Quote Originally Posted by RobertISaar View Post
once you pass the spark advance threshold where you produce best power, assuming you haven't run into knock yet, that's the area where you'll start hammering the bearings....

that's the area where novice tuners almost always end up, since they believe the most advance they can run without knock is the best spot to be....
I have never seen anyone hammer bearings, unless they just go crazy with spark advance.