Toyota Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston and piston ring

Piston diameter STD

Mark 1  ....................................................................................................................................................  93.902 - 93.912 mm (3.6969 - 3.6973 inch)
Mark 2  ....................................................................................................................................................  93.912 - 93.920 mm (3.6973 - 3.6976 inch)
Mark 3 ....................................................................................................................................................   93.920 - 93.930 mm (3.6976 - 3.6980 inch)
O/S 0.5  ...................................................................................................................................................  94.402 - 94.430 mm (3.7168 - 3.7177 inch)

Piston oil clearance 

STD  ............................................................................................................................................................  0.090 - 0.111 mm (0.0035 - 0.0044 inch)
Maximum  ................................................................................................................................................................................  0.13 mm (0.0051 inch)

Piston ring groove clearance

No.1  ............................................................................................................................................................  0.030 - 0.080 mm (0.0012 - 0.0031 inch)
No.2 ............................................................................................................................................................   0.030 - 0.070 mm (0.0012 - 0.0028 inch)

Piston ring end gap

Standard

No.1  ......................................................................................................................................................  0.300 - 0.400 mm (0.0118 - 0.0158 inch)
No.2 ......................................................................................................................................................   0.400 - 0.550 mm (0.0157 - 0.0217 inch)
Oil ........................................................................................................................................................   0.130 - 0.380 mm (0.0051 - 0.0150 inch)

Maximum

No.1  ..................................................................................................................................................................................  1.10 mm (0.0433 inch)
No.2  ..................................................................................................................................................................................  1.20 mm (0.0472 inch)
Oil  .....................................................................................................................................................................................  1.15 mm (0.0453 inch)