Dimension & Clearance Specifications - Piston Rings

Piston Ring Grove Depth
Top Compression 4.019 - 4.146 mm (0.158 - 0.163 inch)
2nd Compression 4.214 - 4.341 mm (0.0166 - 0.171 inch)
Oil Control 3.814 - 3.941 mm (0.150 - 0.155 inch)

Piston Ring End Gap
Top Compression 0.305 - 0.559 mm (0.012 - 0.022 inch)
2nd compression 0.762 - 1.016 mm (0.030 - 0.040 inch)
Oil Control 0.254 - 0.762 mm (0.010 - 0.030 inch)

Piston Ring Side Clearance
Top Compression 0.033 - 0.079 mm (0.0013 - 0.0031 inch)
2nd Compression 0.033 - 0.079 mm (0.0013 - 0.0031 inch)
Oil Control 0.023 - 0.201 mm (0.0009 - 0.0079 inch)

Piston Ring Width
Top Compression 1.176 - 1.197 mm (0.0463 - 0.0471 inch)
2nd Compression 1.476 - 1.497 mm (0.0581 - 0.0589 inch)
Oil Control 1.854 - 2.007 mm (0.073 - 0.079 inch)