Piston to Cylinder Bore Clearance
PISTON TO CYLINDER BORE CLEARANCECylinder Bore inner Diameter
^ Using a bore gauge, measure cylinder bore for wear, out-of-round and taper at six different points on each cylinder. ("X" and "Y" directions at "A", "B" and "C") ("Y" is in longitudinal direction of engine)
Standard inner diameter: 95.500 - 95.530 mm (3.7598 - 3.7610 inch)
Wear limit: 0.20 mm (0.0079 inch)
Out-of-round (Difference between "X" and "Y"):
Limit: 0.015 mm (0.0006 inch)
Taper (Difference between "A" and "C"):
Limit: 0.010 mm (0.0004 inch)
^ If the measured value exceeds the limit, or if there are scratches and/or seizure on the cylinder inner wall, hone or re-bore the inner wall.
^ Oversize piston is provided. When using oversize piston, rebore cylinder so that the clearance of the piston-to-cylinder bore satisfies the standard.
CAUTION: When using oversize piston, use oversize pistons for all cylinders with oversize piston rings.
Oversize (OS) : 0.2 mm (0.008 inch)