SUPERTECH PERFORMANCE
Cylinder honing recommendation
For use with our piston rings we recommend a Plateau Honing with a Cylinder Bore cross hatch angle of 35-40 degrees.
For our Piston Rings we recommend a roughness of:
Rz = 59-138 μ in [=1.5-3.5μm] or
Ra= 15-35 μ in [=0.4-0.9 μm]
To reach this roughness the manufacturers of honing machines and accessories recommend to use for a gray cast iron engine block
Conventional stones #220- #280 grit Diamond stones #325- #550 grit
After honing with either conventional or diamond stone, the same manufacturers suggest to finish your honing by smoothing the surface with a fine grit conventional abrasive (#400-#600 grit) or to sweep the bores with a flexible brush or a nylon bristle plateau honing tool. This is necessary to get rid of jagged peaks and folded and torn material.
important note-
Be sure to reconfirm with your honing equipment manufacturer that the recommended stone grit will produce our Rz and Ra roughness recommendations.