Piston Pin: Specifications

PISTONS

Compression Height (Pin Bore Centerline To Piston Top) 38.7 mm (1.524 in.)

Piston Ring End Gap (Clearance),
#1 Compression Ring 0.40.0.55 mm (0.016 - 0.022 in.)

#2 Compression Ring 0.40 - 0.55 mm (0.016 - 0.022 in.)

Oil Control Ring N/A Segmented Ring

Piston Ring Side Clearance,
#1 Compression Ring 0.03 - 0.05 mm (0.001. - 0.002 in.)

#2 Compression Ring 0.03 - 0.05 mm (0.001 - 0.002 in.)

Oil Control Ring 0.04 - 0.09 mm (0.0015 - 0.0035 in.)

Piston Ring Thickness,
#1 Compression Ring 1.75 mm (0.069 in.)

#2 Compression Ring 1.75 mm (0.069 in.)

Oil Control Ring 3.44 - 3.47 mm 0.135 - (0.137 in.)

Piston Ring Groove Height,
#1 Compression Ring 1.78 - 1.80 mm (0.070 - 0.071 in.)

#2 Compression Ring 1.78 - 1.80 mm (0.070 - 0.071 in.)

Oil Control Ring 3.51 - 3.53 mm (0.138 - 0.139 in.)

Piston Ring Groove Diameter (Inside),
#1 Compression Ring Groove 84.30 - 84.50 mm (3.319 - 3.327 in.)

#2 Compression Ring Groove 83.70 - 83.90 mm (3.295 - 3.303 in.)

Oil Control Ring Groove 82.80 - 83.00 mm (3.260 - 3.268 in.)

Piston Ring Bore Diameter 25.004 - 25.013 mm (0.9844 - 0.9848 in.)

Piston Pin Diameter 24.991 - 25.000 mm (0.9839 - 0.9843 in.)

Piston Pin To Bore Clearance 0.004 - 0.022 mm (0.0015 - 0.0085 in.)

Piston Pin I.D. 15.0 mm (0.591 in.)

Piston Pin Length 66.0 mm (2.598 in.)