BMW N series Engines WTF?

[diggity_1031]

"over engineered" thats BMW for you.

[F34R]

Pretty =)

[Massimo]

Oh I think I see I was wondering why there was an extra rocker arm. It seemed over engineered. But I think I understand that it is linked to the Variable Timing. Ok makes a bit more sense still seems alot more complicated then it needs to be.

[Dominic49]

whats the question? changing the ratio for the rocker arm to change lift gets rid of a restriction (throttle body) and allows more control over the combustion process.

[Massimo]

Ok someone please school me on the reason for this. The only advantage I really see is a short valve stem giving less side loads on the valve guides for longer life.