Redford MI they have built a new plant in one of the Carolina's for the 2 strokes. DD also have a plant for the 53 series in Kansas don't know what they do in Kansas but I believe it is for military they do have plants in Mexico & probably other countries as well.
Location: Just North of Detroit, a surprizingly great city
My neighbor works at the Redford, Michigan plant in their testing facility. A couple years ago he mentioned testing some new 2 strokes but we haven't talked about it recently. None of the 2 strokes capable of passing current emissions limits and that is why series 60 came along.
Jon and Alie Kabbe
Started with 77 Coach
Now have 39' 93 coach
2007 civic toad
I read last year that Detroit diesel produced 55,000 two stroke diesel engines and a good number were purchased by the military. The rest were shipped out of the country to areas where there are no diesel admissions.
I remember reading a couple of years ago that a properly tuned 2 cycle diesel could pass the CA pollution tests. I hear they are the strictest pollution tests around so that says something for the old 2 strokes.