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Home >> Saturn >> 1997 >> SW2 Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 1.9L 4-CYL - VINS [7 & 8] >> Overhaul >> Cylinder Block Assembly >> Cylinder Bores

Cylinder Bores

  1. Measure diameter of cylinder bore 2 1/2" (63.5 mm) from deck surface. Measure in 2 directions (in-line with crankshaft and at 90-degree angle to crankshaft), then average the measurements. If cylinder dimensions are not as specified, machine cylinders as necessary, and replace pistons. See CYLINDER BLOCK  table under ENGINE SPECIFICATIONS.
  2. Pistons are available in .0050" (.125 mm) and .0157" (.400 mm) oversize. To calculate how much material to remove when honing or boring cylinder, add diameter of piston to specified oil clearance. See PISTONS, PINS & RINGS  table under ENGINE SPECIFICATIONS. Subtract .002" (.050 mm) from the sum to allow for finish honing.
  3. Bore cylinder to .0015-.0025" (.038-.062 mm) less than desired finished size. Using 120-150 grit stones, hone cylinder to within .0002" (.005 mm) of finished size. Finish honing to desired size using 380-420 grit stones in a 45-degree crosshatch pattern.
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