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15 berichten aan het bekijken - 31 tot 45 (van in totaal 91)
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  • #486317

    piontek
    Topic starter
    Berichten: 69

      please speak english, I don’t understand dutch:? 😀

      #486697

      piontek
      Topic starter
      Berichten: 69

        Hi
        some news with the cylinder.
        Today after several tests, I decided to modify the exhaust port.

        As you know, the simonini exhaust port has got a sort of occlusion that doesn’t allow to
        the gases to escape correctly out of it.
        They drop against the area where it’s placed the threaded rod, that is a little bit inside the exhaust.

        In conclusion the flux is altered.

        I decided to drill the threaded rod so that it reproduce perfectly the exhaust port, to avoid that the gases bangs on it and runs continuously.

        After that I worked on the all exhaust area to make it as much as straight as possible.

        #485958

        piontek
        Topic starter
        Berichten: 69

          #486702

          piontek
          Topic starter
          Berichten: 69

            #486703

            piontek
            Topic starter
            Berichten: 69


              an inside view of the port modified.

              #486704

              piontek
              Topic starter
              Berichten: 69

                the result of this modify is a better engine response since the low revs up to the mid. renge

                The engine is more reactive and achieves much quicker the max torque.8)

                #486728

                hansieb
                Moderator
                Berichten: 10922

                  Looks nice, when will you start your engine 😀 ?

                  #486729

                  piontek
                  Topic starter
                  Berichten: 69

                    The engine is already running 😀 (to be more precise, since a year)
                    I’m just showing you all the changes that I’ve done.

                    I’ll post some other pictures, and than some vids.:thumb

                    #486750

                    Martino
                    Moderator
                    Berichten: 7384

                      So actually we were all looking at some history around here?
                      I thought you’d posted some photos of your complete Si on this forum before?
                      Or maybe I’ve seen them on ccc.it…

                      #465988

                      piontek
                      Topic starter
                      Berichten: 69

                        yes it’s a sort of story, I didn’t posted on ccc my works ,(I mean not a topic).. I just psted only a photo into the elaborations, even ain’t finished.
                        Here I’ll post the complete work with some vids.
                        Hope I didn’t make you sad and disappointed :con

                        #486764

                        hansieb
                        Moderator
                        Berichten: 10922

                          Ofcourse not, keep on posting 😉

                          #486773

                          Martino
                          Moderator
                          Berichten: 7384

                            Indeed nice to see all the steps of improvement. For sure the vids makes me curiuos.
                            But why the hell i thought i’ve seen some photo’s before? Wasn’t your Si Black painted?
                            Or my memory is letting me down. 🙁

                            #486777

                            Sebastard
                            Bijdrager
                            Berichten: 235

                              Piontek, non e un nome Italiano perro,
                              polski forse?

                              bello motorino amigo,complimenti!

                              #460435

                              piontek
                              Topic starter
                              Berichten: 69

                                Sebastard :
                                Piontek, non e un nome Italiano perro,
                                polski forse?

                                bello motorino amigo,complimenti!

                                😀 Your italian is great man!
                                Anyway, yes it’s polski , I like it.

                                #460432

                                piontek
                                Topic starter
                                Berichten: 69

                                  Martino :
                                  Indeed nice to see all the steps of improvement. For sure the vids makes me curiuos.
                                  But why the hell i thought i’ve seen some photo’s before? Wasn’t your Si Black painted?
                                  Or my memory is letting me down. 🙁

                                  You’re right Martino, You didn’t make a mistake.
                                  There are photos of my Si on ccc but there isn’t a topic such accurate like this.;)
                                  Your memory isn’t rusty, I think it’s gonna work well still for a long time:lol

                                15 berichten aan het bekijken - 31 tot 45 (van in totaal 91)
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