1998 NISSAN GT-R Service Manual

SERVICE DATA
SECTION SD
CONTENTS
L ] RB20DE (UB) [I 17 FS5R30A 1-
ENGINE MECHANICAL ............................................... 2 MANUAL TRANSMISSION ........................................... 10
-1 RB25DE /I
ENGINE MECHANICAL .................................................. 4
17 RB25DET I]
ENGINE MECHANICAL .................................................. 6
CLUTCH.. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . . . . .. . . . .+.. . . . . . . . . . -8
71 FS5W71C
MANUAL TRANSMISSION
.................... ......................... 9
AUTOMATIC TRANSMISSION ........................... .......... 12
TRANSFER .............. ......... ..... .. ... ........ . . ............. 18
PROPELLER SHAFT ................................................. 19
FRONT FINAL DRIVE ................................................. 20
REAR FINAL DRIVE ..................................................... 22
DRIVE SHAFT ............................................................... 24
AXLE & SUSPENSION ................................................. 25
ROAD WHEEL AND TIRE ............................................. 27
BRAKE. ... ...... . .. ... . .... . . . . . .... . .. .. . . .. . . .. . . . .. . . .. ... .. .. . . . . . . . . .. .... . -28
STEERING ........... ............. ..... ... ............... ...... ................ 29
SUPER HICAS ............................................................ 30

ENGINE MECHANICAL I RB~ODE (UB) ]
STANDARD AND REPAIR LIMIT
Firing order I 1-5-3-6-2-4
Compression pressure
MPa
(kg/cm2)/rpm
Distortion limit mm
- - -- --- - Ignition advance device
Electronically-controlled ignition advance
Engine
oil capacity
e
Spark plug standard
Limit
. Limit
of variation between cylinders
Intake manifold
Intake manifold collector
Exhaust manifold
Cylinder head
Cvlinder block
lgnition timing (during no feed back control) 1.23
(1 2%)/300
0.93 (9.5)1300
0.1 (1.0)/300
0.1 0.1
0.3
0.2
0.1
Without filter
With filter
MakerlTypeISpark
plug gap mm
Engine idling speed
W'
Idle base speed (during no feed back control)
rPm
Density of
COIHC at idling speed
Wppm Approx.
3.8
Approx. 4.2
NG WPFR5G-11 11.0
- 1
-1
650-.50
(N or P position for
A/T)
600 (N or P position for AlT)
Less than O.l/Less than 50
I New I Used I Limit
Valve
clearance
(INTIEXH)
mm
Deflection
amount of accessory V-belt
Measured with tension gauge
N (kg) Hot
engine
.
Cold engine (at ambient temperature)
Measured by pushing at 98 N (10 kg)
mm 0.36+0.062/0.53+0.062
0.31 1~,0.04/0.50i0.04
Fuel tank capacity
e
Engine coolant total capacity [with reservoir tank (max. level)] e
Thermostat opening temperature [start to open - full open]
"C
Radiator cap opening pressure
MPa (kg/cm2) Approx.
65
Approx. 9.4 82 - 95
0.06
- 0.1 0 (0.6 - 1 .O)
A/C compressor belt
Power
steering pump belt
Fan belt
Power steering pump belt
1 8-10 1 10-12 1 16
667
- 755
(68
- 77)
A/C compressor belt 1 6-8 1 7-9 / 12
Fan belt
1 3-5 1 4-6 1 7.5
559 - 637
(57
- 65)
SEC.117 Power steering
Fan belt pump be1 t
284 (29)

ENGINE MECHANICAL [ RB20DE (UB) 1
TIGHTENING TORQUE
Unit: N.m (kg-m)
Engine cover
Throttle body
Throttle position sensor
IAA unit (ACC valve)
lntake manifold collector
(upper)
Intake manifold collector
Intake manifold
Vacuum tank
Engine coolant temperature
sensor
- --
' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)
Exhaust manifold cover
' Exhaust manifold
Oxygen sensor
Crank pulley
Cam pulley (INT)
Cam pulley
(EXH)
Timing belt cover
Timing belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug
ignition coil
Spark plug
* Rocker cover
Camshaft bracket
Camshaft baffle plate 5.1
- 6.5 (0.52 - 0.66)
20
- 29 (2.0 - 3.0)
1) 5.5 - 7.5 (0.56 - 0.76)
?) 5.5 - 7.5 (0.56 - 0.76)
:Tighten separately in twice.)
Cylinder head bolt
Cylinder head sub bolt
VTC solenoid
' Main bearing cap
Connecting rod nut
Flywheel and drive plate
Engine coolant drain plug
Knock sensor
Radiator mounting bracket
Auxiliary electric fan
Water pump (M6 bolt)
(M8 bolt)
(MI 0 bolt)
Water inlet
Oil pump assembly
Accelerator cable
lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube Front tube to catalytic
converter Catalytic converter to cent
tube Center tube to main
muffler
Alternator (main)
(stay side)
Starter motor Unit:
N-m (kg-m)
1)
29 (3.0)
2) 98 (10.0)
3)
0
(0)
4) 25
- 34 (2.5 - 3.5) GI
5) 95" - 100"
(Angle tightening)
Ec
9.0 - 12 (0.92 - 1.2)
25
- 34 (2.5 - 3.5)
49
- 59 (5.0 - 6.0) h$7'
1) 14 - 16 (1.4 - 1.6)
2) 45"
- 50"
(Angle tightening)
BW
93 - 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5)
25
- 34 (2.5 - 3.5) ST
': Tighten as specified tightening order.
1): Tighten separately in several times.

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT
Firing order
Compression pressure
MPa (kg/cm2)/rpm
-
Intake manifold
Intake manifold collector
--- - Standard Limit
Limit of variation between
cylinders
0.1
0.1
Distortion limit mm
Engine oil capacity
P
Spark plug
Deflection amount of accessory
V-belt Power steering pump
belt
I
- -- - - 1.26 (1 2.8)/300
0.96 (9.8)/300
0.1
(1 .OY300
Measured with tension gauge Exhaust
manifold
Cylinder head
Cylinder block
Without filter
With filter
MakerKype/Spark
plug gap
mrn
I "
650.-50 (N or P position for CVT)
600 (N or P position for AIT)
Less than O.l/Less than 50
15U600
0.36~0.06210.53~0.062
0.31 -.0.04/0.50~0.04
Approx. 65
Approx. 9.4
82 - 95
0.06 - 0.10 (0.6 - 1 .O)
"
Engine idling speed rpm
Idle base speed (during no feed back control)
rpm
Density of
COIHC at idling speed
%/ppm
Ignition timing (during no feed back control)
BTDCO/rpm
I NC compressor err
0.3
0.2
0.1
Approx. 3.8
Approx. 4.2
NGWPFR5G-11/1.0
- 1.1
lanition
advance device
1
Valve clearance (INTIEXH) mm
(kg)
/ Fan belt Electronicallv-controlled
ianition
advance
Hot engine
Cold engine (at ambient temperature)
I power steerina DU~D belt 1 8-10
Fuel tank capacity
Q
Engine
coolant total capacity [with reservoir tank (max. level)] e
Thermostat opening temperature [start to open - full open] OC
Radiator cap opening pressure
MPa (kg/crn2)
,
I Fan belt 1 3-5
Measured
by pushing at 98
N (10 kg)
mm
I SEC.! I7 Power steering I
*I I 1
AK compressor belt 1 6-8
Fan belt pump beit
Used 1 Limit

ENGINE MECHANICAL
TIGHTENING TORQUE
Engine cover
' Throttle body
Throttle position sensor
IAA unit (ACC valve)
' Intake manifold collector
(upper)
' Intake manifold collector
Intake manifold
Vacuum tank
Engine coolant temperature
sensor
' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)
Exhaust manifold cover
Exhaust manifold
Oxygen sensor
Crank pulley
Cam pulley (INT)
Cam pulley
(EXH)
Timing belt cover
Ttming belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug
Ignition coil
Spark plug
Rocker cover
* Camshaft bracket
Camshaft baffle plate Unit:
Nm (kg-m)
5.0
- 6.5 (0.51 - 0.66)
1) 8.8
- 11 (0.9 - 1.1)
2) 18
- 22 (1.8 - 2.2)
2.0
- 2.4 (0.20 - 0.24)
8.4
- 11 (0.86 - 1 .I)
18
- 22 (1.8 - 2.2)
5.1
- 6.5 (0.52 - 0.66)
20
- 29 (2.0 - 3.0)
1) 5.5 - 7.5 (0.56 - 0.76)
2) 5.5 - 7.5 (0.56 - 0.76)
:Tighten separately in twice.)
Cylinder head bolt
Cylinder head sub bolt
VTC solenoid
Main bearing cap
Connecting rod nut
Flywheel and drive plate
Engine coolant drain plug
Knock sensor
Radiator mounting bracket
Auxiliary electric fan
Water pump
(M6 bolt)
(M8 bolt)
(M 1 0 bolt)
Water inlet
Oil pump assembly
-
Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to center
tube Center tube to main
muffler
Alternator (main)
(stay side)
Starter motor Unit:
N.m (kg-m)
1) 29 (3.0)
2) 98 (10.0) 3) 0 (0)
@
4)
25 - 34 (2.5 - 3.5)
5) 95" - 100"
(Angle tightening)
E
9.0 - 12 (0.92 - 1.2)
25
- 34 (2.5 - 3.5) j$? 49 - 59 (5.0 - 6.0)
1) 14- 16
(1.4- 1.6)
2) 60"
- 65" BR
(Angle tightening)
93
- 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5)
25
- 34 (2.5 - 3.5) a=
': Tighten as specified tightening order.
1): Tighten separately in several times.

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT
Distortion limit mm
- - Intake manifold
Intake manifold collector
1 -5-3-6-2-4
1.20 (1
2.2)/300
0.90 (9.2)/300
0.1 (1.0)/300
Firing order
-- - 0.1
0.1
- -- - ( Cylinder block 0.1
Compression
pressure
MPa
(kg/cm2)/rpm
Exhaust manifold
Cvlinder head
Engine oil capacity Standard
Limit
-
Limit of variation between cylinders
0.3
0.2
- - -- - Spark plug I ~akerfl~~e/~~ark plug gap mm r NGKPFRGG-11/1.0 - 1.1
Without
filter
'with
filter
ignition advance device
I Electronically-controlled ignition advance
Approx.
3.9
Aoorox.
4.3
Engine idling speed
rPm
Idle
base speed (during no feed back control)
Pm
650-e50
(N or P position for
A/T)
600 (N or P position for AQ
Density of COIHC at idling speed
Wppm
Ignition timing (during no feed back control)
BTDCO/rpm Less
thanbl~ess than 50
15dY600
Valve clearance
(INT/EXH) mm
Deflection amount of accessory V-belt Hot
engine
Cold engine (at ambient temperature)
Measured
with tension gauge
(kg)
I
SEC.117 Power steering
Fan belt pump belt
0.36+0.062/0.53i0.062
0.3
1 20 .04/0.50a0.04
Fuel tank capacity
4
Engine coolant total capacity [with reservoir tank (max. level)] t
Thermostat opening temperature [start to open - full open]
OC
Radiator cap opening pressure
MPa (kg/cm2)
Power steering pump belt
Measured by pushing at 98
N (1 0 kg)
mm Approx.
65
Approx. 9.4
82
- 95
0.06
- 0.1 0 (0.6 - 1 .O)
New 1 Used 1 Limit
AfC
compressor belt
Fan belt
,
667 - 755
(68
- 77)
Power steering pump belt
' AfC compressor belt
Fan belt
559 - 637 284 (29)
(57 - 65)
667
- 755
(68
- 77)
667
- 755
(68
- 77)
559 - 637 284 (29)
(57 - 65)
559 - 637 284 (29) (57 - 65)
8-
10
6-8
3 - 5
- 10 - 12 16
7-9 12
4
- 6 7.5

ENGINE MECHANICAL pEZBq
TIGHTENING TORQUE
Engine cover
' Throttle body
Throttle position sensor
IAA unit
(ACC valve)
' Intake manifold collector
* Intake manifold
Engine coolant temperature
sensor
' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)
Turbocharger Oil tube
Water tube (block side)
(turbocharger side)
Oxygen sensor
Exhaust manifold cover
' Exhaust manifold
Crank pulley
Cam pulley (INT)
Cam pulley
(EXH)
Timing belt cover
Timing belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug
Ignition coil
Spark plug
' Rocker cover
' Camshaft bracket
Camshaft baffle plate Unit:
N.m (kg-m)
5.0
- 6.5 (0.51 - 0.66)
1)
8.8
- 11 (0.9 - 1.1)
2)
18
- 22 (1 -8 - 2.2)
2.0
- 2.4 (0.20 - 0.24)
8.4
- 11 (0.86 - 1.1)
18
- 22 (1.8 - 2.2)
18
- 22 (1 -8 - 2.2)
20
- 29 (2.0 - 3.0)
5.1
- 6.5 (0.52 - 0.66)
20
- 29 (2.0 - 3.0)
1) 5.5
- 7.5 (0.56 - 0.76)
2) 5.5 - 7.5 (0.56 - 0.76)
(Tighten separately in twice.)
' Cylinder head boit
Cylinder head sub bolt
VTC solenoid
" Main bearing cap
Connecting rod
nut
Oil jet
Flywheel and drive plate
Engine coolant drain plug
Knock sensor
Radiator mounting bracket
Auxiliary electric fan
Water pump (M6 bolt)
(M8 bolt)
(MI
0 bolt)
Water inlet
Oil pump assembly
Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to center
tube
Center tube to main
muffler
Alternator (main)
(stay side)
Starter motor Unit:
N.m (kg-m)
1) 29 (3.0)
2) 98 (10.0)
3) 0 (0)
4) 25 - 34 (2.5 - 3.5)
5) 95"
- 100"
(Angle tightening)
I%
9.0 - 12 (0.92 - 1.2)
25
- 34 (2.5 - 3.5)
49
- 59 (5.0 - 6.0) AT
1) 14 - 16 (1.4 - 1.6)
2) 60" - 65"
(Angle tightening) BR
30 - 40 (3.1 - 4.1)
93
- 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5) ST
25 - 34 (2.5 - 3.5)
3.8
- 4.5 (0.39 - 0.46) I%$
5.1 - 6.5 (0.52 - 0.66)
17
- 21 (1.7 - 2.1)
20
- 23 (2.0 - 2.3) kIA
35 - 47 (3.6 - 4.8)
16
- 21 (1.6 - 2.1)
9.0
- 12 (0.92 - 1.2) a=
': Tighten as specified tightening order.
1): Tighten separately in several times.

CLUTCH
CLUTCH DISC
CLUTCH PEDAL
Engine type I RB20DE I RB25DE I RB25DET
Engine
type
CLUTCH COVER
RB20DE RB25DE
Size mm
Wear
limit (depth to rivet head) mm
Runout limit / diameter at measurement mm
Maximum backlash
at spline mm
Pedal
height mm
Pedal height at clutch released mm
Pedal free play (clevis pin clearance) mm
RB25DET
225 dia. I 240 dia. I 250 dia.
0.3
Engine type
Size mm
TIGHTENING TORQUE
Unit: N-m (ka-m)
172 - 182
Less than 0.7
/ 21 5 dia.
0.9
Diaphragm spring lever height mm
Variation in diaphragm spring lever height mm
Clutch cover fixing bolt More
than 82
RB20DE
225 dia.
Clutch master cylinder fixing bolt
I 7.9 - 10 (0.8 - 1 .I)
Less
than 1.0
/ 230 dia.
33.0
- 35.0
Less than 0.7
9 - 16 (1.0 - 3.0)
More
than 81
Less than 0.7
/ 240 dia.
RB25DE
240 dia. More
than 85
1
.O
RB25DET
250 dia.
37.5
- 39.5
Less than 0.5 48.2
- 50.2
Less than 0.6