Mike is correct, by the time you hear the sounds, it is all over. The amount of metal spread through the engine when one of these fails is absolutely amazing; and it gets everywhere.
As for how much timing it takes to get into "interference", estimates vary, but beyond 12 degrees you are in serious yogurt.........
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
|