Alan's "valvespring that did not break went slower" sounds a lot like the old spring having "nose float letting more air in" effect?
There's no doubt pneumatic valve springs would save on broken springs, but racers race so maybe everyone would then bump their cam profile accels up and break pushrods and rockers instead?!
There's no doubt pneumatic valve springs would save on broken springs, but racers race so maybe everyone would then bump their cam profile accels up and break pushrods and rockers instead?!