Piston, Engine

Piston
Production STD (J or JT) OD (1-6) 102.8650-102.8830 mm 4 (0498-4.0505 inch)
Production STD (J or JT) OD (7-8) 102.8650-102 8830 mm (4.0498-4.0505 inch)
Production O.S. (S or ST) OD (1-6) 103 0080-103.0260 mm (4.0554-4.0561 inch)
Production O.S. (S or ST) OD (7-8) 103.0080-103.0260 mm (4.0554-4.0561 inch)
Service STD (JT) OD (1-6) 102 8650-102.8830 mm (4.0498-4.0505 inch)
Service STD (JT) OD (7-8) 102.8650-102 8830 mm (4 0498-4.0505 inch)
Service Hi Limit (GT) OD (1-6) 102.9040-102 9220 mm (4.0513-4.0520 inch)
Service Hi Limit (GT) OD (7-8) 102.9040-102.9220 mm (4.0513-4.0520 inch)
Service OS (0.50 OST) OD (1-6) 103.399-103.417 mm (4.0708-4.0715 inch)
Service OS (0.50 OST) OD (7-8) 103.399-10:3.417 mm (4 0708-4.0715 inch)
Cylinder Bore Clearance (1-6) 0.0890-0.1250 mm (0.0035-0.0049 inch)
Cylinder Bore Clearance (7-8) 0.1020-0.1380 mm (0.0040-0.0054 inch)
Cylinder Bore Protrusion 0.0900-0.3100 mm (0.0035-0.0122 inch)
Pin OD (Green) 30.9961-30 9987 mm (1.2203-1.2204 inch)
Pin OD (Orange) 30 9987-31 0013 mm (1.2204-1.2205)
Pin Bore ID (Green) 31.0088-31 0114 mm (1.2208-1.2209 inch)
Pin Bore ID (Orange) 31.0114-31.0140 mm (1.2209-1.2210 inch)
Pin Bore Clearance 0.0101-0.0153 mm (0.0004-0.0006 inch)
Piston Ring (Compression)
Side Clearance (Top Ring) (Keystone-Type Ring)
Side Clearance (Second Ring) 0.0390-0.0790 mm (0.0015-0.0031 inch)
Gap (Top Ring) (1-6) 0.2521-0.5658 mm (0.0100-0.0224 inch)
Gap (Top Ring) (7-8) 0.2929-0.6095 mm (0.0115-0.0240 inch)
Gap (Second Ring) (1-6) 0.5821-0.8886 mm (0.0229-0.0345 inch)
Gap (Second Ring) (7-8) 0.6629-0.9295 mm( 0.0245-0.0366 inch)
Piston Ring (Oil)
Side Clearance 0.0400-0.0900 mm (0.0016-0.0035 inch)
Gap (1-6) 0.2121-0.5686 mm (0.0084-0.0224 inch)
Gap (7-8) 0.2529-0 6095 mm (0.0100-0.0240 inch)