Infiniti I30 (A33). Manual — part 489

Thickness

mm (in)

Identification mark

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

SEM966E

VALVE SPRING

NHEM0032S04

Free height

mm (in)

47.10 (1.8543)

Pressure

N (kg, lb) at height mm (in)

Standard

202 (20.6, 45.4) at 37.0 (1.457)

Limit

436 (44.5, 98.1) at 28.2 (1.110)

Out-of-square

mm (in)

Less than 2.0 (0.079)

VALVE LIFTER

NHEM0032S05

Unit: mm (in)

Valve lifter outer diameter

34.960 - 34.975 (1.3764 - 1.3770)

Lifter guide inner diameter

35.000 - 35.021 (1.3780 - 1.3788)

Clearance between lifter and lifter guide

0.025 - 0.061 (0.0010 - 0.0024)

GI

MA

LC

EC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

SERVICE DATA AND SPECIFICATIONS (SDS)

Valve (Cont’d)

EM-75

VALVE GUIDE

NHEM0032S06

Unit: mm (in)

SEM950E

Standard

Service

Valve guide

Outer diameter

10.023 - 10.034 (0.3946 - 0.3950)

10.223 - 10.234 (0.4025 - 0.4029)

Valve guide

Inner diameter (Finished size)

6.000 - 6.018 (0.2362 - 0.2369)

Cylinder head valve guide hole diameter

9.960 - 9.978 (0.3921 - 0.3928)

10.185 - 10.196 (0.4010 - 0.4014)

Interference fit of valve guide

0.027 - 0.059 (0.0011 - 0.0023)

Standard

Max. tolerance

Stem to guide clearance

Intake

0.020 - 0.053 (0.0008 - 0.0021)

0.08 (0.0031)

Exhaust

0.040 - 0.073 (0.0016 - 0.0029)

0.1 (0.004)

Valve deflection limit

Intake

—

0.24 (0.0094)

Exhaust

—

0.28 (0.0110)

Projection length “L”

12.6 - 12.8 (0.496 - 0.504)

Valve Seat

NHEM0033

Unit: mm (in)

SEM021EA

SERVICE DATA AND SPECIFICATIONS (SDS)

Valve (Cont’d)

EM-76

SEM621F

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)

Height (h)

Intake

5.9 - 6.0 (0.232 - 0.236)

5.05 - 5.15 (0.1988 - 0.2028)

Exhaust

5.9 - 6.0 (0.232 - 0.236)

4.95 - 5.05 (0.1949 - 0.1988)

Depth (H)

5.9 - 6.1 (0.232 - 0.240)

Depth (L)

Intake

41.07 - 41.67 (1.6169 - 1.6405)

Exhaust

41.00 - 41.60 (1.6142 - 1.6378)

Camshaft and Camshaft Bearing

NHEM0034

Unit: mm (in)

Standard

Limit

Camshaft journal to bearing clearance

No. 1

0.045 - 0.086 (0.0018 - 0.0034)

No. 2, 3, 4

0.035 - 0.076 (0.0014 - 0.0030)

0.15 (0.0059)

Inner diameter of camshaft bearing

No. 1

26.000 - 26.021 (1.0236 - 1.0244)

No. 2, 3, 4

23.500 - 23.521 (0.9252 - 0.9260)

—

Outer diameter of camshaft journal

No. 1

25.935 - 25.955 (1.0211 - 1.0218)

No. 2, 3, 4

23.445 - 23.465 (0.9230 - 0.9238)

—

Camshaft runout [TIR*]

Less than 0.02 (0.0008)

0.05 (0.0020)

Camshaft sprocket runout [TIR*]

Less than 0.15 (0.0059)

—

Camshaft end play

0.115 - 0.188 (0.0045 - 0.0074)

0.24 (0.0094)

*: Total indicator reading

GI

MA

LC

EC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

SERVICE DATA AND SPECIFICATIONS (SDS)

Valve Seat (Cont’d)

EM-77

EM671

Cam height “A”

Intake

43.940 - 44.130 (1.7299 - 1.7374)

Exhaust

44.465 - 44.655 (1.7506 - 1.7581)

Wear limit of cam height

0.2 (0.008)

Valve timing

Unit: degree

a

b

c

d

e

f

232

224

3

41

3

49

Cylinder Block

NHEM0035

Unit: mm (in)

SEM022EA

Surface flatness

Standard

Less than 0.03 (0.0012)

Limit

0.10 (0.0039)

Cylinder bore

Inner diameter

Standard

Grade No. 1

93.000 - 93.010 (3.6614 - 3.6618)

Grade No. 2

93.011 - 93.020 (3.6618 - 3.6622)

Grade No. 3

93.021 - 93.030 (3.6622 - 3.6626)

Wear limit

0.20 (0.0079)

Out-of-round (X − Y)

Less than 0.015 (0.0006)

Taper (A − B − C)

Less than 0.015 (0.0006)

SERVICE DATA AND SPECIFICATIONS (SDS)

Camshaft and Camshaft Bearing (Cont’d)

EM-78