Jim H! You forgot about the heat that dissapates off the block! That is even more of a waste of energy. Unfortunately only a totally ceramic block will reduce the heat transfered out and make a more efficient engine. Unless there is some other big mistery material that will hold together under the pressure and heat to build the block and head out of that will not bleed the heat energy like Cast Iron and Aluminum.

__________________
~Jamie
_________________
2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....