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DT125R FORUM

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  4. My DT125 80s Yz style DT200 build one to watch!

My DT125 80s Yz style DT200 build one to watch!

Scheduled Pinned Locked Moved DTR
233 Posts 17 Posters 56.0k Views 3 Watching
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  • M mhbikesnbits

    Pretty much got the engine built just need do some finishing touches on it and order couple of other bits I used high quality bearings and seals and all genuine Yamaha gaskets including the head gasket.

    Bore was in good condition I used a 68mm wosner piston To replace the old one

    Thinking of putting it on the frame with no oil all in as I’m thinking of setting the clutch up all In one go once the clutch perch and cable is installed with the clutch having 3 places to to adjust it

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    markus.wM Offline
    markus.wM Offline
    markus.w
    wrote on last edited by
    #139

    @mhbikesnbits looking real nice mate this going to be a quality build. I'm liking the black powder coat on all the engine parts. 68mm piston you say, would that be 200cc? Or even I'm thinking 200cc oversize?

    M 1 Reply Last reply
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    • markus.wM markus.w

      @mhbikesnbits looking real nice mate this going to be a quality build. I'm liking the black powder coat on all the engine parts. 68mm piston you say, would that be 200cc? Or even I'm thinking 200cc oversize?

      M Offline
      M Offline
      mhbikesnbits
      wrote on last edited by
      #140

      @markus-w cheers pal I hope it’s going to look quality the money I’ve spent so far 😂, it is a 200 e engine yes unsure what the stock size from the factory is tbh or if it’s been bored out or anything

      markus.wM 2 Replies Last reply
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      • S SpookDog

        @mhbikesnbits

        It was only an old Audi 90 10v that I went OCD on. I put a gas flowed head on it with a fat cam and lowered it. Some horrible little crackhead weighted it in when I got made homeless and wasn’t around, back when the price of scrap went crazy (2010?)
        Shtuff happens! 🤨 ...

        M Offline
        M Offline
        mhbikesnbits
        wrote on last edited by
        #141

        @SpookDog what a shame bet you were gutted when you found it was gone

        1 Reply Last reply
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        • M mhbikesnbits

          @markus-w cheers pal I hope it’s going to look quality the money I’ve spent so far 😂, it is a 200 e engine yes unsure what the stock size from the factory is tbh or if it’s been bored out or anything

          markus.wM Offline
          markus.wM Offline
          markus.w
          wrote on last edited by
          #142

          @mhbikesnbits I think standard is 66mm.

          M 1 Reply Last reply
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          • markus.wM markus.w

            @mhbikesnbits I think standard is 66mm.

            M Offline
            M Offline
            mhbikesnbits
            wrote on last edited by
            #143

            @markus-w can’t wait kick it in tbh see what the engine can do

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            • M mhbikesnbits

              @markus-w cheers pal I hope it’s going to look quality the money I’ve spent so far 😂, it is a 200 e engine yes unsure what the stock size from the factory is tbh or if it’s been bored out or anything

              markus.wM Offline
              markus.wM Offline
              markus.w
              wrote on last edited by
              #144

              @mhbikesnbits I've just done the maths on it. A standard 200cc barrel is actually 195cc (65.98mm piston) a 68mm bore would make it 207cc so a difference of 12cc. Should be quite noticeable.

              M 1 Reply Last reply
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              • markus.wM markus.w

                @mhbikesnbits I've just done the maths on it. A standard 200cc barrel is actually 195cc (65.98mm piston) a 68mm bore would make it 207cc so a difference of 12cc. Should be quite noticeable.

                M Offline
                M Offline
                mhbikesnbits
                wrote on last edited by
                #145

                @markus-w you’ve got be excited now 😂

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                • M Offline
                  M Offline
                  mhbikesnbits
                  wrote on last edited by
                  #146

                  This gets the rattle can treatment it’s only for holding a pipe 😂

                  Bit sloppy tbh compared to other things but going to go with a silver paint, may get one later down the Line powder coated, just want to get that engine in the frame asap

                  alt text

                  S 1 Reply Last reply
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                  • M Offline
                    M Offline
                    mhbikesnbits
                    wrote on last edited by mhbikesnbits
                    #147

                    When we had a nice bout of sun the other day I sat in the garden, and started the lovely job of polishing the lower triple clamp.

                    Pictures don’t really show the finish very good looks far better in person

                    I started with 200 wet and dry and worked my way up to 1000 and finished with a hand polish of some mothers and mag.

                    The top of the clamp is black powder coated

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                    Once the engines dropped in I can get the clamps in because the weight of them will probably drag the frame over now.

                    My next task will be probably getting all the handle bars in the and switch gear. I’m going with some pro taper gear for the handle bars.

                    1 Reply Last reply
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                    • M mhbikesnbits

                      This gets the rattle can treatment it’s only for holding a pipe 😂

                      Bit sloppy tbh compared to other things but going to go with a silver paint, may get one later down the Line powder coated, just want to get that engine in the frame asap

                      alt text

                      S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by SpookDog
                      #148

                      @mhbikesnbits

                      It definitely warrants better treatment! 😜

                      Poor things always seem to corrode under the pipe, before the clamp...

                      But yeah! Bung it on!!...

                      PS. You gonna lacquer the bottom yoke?...

                      M 2 Replies Last reply
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                      • S SpookDog

                        @mhbikesnbits

                        It definitely warrants better treatment! 😜

                        Poor things always seem to corrode under the pipe, before the clamp...

                        But yeah! Bung it on!!...

                        PS. You gonna lacquer the bottom yoke?...

                        M Offline
                        M Offline
                        mhbikesnbits
                        wrote on last edited by
                        #149

                        @SpookDog now I’m thinking make one on the cnc machine would look pretty bad ass

                        1 Reply Last reply
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                        • S SpookDog

                          @mhbikesnbits

                          It definitely warrants better treatment! 😜

                          Poor things always seem to corrode under the pipe, before the clamp...

                          But yeah! Bung it on!!...

                          PS. You gonna lacquer the bottom yoke?...

                          M Offline
                          M Offline
                          mhbikesnbits
                          wrote on last edited by
                          #150

                          @SpookDog lacquer… hmm never give it a thought to protect the shine ?

                          1 Reply Last reply
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                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by Calum
                            #151

                            Bottom yokes have come up nicely! It should hold its shine for a wee while but it's always the way with those things.

                            The pro taper handlebars are nice to be fair.

                            Always Originate, Never Pirate!

                            M 1 Reply Last reply
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                            • CalumC Calum

                              Bottom yokes have come up nicely! It should hold its shine for a wee while but it's always the way with those things.

                              The pro taper handlebars are nice to be fair.

                              M Offline
                              M Offline
                              mhbikesnbits
                              wrote on last edited by
                              #152

                              @Calum bike will be kept inside and probably only ride on the nicer weather days so hopefully this will help it last longer

                              markus.wM 1 Reply Last reply
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                              • M mhbikesnbits

                                @Calum bike will be kept inside and probably only ride on the nicer weather days so hopefully this will help it last longer

                                markus.wM Offline
                                markus.wM Offline
                                markus.w
                                wrote on last edited by
                                #153

                                @mhbikesnbits still won't take long to lose the shine. Lacquer would work well. It looks really good polished and I really don't want to come across like I'm picking but would it not look better with the top and bottom yokes the same colour? IE both black with the chrome forks? Personal preference I know but I'm trying to picture it in my head.

                                M 2 Replies Last reply
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                                • markus.wM markus.w

                                  @mhbikesnbits still won't take long to lose the shine. Lacquer would work well. It looks really good polished and I really don't want to come across like I'm picking but would it not look better with the top and bottom yokes the same colour? IE both black with the chrome forks? Personal preference I know but I'm trying to picture it in my head.

                                  M Offline
                                  M Offline
                                  mhbikesnbits
                                  wrote on last edited by
                                  #154

                                  @markus-w hmm maybe could try the lacquer, I’m going with the black top polished bottom as that was the style it was on the 80s yzs

                                  markus.wM 1 Reply Last reply
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                                  • markus.wM markus.w

                                    @mhbikesnbits still won't take long to lose the shine. Lacquer would work well. It looks really good polished and I really don't want to come across like I'm picking but would it not look better with the top and bottom yokes the same colour? IE both black with the chrome forks? Personal preference I know but I'm trying to picture it in my head.

                                    M Offline
                                    M Offline
                                    mhbikesnbits
                                    wrote on last edited by mhbikesnbits
                                    #155

                                    @markus-w maybe this will give you abit more of idea what it would look like,

                                    I have a little think about the lacquering and my only issue is paint doesn’t like smooth surfaces so would it end up getting lacquer peel ?

                                    alt text

                                    markus.wM CalumC 2 Replies Last reply
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                                    • M mhbikesnbits

                                      @markus-w hmm maybe could try the lacquer, I’m going with the black top polished bottom as that was the style it was on the 80s yzs

                                      markus.wM Offline
                                      markus.wM Offline
                                      markus.w
                                      wrote on last edited by
                                      #156

                                      @mhbikesnbits fair enough it is the yz look you are going for. Does look good.

                                      1 Reply Last reply
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                                      • M mhbikesnbits

                                        @markus-w maybe this will give you abit more of idea what it would look like,

                                        I have a little think about the lacquering and my only issue is paint doesn’t like smooth surfaces so would it end up getting lacquer peel ?

                                        alt text

                                        markus.wM Offline
                                        markus.wM Offline
                                        markus.w
                                        wrote on last edited by
                                        #157

                                        @mhbikesnbits yes I know what you're saying about peeling because that would look awful. I polished my brake calipers and opted against lacquer for that reason. But I realised after that they use lacquer on alloy wheels on cars, not sure which lacquer but that doesn't peel.

                                        1 Reply Last reply
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                                        • M mhbikesnbits

                                          @markus-w maybe this will give you abit more of idea what it would look like,

                                          I have a little think about the lacquering and my only issue is paint doesn’t like smooth surfaces so would it end up getting lacquer peel ?

                                          alt text

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #158

                                          @mhbikesnbits Yes! That looks so good polished!

                                          I am looking forward to seeing this progress!

                                          Keep up the updates.

                                          Always Originate, Never Pirate!

                                          M 1 Reply Last reply
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