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Home >> Chevrolet >> 1987 >> Sprint Base, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.0L 3-CYL - VIN [5] & 1.0L 3-CYL Turbo - VIN [2] >> Overhaul >> Main Bearings >> Oversize Bearing

Oversize Bearing

  1. The following procedure is used to select an oversize bearing in the event that the crankshaft must be repaired or replaced. Regrind journal to finished diameter of 1.7612-1.7618" (44.734-44.75 mm).
  2. Measure reground journal with a micrometer. From measurement obtained and letters stamped on oil pan mating surface, select new undersize bearing.
NOTE: Oversize bearings are available in 5 sizes. Paint marks are applied for identification purposes. Each color indicates thickness at center of bearing.
CRANKSHAFT JOURNAL OVERSIZE BEARINGS

Color Code Bearing Thickness: In. (mm)
Green & Red .0835-.0836 (2.121-2.123)
Black & Red .0836-.0837 (2.123-2.126)
Red Only .0837-.0838 (2.126-2.129)
Yellow & Red .0838-.0839 (2.129-2.131)
Blue & Red .0839-.0840 (2.131-2.134)
CRANKSHAFT JOURNAL OVERSIZE BEARING SELECTION

Journal Diameter Diameter Block Letter Bearing Color
1.7616-1.7618" (44.74-44.75 mm)
A Green & Red
B Black & Red
C Red
1.7614-1.7616" (44.73-44.74 mm)
A Black & Red
B Red
C Yellow & Red
1.7612-1.7614" (44.72-44.73 mm)
A Red
B Yellow & Red
C Blue & Red