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DT125R FORUM

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  4. Break in new cylinder

Break in new cylinder

Scheduled Pinned Locked Moved Engine
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  • declanD declan

    @Irongamer727 and don’t worry about Fouling plugs if you add oil to the tank as well as autolube I was running 165ml of oil to 5ltr of fuel aswell as enriched auto lube for months with no issue I was a bit paranoid I don’t recommend doing it though

    Irongamer727I Offline
    Irongamer727I Offline
    Irongamer727
    wrote on last edited by
    #22

    @declan haha was that during your break in?

    declanD 1 Reply Last reply
    0
    • Irongamer727I Irongamer727

      @declan haha was that during your break in?

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #23

      @irongamer727 I never recorded hours or miles so yeah and also after break in @Calum made me stop lol

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      • Irongamer727I Offline
        Irongamer727I Offline
        Irongamer727
        wrote on last edited by
        #24

        O my god what a relief! Athena is up and running! Jesus Christ I have never ever been so afraid of something going wrong. Hopefully the worst part is over. Still afraid a circlip will come loose and mess EVERYTHING up. But, I've done my best, bring on the summer😁

        CalumC 1 Reply Last reply
        2
        • Irongamer727I Irongamer727

          O my god what a relief! Athena is up and running! Jesus Christ I have never ever been so afraid of something going wrong. Hopefully the worst part is over. Still afraid a circlip will come loose and mess EVERYTHING up. But, I've done my best, bring on the summer😁

          CalumC Online
          CalumC Online
          Calum
          wrote on last edited by
          #25

          @irongamer727 nice one bud.

          Always Originate, Never Pirate!

          1 Reply Last reply
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          • J Offline
            J Offline
            Jens Eskildsen
            wrote on last edited by
            #26

            Hopefully you will keep us updated with how you like it, as you clock some miles on her πŸ™‚

            Irongamer727I 1 Reply Last reply
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            • J Jens Eskildsen

              Hopefully you will keep us updated with how you like it, as you clock some miles on her πŸ™‚

              Irongamer727I Offline
              Irongamer727I Offline
              Irongamer727
              wrote on last edited by
              #27

              @jens-eskildsen sure will

              1 Reply Last reply
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              • Irongamer727I Offline
                Irongamer727I Offline
                Irongamer727
                wrote on last edited by
                #28

                I'm getting more acquainted with the brake in procedures. I've always thought you couldn't be too careful running an engine in. Obviously I was wrong. The fact that idling can glaze the bore scares me! I mean you need a good 20 minutes to bled the cooling system of air.
                Guess a moderate run in with a bit of variation of revs is preferable.

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                • CalumC Online
                  CalumC Online
                  Calum
                  wrote on last edited by
                  #29

                  I always thought it was giving it too much chst before thr rings have bedded in causes glazing.

                  Either way, get it runing and put some miles intonit before hammeringnit. That's my advice. Two strokes don't last forever so it's a moot point if it lasts +-1k miles. The main thing is getting that fueling spot on.

                  Always Originate, Never Pirate!

                  declanD 1 Reply Last reply
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                  • CalumC Calum

                    I always thought it was giving it too much chst before thr rings have bedded in causes glazing.

                    Either way, get it runing and put some miles intonit before hammeringnit. That's my advice. Two strokes don't last forever so it's a moot point if it lasts +-1k miles. The main thing is getting that fueling spot on.

                    declanD Offline
                    declanD Offline
                    declan
                    wrote on last edited by
                    #30

                    @calum 20 minutes to bleed the cooling it only took mine a few seconds

                    Irongamer727I 1 Reply Last reply
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                    • O Offline
                      O Offline
                      oldman
                      wrote on last edited by
                      #31

                      You should warm the engine thoroughly to make sure thermostat opens and gives full flow to water passages, otherwise pockets of air could remain

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                      • declanD declan

                        @calum 20 minutes to bleed the cooling it only took mine a few seconds

                        Irongamer727I Offline
                        Irongamer727I Offline
                        Irongamer727
                        wrote on last edited by
                        #32

                        @declan after 20 minutes there were still air left. But at that point I felt satisfied.

                        1 Reply Last reply
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                        • CalumC Online
                          CalumC Online
                          Calum
                          wrote on last edited by
                          #33

                          I don't think I've really actively bled the coolant system on any of my builds. Fire her up rad cap off, just top it up. Quick blip round the block top her up jobs a goodun

                          Always Originate, Never Pirate!

                          Irongamer727I declanD 3 Replies Last reply
                          0
                          • CalumC Calum

                            I don't think I've really actively bled the coolant system on any of my builds. Fire her up rad cap off, just top it up. Quick blip round the block top her up jobs a goodun

                            Irongamer727I Offline
                            Irongamer727I Offline
                            Irongamer727
                            wrote on last edited by
                            #34

                            @calum works for some

                            1 Reply Last reply
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                            • CalumC Calum

                              I don't think I've really actively bled the coolant system on any of my builds. Fire her up rad cap off, just top it up. Quick blip round the block top her up jobs a goodun

                              declanD Offline
                              declanD Offline
                              declan
                              wrote on last edited by
                              #35

                              @calum well I took my cap off started the bike and after a little bit the coolant expanded and started overflowing so it only took me a few seconds maybe 30s tops

                              Irongamer727I 1 Reply Last reply
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                              • declanD declan

                                @calum well I took my cap off started the bike and after a little bit the coolant expanded and started overflowing so it only took me a few seconds maybe 30s tops

                                Irongamer727I Offline
                                Irongamer727I Offline
                                Irongamer727
                                wrote on last edited by
                                #36

                                @declan ideally you want to warm it up to operating temperature with cap off. That way you know there won't be excessive amounts of air once you're out riding. My radiator started pissing out coolant through the overflow hose due to improper bleeding.

                                declanD 1 Reply Last reply
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                                • Irongamer727I Irongamer727

                                  @declan ideally you want to warm it up to operating temperature with cap off. That way you know there won't be excessive amounts of air once you're out riding. My radiator started pissing out coolant through the overflow hose due to improper bleeding.

                                  declanD Offline
                                  declanD Offline
                                  declan
                                  wrote on last edited by
                                  #37

                                  @irongamer727 so I just let it spill out?im pretty sure I managed to get all the air out of mine

                                  Irongamer727I 1 Reply Last reply
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                                  • declanD declan

                                    @irongamer727 so I just let it spill out?im pretty sure I managed to get all the air out of mine

                                    Irongamer727I Offline
                                    Irongamer727I Offline
                                    Irongamer727
                                    wrote on last edited by
                                    #38

                                    @declan lucky you! I'm only telling you what I experienced with my bike. πŸ˜‰

                                    1 Reply Last reply
                                    1
                                    • CalumC Calum

                                      I don't think I've really actively bled the coolant system on any of my builds. Fire her up rad cap off, just top it up. Quick blip round the block top her up jobs a goodun

                                      Irongamer727I Offline
                                      Irongamer727I Offline
                                      Irongamer727
                                      wrote on last edited by
                                      #39

                                      @calum you think it's possible to glaze the bore of a plated cylinder? (Nikasil)

                                      CalumC 1 Reply Last reply
                                      0
                                      • Irongamer727I Irongamer727

                                        @calum you think it's possible to glaze the bore of a plated cylinder? (Nikasil)

                                        CalumC Online
                                        CalumC Online
                                        Calum
                                        wrote on last edited by
                                        #40

                                        @irongamer727 Yes

                                        Always Originate, Never Pirate!

                                        Irongamer727I 1 Reply Last reply
                                        0
                                        • CalumC Calum

                                          @irongamer727 Yes

                                          Irongamer727I Offline
                                          Irongamer727I Offline
                                          Irongamer727
                                          wrote on last edited by
                                          #41

                                          @calum got dammit. I just want to start the bike, listen to it, set the idle and bleed the coolant. I have had it running for roughly 20 minutes on idle before so now I'm thinking of waiting until the snow disappears and then start braking it in.

                                          CalumC 1 Reply Last reply
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