Nissan X-Trail 32. Manual — part 1094
HOW TO SELECT PISTON AND BEARING
EM-273
< UNIT DISASSEMBLY AND ASSEMBLY >
[QR25DE]
C
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A
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Bearing undersize table
: Refer to
.
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< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specification
INFOID:0000000010783829
GENERAL SPECIFICATIONS
Unit: degree
Engine type
QR25DE
Cylinder arrangement
In-line 4
Displacement
cm
3
(cu in)
2,488 (151.82)
Bore and stroke
mm (in)
89.0 x 100.0 (3.504 x 3.937)
Valve arrangement
DOHC
Firing order
1-3-4-2
Number of piston rings
Compression
2
Oil
1
Compression ratio
10.0
Compression pressure
kPa (bar, kg/cm
2
, psi)/250 rpm
Standard
1,410 (14.1, 14.4, 204.7)
Minimum
1,220 (12.2, 12.1, 176.3)
Differential limit between cylinders
100 (1.0, 1.0, 14)
Valve timing
: Intake valve
: Exhaust valve
VTC Minimum phasing (Mechanical)
VTC Maximum phasing (Mechanical)
Engine start (Mechanical)
a
EXH valve
opening angle
b
INT valve
opening angle
c
INT open
d
INT close
e
EXH close
f
EXH open
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SERVICE DATA AND SPECIFICATIONS (SDS)
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< SERVICE DATA AND SPECIFICATIONS (SDS)
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*1: When running at idle with engine coolant temperature more than 60
°
C (140
°
F).
*2: When the intake or exhaust valve opening angle is at the maximum.
*3: When starting the engine with engine coolant temperature 60
°
C (140
°
F) or less.
Drive belt
INFOID:0000000010783830
DRIVE BELT
Spark Plug
INFOID:0000000010783831
SPARK PLUG
Unit: mm (in)
Exhaust Manifold
INFOID:0000000010783832
EXHAUST MANIFOLD
Unit: mm (in)
Camshaft
INFOID:0000000010783833
CAMSHAFT
Unit: mm (in)
VTC Minimum phasing
(Mechanical)
*1
224
244
5
ATDC
69
ABDC
3
ATDC
41
BBDC
VTC Maximum phasing
(Mechanical)
*2
35
BTDC
29
ABDC
48
ATDC
4
ABDC
Intermediate lock phasing
(Mechanical)
*3
5
BTDC
59
ABDC
3
ATDC
41
BBDC
Tension of drive belt
Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Make
DENSO
Standard type
FXE20HE11
Spark plug gap (Nominal)
1.1 (0.043)
Items
Limit
Surface distortion
Exhaust manifold
0.3 (0.012)
Items
Standard
Limit
Camshaft journal oil clearance
0.045 - 0.086 (0.0018 - 0.0034)
—
Camshaft bracket inner diameter
No. 1
28.000 - 28.021 (1.1024 - 1.1032)
—
No. 2, 3, 4, 5
23.500 - 23.521 (0.9252 - 0.9260)
—
Camshaft journal diameter
No. 1
27.935 - 27.955 (1.0998 - 1.1006)
—
No. 2, 3, 4, 5
23.435 - 23.455 (0.9226 - 0.9234)
—
SEM671
EM-276
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
*
1
: Cam wear limit
*
2
: Total indicator reading
VALVE LIFTER
Unit: mm (in)
VALVE CLEARANCE
Unit: mm (in)
*: Approximately 80
°
C (176
°
F)
AVAILABLE VALVE LIFTER
Unit: mm (in)
Camshaft end play
0.115 - 0.188 (0.0045 - 0.0074)
—
Camshaft cam height “A”
Intake
45.865 - 46.055 (1.8057 - 1.8132)
0.2 (0.008)*
1
Exhaust
44.175 - 44.365 (1.7392 - 1.7467)
Camshaft runout [TIR*
2
]
Less than 0.02 mm (0.0008)
—
Camshaft sprocket runout [TIR*
2
]
—
0.15 (0.0059)
Items
Standard
Valve lifter outer diameter
CHINA production model
33.977 - 33.987 (1.3377 - 1.3381)
THAILAND production model
33.980 - 33.990 (1.3378 - 1.3382)
Valve lifter hole diameter
34.000 - 34.021 (1.3386 - 1.3394)
Valve lifter clearance
CHINA production model
0.013 - 0.044 (0.0005 - 0.0017)
THAILAND production model
0.010 - 0.041 (0.0004 - 0.0016)
Items
Cold
Hot* (reference data)
Intake
0.24 - 0.32 (0.094 - 0.0126)
0.304 - 0.416 (0.0120 - 0.0164)
Exhaust
0.26 - 0.34 (0.0102 - 0.0134)
0.308 - 0.432 (0.0121 - 0.0170)
Thickness
Identification (stamped)
*
mark
CHINA production model
THAILAND production model
3.00 (0.1181)
300
300N or 300n
3.02 (0.1189)
302
302N or 302n
3.04 (0.1197)
304
304N or 304n
3.06 (0.1205)
306
306N or 306n
3.08 (0.1213)
308
308N or 308n
3.10 (0.1220)
310
310N or 310n
3.12 (0.1228)
312
312N or 312n
3.14 (0.1236)
314
314N or 314n
3.16 (0.1244)
316
316N or 316n
3.18 (0.1252)
318
318N or 318n
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