Jay Honeck wrote:
Yeah, I hear ya. I just don't think an occasional simulated engine-out
practice is "needlessly".
And I still want to know *how* it harms the engine. Exactly what parts will
be damaged, and why?

Can we agree that idle power/full power engine management will cause
more wear and tear (AKA: "Damage") to an engine than steady-state
operation?

I am not at all convinced that this is the case. Prolonged idling on
the ground probably isn't that good due to lack of cooling air flow, but
other than that, I don't think that varying the throttle from low to
high power settings necessarily causes any damage and I've read a fair
bit that suggests just the opposite.

Matt