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booo for body roll.
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what is this? i always hear this term when talking about revving your engine. anybody care to explain?
 

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When engine speeds exceed the spring rate of the valve spring, the valve no longer closes properly. This is caused by the lifter no longer being able to stay in contact with the cam lobe. The valve then bounces and never fully closes or seals properly <= floating.
 

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OG e46fanatics lurker!
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Technik said:
When engine speeds exceed the spring rate of the valve spring, the valve no longer closes properly. This is caused by the lifter no longer being able to stay in contact with the cam lobe. The valve then bounces and never fully closes or seals properly <= floating.
what he says...
 

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You will never have this problem with a rev-limited engine. This was a problem for older cars/muscle cars which would wind as far as you let it (or as far as it could go).

Edit: Actually, this CAN happen if you have a manual trans. and you foolishly choose too low a gear at speed.
 
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