Infiniti G20 (P11). Manual — part 379
ENGINE MECHANICAL
CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . ...3
Parts Requiring Angular Tightening. . . . . . . .3
Liquid Gasket Application Procedure . . . . . . ..3
PREPARATION . . . . . . . . . . . . . . . ...4
Special Service Tools . . . . . . . . . . . . ..4
Commercial Service Tools . . . . . . . . . . ...6
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING . . . . . . . . . . . . . .8
NVH Troubleshooting - Engine Noise . . . . . . .9
OUTER COMPONENT PARTS . . . . . . . . . .10
Removal and Installation . . . . . . . . . . ...10
MEASUREMENT OF COMPRESSION PRESSURE . 13
OIL PAN. . . . . . . . . . . . . . . . . . .14
Components. . . . . . . . . . . . . . . ...14
Removal. . . . . . . . . . . . . . . . . .14
Installation. . . . . . . . . . . . . . . . ..16
TIMING CHAIN . . . . . . . . . . . . . . . ..19
Components. . . . . . . . . . . . . . . ...19
Removal. . . . . . . . . . . . . . . . . .20
Inspection. . . . . . . . . . . . . . . . ...23
Installation. . . . . . . . . . . . . . . . ..23
OIL SEAL. . . . . . . . . . . . . . . . . ...28
Replacement. . . . . . . . . . . . . . . ..28
. . . . . . . . . . . . . .28
. . . . . . . . . . . . . 28
. . . . . . . . . . . . . ..29
CYLINDER HEAD. . . . . . . . . . . . . . ..30
Components. . . . . . . . . . . . . . . ...30
Removal. . . . . . . . . . . . . . . . . .31
Disassembly. . . . . . . . . . . . . . . ...34
Inspection. . . . . . . . . . . . . . . . ...36
. . . . . . . ...36
. . . . . . . . . 36
. . . . . . . . . . . ..36
. . . . . . . . . ...36
. . . . . . 37
. . . . . . . . . . . 37
. . . . . . ...38
. . . . . . . . . 38
. . . . . . . . 38
. . . . . . . . . . . . . . .39
REPLACING VALVE SEAT FOR SERVICE PARTS
. 40
. . . . . . . . . . . ...41
. . . . . . . . . . . . . ...41
. . . . . . . . 41
ROCKER ARM, SHIM AND ROCKER ARM GUIDE
. .42
Assembly . . . . . . . . . . . . . . . . ...42
Installation. . . . . . . . . . . . . . . . ..46
ENGINE ASSEMBLY. . . . . . . . . . . . . .52
Removal and Installation . . . . . . . . . . ...52
. . . . . . . . . . . . . . . ...53
. . . . . . . . . . . . . . 54
CYLINDER BLOCK . . . . . . . . . . . . . ...55
Components. . . . . . . . . . . . . . . ...55
Removal and Installation . . . . . . . . . . ...56
Disassembly. . . . . . . . . . . . . . . ...56
. . . . . . . . . 56
Inspection. . . . . . . . . . . . . . . . ...56
PISTON AND PISTON PIN CLEARANCE
. . . . ..56
. . . . . . . 57
CONNECTING ROD BEND AND TORSION
. . . ...58
CYLINDER BLOCK DISTORTION AND WEAR
. . ...58
. . . . . . . ..59
. . . . . . . . . . . . . . .60
. . . . . . . . . . ...60
CONNECTING ROD BUSHING CLEARANCE
(SMALL END)
. . . . . . . . . . . . . . ..63
REPLACEMENT OF CONNECTING ROD
BUSHING (SMALL END)
. . . . . . . . . . ..63
REPLACEMENT OF PILOT BUSHING (M/T) OR
PILOT CONVERTER (A/T)
. . . . . . . . . . 63
. . . . . . 64
Assembly . . . . . . . . . . . . . . . . ...64
. . . . . . . . . . . . . . . . ..64
. . . . . . . . . . . . . . .65
SERVICE DATA AND SPECIFICATIONS (SDS) . . .68
General Specifications. . . . . . . . . . . ...68
Compression Pressure . . . . . . . . . . . ..68
Cylinder Head . . . . . . . . . . . . . . . 68
Valve . . . . . . . . . . . . . . . . . . ..69
GI
MA
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
. . . . . . . . . . . . . . . . . 69
. . . . . . . . . . . . . ...69
. . . . . ...69
. . . . . . . . . . . . . . .70
VALVE SHIM CLEARANCE ADJUSTMENT
. . . . 70
. . . . . . . . . . . . . 71
. . . . . . . . . . . . . . ...72
Camshaft and Camshaft Bearing . . . . . . . ..73
Cylinder Block. . . . . . . . . . . . . . . 74
Piston, Piston Ring and Piston pin. . . . . . . 75
. . . . . . . . . . . . . . . . ..75
. . . . . . . . . . . . . . .75
. . . . . . . . . . . . . . . 75
Connecting Rod . . . . . . . . . . . . . . .76
Crankshaft. . . . . . . . . . . . . . . . ..77
Main Bearing. . . . . . . . . . . . . . . ..78
. . . . . . . . . . . . . . . .78
. . . . . . . . . . . . . . . 78
Connecting Rod Bearing . . . . . . . . . . ...78
. . . . . . . . . . . . . 78
. . . . . . . . . . . . . . . 78
Bearing Clearance . . . . . . . . . . . . . .79
Miscellaneous Components. . . . . . . . . ...79
CONTENTS
(Cont’d)
EM-2
Parts Requiring Angular Tightening
NCEM0001
I
Use an angle wrench for the final tightening of the following
engine parts:
a)
Cylinder head bolts
b)
Main bearing cap bolts
c)
Connecting rod cap nuts
I
Do not use a torque value for final tightening.
I
The torque value for these parts are for a preliminary step.
I
Ensure thread and seat surfaces are clean and coated with
engine oil.
SEM164F
AEM080
Liquid Gasket Application Procedure
NCEM0002
1.
Use a scraper to remove old liquid gasket from mating
surfaces and grooves. Also, completely clean any oil from
these areas.
2.
Apply a continuous bead of liquid gasket to mating sur-
faces. (Use Genuine RTV silicone sealant part No. 999MP-
A7007 or equivalent.)
I
For oil pan, be sure liquid gasket diameter is 4.0 to 5.0 mm
(0.157 to 0.197 in).
I
For areas except oil pan, be sure liquid gasket diameter is
2.0 to 3.0 mm (0.079 to 0.118 in).
3.
Apply liquid gasket around the inner side of bolt holes
(unless otherwise specified).
4.
Assembly should be done within 5 minutes after coating.
5.
Wait at least 30 minutes before refilling engine oil and
engine coolant.
GI
MA
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
PRECAUTIONS
Parts Requiring Angular Tightening
EM-3
Special Service Tools
NCEM0003
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
ST0501S000
(
—
)
Engine stand assembly
1 ST05011000
(
—
)
Engine stand
2 ST05012000
(
—
)
Base
NT042
Disassembling and assembling
KV10106500
(
—
)
Engine stand shaft
NT028
KV10115300
(
—
)
Engine sub-attachment
NT008
ST10120000
(J24239-01)
Cylinder head bolt
wrench
NT583
Loosening and tightening cylinder head bolt
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)
KV10116200
(J26336-B)
Valve spring compres-
sor
1 KV10115900
(J26336-20)
Attachment
NT022
Disassembling valve mechanism
KV10115600
(J38958)
Valve oil seal drift
NT024
Installing valve oil seal
KV10107902
(J38959)
Valve oil seal puller
NT011
Displacement valve lip seal
PREPARATION
Special Service Tools
EM-4
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