Piston Ring, Engine

Piston ring
Ring-to-groove clearance
Top
Standard (New) 0.055 - 0.080 (0.0022 - 0.0031)
Limit 0.13 (0.005)
Second
Standard (New) 0.030 - 0.055 (0.0012 - 0.0022)
Limit 0.13 (0.005)
Ring end gap
Top
Standard (New) 0.25 - 0.40 (0.010 - 0.016)
Limit 0.70 (0.028)
Second
Standard (New) 0.40 - 0.55 (0.016 - 0.022)
Limit 0.85 (0.033)
Oil
Standard (New)
0.20 - 0.70 (0.008 - 0.028)*1
0.20 - 0.50 (0.008 - 0 020)*2
Limit
0.80 (0.031)
0.80 (0.031)

*1: RIKEN manufactured piston ring.
*2: TEIKOKU PISTON RING manufactured piston ring.