Nissan Pathfinder (2009 year). Manual — part 399
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
2009 Pathfinder
EM-250
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and Limit
INFOID:0000000003939579
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
2009 Pathfinder
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
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 No. 1 journal
30.500 - 30.548 (1.2008 - 1.2027)
Cylinder head dimension (B) for No. 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)
2009 Pathfinder
EM-252
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*: Approximately 80
°
C (176
°
F)
Available Valve Lifter
Unit: mm (in)
CYLINDER HEAD
Items
Hot*
Cold
Intake
0.304 - 0.416 (0.012 - 0.016)
0.26 - 0.34 (0.010 - 0.013)
Exhaust
0.308 - 0.432 (0.012 - 0.017)
0.29 - 0.37 (0.011 - 0.015)
Identification (stamped) Mark
Thickness
N788
7.88 (0.3102)
N790
7.90 (0.3110)
N792
7.92 (0.3118)
N794
7.94 (0.3126)
N796
7.96 (0.3134)
N798
7.98 (0.3142)
N800
8.00 (0.3150)
N802
8.02 (0.3157)
N804
8.04 (0.3165)
N806
8.06 (0.3173)
N808
8.08 (0.3181)
N810
8.10 (0.3189)
N812
8.12 (0.3197)
N814
8.14 (0.3205)
N816
8.16 (0.3213)
N818
8.18 (0.3220)
N820
8.20 (0.3228)
N822
8.22 (0.3236)
N824
8.24 (0.3244)
N826
8.26 (0.3252)
N828
8.28 (0.3260)
N830
8.30 (0.3268)
N832 8.32
(0.3276)
N834
8.34 (0.3283)
N836
8.36 (0.3291)
SEM758G
2009 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
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Unit: mm (in)
Spark Plug Tube
Unit: mm (in)
Valve Dimensions
Unit: mm (in)
Valve Guide
Items
Standard
Limit
Head surface distortion
0.03 (0.0012)
0.1 (0.004)
Nominal cylinder head height “H”
126.3 (4.97)
KBIA2554E
Items
Standard
Press fit height (H)
38.4 - 39.4 (1.512 - 1.551)
Valve head diameter “D”
Intake
37.0 - 37.3 (1.457 - 1.469)
Exhaust
31.2 - 31.5 (1.228 - 1.240)
Valve length “L”
Intake
96.21- 96.71 (3.7878 - 3.8075)
Exhaust
93.74 - 94.24 (3.6905 - 3.7102)
Valve stem diameter “d”
Intake
5.965 - 5.980 (0.2348 - 0.2354)
Exhaust
5.955 - 5.970 (0.2344 - 0.2350)
Valve seat angle “
α
”
Intake
45
°
15
′
- 45
°
45
′
Exhaust
Valve margin “T”
Intake
1.1 (0.043)
Exhaust
1.3 (0.051)
SEM188
2009 Pathfinder
EM-254
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
Valve Seat
Unit: mm (in)
Valve Spring
CYLINDER BLOCK
Items
Standard
Oversize [0.2 (0.008)] (service)
Valve guide
Outside diameter
10.023 - 10.034 (0.3946 - 0.3950)
10.223 - 10.234 (0.4025 - 0.4029)
Inside diameter (Finished size)
6.000 - 6.018 (0.2362 - 0.2369)
—
Cylinder head valve guide hole diameter
9.975 - 9.996 (0.3927 - 0.3935)
10.175 - 10.196 (0.4006 - 0.4014)
Interference fit of valve guide
0.027 - 0.059 (0.0011 - 0.0023)
Items
Standard
Limit
Stem to guide clearance
Intake
0.020 - 0.053 (0.0008 - 0.0021)
0.08 (0.0031)
Exhaust
0.030 - 0.063 (0.0012 - 0.0025)
0.09 (0.0035)
Projection length “L”
Intake
12.6 - 12.8 (0.496 - 0.504)
Exhaust
12.5 - 12.9 (0.492 - 0.508)
KBIA2555E
Items
Standard
Oversize [0.5 (0.020)] (Service)
Cylinder head seat recess diameter
″
D
″
Intake
38.000 - 38.016 (1.4961 - 1.4967)
38.500 - 38.516 (1.5157 - 1.5164)
Exhaust
32.200 - 32.216 (1.2677 - 1.2683)
32.700 - 32.716 (1.2874 - 1.2880)
Valve seat interference fit
Intake
0.081 - 0.113 (0.0032 - 0.0044)
Exhaust
0.064 - 0.096 (0.0025 - 0.0038)
Valve seat diameter
″
d
″
Intake
38.097 - 38.113 (1.4999 - 1.5005)
38.597 - 38.613 (1.5196 - 1.5202)
Exhaust
32.280 - 32.296 (1.2709 - 1.2715)
32.780 - 32.796 (1.2905 - 1.2912)
KBIA2541E
Free height
mm (in)
50.58 (1.9913)
Pressure
N (kg, lb) at height mm (in)
Installation
165.8 - 187.0 (16.9 - 19.1, 37 - 42) at 37.0 (1.457)
Valve open
314.8 - 355.0 (32.1 - 36.2, 71 - 80) at 28.2 (1.110)
Out-of-square
mm (in)
Less than 2.2 (0.087)
2009 Pathfinder
SERVICE DATA AND SPECIFICATIONS (SDS)
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Unit: mm (in)
PISTON, PISTON RING AND PISTON PIN
Available Piston
Surface flatness
Standard
0.03 (0.0012)
LImit
0.1 (0.004)
Main bearing housing inside diameter
Standard
68.944 - 68.968 (2.7143 - 2.7153)
Cylinder bore diameter
Standard
Grade No. 1
98.000 - 98.010 (3.8583 - 3.8587)
Grade No. 2
98.010 - 98.020 (3.8587 - 3.8590)
Grade No. 3
98.020 - 98.030 (3.8590 - 3.8594)
Wear limit
0.20 (0.0079)
Out-of-round (Difference between
″
X
″
and
″
Y
″
)
Limit
0.015 (0.0006)
Taper (Difference between
″
A
″
and
″
C
″
)
0.010 (0.0004)
Main journal inside diameter grade (Without bearing)
Grade No. A
Grade No. B
Grade No. C
Grade No. D
Grade No. E
Grade No. F
Grade No. G
Grade No. H
Grade No. J
Grade No. K
Grade No. L
Grade No. M
Grade No. N
Grade No. P
Grade No. R
Grade No. S
Grade No. T
Grade No. U
Grade No. V
Grade No. W
Grade No. X
Grade No. Y
Grade No. 4
Grade No. 7
68.944 - 68.945 (2.7143 - 2.7144)
68.945 - 68.946 (2.7144 - 2.7144)
68.946 - 68.947 (2.7144 - 2.7144)
68.947 - 68.948 (2.7144 - 2.7145)
68.948 - 68.949 (2.7145 - 2.7145)
68.949 - 68.950 (2.7145 - 2.7146)
68.950 - 68.951 (2.7146 - 2.7146)
68.951 - 68.952 (2.7146 - 2.7146)
68.952 - 68.953 (2.7146 - 2.7147)
68.953 - 68.954 (2.7147 - 2.7147)
68.954 - 68.955 (2.7147 - 2.7148)
68.955 - 68.956 (2.7148 - 2.7148)
68.956 - 68.957 (2.7148 - 2.7148)
68.957 - 68.958 (2.7148 - 2.7149)
68.958 - 68.959 (2.7149 - 2.7149)
68.959 - 68.960 (2.7149 - 2.7150)
68.960 - 68.961 (2.7150 - 2.7150)
68.961 - 68.962 (2.7150 - 2.7150)
68.962 - 68.963 (2.7150 - 2.7151)
68.963 - 68.964 (2.7151 - 2.7151)
68.964 - 68.965 (2.7151 - 2.7152)
68.965 - 68.966 (2.7152 - 2.7152)
68.966 - 68.967 (2.7152 - 2.7152)
68.967 - 68.968 (2.7152 - 2.7153)
Difference in bore diameter between cylinders
Standard
Less than 0.03 (0.0012)
PBIC0123E
2009 Pathfinder
EM-256
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
Piston Ring
Unit: mm (in)
Piston Pin
Unit: mm (in)
CONNECTING ROD
Unit: mm (in)
Items
Standard
Limit
Piston skirt diameter “A”
Grade No. 1
97.980 - 97.990 (3.8575 - 3.8579)
—
Grade No. 2
97.990 - 98.000 (3.8579 - 3.8583)
—
Grade No. 3
98.000 - 98.010 (3.8583 - 3.8587)
—
“H” dimension
39 (1.54)
—
Piston pin hole diameter
Grade No. 0
21.993 - 21.999 (0.8659 - 0.8661)
—
Piston to cylinder bore clearance
0.010 - 0.030 (0.0004 - 0.0012)
0.08 (0.0031)
PBIC0188E
Items
Standard
Limit
Side clearance
Top
0.035 - 0.085 (0.0014 - 0.0033)
0.11 (0.0043)
2nd
0.030 - 0.070 (0.0012 - 0.0028)
0.10 (0.0039)
Oil ring
0.015 - 0.185 (0.0006 - 0.0073)
—
End gap
Top
0.23 - 0.33 (0.0091 - 0.0130)
0.56 (0.0220)
2nd
0.25 - 0.40 (0.0098 - 0.0157)
0.52 (0.0205)
Oil ring
0.20 - 0.60 (0.0079 - 0.0236)
0.96 (0.0378)
Items
Standard
Piston pin diameter
Grade No. 0
21.989 - 21.995 (0.8657 - 0.8659)
Piston to piston pin clearance
0.002 - 0.006 (0.0001 - 0.0002)
Connecting rod bushing oil clearance
0.005 - 0.017 (0.0002 - 0.0007)
Items
Standard
Limit
Center distance
154.45 - 154.55 (6.08 - 6.08)
—
Bend [per 100 (3.94)]
—
0.15 (0.0059)
Torsion [per 100 (3.94)]
—
0.30 (0.0118)
Connecting rod bushing inside diameter*
(small end)
Grade No. 0
22.000 - 22.006 (0.8661 - 0.8664)
—
Connecting rod big end inside diameter (without bearing)
57.000 - 57.013 (2.2441 - 2.2446)
—
2009 Pathfinder
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