Piston Ring, Engine

Piston
Width of ring groove
No. 1 1.53 - 1.55 mm (0,0602 - 0.0610 inch)
No. 2 1.51 - 1.53 mm (0.0594 - 0.0602 inch)
Oil ring 3.010 - 3.030 mm (0.1185 - 0.1193 inch)
Rings for Service 0.25 mm (0.010 inch), 0.50 mm (0.020 inch) Oversize

Piston Ring
Number of rings per piston 3
Compression ring 2
Oil ring 1
Compression ring type
No. 1 Barrel & inner bevel type
No. 2 Taper & undercut type
Oil ring type 3-piece type
Ring end gap
No.1
Specifications-3.5 0.20 - 0.30 mm (0.0079 - 0.0118 inch)
Limit 0.8 mm (0.031 inch)
No.2
Specifications-3.5 0.45 - 0.60 mm (0.0177 - 0.0236 inch)
Limit 0.8 mm (0.031 inch)
Oil ring side rail
Specifications-3.5 0.2 - 0.7 mm (0.0079 - 0.0276 inch)
Limit 1 mm (0.039 inch)
Ring side clearance
No.1
Specifications-3.5 0.04 - 0.08 mm (0.0016 - 0.0315 inch)
Limit 0.1 mm (0.0039 inch)
No.2
Specifications-3.5 0.02 - 0.06 mm (0.0008 - 0.0024 inch)
Limit 0.1 mm (0.0039 inch)
Rings for Service 0.25 mm (0.010 inch), 0.50 mm (0.020 inch), Oversize