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Message: <blockquote data-quote="eurokit" data-source="post: 3491936" data-attributes="member: 25051">Those carburators are normally enough.. But if you mount it on a peugeot scooter then it would be very hard to setting up your carburator.. The problem is.. when you install a big bore kit (like this 70cc) it will needed more air.. it will suck more air..A two stroke engine is nothing more then a air compressor.. So when the bore is bigger it wants to take more air from outside..Only the main airfilter box isnt really calculated for using a big bore kit... especially with a bigger carburator..When installing a bigger carburator it will work on 1/3 or 2/3 of the throttle. But on 3/3 full open it will choke because it cant draw not enough air inside the carburator.. So the airbox works like a limiter.. You can probably fix this with drill holes.. But this isnt the best solution.. Because of extra noise you get.. Also there would be getting more debree inside the airfilterbox..The other problem you get is, that its almost impossible to get the carburator config right..I know this, because i tried it few years ago.. I also couldnt get the carburator config right.. So i ask a bikeshop here in my country to do this for me.. This guy worked three days on it and some nights.. He tried different jets, also different needles en neeldle positions.. Also he needed to make the inlet of the airfilter bigger...The conclusion was.. Still the main jet setting wasnt right (got the much air inside)The noise was hard, and was loose a lot of engine torque, which i had much more with the original carburator..My advice is:When going for a bigger carburator, dont expect to much improvement.. You really need another filter.. You could try a powerfilter. For road use this isnt the best solution. Because of bad filteration and noise.Better keep the stock carburator, then changing the airfilter sponge (for one that improve the airflow)The stock carburator also works like a limiter for the airfilter.. But only when the air filter sponge is replaced for an high airflow one this 70cc cilinder can be configured when the stock carburator..When using the stock airfilter sponge, it will also give you problems the configure the main jet.What happens is that with almost every jet the spark plug would still be wet.</blockquote>

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