Infiniti F50. Manual — part 553
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-99
C
D
E
F
G
H
I
J
K
L
M
A
EM
Valve Clearance
Unit: mm (in)
*: Approximately 20
°
C (68
°
F)
Available Shims
Items
Cold* (reference data)
Hot
Intake
0.26 - 0.34 (0.010 - 0.013)
0.32 - 0.40 (0.013 - 0.016)
Exhaust
0.29 - 0.37 (0.011 - 0.015)
0.33 - 0.41 (0.013 - 0.016)
Thickness
mm (in)
Identification mark
2.32 (0.0913)
232
2.33 (0.0917)
233
2.34 (0.0921)
234
2.35 (0.0925)
235
2.36 (0.0929)
236
2.37 (0.0933)
237
2.38 (0.0937)
238
2.39 (0.0941)
239
2.40 (0.0945)
240
2.41 (0.0949)
241
2.42 (0.0953)
242
2.43 (0.0957)
243
2.44 (0.0961)
244
2.45 (0.0965)
245
2.46 (0.0969)
246
2.47 (0.0972)
247
2.48 (0.0976)
248
2.49 (0.0980)
249
2.50 (0.0984)
250
2.51 (0.0988)
251
2.52 (0.0992)
252
2.53 (0.0996)
253
2.54 (0.1000)
254
2.55 (0.1004)
255
2.56 (0.1008)
256
2.57 (0.1012)
257
2.58 (0.1016)
258
2.59 (0.1020)
259
2.60 (0.1024)
260
2.61 (0.1028)
261
2.62 (0.1031)
262
2.63 (0.1035)
263
2.64 (0.1039)
264
2.65 (0.1043)
265
2.66 (0.1047)
266
2.67 (0.1051)
267
2.68 (0.1055)
268
EM-100
SERVICE DATA AND SPECIFICATIONS (SDS)
Valve Spring
Valve Lifter
Unit: mm (in)
2.69 (0.1059)
269
2.70 (0.1063)
270
2.71 (0.1067)
271
2.72 (0.1071)
272
2.73 (0.1075)
273
2.74 (0.1079)
274
2.75 (0.1083)
275
2.76 (0.1087)
276
2.77 (0.1091)
277
2.78 (0.1094)
278
2.79 (0.1098)
279
2.80 (0.1102)
280
2.81 (0.1106)
281
2.82 (0.1110)
282
2.83 (0.1114)
283
2.84 (0.1118)
284
2.85 (0.1122)
285
2.86 (0.1126)
286
2.87 (0.1130)
287
2.88 (0.1134)
288
2.89 (0.1138)
289
2.90 (0.1142)
290
2.91 (0.1146)
291
2.92 (0.1150)
292
2.93 (0.1154)
293
2.94 (0.1157)
294
2.95 (0.1161)
295
Thickness
mm (in)
Identification mark
SEM966E
Free height
mm (in)
46.35 - 46.85 (1.8247 - 1.8444)
Pressure
N (kg, lb) at height mm (in)
Installation
165 - 189 (16.8 - 19.3, 37 - 42) at 33.8 (1.331)
Valve open
290 - 330 (29.6 - 33.7, 65 - 74) at 24.4 (0.961)
Out-of-square
mm (in)
Limit
2.0 (0.079)
Items
Standard
Valve lifter outer diameter
33.965 - 33.975 (1.3372 - 1.3776)
Lifter guide inner diameter
34.000 - 34.016 (1.3386 - 1.3392)
Clearance between lifter and lifter guide
0.025 - 0.051 (0.0010 - 0.0020)
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-101
C
D
E
F
G
H
I
J
K
L
M
A
EM
Valve Guide
Unit: mm (in)
Valve Seat
Unit: mm (in)
Items
Standard
Service
Valve guide
Outer 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)
Standard
Stem to guide clearance
Intake
0.020 - 0.046 (0.0008 - 0.0018)
Exhaust
0.030 - 0.056 (0.0012 - 0.0022)
Projection length “L”
Intake
10.1 - 10.3 (0.398 - 0.406)
Exhaust
10.0 - 10.4 (0.394 - 0.409)
PBIC0184E
Items
Standard
Service
Cylinder head seat recess diameter (D)
Intake
37.000 - 37.016 (1.4567 - 1.4573)
37.500 - 37.516 (1.4764 - 1.4770)
Exhaust
32.200 - 32.216 (1.2677 - 1.2683)
32.700 - 32.716 (1.2874 - 1.2880)
Valve seat interference fit
Intake
0.081 - 0.113 (0.0032 - 0.0044)
Exhaust
0.064 - 0.096 (0.0025 - 0.0038)
Valve seat outer diameter (d)
Intake
37.097 - 37.113 (1.4605 - 1.4611)
37.597 - 37.613 (1.4802 - 1.4808)
Exhaust
32.280 - 32.296 (1.2709 - 1.2715)
32.780 - 32.796 (1.2905 - 1.2912)
SBIA0380E
EM-102
SERVICE DATA AND SPECIFICATIONS (SDS)
CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
*: Total indicator reading
CYLINDER BLOCK
Unit: mm (in)
Items
Standard
Camshaft runout [TIR*]
Less than 0.02 (0.0008)
Cam height “A”
Intake
44.865 - 45.055 (1.7663 - 1.7738)
Exhaust
43.925 - 44.115 (1.7293 - 1.7368)
Outer diameter of camshaft journal
No.1
25.938 - 25.955 (1.0212 - 1.0218)
No.2, 3, 4, 5
25.953 - 25.970 (1.0218 - 1.0224)
Inner diameter of camshaft bracket
26.000 - 26.021 (1.0236 - 1.0244)
Camshaft journal clearance
No.1
0.045 - 0.083 (0.0018 - 0.0033)
No.2, 3, 4, 5
0.030 - 0.068 (0.0012 - 0.0027)
Camshaft end play
0.115 - 0.188 (0.0045 - 0.0074)
Camshaft sprocket runout [TIR*]
Less than 0.15 (0.0059)
SEM671
Surface flatness
Limit
0.1 (0.004)
Cylinder bore
Inner diameter
Standard
Grade No. 1
93.000 - 93.010 (3.6614 - 3.6618)
Grade No. 2
93.010 - 93.020 (3.6618 - 3.6622)
Grade No. 3
93.020 - 93.030 (3.6622 - 3.6626)
Wear limit
0.20 (0.008)
Out-of-round (Difference between X and Y)
Less than 0.015 (0.0006)
Taper (Difference between A and C)
Less than 0.010 (0.0004)
PBIC0123E
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