This SJ-10 Turbojet engine was built by Mike Early, of AZ, in the 1990s. The SJ-I0 engine was made from a turbocharger with a combustion system added and it runs on propane. This size turbocharger was used on Chryslers in the late ’80s and with the addition of his combustion chamber this engine could generate 20 to 30 shaft horsepower. Mike provided plans to jet engine enthusiasts worldwide. It measures 16”-long, 8”-wide, 18”-tall, and weighs 25 pounds.