Piston

DIMENSIONS
Diameter
Standard
Mark 1 80.905-80.915 mm (3.1852-3.1856 inch)
Mark 2 80.915-80.925 mm (3.1856-3.1860 inch)
Mark 3 80.925-80.935 mm (3.1860-3.1864 inch)
Oversize 0.50 81.405-81.435 mm (3.2049-3.2061 inch)

Oil Clearance
Standard 0.085-0.105 mm (0.0033-0.0041 inch)
Maximum 0.20 mm (0.0079 inch)