Fitting Pistons
- Measure piston diameter .709" (18.01 mm) below oil ring groove, at 90-degree angle to piston pin. Ensure piston diameter is within specification. See PISTONS PINS & RINGS SPECIFICATIONS table under ENGINE SPECIFICATIONS at end of article. Oversize pistons are available in .010" (.25 mm) and .020" (.51 mm).
- Cylinder bore diameter is measured at top, center and bottom of cylinder bore. Ensure piston clearance is within specification. See PISTONS PINS & RINGS SPECIFICATIONS table under ENGINE SPECIFICATIONS at end of article.