Toyota Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Ring

Groove Clearance

No. 1 ............................................................................................................................................................  0.02 to 0.07 mm (0.0008 to 0.0028 inch)
No. 2 ............................................................................................................................................................  0.02 to 0.06 mm (0.0008 to 0.0024 inch)
Oil ................................................................................................................................................................  0.07 to 0.15 mm (0.0028 to 0.0060 inch)

End Gap

Standard

No. 1 ......................................................................................................................................................  0.30 to 0.40 mm (0.0118 to 0.0157 inch)
No. 2 ......................................................................................................................................................  0.40 to 0.50 mm (0.0157 to 0.0197 inch)
Oil (Side Rail) .......................................................................................................................................  0.10 to 0.40 mm (0.0039 to 0.0157 inch)

Maximum

No. 1 ......................................................................................................................................................................................  1.0 mm (0.039 inch)
No. 2 ......................................................................................................................................................................................  1.1 mm (0.043 inch)
Oil (Side Rail) ........................................................................................................................................................................  1.0 mm (0.039 inch)