Variable duration camshaft system

[Rhymingmechanic]

Rhoads variable duration lifters are the old hotrod version of this setup. They reduce lift and duration at low RPM for better street manners with a big cam, and return to full specs above 3500.

This system looks pretty slick, and the video gives a clear explanation.

 

[Exhaustgases]

Just more stuff to create the new world of one time use disposable automobile engines. After 5 years the actuators and electronics will no longer be available to fix it, so when the warranty ends its time to find a new car.