Rocker shaft rebuild

So instead of 11 to 20 per rocker arm the originals got new bushings.
Its not hard, just time consuming.
  The old bushings get pressed out with a vice and 2 sockets. I used a 3/4- 1/2" drive and a 1/2- 3/8" drive as a pusher.

Heres the fun part- the new ones get pressed in with seam "up".
Done right? Feeling accomplished??

Next take out the adjusting screws
And grind off the rivet head.
Someone said they punched the rivet through- I'd like to see how they did that.

Drill both oil weep holes through the bushing using the rivet hole through to the inner oil port and the upper side hole as a guide.

Done- right?  The official reamer size you need is .6255.
 Why .0005 was needed i dont know.
So the .625 cared for drill bit was chucked up, table vice set up for distance. And with a moderate speed and lots of oil...

After the part was deemed perpendicular to the bit it was drilled.

Then tested on the new rocker shaft. They went on  but took some effort to slide on the shaft.

I ran them on the bit by hand 3 more revolutions at the top of the fluting. 

This gave them a machined match feel to each.

I ran the small oil port bit back through to open the ports again.  Then clean all the bronze shavings off.

The old grooved shaft vs the new setup.
I filled the shaft with oil prior to installing on the new head.
Note the original shaft- rear side (left) worn terribly, front (right) that got little oil in good shape.  Weird.