaust noise very much the same for all models on a DEP though, no missing out.

                alt text

                alt text

                Jeez. You should see the state of it now 7,000 miles later. I rode it hard. It is need of a full restoration. Mechanically supreme however. The fit and finish is the last thing I can be bothered with.

                alt text

                Hard hit.

                Yes. The Lanza. I've seen only ever seen about 3 or 4 on eVil bay. They were never really imported here much by anyone it looks like. I know Yamaha never sold em in the UK- like the DT200R(3ET). I could never find any parts. I am considering a DT200R Alloy swinger - from Australia.. That is the easiest weight saving option out there I think. But not sure. I want the wheel base to be a bit longer on it really, so an extra 2" of YZ alloy or WR and fettling time seems a more pleasing upgrade, but where do you stop. I cant make my mind up.

                Yeah still got my eyes on any TDR - TZRR stuff at the moment. It is getting the bigger inlet that would be a score for me.

                Anyway, I'll keep from talking about it and get some updates up here. I'll see if there is anything useful I know.

                Quickly as well, do you rate Mick Abbey tuning? Your barrel looked good but I don't want to rework anything.

                Thanks for the links.

                aidan1996A Offline
                aidan1996A Offline
                aidan1996
                wrote on last edited by
                #53

                @Darty hello
                would you say IGNITECH was a good upgrade and where do you buy it

                got a dtre x 2005

                DartyD 1 Reply Last reply
                0
                • aidan1996A aidan1996

                  @Darty hello
                  would you say IGNITECH was a good upgrade and where do you buy it

                  got a dtre x 2005

                  DartyD Offline
                  DartyD Offline
                  Darty
                  wrote on last edited by
                  #54

                  @aidan1996 I recommend it, try and learn a bit about Ignition Timing and Powervalve setup before you buy to make the most of it.

                  Ignitech systems are made to order, so just send them an Email and state your desired Model and/or loom type.

                  Keep it real

                  aidan1996A 1 Reply Last reply
                  0
                  • DartyD Darty

                    @aidan1996 I recommend it, try and learn a bit about Ignition Timing and Powervalve setup before you buy to make the most of it.

                    Ignitech systems are made to order, so just send them an Email and state your desired Model and/or loom type.

                    aidan1996A Offline
                    aidan1996A Offline
                    aidan1996
                    wrote on last edited by
                    #55

                    @Darty website???
                    zeeltronic or ignitech

                    would you say the ignitech made a difference from the stock cdi ypvs ????????????????

                    1 Reply Last reply
                    0
                    • CalumC Offline
                      CalumC Offline
                      Calum
                      wrote on last edited by
                      #56

                      A Custom ignition, either or, will be a dramatic improvement. Shouldn't be any difference.

                      Always Originate, Never Pirate!

                      1 Reply Last reply
                      0
                      • DartyD Offline
                        DartyD Offline
                        Darty
                        wrote on last edited by Darty
                        #57

                        Some little bits.

                        alt text

                        Removing material to clear the flanged nut I'm using off the fork leg for the correct position. Renewed this bit a while ago, the YZF carrier is not the best idea.

                        alt text

                        Finished setup for now, Lathed up 16mm Brass spacers and fitted together with 10.4 HT bolts.

                        alt text

                        98' YZ 250 1/4 throttle with billet alloy throttle tube, is plush like em snappy

                        alt text

                        New ceramic resistor.

                        alt text

                        Trying to keep Jap with a Denso W27ES-U plug. £1.70!

                        alt text

                        Call me the 'Artful bodger' Ran into some issues just using a capacitor to run the Ignitech. So strapped in ol' faithful in what's left of the only space available on the bike.

                        alt text

                        Slowly rebuilding my TM32. Sanded, wet sanded and polished internals.

                        alt text

                        alt text

                        Satisfied like glass. Giving a helping hand to the inevitable ingress of dirt to be combusted.

                        alt text

                        Remounting the WR rad, cutting the thermostat housing down, deleting the oil tank cap fixture from the support and shortening the rear radiator outlet futher to clear the tank. Then moving the whole thing forward to sit flush and safe.

                        alt text

                        Having alot of fun tearing it about, led me to ignore a serious issue. After letting the chain eat my original WR200 chain guide and very good condition Delta-box swinger, it was time to go back and fit plan A.
                        alt text

                        Drilled and M6 taped new mounts. Didn't feel like sacrilege after fucking it over already.

                        alt text

                        I wanted to do this for ages, fitting a YZ/WR 98'-02' chain guide looked to fit in my head. Can now replace it without having to take the swinger off, and readily available to replace now, as WR200 and early YZ 1990-94' sliders are rare, or silly money new.

                        alt text

                        Ugraded to RFX slider in blue, made from a hard polypropylene instead of silicone rubber. Should do the trick.

                        Running the airbox door removed and older 3MB airbox tract now with a 450 Main jet can you believe. It's now absolutely perfect with peak power dropping away at about 10,900rpm. She sings. Ready for my new ported top end. Looking to go full road racer at 12,600rpm with the larger carb.
                        alt text

                        Shortened the chain, back on a Steel sprocket with a 45T 520, good for 80 again which was missed,

                        alt text

                        I always preferred the original clutch cases, got a nice oil pump housing design. Had to use my 4DL one.

                        alt text

                        Standard (left) vs EBC's heavy duty clutch spring. Good upgrade, firm clutch with a quicker release.
                        alt text

                        New EBC clutch plates a while back had trashed my gearbox oil, found this, cause race bike..

                        alt text

                        Threaded insert and bolt for oil pump delete, re-sharpened foot pegs and brake pedal from the trail bike days.

                        Keep it real

                        CalumC 1 Reply Last reply
                        4
                        • DartyD Darty

                          Some little bits.

                          alt text

                          Removing material to clear the flanged nut I'm using off the fork leg for the correct position. Renewed this bit a while ago, the YZF carrier is not the best idea.

                          alt text

                          Finished setup for now, Lathed up 16mm Brass spacers and fitted together with 10.4 HT bolts.

                          alt text

                          98' YZ 250 1/4 throttle with billet alloy throttle tube, is plush like em snappy

                          alt text

                          New ceramic resistor.

                          alt text

                          Trying to keep Jap with a Denso W27ES-U plug. £1.70!

                          alt text

                          Call me the 'Artful bodger' Ran into some issues just using a capacitor to run the Ignitech. So strapped in ol' faithful in what's left of the only space available on the bike.

                          alt text

                          Slowly rebuilding my TM32. Sanded, wet sanded and polished internals.

                          alt text

                          alt text

                          Satisfied like glass. Giving a helping hand to the inevitable ingress of dirt to be combusted.

                          alt text

                          Remounting the WR rad, cutting the thermostat housing down, deleting the oil tank cap fixture from the support and shortening the rear radiator outlet futher to clear the tank. Then moving the whole thing forward to sit flush and safe.

                          alt text

                          Having alot of fun tearing it about, led me to ignore a serious issue. After letting the chain eat my original WR200 chain guide and very good condition Delta-box swinger, it was time to go back and fit plan A.
                          alt text

                          Drilled and M6 taped new mounts. Didn't feel like sacrilege after fucking it over already.

                          alt text

                          I wanted to do this for ages, fitting a YZ/WR 98'-02' chain guide looked to fit in my head. Can now replace it without having to take the swinger off, and readily available to replace now, as WR200 and early YZ 1990-94' sliders are rare, or silly money new.

                          alt text

                          Ugraded to RFX slider in blue, made from a hard polypropylene instead of silicone rubber. Should do the trick.

                          Running the airbox door removed and older 3MB airbox tract now with a 450 Main jet can you believe. It's now absolutely perfect with peak power dropping away at about 10,900rpm. She sings. Ready for my new ported top end. Looking to go full road racer at 12,600rpm with the larger carb.
                          alt text

                          Shortened the chain, back on a Steel sprocket with a 45T 520, good for 80 again which was missed,

                          alt text

                          I always preferred the original clutch cases, got a nice oil pump housing design. Had to use my 4DL one.

                          alt text

                          Standard (left) vs EBC's heavy duty clutch spring. Good upgrade, firm clutch with a quicker release.
                          alt text

                          New EBC clutch plates a while back had trashed my gearbox oil, found this, cause race bike..

                          alt text

                          Threaded insert and bolt for oil pump delete, re-sharpened foot pegs and brake pedal from the trail bike days.

                          CalumC Offline
                          CalumC Offline
                          Calum
                          wrote on last edited by
                          #58

                          @Darty Yes mate that's looking the tits!

                          Keep the updates rolling.

                          Always Originate, Never Pirate!

                          DartyD 1 Reply Last reply
                          0
                          • CalumC Calum

                            @Darty Yes mate that's looking the tits!

                            Keep the updates rolling.

                            DartyD Offline
                            DartyD Offline
                            Darty
                            wrote on last edited by
                            #59

                            @Calum Cheers yo, got some real nice goodies coming soon!

                            Keep it real

                            1 Reply Last reply
                            0
                            • Biker_123B Offline
                              Biker_123B Offline
                              Biker_123
                              wrote on last edited by
                              #60

                              Excellent work @Darty !! Good to see you doing more work to this beast.. Kinda worried now incase my chains been eating into my wr swing arm i will need to check tomorrow I've just been using the DTR chain slider on the wr swing arm hope its all good as I've been using the bike 24/7 lol.. Don't fancy getting rid of the capacitator by any chance now your using a battery again!? My capacitator is lost in the woods somewhere obviously wasn't secured enough 😆

                              Every problem has a solution

                              DartyD 1 Reply Last reply
                              0
                              • Biker_123B Biker_123

                                Excellent work @Darty !! Good to see you doing more work to this beast.. Kinda worried now incase my chains been eating into my wr swing arm i will need to check tomorrow I've just been using the DTR chain slider on the wr swing arm hope its all good as I've been using the bike 24/7 lol.. Don't fancy getting rid of the capacitator by any chance now your using a battery again!? My capacitator is lost in the woods somewhere obviously wasn't secured enough 😆

                                DartyD Offline
                                DartyD Offline
                                Darty
                                wrote on last edited by
                                #61

                                @Biker_123 I've been using mine to get to work everyday, such a laugh I had it jacked up to high, like a 93cm seat height through the chain geometry out, swing-arm was too big for front sprocket clearance it's alright otherwise.

                                shit man, get it bolted it under the seat xD I definitely got to hang on to my racing Capacitor, it was hand made from Greece

                                Keep it real

                                Biker_123B 1 Reply Last reply
                                0
                                • DartyD Darty

                                  @Biker_123 I've been using mine to get to work everyday, such a laugh I had it jacked up to high, like a 93cm seat height through the chain geometry out, swing-arm was too big for front sprocket clearance it's alright otherwise.

                                  shit man, get it bolted it under the seat xD I definitely got to hang on to my racing Capacitor, it was hand made from Greece

                                  Biker_123B Offline
                                  Biker_123B Offline
                                  Biker_123
                                  wrote on last edited by
                                  #62

                                  @Darty No problem haha had me worried about my swingarm for a bit there 😆.. I'll need to pick up another capacitator my local motorbike shop does them but needs to order them in so takes a while! Oh for sure it'll be getting secured better this time round 🙂

                                  Every problem has a solution

                                  1 Reply Last reply
                                  0
                                  • DartyD Offline
                                    DartyD Offline
                                    Darty
                                    wrote on last edited by Darty
                                    #63

                                    Yamaha DT230 Lanza - Air Duct (4TP-14437-00)

                                    Came all the way from Japan.

                                    alt text

                                    alt text

                                    alt text

                                    Keeping a controlled Air flow. Jetted, It works well with the 125R, highly recommended. All 170cc Kits should come with a larger duct.

                                    alt text

                                    Non existent Mikuni gaskets for TM32-34. So I made my own body gaskets.

                                    Built a TM34 aswell to try in the future.

                                    alt text

                                    Full rebuild. A TM32 and 34 have the same bodys so I can tune with both without another custom inlet for now.

                                    alt text

                                    hmmm. Got one of my 3MB-P-00 barrels transfers cleaned and Ports re-worked and polished.

                                    Off to get it Ported to a Top end tune, and having my 4DL P' cylinder head and Powervalve fettled with it.

                                    Full chassis rebuild and paint, so maybe by next Summer, she's done. Maybe...

                                    Keep it real

                                    1 Reply Last reply
                                    3
                                    • CalumC Offline
                                      CalumC Offline
                                      Calum
                                      wrote on last edited by
                                      #64

                                      Looks.like some healthy upgrades now. Should free up a pony or two that's for sure!

                                      Always Originate, Never Pirate!

                                      1 Reply Last reply
                                      0
                                      • DartyD Offline
                                        DartyD Offline
                                        Darty
                                        wrote on last edited by Darty
                                        #65

                                        The sooner it goes back together, the sooner it can be destroyed, that is what it's all about.

                                        alt text

                                        alt text

                                        It just doesn't fit anymore, and fried the wadding in 3 weeks.

                                        alt text

                                        RIP. DEP system.

                                        alt text

                                        The worst thing is having a Taxed and Insured Motorcycle that looks like this. Chassis needs work.

                                        alt text

                                        I can also illustrate the knarly fucking dent to the frame rail I found a few years ago.

                                        alt text

                                        WTF... How do you even?

                                        alt text

                                        That impact has twisted the down tube, its almost imperceptible, but the engine mounts tell me it's all been effected. I have seen worse before though, much worse! So still a really good base to build on.

                                        alt text

                                        Off comes the old barrel, honing marks are still there.

                                        alt text

                                        It ran perfect all of it's life. I ruined the mixture towards the end. The Powervalve was completely coked up. If you maintain these things they will see 14,000 miles on a set of rings.
                                        alt text

                                        It did heat seize once, didn't last long and never had any-more trouble.

                                        Found an unused WR400 headlight. What a score. Always fancied one.

                                        alt text

                                        Single bulb Enduro unit, so nothing special really.

                                        alt text

                                        WR vs RX, Not sure what I like more.
                                        alt text

                                        I found a good solution, 1987 YZ125 airboot.

                                        alt text

                                        Ready for a 34mm housing, so no more pod-filters, which are rubbish.

                                        alt text

                                        Ducati Brembo 4 pot caliper and Radial Master cylinder. Using a XT660X 320mm brake disc of my DTX hub, I will be able to sling the 4pot in there.

                                        alt text

                                        KPmotosolutions did a nice job. Ported, Port timings revised, Squish revised, crown re-machined, and powervalve revised. Tis a little beast.

                                        alt text

                                        All out for top end, It's a 134cc race tuned still to run on regular 97 octane. The Squish height is at 0.6mm. It's pretty extreme. I'm running a Wossner piston kit for some protection over detonation, Still good for a pounding, I except to blow it up.

                                        alt text

                                        The old Mitaka had created some damage before hand,

                                        alt text

                                        alt text

                                        Mitaka vs Wossner. The quality of these forged pistons is really very good.

                                        alt text

                                        alt text

                                        alt text

                                        alt text

                                        alt text

                                        alt text

                                        Shes going to run pretty good. I challenge a 170 kit to outperform this.

                                        alt text

                                        PowerValve clean up and modified with exhaust port.

                                        alt text

                                        alt text

                                        alt text

                                        Both a TZR125RR 4DL 3MB-P-00s, but one is a later Y-2 version with a Non Stamped head, which suggests it came of Belgarda TDR. It's a good baseline.

                                        alt text

                                        I've done a rough sketch of the port timings between the standard barrel and the reworked one.

                                        alt text

                                        alt text

                                        I had the Top end blasted, and what a difference, worth doing for the money. Now I need an exhaust...

                                        Keep it real

                                        1 Reply Last reply
                                        3
                                        • CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #66

                                          @andrew1680 Plug and play bud

                                          Always Originate, Never Pirate!

                                          1 Reply Last reply
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