IMHO, I think if piston rings were supposed to rotate, then it wouldn't be so
crucial to have the
ring gaps different from each other when assembling an engine.
On a related note, I was reading that the newest Porsche 911 engine has valve
lifters that
intentionally don't rotate. It's to save valve train mass, inthat the
non-rotating lifters can have
a rectangular face that matches the cam, rather than a round face.
-Aron-
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/// what is needed. It isn't that difficult, folks.
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