Another aspect of this is that the damper actually has a job to do(besides providing a place for the front seal to ride and to mount the lower pulley)..... it’s there to dampen vibrations in the crankshaft.

It’s unlikely this dampers complete failure happened all at once........ so in the past few months leading up to what we see is the end result...... I wonder how effective it was at doing it’s primary job?

This is my main objection to Chinese dampers in general.
I find it hard to believe they are doing any type of R&D in an effort to come up with a piece that is actually an effective vibration damper in a HP application.

There was a member that used to post pretty regularly that had a 451 in a Pacer.
At one point he put an Indy headed 511 low deck in it.
After it had been running a short time he was commenting on how a lot of the motor hardware just wouldn’t stay tight.
Intake and carb bolts, alternator, pulleys, etc.

It had a Chinese made Professional Products SFI damper on it.

He ended up taking the Australian made Summit damper off the 451 and putting it on the 511...... and the bolts miraculously stopped coming loose.