Piston Ring, Engine

Piston Groove Clearance
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)





Piston Ring End Gap
Using a piston, push the piston ring a little beyond the bottom of the ring travel, 110 mm (4.33 inch) from the top of the cylinder block.
Standard end gap:
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 end gap:
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)