A look inside four strokes...

[mechmike0034]

Almost - for some reason the exhaust stroke is cut off. Nonetheless, you can clearly see the intake stroke, compression, the spark plug firing, combustion, and the power stroke...

http://gizmodo.com/gadgets/fourstroke-action/micro-camera-shows-the-workings-of-a-combustion-engine-309138.php?autoplay=true

Very cool...

[uncledaddy]

Amazing! I wonder how they were able to pull that off without melting that lens.

[tupacboy]

that's freaking awesome!

[Houdini]

Maybe the exhaust valve hit the camera at its lowest position. :shrug:

Damn cool video though.

H