These two engines may be small, but they are fully-functional and were masterfully crafted nonetheless. Continue reading to view.
World's Smallest Supercharged V8 Engine
This miniature four-stroke V8 engine has a 1.000-inch bore, 0.900-inch stroke, 9:1 compression ratio, 12,000rpm max., rotary sliding vanes (supercharger), dual WALBRO carbs, dual electronic ignition, and a two stage dry sump oil system.
Functional Paper V8 Engine
This fully-functional V8 Engine was made entirely from paper, with the exception of its internals. It sports many moving parts, which include "a compound crankshaft, a rapid cooling fan, 8 rods, 8 pistons and a complex compound gearbox etc.". The engine is powered by 2x1.5V D Batteries and weighs 2.98kg. From start to finish this model took one year to design and construct