Lexus Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Ring

Groove Clearance

No. 1 ............................................................................................................................................................  0.03 to 0.08 mm (0.0012 to 0.0031 inch)
No. 2 ............................................................................................................................................................  0.02 to 0.06 mm (0.0008 to 0.0024 inch)
Oil (Side Rail) .............................................................................................................................................  0.03 to 0.11 mm (0.0012 to 0.0043 inch)

Ring End Gap

Standard

No. 1 ......................................................................................................................................................  0.30 to 0.40 mm (0.0118 to 0.0157 inch)
No. 2 ......................................................................................................................................................  0.50 to 0.60 mm (0.0197 to 0.0236 inch)
Oil (Side Rail) .......................................................................................................................................  0.15 to 0.40 mm (0.0059 to 0.0157 inch)

Maximum

No. 1 ..................................................................................................................................................................................  0.95 mm (0.0374 inch)
No. 2 ..................................................................................................................................................................................  1.05 mm (0.0413 inch)
Oil (Side Rail) ....................................................................................................................................................................  1.00 mm (0.0394 inch)