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DT125R FORUM

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  4. Air box snorkel removed should I upjet

Air box snorkel removed should I upjet

Scheduled Pinned Locked Moved Engine
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  • CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #2

    The bike performs much better with the Snorkel in lol.

    That induction noise is not good.

    The bike was designed to run at 210, even with the DEP.

    The plug will tell you whether you need to upjet. The philisophy is that engines are going to be most performant on the leaner side of things, ensuring all combustiable mix is burnt.

    You add fuel to cool the piston crown, slow the burn, to reduce the risk of detonation.

    So unless you have a reason to, leave it standard.

    I would definitely refit the two boost bottles. Leave the powervalve earthed, get a DEP pipe and keep the snorkel.

    That's a pretty decent setup.

    If you want more power then you would want to ditch the carb and air box and get an underslung pipe, Zeeltronic ignition and ported barrel.

    That's the best way to get power.

    Always Originate, Never Pirate!

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    • R Offline
      R Offline
      reecesloane 2017
      wrote on last edited by
      #3

      I'm not after more power but when I put the snorkel on it splutters I was thinking of maybe getting a 230 snorkel I don't like the induction noise but I am used to it with crossers I wish the thing was full standard

      CalumC 1 Reply Last reply
      0
      • R reecesloane 2017

        I'm not after more power but when I put the snorkel on it splutters I was thinking of maybe getting a 230 snorkel I don't like the induction noise but I am used to it with crossers I wish the thing was full standard

        CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #4

        @reecesloane-2017 So 210 is fine, put the boost bottles back on should help it not splutter.

        Always Originate, Never Pirate!

        R 1 Reply Last reply
        0
        • R reecesloane 2017

          Hi I wondered if i could get some help I got my hands on a low mileage dtre I noticed the power valve earthed already boat boost bottles blanked and the snorkel
          Removed it actually goes very well and easy hits 75 but it seams to run hot should It be up
          Jetted the one in there now is 210 also plan of a full dep pipe thinking maybe I should go
          240 main it's a 2007 re I did buy a snorkel to replace it but with it on the bikes loses so much power and response I just don't want it on

          NINJAN Offline
          NINJAN Offline
          NINJA
          wrote on last edited by
          #5

          @reecesloane-2017 I lost 10mph off the top-end when I removed the boost bottle, they run much better with them on too. A 230 snorkel will help the air flow whilst retaining the stock inlet method. that option would be much better than having nothing. I would also stick with the 210 jets, the bike was designed to run with those and unless you are upgrading the whole engine, a larger jet is not worth the hassle really.

          SEDUCED BY THE DARK SIDE!!!

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          • Louis-DT-WRL Offline
            Louis-DT-WRL Offline
            Louis-DT-WR
            wrote on last edited by
            #6

            I cut the top off the airbox and rejetted and I did it felt more torque in the higher revs (I had a tmx30 carb with Vforce reeds) even before I installed the 200cc conversion. Sounds great, still very protected from dirt by the seat.

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            • CalumC Calum

              @reecesloane-2017 So 210 is fine, put the boost bottles back on should help it not splutter.

              R Offline
              R Offline
              reecesloane 2017
              wrote on last edited by
              #7

              @Calum I'll
              Have to buy one the bike came to me without them these arnt my mods but the last owners

              CalumC 1 Reply Last reply
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              • R reecesloane 2017

                @Calum I'll
                Have to buy one the bike came to me without them these arnt my mods but the last owners

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #8

                @reecesloane-2017 Yeah sure mate, as said I do have the correct boost bottle for the inlet over here if you want it.

                Did you not get my private message?

                Always Originate, Never Pirate!

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                • R Offline
                  R Offline
                  reecesloane 2017
                  wrote on last edited by
                  #9

                  No haven't received any mate

                  CalumC 1 Reply Last reply
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                  • R reecesloane 2017

                    No haven't received any mate

                    CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #10

                    @reecesloane-2017 How about now?

                    Always Originate, Never Pirate!

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                    • J Offline
                      J Offline
                      Jens Eskildsen
                      wrote on last edited by
                      #11

                      Mine runs cleaner with snorkel removed. But its always been slightly rich, and the stock 240 jet seems just a liiiitle bit to big for how my carb is set up.

                      1 Reply Last reply
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                      • R Offline
                        R Offline
                        reecesloane 2017
                        wrote on last edited by
                        #12

                        Mine has the 210

                        1 Reply Last reply
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