Originally Posted by
bjr48
OK. So more of a diameter check than trying to detect oblong. I imagine oblong/oval wear comes long after you neglect the slop?
Seems like the OP has two responses here. So I was considering the first response. If the engine gets over reved or something will the rod STRETCH and the bushing/pin fit still be like new?
You want to measure the pin at a couple of different points, take a measurement, turn it 1/4 of a turn and measure again. You are looking for a variance to tell you if the pin is out of round. Anything more than .002" variance is going to have a little slop, even with a new rod.
The rods do not stretch per se, the bushing surfaces are wearing out causing the piston to travel innacurately.