SB torque plate

Most of the time the last .010 are what's removed during the honing so it's usually not necessary to, although cylinder preparation is almost more art than an exact science, so opinions are going to vary there. When racers go to extremes, they are going after the last two or three percent of the 85 to 95 percent available power of the hypothetical hundred percent available power. Frictional loss, harmonics, etc. prevent getting the last 5 or more percent.