This is the original build on my blue Maxi. I basically just threw it all together without much knowledge of actually "building" an engine. All sorts of mixed parts. The base is a ZA50 w/ 2hp internals and a flipped 2nd clutch. I managed to find a 42mm Eurocilindro cylinder on ebay for $10 then added a Malossi 42mm piston, Treats high comp head, no base gasket, aluminum head gasket, a 15mm square port intake, 15mm Bing, and Magnum air tube. I had a Proma Circuit on it before swapping for a Paiolini (not Polini) G1 Pro circuit pipe from a Peugeot 103. With factory points and gearing at 18x40, I was able to squeeze a top speed of 38 out her. I know this is terrible but it was my first setup. I'd like to eventually get another Puch frame centered around the Eurocilindro kit, but do it properly.