[piloto]

In cases where they are replacing just the crankshaft and main bearings, is their argument or claim that the pistons, piston rings, and cylinder walls have not incurred any damage? If the tolerance between the crank and main bearings are excessively large, it would create some lateral load on the piston, pistons rings, and cylinder wall. If it's the opposite and the crank binds on a section of the main bearing, then it can cause scoring of the cylinder walls. Either way, I don't see how such a problem can just be contained to the crankshaft, crankshaft bearings, and main bearings.