I was surfin the net last night for r/c clips and came accross this site for a guy who was building real working tiny v8 engines! at first I just thought they were show pieces then I downloaded the clip of the hot rod!
All I can say is check the site out cos its just utter brilliance, craftmanship is spot on, I'm sure you will all like it
http://www.conleyprecision.com/
Enjoy