Piston

GENERAL SPECIFICATIONS
Piston Dia., Class 1 84.781-84.799 mm
Piston Dia., Class 2 85.276-85.294 mm
Piston Clearance In Cylinder 0.010-0.030 mm
Piston To Bore Clearance Rebuild 0.020-0.040 mm
Piston To Bore Clearance Service 0.020-0.070 mm
Pin Bore Diameter 20.632-20.641 mm
Ring Groove Width Compression (Top) 1.53-1.55 mm
Ring Groove Width (Bottom) 1.53-1.55 mm
Oil Ring Groove Width 4.008-4.032 mm
Compression Ring (Top) To Ring Groove Clearance 0.04-0.08 mm
Compression Ring (Bottom) To Ring Groove Clearance 0.06-0.09 mm
Squish Height 0.908-1.858 mm

Ring Gap Positions: The piston ring gaps must be spaced evenly around the circumference of the piston. This also applies to the elements of the oil scrapper ring. Stagger the ring gaps at 120 degrees to one another.