The Volkswagen VR6 engine has been used in the VW Golf GTI, Passat, Phaeton, Touareg, Beetle, and many of the golf generations, among others. The VR6 engine is a bit of combination of a "V" style ...

Correctly viewed, a pushrod engine's valvetrain assembly stands at the gateway of improved power. It is not a collection of components only intended to time and provide the correct valve motion.