Infiniti QX56 (JA60). Manual - part 488

EM-106

< DISASSEMBLY AND ASSEMBLY >

HOW TO SELECT PISTON AND BEARING

Main Bearings Selection Table (No. 2, 3 and 4 journal)

Main Bearings Grade Table (All Journals)

Unit: mm (in)

WBIA0609E

Grade number

UPR/LWR

Thickness 

Identification color

Remarks

0

—

2.483 - 2.486 (0.0978 - 0.0979)

Black

Grade is the same for upper 
and lower bearings.

1

—

2.486 - 2.489 (0.0979 - 0.0980)

Brown

2

—

2.489 - 2.492 (0.0980 - 0.0981)

Green

3

—

2.492 - 2.495 (0.0981 - 0.0982)

Yellow

4

—

2.495 - 2.498 (0.0982 - 0.0983)

Blue

5

—

2.498 - 2.501 (0.0983 - 0.0985)

Pink

6

—

2.501 - 2.504 (0.0985 - 0.0986)

Purple

7

—

2.504 - 2.507 (0.0986 - 0.0987)

White            

8

—

2.507 - 2.510 (0.0987 - 0.0988)

Red

HOW TO SELECT PISTON AND BEARING

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Use Undersize Bearing Usage Guide

• Use undersize (US) bearing when the oil clearance with standard size main bearing is not within specifica-

tion.

• When using undersize (US) bearing, measure the inside diameter of the bearing installed and grind the jour-

nal until the oil clearance falls within specification.

Bearing undersize table

Unit: mm (in)

CAUTION:

Do not damage fillet R when grinding crankshaft journal in

order to use undersized bearing (All journals). 

01

UPR

2.483 - 2.486 (0.0978 - 0.0979)

Black

Grade and color are different 
for upper and lower bearings.

LWR

2.486 - 2.489 (0.0979 - 0.0980)

Brown

12

UPR

2.486 - 2.489 (0.0979 - 0.0980)

Brown

LWR

2.489 - 2.492 (0.0980 - 0.0981)

Green

23

UPR

2.489 - 2.492 (0.0980 - 0.0981)

Green

LWR

2.492 - 2.495 (0.0981 - 0.0982)

Yellow

34

UPR

2.492 - 2.495 (0.0981 - 0.0982)

Yellow

LWR

2.495 - 2.498 (0.0982 - 0.0983)

Blue

45

UPR

2.495 - 2.498 (0.0982 - 0.0983)

Blue

LWR

2.498 - 2.501 (0.0983 - 0.0985)

Pink

56

UPR

2.498 - 2.501 (0.0983 - 0.0985)

Pink

LWR

2.501 - 2.504 (0.0985 - 0.0986)

Purple

67

UPR

2.501 - 2.504 (0.0985 - 0.0986)

Purple

LWR

2.504 - 2.507 (0.0986 - 0.0987)

White

78

UPR

2.504 - 2.507 (0.0986 - 0.0987)

White

LWR

2.507 - 2.510 (0.0987 - 0.0988)

Red

Undersize

Thickness

0.25 (0.0098)

2.618 - 2.626 (0.1031 - 0.1034)

Fillet R 

: 1.5 - 1.7 mm (0.059 - 0.067 in)

PBIC0111E

EM-108

< SERVICE DATA AND SPECIFICATIONS (SDS) 

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Standard and Limit

INFOID:0000000005149018

GENERAL SPECIFICATIONS

DRIVE BELTS

EXHAUST MANIFOLD

Cylinder arrangement

V-8

Displacement cm

3

(in

3

)

5,552 (338.80)

Bore and stroke mm (in)

98 x 92 (3.86 x 3.62)

Valve arrangement

DOHC

Firing order

1-8-7-3-6-5-4-2

Number of piston rings

Compression

2

Oil

1

Number of main bearings

5

Compression ratio

9.8:1

Compression pressure                                
kPa (kg/cm

2

, psi)/rpm

Standard

1,520 (15.5, 220)/200

Minimum

1,324 (13.5, 192)/200

Differential limit between cylinders

98 (1.0, 14)/200

Cylinder number

Valve timing

Unit: degree

a

b

c

d

e

f

244

°

232

°

-8

°

60

°

10

°

54

°

SEM957C

PBIC0187E

Tension of drive belts

Auto adjustment by auto tensioner

SERVICE DATA AND SPECIFICATIONS (SDS)

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Unit: mm (in)

SPARK PLUG

Unit: mm (in)

CAMSHAFT AND CAMSHAFT BEARING

Unit: mm (in)

*: Total indicator reading

Valve Seal

Unit: mm (in)

Valve Lifter

Unit: mm (in)

Valve Clearance

Items

Limit

Surface distortion

Exhaust manifold

0.3 (0.012)

Make

NGK

Model

Standard model

Standard type

DILFR5A-11

Gap (Nominal)

1.1 (0.043)

Items

Standard

Camshaft runout [TIR*]

Less than 0.02 (0.0008)

Camshaft cam height “A”

Intake 

44.865 - 45.055 (1.7663 - 1.7738)

Exhaust

45.075 - 45.265 (1.7746 - 1.7821)

Cam wear limit

0.02 (0.0008)

Outside diameter of camshaft journal

25.950 - 25.970 (1.0217 - 1.0224)

Camshaft bracket inside diameter

26.000 - 26.021 (1.0236 - 1.0244)

Camshaft journal clearance

0.030 - 0.071 (0.0012 - 0.0028)

Camshaft end play

0.115 - 0.188 (0.0045 - 0.0074)

Camshaft dimension "A" for #1 journal

30.500 - 30.548 (1.2008 - 1.2027)

Cylinder head dimension "B" for #1 journal

30.360 - 30.385 (1.1953 - 1.1963)

Camshaft sprocket runout [TIR*]

Less than 0.15 (0.0059)

SEM671

Items

Standard

Height "H" (without valve spring installed)

14.300 - 14.900 (0.5630 - 0.5870)

Items

Standard

Valve lifter diameter

33.977 - 33.987 (1.3377 - 1.3381)

Valve lifter hole diameter

34.000 - 34.016 (1.3386 - 1.3392)

Clearance between lifter and lifter guide

0.013 - 0.039 (0.0005 - 0.0015)