Very interesting topic!
As mentioned, I have put many hours into the engine display for the Brodak museum.
At the inception, John and I decided to try and have the biggest and most diverse collection of engines anywhere.
This was facilitated by a previous purchase by John, consisting of around 2,500 engines as well as hundreds of kits and thousands of magazines and books.
I volunteered to set up the entire engine display so John made me the engine display coordinator. But before doing that, I had to inspect, clean and catalog the entire engine collection. Before putting them in the display cabinets, I spent over 200 hours preparing them.
Since there were many duplicates, I auctioned off around 1400 of them to raise funds for the museum.
At this point, we have almost 1,000 engines on display, many of them extremely rare, like the Cave Cobra, Copperhead and the Morton M-5 radial. What I really would like to find is a Feeny, the only US made four stroke engine.
In my own personal engine accumulation, I have around 900 engines, many of which will be sold or donated/loaned to the museum.
Bob Z.