Rocket, this will help you
http://www.lycoming.com/portals/0/te...s_11261971.pdf
http://ehfc.net/LycomingEngines.pdf
I cannot fault Lycomings and Continentals, true they burn more fuel, but they have decades of use behind them, they are known, simple and reliable, what more could you want.
As for some of the later diesels, they are none of the above.