Cylinder Block Assembly: Service and Repair

Cylinder Reboring Procedure
1. Determine the size of the oversize pistons to be installed according to the largest bore diameter.

2. When the oversize is determined, measure the outside diameter of the pistons at a grading point below the upper face of the piston (grading positions) and in a direction at a right angle to the crankshaft

Calculate the cylinder bore diameter to be obtained after reboring, using the following formula:

Cylinder bore diameter (after boring) = P + C - H

P: Oversize piston diameter: mm (in.)
C: Piston clearance : 0.045 - 0.065 mm (0.0018 - 0.0026 in.)
H: Allowance for honing: 0.O3mm (0.0012 in.) or less