Quote:
Originally Posted by n4mwd
I called the ebay dealer and told him what you said and I suspected. I told him that I was willing to split the case and inspect the crank. Basically, he's willing to refund the full purchase price if the crank or rods are bad - and the cost of new bearings if its only the bearings.
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Appreciable rotation means the bearing is not cylindrical anymore; therefore, enough oil pressure can't develop.
Connecting rod twist service limit is 0.2 mm at the end of a 100 mm lever.
Actually, you could measure the actual clearance by moving the rod up and down against a dial and compare it to limit spec (0.10 mm).
It is not easy to precisely measure it after dissembling it:
http://www.carcraft.com/techarticles...e/viewall.html