Don't ignore the thrust bearing on the crankshaft. You'll need to have it preloaded one way or the other, or none of your measurements will be worth a concrete water barrier. The whole pursuit sounds pretty OCD to me.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!