Toyota Workshop Service and Repair Manuals

Piston Ring: Specifications

PISTON RING

Piston ring groove clearance

No. 1  ..........................................................................................................................................................  0.020 to 0.070 mm (0.0008 to 0.0028 in.)
No. 2  ..........................................................................................................................................................  0.020 to 0.060 mm (0.0008 to 0.0024 in.)
Oil  .............................................................................................................................................................  0.070 to 0.150 mm (0.0028 to 0.0059 in.)

Piston ring end gap

Standard
No. 1  ..............................................................................................................................................................  0.25 to 0.35 mm (0.0098 to 0.0138 in.)
No. 2  ..............................................................................................................................................................  0.50 to 0.60 mm (0.0197 to 0.0236 in.)
Oil (Side rail)  ................................................................................................................................................  0.10 to 0.40 mm (0.0039 to 0.0157 in.)

Maximum
No. 1  ..........................................................................................................................................................................................  0.50 mm (0.0197 in.)
No. 2  ..........................................................................................................................................................................................  0.85 mm (0.0335 in.)
Oil (Side rail)  .............................................................................................................................................................................  0.60 mm (0.0236 in.)