Infiniti Q45. Manual - part 573

CYLINDER BLOCK

EM-109

C

D

E

F

G

H

I

J

K

L

M

A

EM

DRIVE PLATE

●

Check drive plate and signal plate for deformation or cracks.

CAUTION:

●

Do not disassemble drive plate.

●

Do not place drive plate with signal plate facing down.

●

When handling signal plate, take care not to damage or
scratch it. 

●

Handle signal plate in a manner that prevents it from
becoming magnetized.

●

If anything is found, replace drive plate.

PBIC2367E

EM-110

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Standard and Limit

NBS001P5

GENERAL SPECIFICATIONS

DRIVE BELTS

INTAKE MANIFOLD AND EXHAUST MANIFOLD

Unit: mm (in)

Cylinder arrangement

V-8

Displacement

cm

3

  (cu in)

4,494 (274.22)

Bore and stroke

mm (in)

93 x 82.7 (3.66 x 3.256)

Valve arrangement

DOHC

Firing order

1-8-7-3-6-5-4-2

Number of piston rings

Compression

2

engine oil

1

Number of main bearings

5

Compression ratio

10.5

Compression pressure                                  

kPa (kg/cm

2

 , psi)/300 rpm

Standard

1,320 (13.5, 191)

Minimum

1,130 (11.5, 164)

Differential limit 
between cylinders

98 (1.0, 14)

Cylinder number

Valve timing

Unit: degree

a

b

c

d

e

f

228

240

0

60

0

48

SEM957C

PBIC0187E

Tension of drive belts

Auto adjustment by auto tensioner

Item

Limit

Surface distortion

Intake manifold (upper and lower)

0.1 (0.004)

Exhaust manifold

0.3 (0.012)

SERVICE DATA AND SPECIFICATIONS (SDS)

EM-111

C

D

E

F

G

H

I

J

K

L

M

A

EM

SPARK PLUG (PLATINUM-TIPPED TYPE)

VALVE
Valve Dimensions

Unit: mm (in)

Make

NGK

Type

Standard

PLFR5A-11

Hot

PLFR4A-11

Cold

PLFR6A-11

Plug gap (Nominal)

1.1 mm (0.043 in)

Valve head diameter “D”

Intake

36.0 - 36.3 (1.417 - 1.429)

Exhaust

31.2 - 31.5 (1.228 - 1.240)

Valve length “L”

Intake

 96.57 (3.8020)

Exhaust

94.50 (3.720)

Valve stem diameter “d”

Intake

5.972 - 5.980 (0.2351 - 0.2354)

Exhaust

5.962 - 5.970 (0.2347 - 0.2350)

Valve seat angle “

α

”

Intake

45 degrees 15

′

 - 45 degrees 45

′

Exhaust

Valve margin “T”

Intake

1.15 - 1.45 (0.0453 - 0.0571)

Exhaust

1.85 - 2.50 (0.0728 - 0.0846)

SEM188

EM-112

SERVICE DATA AND SPECIFICATIONS (SDS)

Valve Clearance

Unit: mm (in)

*: Approximately 80

°

C (176 

°

F)

Available Shims

Items

Cold

Hot* (reference data)

Intake

0.26 - 0.34 (0.010 - 0.013)

0.304 - 0.416 (0.012 - 0.016)

Exhaust

0.29 - 0.37 (0.011 - 0.015)

0.308 - 0.432 (0.012 - 0.017)

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