Infiniti M45 (Y34). Manual — part 543
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-109
C
D
E
F
G
H
I
J
K
L
M
A
EM
Valve Dimensions
Unit: mm (in)
Valve Guide
Unit: mm (in)
Valve head diameter “D”
Intake
36.0 - 36.3 (1.417 - 1.429)
Exhaust
31.2 - 31.5 (1.228 - 1.240)
Valve length “L”
Intake
96.57 (3.8020)
Exhaust
94.50 (3.720)
Valve stem diameter “d”
Intake
5.972 - 5.980 (0.2351 - 0.2354)
Exhaust
5.962 - 5.970 (0.2347 - 0.2350)
Valve seat angle “
α
”
Intake
45 degrees 15
′
- 45 degrees 45
′
Exhaust
Valve margin “T”
Intake
1.15 - 1.45 (0.0453 - 0.0571)
Exhaust
1.85 - 2.15 (0.0728 - 0.0846)
SEM188
Standard
Service
Valve guide
Outer diameter
10.023 - 10.034 (0.3946 - 0.3950)
10.223 - 10.234 (0.4025 -
0.4029)
Inner 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)
Standard
Limit
Valve guide clearance
Intake
0.020 - 0.046 (0.0008 - 0.0018)
0.08 (0.003)
Exhaust
0.030 - 0.056 (0.0012 - 0.0022)
0.10 (0.004)
Projection length “L”
Intake
10.1 - 10.3 (0.398 - 0.406)
Exhaust
10.0 - 10.4 (0.394 - 0.409)
PBIC0184E
EM-110
SERVICE DATA AND SPECIFICATIONS (SDS)
Valve Seat
Unit: mm (in)
Valve Spring
Standard
Service
Cylinder head seat recess diameter
(D)
Intake
37.000 - 37.016 (1.4567 - 1.4573)
37.500 - 37.516 (1.4764 - 1.4770)
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 outer diameter (d)
Intake
37.097 - 37.113 (1.4605 - 1.4611)
37.597 - 37.613 (1.4802 - 1.4808)
Exhaust
32.280 - 32.296 (1.2709 - 1.2715)
32.780 - 32.796 (1.2905 - 1.2912)
SBIA0380E
Free height
mm (in)
46.35 - 46.85 (1.8247 - 1.8444)
Pressure
N (kg, lb) at height mm (in)
Installation
165 - 189 (16.8 - 19.3,37 - 42) at 33.8 (1.331)
Valve open
290 - 330 (29.6 - 33.7, 65 - 74) at 24.4 (0.961)
Squareness mm
(in)
2.0 (0.079)
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-111
C
D
E
F
G
H
I
J
K
L
M
A
EM
CYLINDER BLOCK
Unit: mm (in)
Surface distortion
Limit
0.1 (0.004)
Cylinder bore
Inner diameter
Standard
Grade No. 1
93.000 - 93.010 (3.6614 - 3.6618)
Grade No. 2
93.010 - 93.020 (3.6618 - 3.6622)
Grade No. 3
93.020 - 93.030 (3.6622 - 3.6626)
Wear limit
0.20 (0.0079)
Out-of-round (Difference between X and Y)
0.015 (0.0006)
Taper (Difference between A and C)
0.010 (0.0004)
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. 1
Grade No. 2
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
inner diameter
between cylinders
Standard
0.03 (0.0012)
PBIC0123E
EM-112
SERVICE DATA AND SPECIFICATIONS (SDS)
PISTON, PISTON RING AND PISTON PIN
Available Piston
Unit: mm (in)
Piston Ring
Unit: mm (in)
Piston Pin
Unit: mm (in)
Piston outer diameter “A”
Standard
Grade No. 1
92.980 - 92.990 (3.6606 - 3.6610)
Grade No. 2
92.990 - 93.000 (3.6610 - 3.6614)
Grade No. 3
93.000 - 93.010 (3.6614 - 3.6618)
0.20 (0.0079) oversize (Service)
93.180 - 93.210 (3.6685 - 3.6697)
“H” dimension
42 (1.65)
Piston pin bore diameter
Grade No. 0
21.993 - 21.999 (0.8659 - 0.8661)
Grade No. 1
21.999 - 22.005 (0.8661 - 0.8663)
Piston to cylinder bore clearance
Standard
0.010 - 0.030 (0.0004 - 0.0012)
Limit
0.08 (0.0031)
PBIC0188E
Standard
Limit
Side clearance
Top
0.045 - 0.080 (0.0018 - 0.0031)
0.11 (0.0043)
2nd
0.030 - 0.070 (0.0012 - 0.0028)
0.10 (0.0039)
Oil ring
0.065 - 0.135 (0.0026 - 0.0053)
—
End gap
Top
0.22 - 0.32 (0.0087 - 0.0126)
0.56 (0.0220)
2nd
0.22 - 0.32 (0.0087 - 0.0126)
0.56 (0.0220)
Oil ring
0.20 - 0.50 (0.0079 - 0.0197)
0.86 (0.0339)
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)
Piston and piston pin clearance
0.002 - 0.006 (0.0001 - 0.0002)
Piston pin to connecting rod bushing oil
clearance
Standard
0.005 - 0.017 (0.0002 - 0.0007)
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