quote:Originally posted by LTP: What determines quality other than brand, reputation and experience? The new valves roll around the granite counter top as smooth as a Swiss watch. The stock valve starts to surge when it slows down. I know, not a very scientific measurement for valve concentricity.
simple, effective, you see the difference. a laser-dyno-micro-bobber might not show what you're seeing
i couldn't help but think of this https://www.youtube.com/watch?v=QVGXUrKJVCU