If you're interested in doing a search, have a look in here:
http://www.rcuniverse.com/forum/foru...smode_1/tt.htm

I don't know if anyone has done it in engines as small as what a 1/10 or 1/8 scale R/C Car or Truck uses though? It's usually done the other way around...running a converted weed wacker gas engine on a blend of gas / glow fuel with a glow plug...
http://www.rcuniverse.com/forum/m_11156409/tm.htm