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.

Service main bearings are available in four grades. The chart below identifies the four service grades available.

CRANKSHAFT MAIN BEARING SELECTION

Crankshaft Marking	JOURNAL SIZE SIZE mm (in.)
"R" Size	63.488 - 63.496 mm (2.4995 - 2.4998 in.)
"S" Size	63.496 - 63.500 mm (2.4998 - 2.4999 in.)
"T" Size	63.500 - 63.504 mm (2.4999 - 2.501 in.)
"U" Size	63.504 - 63.512 mm (2.5001 - 2.5004 in.)
Bearing size
Bearing Code	Size	Application
Upper Bearing
A	.2.443 - 2.447 mm (.0961 - .0963 in.)	Use with crankshaft size "R"
B	2.439 - 2.443 mm (0.960 - .0961 in.)	Use with crankshaft "S, T"
C	2.435 - 2.439 mm (.0958 - .0960 in.)	Use with crankshaft "U"
Lower Bearing Main "1" and "4"
"1"	2.441 - 2.447 mm (.0961 - .0963 in.)	Use with crankshaft "R, S"
"2"	2.435 - 2.441 mm (.0958 - .0962 in.)	Use with crankshaft "T, U"
Lower Main Bearing "2" and "3"
"3"	2.429 - 2.435 mm (.0956 - .0958 in.)	Use with crankshaft "R, S"
"4"	2.423 - 2.429 mm (.0953 - .0956 in.)	Use with crankshaft "T, U"
Bearing Clearances
Main "1, 4"
Crankshaft "R"	.004 - .034 mm ( .00015 - .0013 in.)
Crankshaft "S"	.004 - .030 mm ( .00015 - .0011 in.)
Crankshaft "T"	.006 - .032 mm (.0002 - .0012 in.)
Crankshaft "U"	.002 - .032 mm (.00007 - 0012 in.)
Main "2, 3"
Crankshaft "R"	.016 - .046 mm (.0006 - .0018 in.)
Crankshaft "S"	.016 - .042 mm (.00062 - .016 in.)
Crankshaft "T"	.018 - .044 mm (.0007 - .0017 in.)
Crankshaft "U"	.014 - .044 mm (.0005 - .0017 in.)