Lexus 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  .............................................................................................................................................................  0.020 to 0.070 mm (0.0008 to 0.0028 in.)

Piston ring end gap

Standard

No. 1  ........................................................................................................................................................  0.23 to 0.33 mm (0.0091 to 0.0130 in.)
No. 2  ........................................................................................................................................................  0.35 to 0.45 mm (0.0138 to 0.0177 in.)
Oil (Side rail)  ..........................................................................................................................................  0.10 to 0.40 mm (0.0039 to 0.0157 in.)

Maximum

No. 1  ....................................................................................................................................................................................  0.40 mm (0.0157 in.)
No. 2  ....................................................................................................................................................................................  0.50 mm (0.0197 in.)
Oil (Side rail)  .......................................................................................................................................................................  0.45 mm (0.0177 in.)