Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Piston Ring, Engine

Piston Ring

Number of rings per piston 3

Compression ring 2

Oil ring 1

Compression ring type
No.1 Inner bevel type.
No.2 Under cut type

Oil ring type 3 - piece type

Ring end gap
No.1
Specification 0.20 - 0.35 mm (0.0079 - 0.0138 inch)
Limit 0.8 mm (0.031 inch)

No.2
Specification 0.37 - 0.52 mm (0.0146 - 0.0205 inch)
Limit 0.8 mm (0.031 inch)

Oil ring side rail
Specification 0.2 - 0.7 mm (0.0079 - 0.0276 inch)
Limit 1.0 mm (0.039 inch)

Ring side clearance
No.1
Specification 0.04 - 0.08 mm (0.0016 - 0.0031 inch)
Limit 0.1 mm (0.004 inch)

No.2
Specification 0.03 - 0.07 mm (0.0012 - 0.0028 inch)
Limit 0.1 mm (0.004 inch)
Rings for service 0.25 mm (0.010 inch), 0.50 mm (0.020 inch)