The old Detroit 2 cycle engines used to be the choice of the fire service. For years when we would speck out a new fire truck, it had to have a 2 cycle Detroit in it. The Navy also used lots of them on many of their small boats. They were tough engines, and would take lots of abuse.
I believe that the emission regulations are what eventually killed them. It was probably about the early 1990's. I think the 60 series and the 40 series was Detroit's answer to the emission laws at that time. They seem to be very good engines.
Jim
