Cylinder Bore Measuring

TOOL REQUIRED
^ J 8087 Cylinder Bore Checking Gauge





1. Measure the cylinder bore. Use the cylinder bore checking gauge and measure for the following conditions:
^ Wear
^ Taper
^ Runout
^ Ridging

2. If the bore is worn beyond limits it may be re-bored, honed, and fitted with oversize pistons.
3. Leave sufficient material to allow finish honing in conjunction with fitting the piston.
4. If the bore is glazed but otherwise serviceable, break the glaze lightly with a finishing hone and replace the piston rings.
5. Rough hone with an 80 grit stone and finish hone with a 280 grit stone.
6. Make sure the honing stones are clean, sharp and straight. Move the stone slowly up and down to produce a 45 degrees cross-hatch pattern.
7. Clean the bore thoroughly with soap and hot water. Dry the bore and use a clean towel with engine oil to scrub the cylinder bore. Continue scrubbing the bore with clean towels and engine oil until the towel stays clean.
8. Re-measure the bore again.