just a thought-
I dont know how many of you guys are familliar with modern four stroke motorcycle engine technology, but it is probably the most technologically advanced in the world, well mabey except for formula one. anyway the new Honda CRF450FR -which is supposed to be the closest thing to a two stroke you can get with valves, has an interesting valve set up that seems like it could work in auto engines. it is a single over head cam, that opperates the intake valves directly (like a DOHC- with no rocker arms), and the exhaust valves using rocker arms. seems very efficient, and is extremely free revin. It is lighter than a DOHC, and makes about the same power- actually more.

Sold 85 Turbo for 81 Turbo.