Procedures

Cylinder Bore Honing


Ensure all abrasives are removed from engine parts after honing. It is recommended that a solution of soap and hot water be used with a brush and the parts then thoroughly dried. The bore can be considered clean when it can be wiped clean with a white cloth and the cloth remains clean. Oil the bores after cleaning to prevent rusting.








- Used carefully, the cylinder bore resizing hone, equipped with 220 grit stones, is the best tool for this honing procedure. In addition to deglazing, it will reduce taper and out of round as well as removing light scuffing, scoring or scratches. Usually a few strokes will clean up a bore and maintain the required limits.

- Deglazing of the cylinder walls may be done using a cylinder surfacing hone, equipped with 280 grit stones, if the cylinder bore is straight and round. 20 to 60 strokes depending on the bore condition, will be sufficient to provide a satisfactory surface. Use a light honing oil. Do not use engine or transmission oil, mineral spirits or kerosene. Inspect the cylinder walls after each 20 strokes.

- Honing should be done by moving the hone up and down fast enough to get a cross hatch pattern (1). When hone marks intersect at 40 to 60 degrees (2), the cross hatch angle is most satisfactory for properly seating the rings.

- A hone motor speed between 200 to 300 RPMs is necessary to obtain the proper cross hatch angle. The number of up and down strokes per minute can be regulated to get the desired 40 to 60 degree angle. Faster up and down strokes increase the cross hatch angle.

- After honing, it is necessary that the block be cleaned again to remove all traces of abrasive.