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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine - 3.0L V6 - VIN S & 1) >> Overhaul >> Cylinder Block Assembly >> Fitting Pistons

Fitting Pistons

WARNING: This page is about a different variant/trim than selected.
  1. To determine if piston-to-cylinder clearance is within specification, measure piston skirt diameter 1.65" (42 mm) from top of piston, at 90-degree angle to piston pin.
  2. Ensure piston diameter is within specification. See PISTONS, PINS & RINGS  table under ENGINE SPECIFICATIONS. Measure cylinder bore diameter just below top of bore, and just above bottom of cylinder bore.
  3. Ensure cylinder bore diameter is within specification. See CYLINDER BLOCK  table under ENGINE SPECIFICATIONS. Determine piston clearance. Replace piston and/or bore cylinder block if clearance is not as specified. See PISTONS, PINS & RINGS  table under ENGINE SPECIFICATIONS. Pistons are available in 3 grades and colors, and can be coated or uncoated. If cylinder bore diameter measures in lower one-third of specification, use Red dot pistons. If cylinder bore diameter measures in middle one-third of specification, use Blue dot pistons. If cylinder bore diameter measures in upper one-third of specification, use Yellow dot pistons. Cylinder block can be bored for.010" (.25 mm) or.020" (.50 mm) oversize pistons.
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