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15 berichten aan het bekijken - 1 tot 15 (van in totaal 31)
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  • #147506

    Millen
    Topic starter
    Berichten: 114

      I have bought and put togeather a complete malossi mhr engine with the malossi crank and the malossi 46,5mm cilinder kit. The engine is super tight and extreamily easy to start and no leaking or nothing is wrong but it has no speed or no acceleration. It runs just as fast as my friend malossi 43mm with bad engine and inlet. I have had malossi mhr engines before with the 47mm deps and even an polini evolution engine with the polini 46mm and a speed engine with polini 46mm and they all runs fast and are much stronger than my brand new malossi mhr engine. Is it really that bad 46,5mm cilinder kit. It has no strenght and no speed. It really is like my old one dr43mm but this engine costs way more. ? Anyone has any thoughts on my problem.

      #148322

      zevenenergie
      Donateur
      Berichten: 4167

        Does your engine make the bwoaap sound?

        #148323

        Millen
        Topic starter
        Berichten: 114

          I really dont know what the bwoaap sound is. I mean the engine is in pefect condition. It is brand new not even driven it more than maybe 15mins everything runs great and sounds great but it has no power or speed. I mean even a speed engine you will make BIG diffrence from a60cc cilinder but this is like an original 60cc cylinder? Its just no power or speed?

          #148324

          zevenenergie
          Donateur
          Berichten: 4167

            Some of the 43 mm cilinders are very fiercely like the dr evo. a standaard poinie 46 is not that fiercely.

            Can you post a youtube movie link zo we can here the sound of your engine running.
            and pleace give us your complete setup

            #148325

            Fredzzz
            Moderator
            Berichten: 1484

              Tell us a bit more about your transmission? Variated or mono? Pulley size etc. How about your carb settings (jet etc.)? What exhaust?

              #148326

              Millen
              Topic starter
              Berichten: 114

                The carb is a standard 13mm carb with a 75jet and normal clutch no wario. And 80mm pulley. I mean it has no power man. Is this really piece of shit its lik it has 1hp. I have had many ciaos and this is nothing special at all. Maybe i need the bigger 19mm carb but i do not think it will give me that more power and speed. i Mean you know when you accelerate that is has potentials for going fast but this is nothing. Its like driving an original carter with 60cc. Maybe ill give the polini 46mm kit a chance and sell this 46,5 kit?

                #148327

                zevenenergie
                Donateur
                Berichten: 4167

                  Do you have a standaard air filter?
                  exhaust?

                  Look, there are always scammers who want to have your engine .we are trying to help, so give good information.

                  #148328

                  Millen
                  Topic starter
                  Berichten: 114

                    the air filter is not stock its modified but its not the airt filter that makes this kind of problem. Its like its missing like 3hp ore something. I know when something runs and when its not ggod. I hav build some of swedens most nicest ciaos and know what im doing. The exhaust maybe is shitty its a Techno so nothing fancy but i have a brand new polini sp that i will try out but maybe its just the auspuff but like i said its like its missing some hps. I have a video know uploading on youtube when im just makes some rpms with it with the button on the wheel inserted so no driving just rpms. And its black as night but maybe you guys can hear something that im missing. The rpms is high but no power. The video is coming soon then ill give a link to it.

                    #148329

                    ! Joor !

                      Maybe your piston is upside down.
                      But without a movie we can’t help you.

                      #148249

                      Millen
                      Topic starter
                      Berichten: 114
                        #148251

                        Tonni
                        Moderator
                        Berichten: 4539

                          Only thing I can think of is the problem that I myself once had with my EVO engine.
                          It was doing exact the same thing.
                          Started fine, ran fine, high RPM but absolutely no torque.

                          After a long search I found out that my internal combustion chamber was leaking through the gasket, but only straight into the decompression channel.
                          Therefore there was nothing strange to be heard (no special noise or anything)and the engine ran fine, it just had no power..

                          (This is caused by the lack of suction. But instead of opening the membrane effectively and filling the combustion chamber with fuel through the transfer ports, it just levels out the suction with some air/gasses straight back from the decompression channel)

                          In my case the cilinderhead as well as the top of the cilinder weren’t totally flat, both had a small hollowing just at that point.
                          You can easily check this by looking at the imprint of your gasket. Just take a new one, tighten everything as normal, loosen it up again and check the imprint. No equal imprint means that something is not totally flat.

                          Check it out and let us know!

                          I came, I saw, and I forgot what I was doing...
                          #148321

                          Martino
                          Moderator
                          Berichten: 7384

                            First off all, all these parts together is nothing fancy indeed. It’s not that luckaly choosen.
                            -The Malossi MP carters realy comes to live when using a bigger phbg carburettor.
                            -A standard 46,5mm Malossi isn’t faster as a 43mm Malossi.
                            – The exhaust (Techno) is really rubbish , but even the Polini SP is not as good compared to some other known exhausts like a Proma CC, Giannelli Mega and Simonini Calibrata.

                            As for your youtube clip. It sounds you need to downjet your carb. Try to find out this will help a little?

                            #148330

                            ritze
                            Bijdrager
                            Berichten: 3421

                              amen to that.

                              get a bigger carb and a good exhaust,
                              i did one test with the 13/13 carb on my RV and it was really bad. (43 DR)

                              now it is oke with the big carb and low torqe exhaust

                              De budget beun tjoener: geen geld is te duur of het werkt nog niet
                              Link naar Mijn collectie / Projecten.
                              #148331

                              Millen
                              Topic starter
                              Berichten: 114

                                Yes maybe ill try that or just put the new simnonini 46mm crank in the angine. But ill try buy a bigger carb and my other exhaust

                                #148252

                                Martino
                                Moderator
                                Berichten: 7384

                                  Don’t go for a different stroke crank. This will need also another cylinder. Easy fix to downjet first and compare results.

                                15 berichten aan het bekijken - 1 tot 15 (van in totaal 31)
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