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One side benefit of the new pistons is the thinner 1⁄16-inch top and second ring with 3⁄16-inch oil control rings versus the 5⁄64-inch stockers. These thinner Total Seal rings should reduce friction and contribute power. The new rings were not file-to-fit, but we opened up the second ring end gap from 0.018 inch to 0.022 inch to allow any combustion pressure caught above the second ring land to escape. These pistons also require an oil ring spacer because the wristpin intrudes into the oil-ring land.