World's smallest V-12 engine

In this video, Patelo hand-machines all the parts for "the world's smallest" V-12 engine, then assembles it and runs it. It's a remarkable feat of machining and engineering, and by the 5 minute mark, I was basically cheering and dancing around the room with delight as the motor started running.

El motor V-12 más pequeño del mundo. (Thanks, Fipi Lele!)