Jack, in my haste I misplaced the decimal on the dimensions, 0.390" OD and 0.290" ID and 0.050 thick, a spacer for a 1/4" bolt. You'd have probably guided me to the source if I'd posted it right.
To close the loop, after a couple of stutter steps with the distributor I lit it off this morning, got the timing set and played with the idle stop adjustment a bit and it seems to be just fine. It holds a strong 25# of oil pressure at hot idle, and at 3000rpm holds a strong 50#. It sounds stronger than it was before the incident, due I'm sure to the fact that cylinders 6&7 had vacuum leaks due to the intake gasket splitting at the corners. The Good Lord was my Co-pilot Saturday, and quick action on the loss of pressure saved the engine. One new standard volume oil pump, two new lifters for #1 cylinder, a new pump drive shaft, some gaskets and an oil change plus a few days of frustration. Could have been sooooooooo much worse...




".......So sanded it all down and resprayed. ......" Been there. done that on a couple of paint jobs over the years. Usually took me a couple of days to get over being mad before I started...
Stude M5 build