This is a great video.
4 Stroke Combustion 4K SLOW MOTION | 33,000 FPS
5,666,821 views
Sep 17, 2021
Look inside a running engine shot with a high-speed camera.
It's beautiful. Honda XR75 4-Stroke OHC motorcycle engine with the World's First CLEAR Acrylic Engine block!
Slow Motion footage shot with a Phantom V1611 High Speed Camera.
Piston Ring fabrication and assembly shown
Jump in at 14:45 to see the action:
https://www.youtube.com/watch?v=nvMcFQqhbpM