I ran the connecting rod reconditioning department of a big machine shop in Nashville for a few years. We ALWAYS reconditioned rods when changing to new bolts. Grind a few thousandths off the face of the rod cap to shorten the diameter of the big end a little, and then hone it round again with a Sunnen hone. The process shortens the rod by a few thousandths, but as long as all the rods get the same treatment, no harm- - - -no foul. On a blueprinted racing engine, find the shortest rod, recondition all the others to the same length, and deck the block surface a little to get back to the minimum deck height. That, and about a dozen other procedures is the reason racing requires a deep-pocket sponsor!

Bolts and nuts stay tight because torque stretches the bolt- - - - -not the design of the nut or lock washer- - - -that's why the same size and thread hardware has different torque specs for grades 2, 5, and 8 material. A Grade 8 bolt tightened to Grade 5 torque will loosen up and come out. The tougher the bolt, the tighter it needs to be to get the proper amount of stretch.

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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!