4WD ITALIA ha condiviso un post. ... See MoreSee Less
Here's a classic!
Pronta per la trasformazione 👍🏻
4WD ITALIA ha condiviso il Performance Trends - Valve Spring Dynamics and Spring Failure ... di EngineLabs.
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A long time customer of Performance Trends sent them this high speed video of a valve spring pack in operation at high RPM. You can see the coils oscillating and the outer spring actually breaks. It really gives you an appreciation of the fact that things are not always under control, even in the most well built race engines.