The valve gear in my 1954 235 engine is so dirty I can't tell how it comes apart. (No oil filter.)
The problems is that there doesn't seem to be any oil flowing to the rockers for cylinders 2 through 5. I know I need to clean out the copper tubing that comes up from the pushrod area.
The question is: Is the rocker shaft hollow or does it just have small oil passageways, and how can I clean it out?