The Poorman's Off Chassis Restoration.Com
Car Nose Logo Back Button
Photo Gallery Pin-ups Store Parts
Specs Erudition IPC message board
Web Cam Video Destructive Tests

Rocker arm:

The rocker arm fits over a stud in the head.
This is the fulcrum point. The nut on the stud is torqued to a specific value, to take the lash out of the valve train system.
As the push rod raises the rocker arm up, the valve opens. A hole in the rocker arm ball socket for the push rod allows oil to flow out over the top of the valve.