Broken Valve Spring

[eschaider]

Originally Posted by t walgamuth

I would expect it was over revved. With all the rev limiters available today this is less likely but I would still think most common. It could be done by downshifting at too high rpm also.

Best efforts not withstanding, sadly there is always a way to circumvent safeties we attempt to build in. That said, it does not matter how high you overspin the engine or even float a valve. If a piston does not hit the valve, the valve will not bend.


Ed