Did some searching and reading on post very well might not be here or I am missing the mark. Anyway the China import 50-80cc engines or said to be all the same basically. With Chinas love for cloning things I can buy that. The Question is what are they a clone of, the original engine that started it all so to speak. Next is there a tech manual with diagrams schematic and tables for torques etc.. A PDF would be great. GT Good Times, CG China Girl, CD China Darling. I do not even know all the brand names either and plants that make them.