sven2242 Posted March 16 Share Posted March 16 Buongiorno, consiglio carburazione per nuovo motore approssimativamente da dove iniziare prima della regolazione Carburazione :getti Max ? 🧐 per 28PHBH al cilindro collettore lamellare MRT motore : Malossi 132 MHR alluminio squish 1mm collettore lamellare MRT al cilindro Accensione Polini variabile 27/69 FRT/BFA marmitta Dexter Classic Box 32 Carter SIP Evo2 frizione FB24 Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 16 Author Share Posted March 16 Quote Link to comment Share on other sites More sharing options...
McKenzie Posted March 16 Share Posted March 16 Vedi se ti trovi bene con il filtro ed il rapido (molti non piace). A quanto hai settato l'anticipo? Hai un contagiri? Questo mi sa che è un bel motorello furbo, che gomma ci monti? Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 16 Author Share Posted March 16 I want a Vespa that looks original/classic so : Sip tubeless wheels + Sava MC12 anticipo a 25/24 gradi (motor-art-retro tells me it’s best for my configuration) no contagiri 😉 1 Quote Link to comment Share on other sites More sharing options...
Turbo99 Posted March 16 Share Posted March 16 Carburazione per iniziare phbh28: min 55 x2 av266 max 130. @Diegof12 lui può aiutarti sulla carburazione visto che ha avuto un motore simile. Quote Link to comment Share on other sites More sharing options...
Diegof12 Posted March 17 Share Posted March 17 Eccomi minimo 45 polve AV268 max 125 spillo x11 2ª tacca dall’alto Ma avevo un’espansione, quindi credo che da qua dovrai togliere qualcosa di polverizzatore e getto massimo Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 17 Author Share Posted March 17 Grazie mille @Turbo99 @Diegof12 La mia carburazione : max 122 minimo 55 spillo x2 2ª tacca dall’alto polve AV264 il motore non giri troppo grasso Metterò Max 120 /118 Actually fueling is too rich, because the engine doesn’t want to go revving. only if a close the fuel screw it’s better. So i will try jetting with a 120 or a 118 I think. 😉 doesn’t if a need to change something else ! 1 Quote Link to comment Share on other sites More sharing options...
Diegof12 Posted March 17 Share Posted March 17 5 ore fa, sven2242 ha scritto: Grazie mille @Turbo99 @Diegof12 La mia carburazione : max 122 minimo 55 spillo x2 2ª tacca dall’alto polve AV264 il motore non giri troppo grasso Metterò Max 120 /118 Actually fueling is too rich, because the engine doesn’t want to go revving. only if a close the fuel screw it’s better. So i will try jetting with a 120 or a 118 I think. 😉 doesn’t if a need to change something else ! You can try 5 point step with big jets. 2 points sometimes is not enjoyable. put on a 115 and try again, maybe this exhaust wants a maximum jet not too big, i suppose… Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 27 Author Share Posted March 27 Il 18/3/2024 at 00:53, Diegof12 ha scritto: You can try 5 point step with big jets. 2 points sometimes is not enjoyable. put on a 115 and try again, maybe this exhaust wants a maximum jet not too big, i suppose… Test ride today !!! configurazione Min 55 / Max 115 per regulare la vite della carburazione la regolazione per farlo girare bene è di solo 1/2 (mezzo giro di vite) ! e non gira molto bene… a un semaforo rosso decido di togliere il filtro dell’aria (ram air filter) = subito meglio !!! Devo cambiare Min ??? 55=> 52 o direttamente 50 Vorrei rimettere il filtro per sicurezza Grazie per il vostro aiuto e consigli Eric 🇫🇷 Quote Link to comment Share on other sites More sharing options...
Diegof12 Posted March 27 Share Posted March 27 You can directly try the 50 jet. Ram air filter is not good, nobody use it anymore. You have to isolate the hole around the intake collector, maybe with a driveshaft boot and with a malossi sponge on the floor, you can find some examples in this forum. Is possible that after remouving the ram air filter you have to put on a bigger maximum jet. I hope to have written the right way in english 😁 1 Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 28 Author Share Posted March 28 6 hours ago, Diegof12 said: You can directly try the 50 jet. Ram air filter is not good, nobody use it anymore. You have to isolate the hole around the intake collector, maybe with a driveshaft boot and with a malossi sponge on the floor, you can find some examples in this forum. Is possible that after remouving the ram air filter you have to put on a bigger maximum jet. I hope to have written the right way in english 😁 Perfetto !!! 😉 1 Quote Link to comment Share on other sites More sharing options...
solovalvola Posted March 28 Share Posted March 28 Ramair filter is not so good... just isolate the the area around the carburator as told you above and you'll be fine! I noticed you have quite a long rubber connection between carburator and intake manifold....You could easily shorten it at least 2-3cm (also by cutting the intake manifold, if necessary). The inner clamp can be positioned past the rubber boot and tightened from the left rear side, just above the tyre. This will make the intake work much better! As anticipated by Diegof12, after those adjustments, you might need to enrich the mixture again in terms of main jet. For your info, on the same carburator coupled on a 100 VMC with expansion exhaust, I use a main jet of 115, idle jet 56, atomizer AV266, needle X2. Last but not least, I understand you want to keep the vespa's look as original as possible, but using this kind of exhaust on such a performing engine is a bit of nonsense. Ciauz 1 Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 28 Author Share Posted March 28 9 hours ago, solovalvola said: Ramair filter is not so good... just isolate the the area around the carburator as told you above and you'll be fine! I noticed you have quite a long rubber connection between carburator and intake manifold....You could easily shorten it at least 2-3cm (also by cutting the intake manifold, if necessary). The inner clamp can be positioned past the rubber boot and tightened from the left rear side, just above the tyre. This will make the intake work much better! As anticipated by Diegof12, after those adjustments, you might need to enrich the mixture again in terms of main jet. For your info, on the same carburator coupled on a 100 VMC with expansion exhaust, I use a main jet of 115, idle jet 56, atomizer AV266, needle X2. Last but not least, I understand you want to keep the vespa's look as original as possible, but using this kind of exhaust on such a performing engine is a bit of nonsense. Ciauz Thanks you so much for your advice 😉 i will cut the rubber connection and make those littles modifications 👍 for the exhaust, yes I know that a Raven or VMC Evo Racer will be lot better. But if I put that sort of exhaust on my Vespa, it’s a lot « eye catching » and policemen 👮🏻♂️ will look a little more id there is other’s modifications… 🧐🫣 i put the Dexter Classic box 32mm because the noise is not too much and it’s has little more performance than a Proma or a classic Polini. But I know, it’s not « espansione » 😇 if I saw an « espansione » that OK for Vespa with the « big box glove Pré-1976 » and not too noisy, maybe I will test for the « fun » ! 🤩 1 Quote Link to comment Share on other sites More sharing options...
sven2242 Posted March 28 Author Share Posted March 28 And also I have I small problem : Vespa Primavera 1975 (pre 1976 = cassettino è piu profondo…☹️) 1 1 Quote Link to comment Share on other sites More sharing options...
sven2242 Posted April 3 Author Share Posted April 3 Hello i cut 1 cm of the rubber between the carb and the manifold 😉 i also have the Polini airbox (not a real filter) maybe I can try it ? (it’s the good size fitting for my carburetor 60mm fitting size) i don’t know if this airbox is good or not ??? Quote Link to comment Share on other sites More sharing options...
Diegof12 Posted April 4 Share Posted April 4 I don’t like this airbox, on smallframe i never use a filter or airbox. The rubber collector has to be like the carburator is one piece with the intake collector, because chainging sections is very bad. It can cause a wrong feeling of fueling due to fuel accumulation in the bigger area Quote Link to comment Share on other sites More sharing options...
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