Crankshaft Main Bearing Selection
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
The main bearings are "select fit" to achieve proper oil clearances. For main bearing selection, the crankshaft position sensor target wheel has grade identification marks stamped into it (Fig 1). These marks are read from left to right, corresponding with journal number 1, 2, 3, 4 and 5. The crankshaft position sensor target wheel is mounted to the number 8 counter weight on the crankshaft.
NOTE:
Service main bearings are coded. These codes identify what size (grade) the bearing is.
MAIN BEARING SELECTION CHART-4.7L
| GRADE MARKING | SIZE mm (in.) | FOR USE WITH JOURNAL SIZE |
|---|---|---|
| A | 0.008 mm U/S | 63.488-63.496 mm |
| A | (0.0004 in.) U/S | (2.4996-2.4999 in.) |
| B | NOMINAL | 63.496-63.504 mm (2.4999-2.5002 in.) |
| C | 0.008 mm O/S | 63.504-63.512 mm |
| C | (0.0004 in.) O/S | (2.5002-2.5005 in.) |