Piston, Engine

* Diameter:
Grade 1, (Green) 82.370-82.380 mm (3.2429-3.2433 inch)
Grade 2, (None) 82.380-82.390 mm (3.2433-3.2437 inch)
Grade 3, (Brown) 82.390-82.400 mm (3.2437-3.2441 inch)
Piston-to-Bore Clearance:
Nominal 0.020-0.040 mm (0.0008-0.0016 inch)
Limit 0.070 mm (0.0028 inch)
Ring Groove Width:
Compression, Top 1.23-1.25 mm (0.0484-0.0492 inch)
Compression, Bottom 1.52-1.54 mm (0.0598-0.0606 inch)
Oil 3.01-3.03 mm (0.1185-0.1193 inch)

* Measured perpendicular to, and 12.6 mm (1/2 inch) below piston pin hole center prior to coating.