Seems to me that noone really knows how to make an engine, I performed a search that worked, came up with a .edu site of some guy telling some details on how to make a diesel. I'll post both the google search and the direct link. Anyone made their own? I want to make my own engine eventually (as in decades from now), I don't know what kind yet though.

http://archive.dstc.edu.au/BDU/staff.../build.html#A1

http://www.google.com/search?hl=en&i...ngine+building