Okay.....I thought I would post these up as examples of old diesel generators.
This Detroit is a single phase 80KW and has the 9 (or 11 or 12) lead generator head that can be reconnected for 3phase power, etc. You have to click on the image to play the video.
Here's a much smaller 2 cylinder Lister that is rated 8KW. I don't have a video of it running though. This one might end up at my house. Still debating about getting something newer.