Anyone who’s into cars or just taking things apart, will appreciate the hard work and dedication put into these three amazing yet functional mini engines. Continue reading to see them all.

1. Paper V8 Engine

This fully-functional V8 Engine was made entirely from paper by Yeesjob, with the exception of its internals. It sports many moving parts, including a compound crankshaft, a rapid cooling fan, and a complex compound gearbox etc. The engine is powered by 2 x 1.5V D batteries and weighs 6.6-pounds.

2. Quarter 4-Cylinder Engine

Built by George Luhrs, the “Quarter 4-Cylinder Engine” is touted as the smallest of its kind. It took him approximately 600-hours to complete and no details were spared during the build, as you can see from the images above.

3. LEGO V8 Engine

Yes, an auto enthusiast has built a working V8 engine using just LEGO parts. This tiny engine peaks at a maximum of 1780 revolutions per minute, which was made possible by adding timing gears in the rear to prevent torsion in the crank and cam. Currently, it’s running in a double cam setup.

Bonus Paper V8, LEGO V8 Videos