Dimension & Clearance Specifications - Piston

Piston
Clearance (39 mm From Top of Piston) 0.010 - 0.051 mm (0.0004 - 0.0020 inch)

Piston Ring Groove 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)