Damaged crankshaft?

[AlpineX]

Originally Posted by absentmathis

OP, wondering whatever came of this? The damper on my 4.8 has developed what appears to be a similar wobble, however it's never been wrecked per reports and history that I have. I have yet to remove the damper or hub to inspect, but I wasn't under the impression that these are typical wear parts.

The damper is a wear item, not sure how common on that engine. The issue with the car from the OP is that during an accident, impact was made with the crankshaft (which is floating on oil inside the bearing tolerances). The inward impact likely or possibly damaged a thrust bearing and may have caused minor or major damage to the internal geometry of the engine (even more severe if [likely] while running as Ard mentioned). I think the OP did the right thing by putting in a used engine.