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 (0.0113 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.)