Cylinder heads?
 

http://avs.spot-mate.com/images/triflux/Triflux.jpg
http://farm4.staticflickr.com/3131/3...0ed1f682_z.jpg

Anyone know about these heads?

Longer I think about it, the more I think its like a single cam head.

Two different engines.

The top is a Lancia TriFlux:

http://avs.spot-mate.com/images/triflux/Overboost.jpg

Google image search FTW.

One exhaust and one inlet valve per cylinder are driven by each cam, the opposing cam drives the other pair.

http://avs.spot-mate.com/triflux.html
http://avs.spot-mate.com/images/triflux/Overboost.jpg

C

I didn't say anything about the engine, I said cylinder heads.

u mad

It's nothing like a single cam head. When you actually look at the airflow, a 4-valve DOHC has more in common with a 2-valve SOHC head than the designs you posted did.

I c wat u did thur, using your intornet skillz

Really interesting looking engines though.

This one is also a 4 cylinder.

http://touringmm.blogspot.com/2011/0...inderkopf.html

C

Yes I'm aware their 4 cylinders, interest is only in the heads.

I meant in the same way altering the cam on a single cam alters both intake and exhaust compared to a common twin cam motor where one cam operate intake valves, the other being exhaust valves. I figure one cam in those motors have a intake and exhaust valve in one cylinder attached to it, so altering cam timing would alter both intake and exhaust timing on that side of the engine similar to a single cam motor.