SuperSi thank’s for your answer.:thumb,.So if I have a cylinder with 47 mm outer diameter of the part that goes into the carter then is OK with my carter if it is smaller then I have to widen my carter.

In your previus post you mentioned about using a file to open up the inlet and inlet window. I suppose that I must get an fi 13 mm round file.…[Lees meer]

Wilk1985 :
In Holland some of the late Ciao models have a different carter on which you can not fit another cylinder. This was also the carter that had the eco piston. I have no idea if the same carters are found in Slovenia, but if so you cant fit a 43mm on it.

I suppose it will not be a problem, if you find complete DR EVO 43 kit you also…

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Thanks for your answer :thumb . So obviusly I must drill the carb intake on the original carter from outer and inner side. Is DR EVO 43 cylinderkit a good choice then. What about the original cylinder head. Does it fits without any modification on DR EVO 43 and without head gasket or the head gasket for 43 is recommended.

So, as I can see I went tottaly wrong with my setup. If I can get 41 or 43 cylinder kit which brand do you reccomend me to buy. Is it neccesary if I mount 41-43 cylinder to cut the crankase and modify carb intake on the carter or I can leave all standard like it is now. Does original cylinder head fits on 41-43 cylinder kit.