Piston, Engine

PISTON DIAMETER
At 28.0 mm (1.102 in.) from piston head 78.917 to 78.927 mm (3.1070 to 3.1074 in.)

PISTON OIL CLEARANCE
Standard 0.073 to 0.096 mm (0.0029 to 0.0038 in.)
Maximum 0.10 mm (0.0039 in.)

PISTON PIN BORE DIAMETER
A 20.006 to 20.009 mm (0.7876 to 0.7878 in.)
B 20.010 to 20.012 mm (0.7878 to 0.7879 in.)
C 20.013 to 20.015 mm (0.7879 to 0.7880 in.)

PISTON PIN OUTER DIAMETER
A 20.004 to 20.007 mm (0.7876 to 0.7877 in.)
B 20.008 to 20.010 mm (0.7877 to 0.7878 in.)
C 20.011 to 20.013 mm (0.7878 to 0.7879 in.)

PISTON PIN OIL CLEARANCE
Piston pin x Piston
Standard 0.002 to 0.011 mm (0.0001 to 0.0004 in.)
Maximum 0.011 mm (0.0004 in.)
Piston pin x Connecting rod
Standard -0.001 to 0.017 mm (-0.00004 to 0.0007 in.)
Maximum 0.017 mm (0.0007 in.)

RING GROOVE CLEARANCE
No. 1 0.02 to 0.07 mm (0.0008 to 0.0028 in.)
No. 2 0.03 to 0.07 mm (0.0012 to 0.0028 in.)
Oil 0.03 to 0.11 mm (0.0012 to 0.0043 in.)

PISTON RING END GAP
Standard No. 1 0.25 to 0.35 mm (0.0098 to 0.0138 in.)
Standard No. 2 0.35 to 0.50 mm (0.0138 to 0.0197 in.)
Standard Oil 0.15 to 0.40 mm (0.0059 to 0.157 in.)
Maximum No. 1 1.05 mm (0.0413 in.)
Maximum No. 2 1.20 mm (0.0472 in.)