1998 NISSAN GT-R engine

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

MANUAL TRANSMISSION
BACKLASH ADJUSTING SHIMS
Measurement height
mm
--
Items
Main drive gear
1st gear
2nd gear
3rd gear Thickness
mm Standard mm
0.05 - 0.10
0.05
- 0.20
0.05
- 0.20
0.05
- 0.20
Selective parts Parts number
Counter shaft
front bearing
4th gear I -
5th gear 1 0.05 - 0.20 Ail
BAULK RlNG CLEARANCE Reverse idler gear 1 0.05 - 0.20
END PLAY Measurement
position
2nd and 3rd
Inner baulk ring clearance 'an
1 st gear 1 0.31 - 0.41
Items
2nd gear
1 0.11-0.21
Standard
mm
3rd gear 1 0.11 - 0.21
Outer
baulk ring
lnn'er baulk ring
7 4th gear 5th gear
Reverse idler gear
Counter gear Main drive gear end play
Mainshaft high-synchro side
Rear end of mainshaft end bearing
SNAP RlNG
- -
0.24 - 0.41
0.05
- 0.50
0
- 0.16
0
- 0.13
0 - 0.18
0
- 0.14
4th and 5th ( 1.20 - 1.60 1 Less than 0.8
Selective parts
Thickness
mm I Parts number - -- Reverse gear 1 1.10 - 1.55 1 Less than 0.7
Main drive gear
TIGHTENING TORQUE
Unit: N.m (kg-rn)
Counter drive gear
I
TIM side to 40 - 49
Transmission to engine mounting bolt Engine side to 30
- 39
TIM side (3.0 - 4.0) I High-synchro side 32263 V5200 1 32263
"5201
Rear end of shaft I I
Mainshaft 1.1
32228 20 1 00

MANUAL TRANSMISSION pmtq
THRUST WASHER BAULK RING CLEARANCE
Selective parts I Thickness mm I Parts number
Counter gear
(front)
Reverse idler Measurement
position
,
Ist, 2nd and 3rd (double cone)
lnner baulk ring clearance "a*
Outer baulk ring clearance
"bn
3221
8
01
GOO
32218
01G11
3221
8
01G12
32218
01G13
32218
01G14
32218
01G04
32218
01G15
32218
01G16
3221
8 01 GI7
32284
01G10
3228401G11
Outer baulk ring L,
Syncf
cone
4th and 5th
lnner baulk ring
MTA0004D
Reverse gear
Reverse baulk ring
clearance
"cn
Reverse cone
Standard mm Wear
limit
mm
Less than
0.2
Less than
0.2
EC
Less than &$ 0.7
Less than
0.7
--
TIGHTENING TORQUE
Unit: N.m (kg-m)
1 TIM side to 1 40 - 49
Transmission to engine
mounting bolt Engine side to
30 - 39
I T/M side 1 (3.0 - 4.0)

SHIFT SPEED
I
--
Engine type (model code) RB25DE (4AX01) ,
Engine type (model code)
Engine type (model code)
I RB25DET (4AX00)
Throttle position
Full throttle
Half throttle
RB20DE (4AX03)
Vehicle speed km/h
Throttle position Full throttle
Half throttle Shift
pattern
Normal Power
Normal
Power
D,--+D2
46
- 50
46
- 50
31
- 35
43
- 47
Shift pattern
Normal Power
Normal Power
Throttle position
D344
149-159
149
- 159
101
- 109
135
- 143
D23 D3
91 - 99
91
- 99
62
- 68
84
- 90
Full throttle
Half throttle
- -
Vehicle speed km/h
Shift pattern
D4-43
144-154
144
- 154
71
- 79
83
- 91
~,-a
50 - 54
50
- 54
32
- 36
42
- 46
Vehicle speed km/h
I D2-rD3 I D3*D4 I D44D3 I D3*D2 1 D2jD,
Normal
Power
Normal Power
D3+ D2
86 - 94
86
- 94
41
- 45
45
- 51
D2+ D3
101 - 109
101
- 109
61
- 67
85
- 91
45
- 49
45
- 49
31
- 35
39
- 43 D2-4
41
- 45
41
- 45
6-10
6-10
D,-*D,
157 - 167
157
- 167
104
- 112
135
- 143
103
- 111
103
- 111
74
- 80
84
- 90
D,-,D~
151 - 161
151
- 161
80
- 88
87
- 95
167
- 177
167
- 177
111
- 119
133
- 141
D,-* D,
96 - 104
96
- 104
37
- 43
45
- 51
161
- 171
161
- 171
63
- 71
98
- 106
~2~ DI
40 - 44
40
- 44
6- 10
6- 10
98
- 106
98
- 106
32
- 38
50
- 56 40
- 44
40
- 44
6-10
6- 10

AUTOMATIC TRANSMISSION
LOCK-UP SPEED
Engine type (mode
Vehicle speed in
D, position
Vehicle speed in
D, position code)
Lock-up OFF krnh
Lock-up
ON
kmlh
Lock-up OFF kmlh Closed throttle
Half throttle
Closed throttle
Half throttle
Closed throttle Half throttle
Closed throttle Half throttle
--- - Closed throttle: Throttle opening of less than 118 with the closed throttle position switch off position
Half throttle: Throttle opening of 418
STALL SPEED
LINE PRESSURE
Engine type (model code) Stall engine speed rpm
- - -
At idle engine speed I 0.58 - 0.62 (5.9 - 6.3) I 0.47 - 0.51 (4.8 - 5.2)
Engine speed
At stall engine speed
1 1.71 - 1.78 (17.4 - 18.2) 1 1.22 - 1.29 (12.4 - 13.2)
Line pressure MPa (kg/cm2)
R position D, 2, and 1 positions (4AT)
D, 3, and 2 positions (M-AT)

AUTOMATIC TRANSMISSIO
Standard 0.10 - 0.25 Low one-way clutch inner race to seal ring clearance mm
Limit 0.25
OIL PUMP AND LOW ONE-WAY CLUTCH
-
TOTAL END PLAY --
Total end play mm 0.25 - 0.55 I
0.1 5 - 0.22
0.11
- 0.18 Oil pump clearance mm
Thickness mm
Inner gear and outer gear to housing
0.03 - 0.05
Standard 0.1 0 - 0.25 Oil pump cover to seal ring clearance mm , Limit 0.25
Outer
gear to crescendo
Outer gear to housing
I Parts number
Bearing race
REVERSECLUTCHENDPLAY
Reverse clutch drum end play mm 0.55 - 0.90 I
Oil pump thrust washer
ADJUSTMENT OF TANDEM BRAKE BAND TENSION
Number of turns of anchor end pin back-off I 2.375 - 2.625
Anchor end pin tightening torque N.m (kg-m) 4.0 - 5.8
(0.4 - 0.6)
TIGHTENING TORQUE
Unit: N.m (kg-m)
Lock
nut tightening torque N-m
(kg-m)
Transmission to engine mounting bolt
41 - 50 (4.1 - 5.2)
I TIM side to engine side I 40 - 49 (4.0 - 5.0) - - - - - - -- - - - - - -
I Engine side to TIM side I 30 - 39 (3.0 - 4.0)