Re: Busfella in this camp!
Mine are Chinese kit engines, they are more durable than you think. The first engine I bought is a 2010 grubee 48cc that has over 1500 miles on it, I currently have it apart doing some porting and piston mods. The piston and cylinder show very little wear, as cheap as they are some are pretty good.
Your results may not be the same,Greg