On 08/29/2019 08:01 PM, Xeno wrote:
Yeah, not a fan of plastic impellers on water pumps. Still have memories
of those Chrysler ones that used to spin free on the pump shaft. They
looked like they were Ok but they just didn't pump water.

Been there, done that. Weirdest thing I ran into was on a '59 Buick 225.
The pulley with the timing marks had an elastomer coupling to the actual
driven hub, supposedly for vibration dampening. Throw a timing light on
and rev the engine to see the advance and the pulley would rotate
relative to the crank. Go back to idle and the mark would be way off.