Fitting Pistons Ford Aspire I

1. To determine if piston-to-cylinder clearance is within specification, measure piston skirt diameter at 90-degree angle to piston pin, .650" (16.5 mm) from bottom of oil ring groove.
2. Measure cylinder bore at top, center and bottom of cylinder bore. Ensure piston clearance is within specification. See PISTONS, PINS & RINGS table and «CYLINDER BLOCK»(ref-54546-S07916365112001011700000) table under ENGINE SPECIFICATIONS. If measurements are not within specification, replace components and/or bore and hone cylinders as necessary. Oversize pistons are available in .010" (.25 mm) and .020" (.51 mm).