Toyota Workshop Service and Repair Manuals

Piston: Specifications

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.)