Fitting Pistons
- After checking block for cracks, scratches or other abnormalities, measure bores at 3 levels to check distortion. If any distortion exceeds .001" (.02 mm) from standard bore size, block must be rebored and oversize pistons installed.NOTE: Pistons are available in standard, .25 mm, .50 mm, .75 mm and 1.0 mm oversizes. Oversize pistons are stamped on crown to indicate oversize amount.
- Check outside diameter of piston by measuring at a point .079" (2 mm) from bottom of skirt and at 90° to pin bore. Determine amount of cylinder reboring required to meet specified clearance.