Cylinder bore diameter by piston size (NA8)

Cylinder bore mm {in} Standard 83.000—83.019 {3.2678—3.2684} 0.25 {0.010} oversize 83.256—83.263 {3.2778—3.2780} 0.50 {0.020} oversize 83.506—83.513 {3.2877—3.2879}Cylinder bore mm {in} Standard 83.000—83.019 {3.2678—3.2684} 0.25 {0.010} oversize 83.256—83.263 {3.2778—3.2780} 0.50 {0.020} oversize 83.506—83.513 {3.2877—3.2879}

Measure X and Y at three axial levels A/B/C in each cylinder. Base reboring on the actual oversize-piston diameter; all cylinders must have the same diameter.