Nissan Primera P11. Manual — part 430
Valve
NCEM0031
VALVE
NCEM0031S01
Unit: mm (in)
SEM188A
T (Margin thickness)
Valve head diameter “D”
Intake
29.9 - 30.2 (1.177 - 1.189)
Exhaust
24.9 - 25.2 (0.980 - 0.992)
Valve length “L”
Intake
92.00 - 92.50 (3.6220 - 3.6417)
Exhaust
92.37 - 92.87 (3.6366 - 3.6563)
Valve stem diameter “d”
Intake
5.465 - 5.480 (0.2152 - 0.2157)
Exhaust
5.445 - 5.460 (0.2144 - 0.2150)
Valve face angle “
α
”
45°15
′
- 45°45
′
Valve margin “T” limit
More than 0.5 (0.020)
Valve stem end surface grinding limit
0.2 (0.008)
VALVE SPRING
NCEM0031S02
Free height
mm (in)
40.0 (1.575)
Pressure N (kg, lb) at height mm (in)
Standard
370.0 (37.73, 83.19) at 23.64 (0.9307)
Limit
347.8 (35.46, 78.19) at 23.64 (0.9307)
Out-of-square mm (in)
Less than 1.75 (0.0689)
VALVE LIFTER
NCEM0031S10
Unit: mm (in)
Valve lifter outside diameter
29.960 - 29.975 (1.1795 - 1.1801)
Lifter guide inside diameter
30.000 - 30.021 (1.1811 - 1.1819)
Clearance between valve lifter and valve lifter guide
0.025 - 0.061 (0.0010 - 0.0024)
VALVE CLEARANCE
NCEM0031S11
Unit: mm (in)
For adjusting
For checking
Hot
Cold* (reference data)
Hot
Intake
0.32 - 0.40 (0.013 - 0.016)
0.25 - 0.33 (0.010 - 0.013)
0.21 - 0.49 (0.008 - 0.019)
Exhaust
0.37 - 0.45 (0.015 - 0.018)
0.32 - 0.40 (0.013 - 0.016)
0.30 - 0.58 (0.012 - 0.023)
*: At a temperature of approximately 20°C (68°F)
Whenever valve clearances are adjusted to cold specifications, check that the clearances satisfy hot specifications and adjust
again if necessary.
SERVICE DATA AND SPECIFICATIONS (SDS)
QG
Valve
EM-179
VALVE GUIDE
NCEM0031S04
Unit: mm (in)
MEM096A
Intake
Exhaust
Standard
Service
Standard
Service
Valve guide
Outer diameter
9.523 - 9.534 (0.3749
- 0.3754)
9.723 - 9.734 (0.3828
- 0.3832)
9.523 - 9.534 (0.3749
- 0.3754)
9.723 - 9.734 (0.3828
- 0.3832)
Inner diameter
[Finished size]
5.500 - 5.515 (0.2165 - 0.2171)
5.500 - 5.515 (0.2165 - 0.2171)
Cylinder head valve guide hole diameter
9.475 - 9.496 (0.3730
- 0.3739)
9.685 - 9.696 (0.3813
- 0.3817)
9.475 - 9.496 (0.3730
- 0.3739)
9.685 - 9.696 (0.3813
- 0.3817)
Interference fit of valve guide
0.027 - 0.059 (0.0011 -
0.0023)
0.027 - 0.049 (0.0011 -
0.0019)
0.027 - 0.059 (0.0011 -
0.0023)
0.027 - 0.049 (0.0011 -
0.0019)
Stem to guide clearance
0.020 - 0.050 (0.0008 - 0.0020)
0.040 - 0.070 (0.0016 - 0.0028)
Valve deflection limit (Dial gauge reading)
0.2 (0.008)
Projection length “L”
11.5 - 11.7 (0.453 - 0.461)
AVAILABLE SHIMS
NCEM0031S07
Thickness mm (in)
Identification mark
2.00 (0.0787)
2.00
2.02 (0.0795)
2.02
2.04 (0.0803)
2.04
2.06 (0.0811)
2.06
2.08 (0.0819)
2.08
2.10 (0.0827)
2.10
2.12 (0.0835)
2.12
2.14 (0.0843)
2.14
2.16 (0.0850)
2.16
2.18 (0.0858)
2.18
2.20 (0.0866)
2.20
2.22 (0.0874)
2.22
2.24 (0.0882)
2.24
2.26 (0.0890)
2.26
2.28 (0.0898)
2.28
2.30 (0.0906)
2.30
2.32 (0.0913)
2.32
SERVICE DATA AND SPECIFICATIONS (SDS)
QG
Valve (Cont’d)
EM-180
Thickness mm (in)
Identification mark
2.34 (0.0921)
2.34
2.36 (0.0929)
2.36
2.38 (0.0937)
2.38
2.40 (0.0945)
2.40
2.42 (0.0953)
2.42
2.44 (0.0961)
2.44
2.46 (0.0969)
2.46
2.48 (0.0976)
2.48
2.50 (0.0984)
2.50
2.52 (0.0992)
2.52
2.54 (0.1000)
2.54
2.56 (0.1008)
2.56
2.58 (0.1016)
2.58
2.60 (0.1024)
2.60
2.62 (0.1031)
2.62
2.64 (0.1039)
2.64
2.66 (0.1047)
2.66
2.68 (0.1055)
2.68
2.70 (0.1063)
2.70
2.72 (0.1071)
2.72
2.74 (0.1079)
2.74
2.76 (0.1087)
2.76
2.78 (0.1094)
2.78
2.80 (0.1102)
2.80
2.82 (0.1110)
2.82
2.84 (0.1118)
2.84
2.86 (0.1126)
2.86
2.88 (0.1134)
2.88
2.90 (0.1142)
2.90
2.92 (0.1150)
2.92
2.94 (0.1157)
2.94
2.96 (0.1165)
2.96
2.98 (0.1173)
2.98
SERVICE DATA AND SPECIFICATIONS (SDS)
QG
Valve (Cont’d)
EM-181
VALVE SEAT
NCEM0031S05
Unit: mm (in)
AEM236
Shim
Indicate
T
1
= 2.800 mm
(0.1102 in)
SEM573DA
SEM574DA
Dia.
QG
Dia.
QG
A
27.8 - 28.0 (1.094 - 1.102) dia.
E
24.5 - 24.7 (0.965 - 0.972)
B
29.5 - 29.7 (1.161 - 1.169) dia.
F
26.2 - 26.4 (1.031 - 1.039)
C
31.9 - 32.1 (1.256 - 1.264)
G
26.500 - 26.516 (1.0433 - 1.0439)
D
31.500 - 31.516 (1.2402 - 1.2408)
INTAKE
Standard
1.06 - 1.34
(0.0417 - 0.0528)
5.9 (0.232)
Oversize
1.06 - 1.34
(0.0417 - 0.0528)
5.9 (0.232)
Cylinder head machining data
EXHAUST
Standard
1.20 - 1.68
(0.0472 - 0.0661)
5.65 (0.2224)
Oversize
1.20 - 1.68
(0.0472 - 0.0661)
5.65 (0.2224)
Cylinder head machining data
SERVICE DATA AND SPECIFICATIONS (SDS)
QG
Valve (Cont’d)
EM-182
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