Engine - Crankshaft and Bearing Size Identification
Number 85-6(Gasoline)-32 Date 6/85Subject: CRANKSHAFT & BEARING SIZE IDENTIFICATION & REPLACEMENT
1982-85 SUNBIRD WITH 1.8L L-4 ENGINE (VIN CODE 0)
The following information identifies block and crankshaft size in the 1.8L (VIN Code 0) engine used in 1982-85 Sunbird models. Block size of standard or oversize is identified by "0" or "1" marked on the pan rail, while crankshaft size of standard or .010" undersize is identified by color. Use the appropriate chart for the crankshaft that is installed in the engine and select the proper color bearing for either standard or oversize block. Use the "plasti-gauge" method to determine that the bearing selected will provide the proper clearance.
A copy of the following information should be inserted in Section 6A1 of the 1985 Sunbird Service Manual for future reference.
CRANKSHAFT ASSEMBLY:
1 - LOWER BEARINGS
2 - UPPER BEARINGS
3 - WITH BOLTS FINGER TIGHT, THRUST CRANKSHAFT REARWARD TO SET AND ALIGN BEARING CAPS. THEN THRUST CRANKSHAFT FORWARD TO ALIGN REAR FACE OF GUIDE BEARING. TORQUE ALL BOLTS TO 77 N-m (57 ft.lbs.).
4 - FILL BEARING CAP NUMBER 5 HOLES WITH SEALING COMPOUND ON BOTH SIDES, UNTIL SEALER RUNS OUT THROUGH THE BEARING CAP BASE AT THE INTERSECTION WITH THE BLOCK.
PROCEDURE:
I. DETERMINE BLOCK SIZE
a. STANDARD MARKED "0" ON PAN RAIL
b. OVERSIZE MARKED "1" ON PAN RAIL II. DETERMINE CRANKSHAFT SIZE (BY COLOR CODE-SEE CHART) III. SELECT BEARING SIZE FROM COLUMN DIRECTLY TO RIGHT OF CRANKSHAFT COLOR CODE. IV. ORDER BEARINGS BY COLOR CODE SPECIFIED
V. USE "PLASTI-GAUGE" METHOD TO DETERMINE BEARING CLEARANCE.
BEARING SELECTION CHART STANDARD SIZE CRANKSHAFT
CYLINDER BLOCK CRANKSHAFT BEARING BEARING
IDENTIFICATION IDENTIFICATION UPPER (BLOCK) LOWER (CAP)
0-STANDARD BROWN BROWN BROWN
GREEN BROWN GREEN
1-OVERSIZE GREEN GREEN GREEN
BROWN GREEN BROWN
UNDERSIZE (.010) CRANKSHAFT
0-STANDARD BROWN/BLUE BROWN/BLUE BROWN/BLUE
GREEN/BLUE BROWN/BLUE GREEN/BLUE
1-OVERSIZE BROWN/BLUE GREEN/BLUE BROWN/BLUE
GREEN/BLUE GREEN/BLUE GREEN/BLUE