Infiniti I35 (A33). Manual — part 499
![](/vehicles/zatt/ltherawowha/yose/usa.png)
General Specifications
NHEM0056
Cylinder arrangement
V-6
Displacement
cm
3
(cu in)
3,498 (213.45)
Bore and stroke
mm (in)
95.5 x 81.4 (3.760 x 3.205)
Valve arrangement
DOHC
Firing order
1-2-3-4-5-6
Number of piston rings
Compression
2
Oil
1
Number of main bearings
4
Compression ratio
10.3
Compression Pressure
NHEM0057
Unit: kPa (kg/cm
2
, psi)/300 rpm
Compression pressure
Standard
1,275 (13.0, 185)
Minimum
981 (10.0, 142)
Differential limit between cylinders
98 (1.0, 14)
Cylinder number
SEM713A
Cylinder Head
NHEM0058
Unit: mm (in)
Standard
Limit
Head surface distortion
Less than 0.03 (0.0012)
0.1 (0.004)
SEM949E
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
EM-87
![](/vehicles/zatt/ltherawowha/yose/dad.png)
Valve
NHEM0059
VALVE
NHEM0059S01
Unit: mm (in)
SEM188
Valve head diameter “D”
Intake
37.0 - 37.3 (1.4567 - 1.4685)
Exhaust
31.2 - 31.5 (1.228 - 1.240)
Valve length “L”
Intake
96.12 - 96.62 (3.7842 - 3.8039)
Exhaust
93.65 - 94.15 (3.6870 - 3.7067)
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)
Valve margin “T” limit
More than 0.5 (0.020)
Valve stem end surface grinding limit
Less than 0.2 (0.008)
VALVE CLEARANCE
NHEM0059S02
Unit: mm (in)
Cold
Hot* (reference data)
Intake
0.26 - 0.34 (0.010 - 0.013)
0.304 - 0.416 (0.012 - 0.016)
Exhaust
0.29 - 0.37 (0.011 - 0.015)
0.308 - 0.432 (0.012 - 0.017)
*: Approximately 80°C (176°F)
VALVE SPRING
NHEM0059S04
Free height
mm (in)
45.62 (1.7961)
Pressure
N (kg, lb) at height mm (in)
Installation
196 (20.0, 44.1) at 37.0 (1.457)
Valve open
433 (44.2, 97.3) at 27.8 (1.094)
Out-of-square
mm (in)
Less than 2.0 (0.079)
VALVE LIFTER
NHEM0059S05
Unit: mm (in)
Valve lifter outer diameter
33.977 - 33.987 (1.3377 - 1.3381)
Lifter guide inner diameter
34.000 - 34.016 (1.3386 - 1.3392)
Clearance between lifter and lifter guide
0.013 - 0.039 (0.0005 - 0.0015)
SERVICE DATA AND SPECIFICATIONS (SDS)
Valve
EM-88
![](/vehicles/zatt/ltherawowha/yose/mit.png)
Identification mark
Thickness mm (in)
788U or 788R
7.88 (0.3102)
790U or 790R
7.90 (0.3110)
792U or 792R
7.92 (0.3118)
794U or 794R
7.94 (0.3126)
796U or 796R
7.96 (0.3134)
798U or 798R
7.98 (0.3142)
800U or 800R
8.00 (0.3150)
802U or 802R
8.02 (0.3157)
804U or 804R
8.04 (0.3165)
806U or 806R
8.06 (0.3173)
808U or 808R
8.08 (0.3181)
810U or 810R
8.10 (0.3189)
812U or 812R
8.12 (0.3197)
814U or 814R
8.14 (0.3205)
816U or 816R
8.16 (0.3213)
818U or 818R
8.18 (0.3220)
820U or 820R
8.20 (0.3228)
822U or 822R
8.22 (0.3236)
824U or 824R
8.24 (0.3244)
826U or 826R
8.26 (0.3252)
828U or 828R
8.28 (0.3260)
830U or 830R
8.30 (0.3268)
832U or 832R
8.32 (0.3276)
834U or 834R
8.34 (0.3283)
836U or 836R
8.36 (0.3291)
838U or 838R
8.38 (0.3299)
840U or 840R
8.40 (0.3307)
SEM758G
GI
MA
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
Valve (Cont’d)
EM-89
![](/vehicles/zatt/ltherawowha/yose/eres.png)
VALVE GUIDE
NHEM0059S06
Unit: mm (in)
SEM950E
Standard
Service
Valve guide
Outer diameter
10.023 - 10.034 (0.3946 - 0.3950)
10.223 - 10.234 (0.4025 - 0.4029)
Valve guide
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
Max. tolerance
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)
Valve deflection limit
Intake
—
0.24 (0.0094)
Exhaust
—
0.28 (0.0110)
Projection length “L”
12.6 - 12.8 (0.496 - 0.504)
SERVICE DATA AND SPECIFICATIONS (SDS)
Valve (Cont’d)
EM-90
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