How To Select Connecting Rod Bearing

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

When New Connecting Rod and Crankshaft are Used

Check pin journal grade ("0", "1", or "2") on front of crankshaft, and select connecting rod bearing of the same grade.

NOTE: There is no grading for connecting rod big end diameter.

Fig 1: Identification Code, Pin Journal And Journal Diameter Grade

Courtesy of NISSAN NORTH AMERICA, INC.

When Crankshaft and Connecting Rod are Reused

Measure the connecting rod big end diameter. Refer to "INSPECTION AFTER DISASSEMBLY ".
Make sure that the connecting rod big end diameter is within the standard value.
Measure the crankshaft pin journal diameter. Refer to "INSPECTION AFTER DISASSEMBLY ".
Determine the grade of crankshaft pin journal grade by corresponding to the measured dimension in "Crankshaft pin journal diameter" column of "Connecting Rod Bearing Selection Table".

Select connecting rod bearing of the same grade.

CONNECTING ROD BEARING SELECTION CHART

Unit: mm (in)
Connecting rod big end diameter	57.000 - 57.013 (2.2441 - 2.2446)

Unit: mm (in)
Crankshaft		Connecting rod bearing
Crankshaft pin journal diameter	Grade (Mark)	Dimension (Bearing thickness range)	Bearing grade No.	Color
53.968 - 53.974 (2.1247 - 2.1250)	0	1.500 - 1.503 (0.0591 - 0.0592)	STD 0	Black
53.962 - 53.968 (2.1245 - 2.1247)	1	1.503 - 1.506 (0.0592 - 0.0593)	STD 1	Brown
53.956 - 53.962 (2.1242 - 2.1245)	2	1.506 - 1.509 (0.0593 - 0.0594)	STD 2	Green

Undersize Bearings Usage Guide

When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod bearings, use undersize (US) bearings.

When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing installed, and grind crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.

CAUTION: In grinding crankshaft pin to use undersize bearings, keep the fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)].

Fig 2: Identifying Crankshaft Journals And Crankshaft Pins

Courtesy of NISSAN NORTH AMERICA, INC.

BEARING UNDERSIZE SPECIFICATIONS

Unit: mm (in)
Size	Thickness
US 0.25 (0.0098)	1.626 - 1.634 (0.0640 - 0.0643)