Side cut of engine @ 14000rpm

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[DonutKing]

Here are a couple of videos of a cut-away view inside a BMW S1000RR motorcycle engine

<iframe width="854" height="480" src="//www.youtube.com/embed/8-ymU7ETnnY?fs=1&start=" frameborder="0" allowfullscreen></iframe>

This is insane.

Its amazing that those little springs can open and close the valves that many times a second. Note the oil spraying everywhere

Here's another one showing the underside of the valves:

<iframe width="854" height="480" src="//www.youtube.com/embed/Ed-l2Ot_d9c?fs=1&start=" frameborder="0" allowfullscreen></iframe>

I'm amazed that at the speed that these valves open and close, there is enough time for the cylinder to draw in air/fuel from the intake, and push out the exhaust gases, all in a fraction of a second.


Think about this the next time you give your car/bike a bit of gas

[MrX]

ROFL its seems like the valves just spin and don't open when running at high RPM