Page 2009 of 5121
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< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
In grinding crankshaft main journal to use undersize bearings,
keep the fillet R (A) [1.5 - 1.7 mm (0.059 - 0.067 in)].
Bearing undersize
table: Refer to EM-146,
"MainBearing".
JPBIA0216ZZ
Page 2010 of 5121
SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000003802300
GENERAL SPECIFICATIONS
EngineVQ25DE VQ35DE
Cylinder arrangementV- 6
Displacement cm
3 (cu in)2,495 (152.24) 3,498 (213.45)
Bore and stroke mm (in)85.0 x 73.3
(3.346 x 2.886)95.5 x 81.4
(3.760 x 3.205)
Valve arrangementDOHC
Firing order1-2-3-4-5-6
Number of piston ringsCompression 2
Oil 1
Number of main bearings4
Compression ratio9.8 10.3
Compression pressure
kPa (bar, kg/cm
2, psi)/300 rpmStandard 1,275 (12.8, 13.0, 185)
Minimum 981 (9.8, 10.0, 142)
Differential limit between cylinders 98 (1.0, 1.0, 14)
Cylinder number
Valve timing
(Valve timing control - “OFF”)
Unit: degree
ab c d e f
VQ25DE 240 244−658852
VQ35DE 240 260−10 70 10 50
SEM713A
PBIC0187E
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EM-136
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Drive Belt
INFOID:0000000003802301
DRIVE BELT
Spark PlugINFOID:0000000003802302
SPARK PLUG
Unit: mm (in)
Intake Manifold INFOID:0000000003802303
INTAKE MANIFOLD
Unit: mm (in)
Exhaust ManifoldINFOID:0000000003802304
EXHAUST MANIFOLD
Unit: mm (in)
CamshaftINFOID:0000000003802305
CAMSHAFT
Unit: mm (in)
Tension of drive belt Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
MakeDENSO
Standard typeVQ25DE FXE20HR11
VQ35DE FXE22HR11
Gap (Nominal)Standard 1.1 (0.043)
Limit 1.4 (0.055)
Items Limit
Surface distortion Intake manifold 0.1 (0.004)
Items Limit
Surface distortion Exhaust manifold 0.3 (0.012)
ItemsStandard
Limit
VQ25DE VQ35DE
Camshaft journal oil clearanceNo. 1 0.045 - 0.086 (0.0018 - 0.0034)
0.15 (0.0059)
No. 2, 3, 4 0.035 - 0.076 (0.0014 - 0.0030)
Camshaft bracket inner diameterNo. 1 26.000 - 26.021 (1.0236 - 1.0244) —
No. 2, 3, 4 23.500 - 23.521 (0.9252 - 0.9260) —
Camshaft journal diameterNo. 1 25.935 - 25.955 (1.0211 - 1.0218) —
No. 2, 3, 4 23.445 - 23.465 (0.9230 - 0.9238) —
Camshaft end play 0.115 - 0.188 (0.0045 - 0.0074) 0.24 (0.0094)
Camshaft cam height “A”Intake44.665 - 44.855
(1.7585 - 1.7659)45.465 - 45.655
(1.7900 - 1.7974)0.2 (0.008)*
1
Exhaust44.775 - 44.965
(1.7628 - 1.7703)45.475 - 45.665
(1.7904 - 1.7978)0.2 (0.008)*1
Camshaft runout [TIR*2]Less than 0.02 (0.0008) 0.05 (0.0020)
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SERVICE DATA AND SPECIFICATIONS (SDS)
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*1: Cam wear limit
*
2: Total indicator reading
VA LV E L I F T E R
Unit: mm (in)
VALVE CLEARANCE
Unit: mm (in)
*: Approximately 80°C (176°F)
AVAILABLE VALVE LIFTER
VQ25DE
Unit: mm (in)
Camshaft sprocket runout [TIR*2]— 0.15 (0.0059)
SEM671
ItemsStandard
VQ25DE VQ35DE
Valve lifter outer diameterIntake 33.980 - 33.990 (1.3378 - 1.3382)
33.980 - 33.990 (1.3378 - 1.3382)
Exhaust 29.977 - 29.987 (1.1802 - 1.1806)
Valve lifter hole diameterIntake 34.000 - 34.016 (1.3386 - 1.3392)
34.000 - 34.016 (1.3386 - 1.3392)
Exhaust 29.997 - 30.013 (1.1810 - 1.1816)
Valve lifter clearance 0.010 - 0.036 (0.0004 - 0.0014)
Items 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)
Intake Exhaust
Identification (stamped) mark Thickness Identification (stamped) mark Thickness
788P 7.88 (0.3102) 666U 6.66 (0.2622)
790P 7.90 (0.3110) 668U 6.68 (0.2630)
792P 7.92 (0.3118) 670U 6.70 (0.2638)
794P 7.94 (0.3126) 672U 6.72 (0.2646)
796P 7.96 (0.3134) 674U 6.74 (0.2654)
798P 7.98 (0.3142) 676U 6.76 (0.2661)
800P 8.00 (0.3150) 678U 6.78 (0.2669)
802P 8.02 (0.3157) 680U 6.80 (0.2677)
804P 8.04 (0.3165) 682U 6.82 (0.2685)
806P 8.06 (0.3173) 684U 6.84 (0.2693)
808P 8.08 (0.3181) 686U 6.86 (0.2701)
810P 8.10 (0.3189) 688U 6.88 (0.2709)
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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
VQ35DE
Unit: mm (in)
812P 8.12 (0.3197) 690U 6.90 (0.2717)
814P 8.14 (0.3205) 692U 6.92 (0.2724)
816P 8.16 (0.3213) 694U 6.94 (0.2732)
818P 8.18 (0.3220) 696U 6.96 (0.2740)
820P 8.20 (0.3228) 698U 6.98 (0.2748)
822P 8.22 (0.3236) 700U 7.00 (0.2756)
824P 8.24 (0.3244) 702U 7.02 (0.2764)
826P 8.26 (0.3252) 704U 7.04 (0.2772)
828P 8.28 (0.3260) 706U 7.06 (0.2780)
830P 8.30 (0.3268) 708U 7.08 (0.2787)
832P 8.32 (0.3276) 710U 7.10 (0.2795)
834P 8.34 (0.3283) 712U 7.12 (0.2803)
836P 8.36 (0.3291) 714U 7.14 (0.2811)
838P 8.38 (0.3299) 716U 7.16 (0.2819)
840P 8.40 (0.3307) 718U 7.18 (0.2827)Intake Exhaust
Identification (stamped) mark Thickness Identification (stamped) mark Thickness
SEM758G
Identification (stamped) mark Thickness
788P 7.88 (0.3102)
790P 7.90 (0.3110)
792P 7.92 (0.3118)
794P 7.94 (0.3126)
796P 7.96 (0.3134)
798P 7.98 (0.3142)
800P 8.00 (0.3150)
802P 8.02 (0.3157)
804P 8.04 (0.3165)
806P 8.06 (0.3173)
808P 8.08 (0.3181)
810P 8.10 (0.3189)
812P 8.12 (0.3197)
814P 8.14 (0.3205)
816P 8.16 (0.3213)
818P 8.18 (0.3220)
Page 2014 of 5121
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Cylinder HeadINFOID:0000000003802306
CYLINDER HEAD
Unit: mm (in)
VALVE DIMENSIONS
820P 8.20 (0.3228)
822P 8.22 (0.3236)
824P 8.24 (0.3244)
826P 8.26 (0.3252)
828P 8.28 (0.3260)
830P 8.30 (0.3268)
832P 8.32 (0.3276)
834P 8.34 (0.3283)
836P 8.36 (0.3291)
838P 8.38 (0.3299)
840P 8.40 (0.3307) Identification (stamped) mark Thickness
SEM758G
Items Standard Limit
Head surface distortion Less than 0.03 (0.0012) 0.1 (0.004)
Normal cylinder head height “H” 126.3 - 126.5 (4.97 - 4.98) —
PBIC0924E
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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
VA LV E G U I D E
Unit: mm (in)
VALVE SEAT
Engine VQ25DE VQ35DE
Valve head diameter “D”Intake 34.0 - 34.3 (1.339 - 1.350) 36.6 - 36.9 (1.441 - 1.453)
Exhaust 29.0 - 29.3 (1.142 - 1.154) 30.2 - 30.5 (1.189 - 1.201)
Valve length “L”Intake 98.06 (3.8606) 97.13 (3.8240)
Exhaust 96.81 (3.8114) 94.67 (3.7272)
Valve stem diameter “d”Intake 5.965 - 5.980 (0.2348 - 0.2354) 5.965 - 5.980 (0.2348 - 0.2354)
Exhaust 5.955 - 5.970 (0.2344 - 0.2350) 5.962 - 5.970 (0.2347 - 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 0.5 (0.020)
Valve stem end surface grinding limit 0.2 (0.008)
SEM188
Items Standard Oversize (Service) [0.2 (0.008)]
Valve guideOuter 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)
Items Standard Limit
Valve guide clearanceIntake 0.020 - 0.053 (0.0008 - 0.0021) 0.08 (0.0031)
Exhaust 0.030 - 0.056 (0.0012 - 0.0022) 0.09 (0.0035)
Projection length “L” 12.6 - 12.8 (0.496 - 0.504)
SEM950E
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SERVICE DATA AND SPECIFICATIONS (SDS)
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Unit: mm (in)
*1: Diameter made by intersection point of conic angles “α1” and “α2”
*
2: Diameter made by intersection point of conic angles “α2” and “α3”
*
3: Machining data
VQ35DE
Items Standard Oversize (Service) [0.5 (0.020)]
Cylinder head seat recess diameter “D”Intake 35.000 - 35.016 (1.3780 - 1.3786) 35.500 - 35.516 (1.3976 - 1.3983)
Exhaust 30.000 - 30.016 (1.1811 - 1.1817) 30.500 - 30.516 (1.2008 - 1.2014)
Valve seat outer diameter “d”Intake 35.080 - 35.096 (1.3811 - 1.3817) 35.580 - 35.596 (1.4008 - 1.4014)
Exhaust 30.080 - 30.096 (1.1842 - 1.1849) 30.580 - 30.596 (1.2669 - 1.2676)
Valve seat interference fitIntake 0.064 - 0.096 (0.0025 - 0.0038)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Diameter “d1”*
1Intake 35.3 (1.390)
Exhaust 30.3 (1.193)
Diameter “d2”*
2Intake 33.3 - 33.8 (1.311 - 1.331)
Exhaust 28.1 - 28.6 (1.106 - 1.126)
Angle “α1”Intake 60°
Exhaust 60°
Angle “α2”Intake 88°45′ - 90°15′
Exhaust 88°45′ - 90°15′
Angle “α3”Intake 120°
Exhaust 120°
Contacting width “W”*
3Intake 1.0 - 1.4 (0.039 - 0.055)
Exhaust 1.2 - 1.6 (0.047 - 0.063)
Height “h”Intake 6.2 - 6.3 (0.244 - 0.248) 5.4 - 5.5 (0.213 - 0.217)
Exhaust 5.9 - 6.0 (0.232 - 0.236) 4.95 - 5.05 (0.1949 - 0.1988)
Depth “H”Intake 6.35 (0.2500)
Exhaust 6.0 (0.236)
PBIC2745E