Harmonic balancers "slipping". How many have you seen on SB/ BB mopars?

[R413]

Seems most Times a tune up question comes up someone always throws out the dreaded "slipped balancer." Has anyone seen this on a 60's or 70's mopar SB or BB? I have never had one on a car slip. I have seem some with the rubber in terrible shape on junk engine sitting out or at swap meet tables.

What have you folks seen on cars? Ever had one slipped?

 

[Don Frelier]

No never have.

But my son's 98 5.9 had one go bad.
Probably had about 270,000 miles on it.

I think he swapped it out in less than 45 minutes which was pretty remarkable

 

[69conv]

Harmonic balancers aka Dampers​

 

[Doorkicker]

Once. With a roots blower.

 

[T2R9]

Never on an older engine but saw a couple on V6's when I was a dealer tech back in the 90's.

 

[Cop car wagon]

Wobble from oil soaked neoprene or whatever that elastomeric rubber is. Rubbed a hole in my cover.
Never off time

 

[BearDodge67]

Yea, on a single port VW motor.