Axial Clearance:The vertical clearance remaining in the piston ring groove after the ring is installed. Depending on the application, the vertical clearance is typically 0.001-0.003-inch.

This demands a somewhat tight axial, or vertical, clearance between the ring groove and the piston. JE's axial clearance recommendations will vary with specific pistons, but a generic clearance of ...

Axial Clearance:The vertical clearance remaining in the piston ring groove after the ring is installed. Depending on the application, the vertical clearance is typically 0.001-0.003-inch.