The ones we run range from a DD 12V2000 760hp to a DD 16V4000 2700hp. They are noisier than the Cummins engines, especially on a cold start.
It's a bit more pronounced, but that burbling and loping is pretty much how all the Detroits in the area sound when they're idling. DD engines are noisy, but big on power and pretty efficient for their size.
Never heard a diesel idle quite like this before.http://www.youtube.com/watch?v=Rve2Z3xZ02A