Blueskies wrote:
"Matt Whiting" wrote in message ...
Connecting rods don't wear. Their bearings wear, but the con-rods don't wear. I doubt the slight difference in force
on the connecting rod and crank bearings is enough to cause a measurable difference in wear.

Matt

They do experience fatigue cycles. Is that wear?

Maybe, maybe not. If the stress in steel remains below a certain
threshold, the fatigue life is essentially infinite. I've never heard
of a life limited con-rod so I suspect the stress levels are
sufficiently low that fatigue isn't an issue. In any event, no, I don't
think fatigue is considered to be wear by the standard definition.

Fatigue is a mode of deterioration, as is rust, but I don't think either
is considered to be wear per se.

Matt