Thanks a lot for the Information. This is an excellent dissertation on the engine.

The general Electric J-85 powered the Northrop Grumman F-5 Tiger. The J-85 turbojet isn't nearly as efficient as modern turbo fan designs so I'm sure it has a short range. The CJ10 Turbojet engine you mentioned is the same engine without the afterburner. The Jumo and BMW Jet engines had a very short TBO ( Time between Overhauls ) The scarcity of raw materials and the metallurgy contributed greatly to that short time.
I never knew the Mustang had fallen into German hands. Do you have any more information on that ?