In regards to e57:
Ahh yes! A working Turbo Diesel.. Music to my ears!
I have been around the small one at the retirement home I wired when they load tested it.. no load it does sound like its "racing".. The cover at the top of the gennie stack just flaps open and closed. nothing special...
Apply load and lookout. [Linked Image]
Immediately you hear the engine tone change but it doesnt drop in speed, you also hear the turbo "spool up" right away.
From outside you see the stack cover nailed wide open and can hear the growl from within.. The whole contraption makes you think there is a jet-engine hiding behind the big ventilation grill in the wall.

This is only a "baby" @ 500KW I was told hahaha

A.D