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DT125R FORUM

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  4. Dt170 vs ktm exc 125

Dt170 vs ktm exc 125

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  • declanD declan

    @darty snorkel is doing a great job there bud 😂😂

    DartyD Offline
    DartyD Offline
    Darty
    wrote on last edited by
    #85

    @declan The snorkel still helps to stabilise air flow, even with a Lanza 230 snorkel, You just cant get enough air through it!

    Airbox is quite restrictive when your tuning these,

    Keep it real

    1 Reply Last reply
    2
    • NINJAN Offline
      NINJAN Offline
      NINJA
      wrote on last edited by
      #86

      I am always confused as to how any air is sucked in with the air box and snorkel system? To me is looks to be pointing in the wrong direction and I always feel that the rider and seat will reduce airflow around that area too. But I guess it is not too restrictive as all bikes perform extremely well with the air box and snorkel set-up. Has anyone tried small air scoops on the side of the air box to draw air into the box at all ???

      SEDUCED BY THE DARK SIDE!!!

      CalumC 1 Reply Last reply
      0
      • NINJAN NINJA

        I am always confused as to how any air is sucked in with the air box and snorkel system? To me is looks to be pointing in the wrong direction and I always feel that the rider and seat will reduce airflow around that area too. But I guess it is not too restrictive as all bikes perform extremely well with the air box and snorkel set-up. Has anyone tried small air scoops on the side of the air box to draw air into the box at all ???

        CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #87

        @ninja Ahem, RAM AIR.

        Also Aprilia RS125's do this. They take a scoop from the nose cone, and force it into the air box lol.

        But you can get nasty negative air pressure coefficients that cause adverse effects.

        Always Originate, Never Pirate!

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        0
        • Glynn123G Offline
          Glynn123G Offline
          Glynn123
          wrote on last edited by
          #88

          I removed my airbox snorkel and upjetted carb, very good sound and possibly abit more power? Not noticeable mind but does sound brilliant.

          S 1 Reply Last reply
          0
          • Irongamer727I Irongamer727

            @scrimsmustang don't think it will win over a wr200 but you're right, they are powerful. I Wonder how Honda manages to squeeze out 30 bhp and how Yamaha only ~20 bhp. Seems odd.

            S Offline
            S Offline
            scrimsmustang
            wrote on last edited by scrimsmustang
            #89

            @irongamer727 said in Dt170 vs ktm exc 125:

            @scrimsmustang don't think it will win over a wr200 but you're right, they are powerful. I Wonder how Honda manages to squeeze out 30 bhp and how Yamaha only ~20 bhp. Seems odd.

            CRM will piss over the WR200 ive had a fair few 200,s and the Honda would just laugh at the 200, 125 or not.

            Poo DT200WR compared to CRM
            alt text

            Poo WR200R compared to CRM
            alt text

            Mint CRM125R
            alt text

            1 Reply Last reply
            1
            • Glynn123G Glynn123

              I removed my airbox snorkel and upjetted carb, very good sound and possibly abit more power? Not noticeable mind but does sound brilliant.

              S Offline
              S Offline
              scrimsmustang
              wrote on last edited by
              #90

              @glynn123 said in Dt170 vs ktm exc 125:

              I removed my airbox snorkel and upjetted carb, very good sound and possibly abit more power? Not noticeable mind but does sound brilliant.

              Its the mixture screw and pilot jet you need to tweek when you remove the snorkel on a DTR mostly as they bog down at low rpm due to the air rich mixture, dial it out and you get a lot better low down acceleration.

              Glynn123G 1 Reply Last reply
              1
              • D DTR+NSR

                I doubt the crm has a genuine 30bhp. I've got a nsr125 with basically the same engine as the crm. Doesn't 'feel' that much faster than my dtr, wether that's just down to the gearing, as the nsr has alot longer legs.

                S Offline
                S Offline
                scrimsmustang
                wrote on last edited by
                #91

                @dtr-nsr said in Dt170 vs ktm exc 125:

                I doubt the crm has a genuine 30bhp. I've got a nsr125 with basically the same engine as the crm. Doesn't 'feel' that much faster than my dtr, wether that's just down to the gearing, as the nsr has alot longer legs.

                Is the NSR derestricted properly ? Should pull atleast 110 derestricted

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                0
                • D Offline
                  D Offline
                  DTR+NSR
                  wrote on last edited by
                  #92

                  Yeah, it's a earlier jc20 aswell, which has more aggressive porting than the later jc22 foxeye. Most it's done is just under the ton on the clocks, at the redline in 6th. It's funny cuss in the 125 sports bike world the nsr is regarded as one of the slower bikes. I'd have loved a crm though, just there so thin on the ground.

                  1 Reply Last reply
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                  • S scrimsmustang

                    @glynn123 said in Dt170 vs ktm exc 125:

                    I removed my airbox snorkel and upjetted carb, very good sound and possibly abit more power? Not noticeable mind but does sound brilliant.

                    Its the mixture screw and pilot jet you need to tweek when you remove the snorkel on a DTR mostly as they bog down at low rpm due to the air rich mixture, dial it out and you get a lot better low down acceleration.

                    Glynn123G Offline
                    Glynn123G Offline
                    Glynn123
                    wrote on last edited by
                    #93

                    @scrimsmustang What pilot jet do you recommend? bike runs great but id say it is slightly lean at idle, slight bog if you flip the throttle back at low revs but isnt bad. Might buy a jet kit for the bike and mess around with a few plug chops this winter.

                    1 Reply Last reply
                    0
                    • V Offline
                      V Offline
                      vtrn_raptor
                      wrote on last edited by
                      #94

                      Dt would kill a ktm when it come to a straight line

                      1 Reply Last reply
                      0
                      • NINJAN Offline
                        NINJAN Offline
                        NINJA
                        wrote on last edited by
                        #95

                        Almost;

                        https://www.youtube.com/watch?v=N9TvsCEhfmk

                        SEDUCED BY THE DARK SIDE!!!

                        CalumC 1 Reply Last reply
                        0
                        • NINJAN NINJA

                          Almost;

                          https://www.youtube.com/watch?v=N9TvsCEhfmk

                          CalumC Offline
                          CalumC Offline
                          Calum
                          wrote on last edited by
                          #96

                          @ninja DT170 though, and still loses lol.

                          Always Originate, Never Pirate!

                          NINJAN 1 Reply Last reply
                          0
                          • CalumC Calum

                            @ninja DT170 though, and still loses lol.

                            NINJAN Offline
                            NINJAN Offline
                            NINJA
                            wrote on last edited by
                            #97

                            @calum Yep 170 vs 144, not too much in it tho. 😉

                            SEDUCED BY THE DARK SIDE!!!

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