Toyota Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston ring

Piston ring groove clearance    

1MZ-FE 

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 ..........................................................................................................................................................  0.04 to 0.12 mm (0.0016 to 0.0047 inch)

3MZ-FE

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 ..........................................................................................................................................................  0.03 to 0.11 mm (0.0012 to 0.0043 inch)

Specified end gap    

1MZ-FE 

No. 1 ......................................................................................................................................................  0.25 to 0.95 mm (0.0098 to 0.0374 inch)
No. 2 ......................................................................................................................................................  0.35 to 1.05 mm (0.0138 to 0.0413 inch)
Oil (Side rail) .........................................................................................................................................  0.15 to 1.00 mm (0.0059 to 0.0394 inch)

3MZ-FE 

No. 1 ......................................................................................................................................................  0.30 to 0.95 mm (0.0118 to 0.0374 inch)
No. 2 ......................................................................................................................................................  0.50 to 1.05 mm (0.0197 to 0.0413 inch)
Oil ..........................................................................................................................................................  0.15 to 1.00 mm (0.0059 to 0.0394 inch)