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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
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  • S SpookDog

    @spookdog

    500 miles run in

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    SpookDog
    wrote on last edited by SpookDog
    #94

    @spookdog

    I just got a 400 Kenda rear tyre. Am I going to regret it? Does the Dtr take a 400 tyre ok?

    S 1 Reply Last reply
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    • S SpookDog

      @spookdog

      I just got a 400 Kenda rear tyre. Am I going to regret it? Does the Dtr take a 400 tyre ok?

      S Offline
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      SpookDog
      wrote on last edited by
      #95

      Anyone used rust converter on exhaust downpipe?...

      R NottsbikerN Stevie WonderS markus.wM 4 Replies Last reply
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      • S SpookDog

        Anyone used rust converter on exhaust downpipe?...

        R Offline
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        rollzy101
        wrote on last edited by
        #96

        @spookdog if its rust converter mine burnt and pealed off, ended up using acid based rust remover which was fine

        Owned: Yamaha DT125LC, XT125, DT125R, YZF R125, CBR125, RS125

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        • S SpookDog

          Anyone used rust converter on exhaust downpipe?...

          NottsbikerN Offline
          NottsbikerN Offline
          Nottsbiker
          wrote on last edited by
          #97

          @spookdog I've used the Loctite stuff before but its not very good, apparently Jennolite (sp?) is meant to be much better. Probably better to get blasted then paint immediately afterwards

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          • S SpookDog

            Anyone used rust converter on exhaust downpipe?...

            Stevie WonderS Offline
            Stevie WonderS Offline
            Stevie Wonder
            wrote on last edited by
            #98

            @spookdog said in So Close!...:

            Anyone used rust converter on exhaust downpipe?...

            Use harpic x10, a few of my mates use it on their WR125’s to get all the road grim that builds up and allow the pipe to bronze a nice colour however I’ve been told it’s known to strip stainless of its stainless ability so I’d also recommend getting your hands on some ACF50

            NottsbikerN 1 Reply Last reply
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            • Stevie WonderS Stevie Wonder

              @spookdog said in So Close!...:

              Anyone used rust converter on exhaust downpipe?...

              Use harpic x10, a few of my mates use it on their WR125’s to get all the road grim that builds up and allow the pipe to bronze a nice colour however I’ve been told it’s known to strip stainless of its stainless ability so I’d also recommend getting your hands on some ACF50

              NottsbikerN Offline
              NottsbikerN Offline
              Nottsbiker
              wrote on last edited by
              #99

              @stevie-wonder Harpic is brutal but effective - it will mark the chrome on forks its that acidic. If you use it you must paint straight after as its bare metal which will immediately rust again

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              • NottsbikerN Nottsbiker

                @stevie-wonder Harpic is brutal but effective - it will mark the chrome on forks its that acidic. If you use it you must paint straight after as its bare metal which will immediately rust again

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                SpookDog
                wrote on last edited by
                #100

                Cheers guys!

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                • S SpookDog

                  Anyone used rust converter on exhaust downpipe?...

                  markus.wM Offline
                  markus.wM Offline
                  markus.w
                  wrote on last edited by
                  #101

                  @spookdog I used Hammerite kurust on my Dep downpipe that had rusted really bad at the header. It's a brush on rust converter that transforms the rust into a stable material. It turns it black then you paint it. Done at the start of this year and all good so far. £5 from Halfords.

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

                    @spookdog I used Hammerite kurust on my Dep downpipe that had rusted really bad at the header. It's a brush on rust converter that transforms the rust into a stable material. It turns it black then you paint it. Done at the start of this year and all good so far. £5 from Halfords.

                    Stevie WonderS Offline
                    Stevie WonderS Offline
                    Stevie Wonder
                    wrote on last edited by Stevie Wonder
                    #102

                    @markus-w said in So Close!...:

                    @spookdog I used Hammerite kurust on my Dep downpipe that had rusted really bad at the header. It's a brush on rust converter that transforms the rust into a stable material. It turns it black then you paint it. Done at the start of this year and all good so far. £5 from Halfords.

                    Pretty sure hammerite also do a gel rust converter, simply apply, let it’s do it’s thing then get to going at it with some good old fashion elbow grease. £15 I think (bit pricey) perfectly safe on paint and being the fact it’s a gel it’s rather ideal for leaving on in those hard to reach areas and fiddly bits

                    Also @Nottsbiker jheez. strong stuff then, I’m surprised it’s sold so freely over the counter if that’s the case

                    NottsbikerN 1 Reply Last reply
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                    • Stevie WonderS Stevie Wonder

                      @markus-w said in So Close!...:

                      @spookdog I used Hammerite kurust on my Dep downpipe that had rusted really bad at the header. It's a brush on rust converter that transforms the rust into a stable material. It turns it black then you paint it. Done at the start of this year and all good so far. £5 from Halfords.

                      Pretty sure hammerite also do a gel rust converter, simply apply, let it’s do it’s thing then get to going at it with some good old fashion elbow grease. £15 I think (bit pricey) perfectly safe on paint and being the fact it’s a gel it’s rather ideal for leaving on in those hard to reach areas and fiddly bits

                      Also @Nottsbiker jheez. strong stuff then, I’m surprised it’s sold so freely over the counter if that’s the case

                      NottsbikerN Offline
                      NottsbikerN Offline
                      Nottsbiker
                      wrote on last edited by
                      #103

                      @stevie-wonder its good for the price, you just have to be careful and only use it on the right parts

                      S 1 Reply Last reply
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                      • NottsbikerN Nottsbiker

                        @stevie-wonder its good for the price, you just have to be careful and only use it on the right parts

                        S Offline
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                        SpookDog
                        wrote on last edited by
                        #104

                        I had a good score recently, I got a 3mb barrel with a perfectly good piston in it that has 3mb embossed on the inside skirt, so I’m guessing it’s original? It also has the power valve, pulley & cover/housing as well as the cables with a 3wire servo connected!! (Rubber cover pristine) all still fitted. Also there is a perfect 3mb head 🙂 £130 off of fleabay! Of all places...

                        The point is, I was warming it up to remove the temp sensor and I realised it doesn’t have 3mb stamped on it. Looked closer and the head and barrel are P stamped. Someone told me about this before but I can’t remember the details. I think it was originally a TZR top end? Did they come with servo fitted?

                        Stevie WonderS 1 Reply Last reply
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                        • S SpookDog

                          I had a good score recently, I got a 3mb barrel with a perfectly good piston in it that has 3mb embossed on the inside skirt, so I’m guessing it’s original? It also has the power valve, pulley & cover/housing as well as the cables with a 3wire servo connected!! (Rubber cover pristine) all still fitted. Also there is a perfect 3mb head 🙂 £130 off of fleabay! Of all places...

                          The point is, I was warming it up to remove the temp sensor and I realised it doesn’t have 3mb stamped on it. Looked closer and the head and barrel are P stamped. Someone told me about this before but I can’t remember the details. I think it was originally a TZR top end? Did they come with servo fitted?

                          Stevie WonderS Offline
                          Stevie WonderS Offline
                          Stevie Wonder
                          wrote on last edited by
                          #105

                          @SpookDog 4DL Series 1 TZR125RR, cast in Italy by polini/minarelli (the italian cast 3mb barrels are a much worse quality in terms of the quality of the cast). The 4DL heads are blank on top with nothing but a P stamp on the side. The original 4DL power valves are the same as the DTR however the powervalve housing has a motor minarelli stamp on the cover that’s both original and unique to the 4DL Series 1. It’s also a nice metallic grey colour too.

                          Fun fact when I sold my TZR P top end I nicked the cover off it and sold it without just for that reason, makes not a sods worth of difference but oh well 😂

                          CalumC S 2 Replies Last reply
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                          • Stevie WonderS Stevie Wonder

                            @SpookDog 4DL Series 1 TZR125RR, cast in Italy by polini/minarelli (the italian cast 3mb barrels are a much worse quality in terms of the quality of the cast). The 4DL heads are blank on top with nothing but a P stamp on the side. The original 4DL power valves are the same as the DTR however the powervalve housing has a motor minarelli stamp on the cover that’s both original and unique to the 4DL Series 1. It’s also a nice metallic grey colour too.

                            Fun fact when I sold my TZR P top end I nicked the cover off it and sold it without just for that reason, makes not a sods worth of difference but oh well 😂

                            CalumC Online
                            CalumC Online
                            Calum
                            wrote on last edited by
                            #106

                            @Stevie-Wonder The TZR 3MB00P Barrel also had a 1mm raised exhaust port timing. And the connecting rods are slightly different

                            Always Originate, Never Pirate!

                            1 Reply Last reply
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                            • Stevie WonderS Stevie Wonder

                              @SpookDog 4DL Series 1 TZR125RR, cast in Italy by polini/minarelli (the italian cast 3mb barrels are a much worse quality in terms of the quality of the cast). The 4DL heads are blank on top with nothing but a P stamp on the side. The original 4DL power valves are the same as the DTR however the powervalve housing has a motor minarelli stamp on the cover that’s both original and unique to the 4DL Series 1. It’s also a nice metallic grey colour too.

                              Fun fact when I sold my TZR P top end I nicked the cover off it and sold it without just for that reason, makes not a sods worth of difference but oh well 😂

                              S Offline
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                              SpookDog
                              wrote on last edited by SpookDog
                              #107

                              @Stevie-Wonder

                              Do you mean the pulley cover, or the right foot side cap? The cap on mine is a bit mangled and sealed with silicon 😐 it’s the only down side I can see...
                              Yep, the head is blank except for the P. The barrel has the P stamped in the middle of the 3mb bit...

                              @Calum

                              Do you mean the Conrod itself or the crank throw? (Stroke)...

                              Is this P stamp a good thing or a problem waiting to happen?...

                              CalumC 1 Reply Last reply
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                              • S SpookDog

                                @Stevie-Wonder

                                Do you mean the pulley cover, or the right foot side cap? The cap on mine is a bit mangled and sealed with silicon 😐 it’s the only down side I can see...
                                Yep, the head is blank except for the P. The barrel has the P stamped in the middle of the 3mb bit...

                                @Calum

                                Do you mean the Conrod itself or the crank throw? (Stroke)...

                                Is this P stamp a good thing or a problem waiting to happen?...

                                CalumC Online
                                CalumC Online
                                Calum
                                wrote on last edited by
                                #108

                                @SpookDog It's a good thing if it's a genuine Motoriminarelli Barrel.

                                Sorry, the cranks are ever so slightly narrower. I had to have the stock 3MB rod whittled down to fit. But don't worry, cylinder + Heads are interchangeable.

                                Always Originate, Never Pirate!

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                                • CalumC Calum

                                  @SpookDog It's a good thing if it's a genuine Motoriminarelli Barrel.

                                  Sorry, the cranks are ever so slightly narrower. I had to have the stock 3MB rod whittled down to fit. But don't worry, cylinder + Heads are interchangeable.

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                                  SpookDog
                                  wrote on last edited by SpookDog
                                  #109

                                  Wow! Just took my head off and do you live and learn! I don’t have dome nuts for my head so I’ve been using normal ones, they’ve been letting the road water and rock salt (from a month or two ago) leak down into the studs and cause enough corrosion to lift the nut at the front of the engine! I put new studs in and the back four are still shiny! The front one has white crud like you get on battery terminals all the way down it past the threads!
                                  It must of acted like frost in a crack in stone and forced it apart!
                                  So much white crud!...

                                  S 1 Reply Last reply
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                                  • S SpookDog

                                    Wow! Just took my head off and do you live and learn! I don’t have dome nuts for my head so I’ve been using normal ones, they’ve been letting the road water and rock salt (from a month or two ago) leak down into the studs and cause enough corrosion to lift the nut at the front of the engine! I put new studs in and the back four are still shiny! The front one has white crud like you get on battery terminals all the way down it past the threads!
                                    It must of acted like frost in a crack in stone and forced it apart!
                                    So much white crud!...

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                                    SpookDog
                                    wrote on last edited by
                                    #110

                                    Are there any stainless steel exhausts on the market at the mo? I actually have searched but everything seems to be 10 years ago. Can’t find anything recent...

                                    CalumC 1 Reply Last reply
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                                    • S SpookDog

                                      Are there any stainless steel exhausts on the market at the mo? I actually have searched but everything seems to be 10 years ago. Can’t find anything recent...

                                      CalumC Online
                                      CalumC Online
                                      Calum
                                      wrote on last edited by
                                      #111

                                      @SpookDog What about Arrow? Titanium End Cans for those as well

                                      https://www.arrow.it/en/assembled/746/Yamaha-DT-125-X-2004-2006
                                      alt text

                                      Always Originate, Never Pirate!

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                                      • CalumC Online
                                        CalumC Online
                                        Calum
                                        wrote on last edited by
                                        #112

                                        @SpookDog Althought they aren't Stainless.

                                        Romeu makes Stainless Steel pipes.

                                        https://www.ebay.ie/usr/romeu125?_trksid=p2047675.m3561.l2559

                                        alt text

                                        But he seemed to have stopped selling any on his page. If you PM him on eBay though....

                                        Always Originate, Never Pirate!

                                        S 1 Reply Last reply
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                                        • CalumC Calum

                                          @SpookDog Althought they aren't Stainless.

                                          Romeu makes Stainless Steel pipes.

                                          https://www.ebay.ie/usr/romeu125?_trksid=p2047675.m3561.l2559

                                          alt text

                                          But he seemed to have stopped selling any on his page. If you PM him on eBay though....

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                                          SpookDog
                                          wrote on last edited by SpookDog
                                          #113

                                          You live and learn, continuously it seems! I’ve since found out that the carb on my bike is a 1999~2003 variation. It should have 240 main & a 25 pilot jet. Not only that, it seems to like it! It’s running sweeter, which only makes me wonder about my previous escapades with a 17.5 pilot jet. Let alone the 180 main and 22.5 it had when I first got it 🙄
                                          Also it seems a previous owner repacked the tailpipe themselves and didn’t just use proper wadding, they literally bound the perforated baffle with wire wool so tight that the fibre wadding was pristine and the exhaust was ‘Braap, Braap, Braaappping’. Might as well of been a straight through pipe...

                                          What I guess I’m getting at is that you can work out and mend what has gone wrong, but sussing out what other people have made wrong isn’t quite as easy. Just one of the joys of a project bike I s’pose...

                                          I just gone an got a 4hw TZR125 basket case.. I must be a machinochist!!
                                          🐾

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