When you are rough boring a block with a Power Hone like a Sunnen CK-10 or CV-616, you finally get the ring ridge removed from the cylinders and the honing stones are making a nice smooth cutting sound, then you stop and torque the torque plate onto the block and restart the hone without making any changes to stone cutting pressure and the hone sounds like it is trying to hone a square cylinder. After you've seen and done this several hundred times to blocks of all types, you become a firm believer in the importance of a torque plate, for street or race.



Class III CNC Machinist/Programmer