HIGH Revving 4 Cylinder Mini Engine

In this video I am assembling and testing a 4 cylinder mini engine, that sounds insane, like an F1 engine.
Toyan L400 Engine: https://amzn.to/3qyLdSZ
Electric Screwdriver: https://amzn.to/3WV54YB
TOYAN FS-V800 Engine: https://amzn.to/3qDlusm