Thanks for the reply Ted. I believe your assessment of the machining room ID processes is spot on. I for one would hate to be working on a room full of crankshafts that look just alike without some form of quick identification such as the flange dot or recess on the flange. Would be mass confusion otherwise!

312Y crankshaft vs 292Y crankshaft is easy to spot standing up.   Joe-JDC

JDC