3D printed Toyota 22RE engine

Printed on a homemade RepRap Prusa 3D printer. Completely reverse engineered Toyota 22RE 4 cylinder engine. Can completely print a fully rotating model. Working crank, pistons, and valve train. The valves open and close!!!. It may not be the most exciting engine but its the only one I had in my garage. Great if you want to learn about engines and how the moving parts in them work. All parts are printed except for a few bearings and fasteners. More than 3 days of total print time. The block alone was 34 ho