Below are the images we took when we removed the valve cover. This was a pretty big deal for us. I have only seen this on a few engine in my life.
I was behind the camera in most of these shots.
The rocker arm is the see-saw looking part. The push rod on the right side of the rocker arm, pushes up on the rocker arm. The depresses the spring on the left side, opening the valve.
These are the cool parts of working on engines.