Horizontal Cylinder cam timing check.

I made a spreadsheet to keep track of my readings. You can see by the numbers on the bottom (Horizontal Cylinder) that the exh. cam was right on, but I had to advance the intake cam 4 degrees (2 degrees at the camshaft) to get 107.
The degree of crankshaft rotation is checked at 1mm. of lift or .040" on the dial gauge.

It's tricky, but possible, to get the pointer right on the top of the closing shim. After much experimenting and talking to others who have attempted this, I've found that it's best to rotate the crank forward (CCW) until the valve opens to .040". Record the reading on the degree wheel as valve opens. Then back it up (against rotation- CW) until the needle goes back to "0" (TDC on the degree wheel). Continue against rotation until the cam goes all the way around and then moves the needle on the dial gauge back to .040". This is the point where the valve is 1mm. before fully closed. Record this on the sheet as "valve closes".

A couple of notes: 1. Make sure the needle stops right at "O" when coming back from the "valve opens" point! If it's off a little--something moved or it jump slightly on the shim---start over!!

2. I found it's best when backing the crankshaft up (CW) to go past the "valve close" point a few degrees then come back to it with a correct engine rotation.

This shows a reading of 17 degrees ATDC on the degree wheel. (H. exh. closing)