Infiniti I30 (A33). Manual — part 490
Main journal inner
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
63.993 - 63.994 (2.5194 - 2.5194)
63.994 - 63.995 (2.5194 - 2.5195)
63.995 - 63.996 (2.5195 - 2.5195)
63.996 - 63.997 (2.5195 - 2.5196)
63.997 - 63.998 (2.5196 - 2.5196)
63.998 - 63.999 (2.5196 - 2.5196)
63.999 - 64.000 (2.5196 - 2.5197)
64.000 - 64.001 (2.5197 - 2.5197)
64.001 - 64.002 (2.5197 - 2.5198)
64.002 - 64.003 (2.5198 - 2.5198)
64.003 - 64.004 (2.5198 - 2.5198)
64.004 - 64.005 (2.5198 - 2.5199)
64.005 - 64.006 (2.5199 - 2.5199)
64.006 - 64.007 (2.5199 - 2.5200)
64.007 - 64.008 (2.5200 - 2.5200)
64.008 - 64.009 (2.5200 - 2.5200)
64.009 - 64.010 (2.5200 - 2.5201)
64.010 - 64.011 (2.5201 - 2.5201)
64.011 - 64.012 (2.5201 - 2.5202)
64.012 - 64.013 (2.5202 - 2.5202)
64.013 - 64.014 (2.5202 - 2.5202)
64.014 - 64.015 (2.5202 - 2.5203)
64.015 - 64.016 (2.5203 - 2.5203)
64.016 - 64.017 (2.5203 - 2.5203)
Difference in inner
diameter between
cylinders
Standard
Less than 0.03 (0.0012)
Piston, Piston Ring and Piston Pin
NHEM0036
AVAILABLE PISTON
NHEM0036S01
Unit: mm (in)
SEM882E
Piston skirt diameter “A”
Standard
Grade No. 1
92.979 - 92.988 (3.6606 - 3.6609)
Grade No. 2
92.988 - 93.000 (3.6609 - 3.6614)
Grade No. 3
93.000 - 93.009 (3.6614 - 3.6618)
0.20 (0.0079) oversize (Service)
93.179 - 93.209 (3.6685 - 3.6696)
“a” dimension
45.4 (1.787)
Piston pin hole diameter
Grade No. 0
21.993 - 21.999 (0.8659 - 0.8661)
Grade No. 1
21.999 - 22.005 (0.8661 - 0.8663)
Piston clearance to cylinder block
0.010 - 0.032 (0.0004 - 0.0013)
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
Cylinder Block (Cont’d)
EM-79
PISTON RING
=NHEM0036S02
Unit: mm (in)
Standard
Limit
Side clearance
Top
0.040 - 0.080 (0.0016 - 0.0031)
0.11 (0.0043)
2nd
0.030 - 0.070 (0.0012 - 0.0028)
0.1 (0.004)
Oil ring
0.015 - 0.185 (0.0006 - 0.0073)
—
End gap
Top
0.22 - 0.32 (0.0087 - 0.0126)
0.55 (0.0217)
2nd
0.32 - 0.47 (0.0126 - 0.0185)
0.85 (0.0335)
Oil (rail ring)
0.20 - 0.60 (0.0079 - 0.0236)
0.95 (0.0374)
PISTON PIN
NHEM0036S03
Unit: mm (in)
Piston pin outer diameter
Grade No. 0
21.989 - 21.995 (0.8657 - 0.8659)
Grade No. 1
21.995 - 22.001 (0.8659 - 0.8662)
Interference fit of piston pin to piston
0.002 - 0.006 (0.0001 - 0.0002)
Piston pin to connecting rod bushing clearance
Standard
0.005 - 0.017 (0.0002 - 0.0007)
Limit
0.030 (0.0012)
*: Values measured at ambient temperature of 20°C (68°F)
Connecting Rod
NHEM0037
Unit: mm (in)
Center distance
147.60 - 147.70 (5.8110 - 5.8149)
Bend [per 100 (3.94)]
Limit
0.15 (0.0059)
Torsion [per 100 (3.94)]
Limit
0.30 (0.0118)
Connecting rod small end inner diameter
23.980 - 24.000 (0.9441 - 0.9449)
Piston pin bushing inner diameter*
Grade No. 0
22.000 - 22.006 (0.8661 - 0.8664)
Grade No. 1
22.006 - 22.012 (0.8664 - 0.8666)
Connecting rod big end inner diameter
48.000 - 48.013 (1.8898 - 1.8903)
Side clearance
Standard
0.20 - 0.35 (0.0079 - 0.0138)
Limit
0.40 (0.0157)
*: After installing in connecting rod
SERVICE DATA AND SPECIFICATIONS (SDS)
Piston, Piston Ring and Piston Pin (Cont’d)
EM-80
Crankshaft
NHEM0038
Unit: mm (in)
Main journal dia. “Dm” grade
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
59.975 - 59.974 (2.3612 - 2.3612)
59.974 - 59.973 (2.3612 - 2.3611)
59.973 - 59.972 (2.3611 - 2.3611)
59.972 - 59.971 (2.3611 - 2.3611)
59.971 - 59.970 (2.3611 - 2.3610)
59.970 - 59.969 (2.3610 - 2.3610)
59.969 - 59.968 (2.3610 - 2.3609)
59.968 - 59.967 (2.3609 - 2.3609)
59.967 - 59.966 (2.3609 - 2.3609)
59.966 - 59.965 (2.3609 - 2.3608)
59.965 - 59.964 (2.3608 - 2.3608)
59.964 - 59.963 (2.3608 - 2.3607)
59.963 - 59.962 (2.3607 - 2.3607)
59.962 - 59.961 (2.3607 - 2.3607)
59.961 - 59.960 (2.3607 - 2.3606)
59.960 - 59.959 (2.3606 - 2.3606)
59.959 - 59.958 (2.3606 - 2.3605)
59.958 - 59.957 (2.3605 - 2.3605)
59.957 - 59.956 (2.3605 - 2.3605)
59.956 - 59.955 (2.3605 - 2.3604)
59.955 - 59.954 (2.3604 - 2.3604)
59.954 - 59.953 (2.3604 - 2.3603)
59.953 - 59.952 (2.3603 - 2.3603)
59.952 - 59.951 (2.3603 - 2.3603)
Pin journal dia. “Dp”
Grade No. 0
44.968 - 44.974 (1.7704 - 1.7706)
Grade No. 1
44.962 - 44.968 (1.7702 - 1.7704)
Grade No. 2
44.956 - 44.962 (1.7699 - 1.7702)
Center distance “r”
36.61 - 36.69 (1.4413 - 1.4445)
Out-of-round (X − Y)
Standard
Less than 0.002 (0.0001)
Taper (A − B)
Standard
Less than 0.002 (0.0001)
Runout [TIR*]
Limit
Less than 0.10 (0.0039)
Free end play
Standard
0.10 - 0.25 (0.0039 - 0.0098)
Limit
0.30 (0.0118)
SEM645
EM715
*: Total indicator reading
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
Crankshaft
EM-81
Available Main Bearing
NHEM0039
SEM175F
Grade number
Thickness “T”
mm (in)
Width “W”
mm (in)
Identification color
(UPR/LWR)
Remarks
0
2.000 - 2.003 (0.0787 - 0.0789)
19.9 - 20.1
(0.783 - 0.791)
Black
Grade is the same for
upper and lower bearings.
1
2.003 - 2.006 (0.0789 - 0.0790)
Brown
2
2.006 - 2.009 (0.0790 - 0.0791)
Green
3
2.009 - 2.012 (0.0791 - 0.0792)
Yellow
4
2.012 - 2.015 (0.0792 - 0.0793)
Blue
5
2.015 - 2.018 (0.0793 - 0.0794)
Pink
6
2.018 - 2.021 (0.0794 - 0.0796)
Purple
7
2.021 - 2.024 (0.0796 - 0.0797)
White
01
UPP
2.003 - 2.006 (0.0789 - 0.0790)
Brown/Black
Grade is different for upper
and lower bearings.
LWR
2.000 - 2.003 (0.0787 - 0.0789)
12
UPR
2.006 - 2.009 (0.0790 - 0.0791)
Green/Brown
LWR
2.003 - 2.006 (0.0789 - 0.0790)
23
UPR
2.009 - 2.012 (0.0791 - 0.0792)
Yellow/Green
LWR
2.006 - 2.009 (0.0790 - 0.0791)
34
UPR
2.012 - 2.015 (0.0792 - 0.0793)
Blue/Yellow
LWR
2.009 - 2.012 (0.0791 - 0.0792)
45
UPR
2.015 - 2.018 (0.0793 - 0.0794)
Pink/Blue
LWR
2.012 - 2.015 (0.0792 - 0.0793)
56
UPR
2.018 - 2.021 (0.0794 - 0.0796)
Purple/Pink
LWR
2.015 - 2.018 (0.0793 - 0.0794)
67
UPR
2.021 - 2.024 (0.0796 - 0.0797)
White/Purple
LWR
2.018 - 2.021 (0.0794 - 0.0796)
UNDERSIZE
NHEM0039S01
Unit: mm (in)
Thickness
Main journal diameter “Dm”
0.25 (0.0098)
2.132 - 2.140 (0.0839 - 0.0843)
Grind so that bearing clearance is the specified
value.
SERVICE DATA AND SPECIFICATIONS (SDS)
Available Main Bearing
EM-82
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