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3.4L (DOHC) Engine Specifications

3.4L (DOHC) Engine Mechanical Specifications

Application

Millimeters

Inches

General Data
Engine Type

--

60° V-6

Displacement

--

204 Cu In

Liter (VIN)

--

3.4 (X)

RPO

--

LQ1

Bore

92

3.622

Stroke

84

3.307

Deck Height

224

8.818

Compression Ratio

--

9.50:1

Firing Order

--

1-2-3-4-5-6

Oil Pressure @ Operating Temperature

103 kPa @ 1100 RPM

15 psi min @ 1100 RPM

Cylinder Bore
Diameter

92.020-92.038

3.6228-3.6235

Out Of Round Maximum

0.010

0.0004

Taper -- Thrust Side Maximum

0.013

0.00051

Center Distance

111.76

4.4

Piston
Diameter-gauged at skirt 10.44 mm
(0.413 in) below centerline of piston pin bore

91.985-92.000

3.6215-3.6220

Clearance

0.020-0.052

0.0008-0.0020

Pin Bore

23.003-23.010

0.9056-0.9059

Piston Ring
Compression Groove Clearance 1st and 2nd

0.033-0.079

0.0013-0.0031

Gap (at gauge diameter) 1st

0.20-0.45

0.008-0.018

Gap (at gauge diameter) 2nd

0.56-0.81

0.022-0.032

Oil Groove Clearance

0.028-0.206

0.0011-0.0081

Gap (segment at gauge diameter)

0.25-0.76

0.0098-0.0299

Tension 1st

27.6 N

6.2 lbs

Tension 2nd

19.8 N

4.5 lbs

Tension Oil

31.2 N

7.0 lbs

Piston Pin
Diameter

22.9915-22.9964

0.9052-0.9054

Clearance

0.0066-0.0185

0.00026-0.00073

Fit In Rod

0.0165-0.0464

0.0006-0.0018

Crankshaft
Main Journal Diameter-All

67.239-67.257

2.6472-2.6479

Taper-Maximum

0.005

0.0002

Out Of Round-Maximum

0.005

0.0002

Cylinder Block Main Bearing Bore Diameter

72.155-72.168

2.8407-2.8412

Crankshaft Main Bearing Inner Diameter

67.289-67.316

2.6492-2.6502

Main Bearing Clearance

0.019-0.064

0.0008-0.0025

Main Thrust Bearing Clearance

0.032-0.077

0.0013-0.0030

Crankshaft End Play

0.06-0.21

0.002-0.008

Crankpin
Diameter

50.768-50.784

1.9987-1.9994

Taper-Maximum

0.005

0.0002

Out Of Round-Maximum

0.005

0.0002

Rod Bearing Bore Diameter

53.962-53.984

2.124-2.125

Rod Inner Bearing Diameter

50.812-50.850

2.000-2.002

Rod Bearing Clearance

0.018-0.062

0.0007-0.0024

Rod Side Clearance

0.18-0.44

0.0071-0.0173

Camshaft
Lobe Lift (Intake)

9.398 @ 108° Crank ATDC

0.370 @ 108° Crank ATDC

Lobe Lift (Exhaust)

9.389 @ 115° Crank BTDC

0.370 @ 115° Crank BTDC

Timing Reference Set Position with Camshaft
Timing Flats in Clamped Position-Right Bank

--

TDC-1Piston Exhaust Stroke +/- 2° of Crankshaft

Timing Reference Set Position with Camshaft
Timing Flats in Clamped Position-Left Bank

--

TDC-4 Piston Exhaust Stroke +/- 2° of Crankshaft

Journal Diameter

54.973-55.001

2.1643-2.1654

Bore Inside Diameter

55.050-55.075

2.1673-2.1683

Journal Clearance

0.049-0.102

0.0019-0.0040

Valve System
Lifter

--

Hydraulic

Face Angle

--

45°

Seat Angle

--

46°

Seat Runout-Maximum

0.075

0.0030

Seat Width Intake

1.25-1.50

0.0492-0.0591

Exhaust

1.60-1.90

0.063-0.0748

Valve Margin-Minimum

0.75

0.029

Stem Clearance Intake

0.028-0.066

0.0011-0.0026

Stem Clearance Exhaust

0.046-0.084

0.0018-0.0033

Valve Spring
Free Length

42.04

1.6551

Load (Closed)-All

289 N @ 35.56

65 lb @ 1.400

Load (Open)-All

711 N @ 26.16

160 lb @ 1.030

Approximate Number of Active Coils

--

4

Oil Pump
Valve to Bore Clearance

0.038-0.089

0.0015-0.0035

Gear Lash

0.094-0.195

0.0037-0.0077

Gear Pocket Depth

30.53-30.61

1.202-1.205

Diameter

38.202-38.252

1.504-1.506

Gear Length

30.45-30.48

1.199-1.20

Diameter

38.05-38.10

1.498-1.50

Side Clearance

0.08-0.10

0.003-0.004

End Clearance

0.05-0.152

0.002-0.006

3.4L (DOHC) Fastener Tightening Specifications

Application

N·m

Lb Ft

Lb In

Accelerator Control Cable Bracket Bolt

10

--

89

Accelerator Control Cable Bracket Nut

10

--

89

Camshaft Carrier Cover Bolt

11

--

97

Camshaft Carrier Thrust Plate Bolt

10

--

89

Camshaft Carrier Thrust Plate Cover Bolt

10

--

89

Camshaft Drive Belt Cover Bolt

10

--

89

Camshaft Drive Sprocket Bolt

130

96

--

Camshaft Housing Assembly Bolt

27

20

--

Camshaft Position Sensor Bolt

50

37

--

Connecting Rod Cap Nut

20 +75°

15 +75°

--

Coolant By-Pass Nut

25

18

--

Coolant Inlet Housing Bolt

25

18

--

Coolant Outlet Bolt

27

20

--

Coolant Pump Bolt

11

--

97

Coolant Pump Pulley Bolt

25

18

--

Crankshaft Balancer Mounting Bolt

107

79

--

Crankshaft Main Bearing Cap Bolt

50+75°

37+75°

--

Crankshaft Main Bearing Cap Stud

50+75°

37+75°

--

Crankshaft Oil Deflector Nut

25

18

--

Crankshaft Pulley-to-Crankshaft Damper Bolt

60

44

--

Crankshaft Position Sensor Bolt-Front of
Engine

8

--

71

Crankshaft Position Sensor Bolt-Side of Engine

8

--

71

Crankshaft Position Sensor Harness Retaining
Bracket Bolt

5

--

45

Cylinder Head Bolt

60 +90°

44 +90°

--

Drive Belt Tensioner Bolt

50

37

--

EGR Valve Adapter Brace Nut

25

18

--

EGR Valve Adapter Stud

10

--

89

EGR Tube Assembly

25

18

--

EGR Valve Assembly Nut

25

18

--

Electronic Ignition Control Module Assemble
Bolt/Stud

25

18

--

Electronic Ignition Control Assembly Nut

25

18

--

Engine Block Coolant Drain Plug

19

14

--

Engine Block Oil Gallery Plug-Center Rear

16

12

--

Engine Block Oil Gallery Plug-Rear

33

24

--

Engine Block Oil Gallery Plug-Side of Block

19

14

--

Engine Coolant Temperature Sensor

18

13

--

Engine Motor Mount Frame Nut-Engine Left Side

43

32

--

Engine Motor Mount Bracket Nut-Engine Left
Side

43

32

--

Engine Motor Mount Frame Nut-Engine Right Side

43

32

--

Engine Motor Mount Bracket Nut-Engine Right
Side

47

35

--

Engine Motor Mount Bracket -Front of Block
Bolt-Engine Left Side

103

76

--

Engine Motor Mount Bracket-Side of Block
Bolts-Engine Left Side

58

43

--

Engine Motor Mount Bracket-Front of Block
Bolts-Engine Right Side

102

75

--

Engine Motor Mount Bracket-Side of Block
Bolt-Engine Right Side

58

43

--

Engine Motor Mount Bracket-Transaxle
Bolts-Engine Right Side

75

55

--

Engine Mount Strut Bracket Bolt

80

59

--

Engine Oil Cooler Connector

40

30

--

Engine Oil Level Sensor

22

16

--

Evaporator Emission Canister Purge Solenoid
Mounting Bracket Bolt

10

--

89

Exhaust Manifold Crossover Stud

9

--

80

Exhaust Manifold Nut

13

--

116

Exhaust Manifold Stud

17

13

--

Flywheel Bolt

82

60

--

Front Cover Coolant Drain Plug

25

18

--

Front Cover Bolts- Large

47

35

--

Front Cover Bolts - Small

27

20

--

Front Cover-to-Front Engine Lift Hook Bolt

25

18

--

Front Engine Lift Hook-to-Right Camshaft
Carrier Bolt

50

37

--

Front Engine Lift Hook-to-Right Cylinder Head
Bolt (Access through Front Cover)

50

37

--

Fuel Pipe Clip Bolt

7

--

62

Fuel Pipe Retainer Screw

3

--

27

Fuel Rail Assembly Bolt

10

--

89

Ignition Coil Bolt

25

18

--

Ignition Coil Nut

25

18

--

Intermediate Drive Shaft Retainer Screw

10

--

89

Intermediate Shaft Belt Sprocket Bolt

130

96

--

Knock Sensor

21

15

--

Lower Intake Manifold Mounting Bolt

13

--

116

Manifold Absolute Pressure Sensor Bracket Bolt

8

--

71

Oil Cooler Connector

40

30

--

Oil Cooler Hose Fitting

25

18

--

Oil Distribution Cover Bolt

27

20

--

Oil Filter

16

12

--

Oil Filter Fitting

67

49

--

Oil Level Indicator Bolt

10

--

89

Oil Pan Bolt-Except Rear

11

--

97

Oil Pan Bolt-Rear (2)

27

20

--

Oil Pan Drain Plug

25

18

--

Oil Pan Nut

11

--

97

Oil Pan Stud-to-Cylinder Block

10

--

89

Oil Pressure Switch

32

24

--

Oil Pump Cover Bolt

10

--

89

Oil Pump Drive Clamp Bolt

36

27

--

Oil Pump-to-Rear Main Cap Bolt

54

40

--

Power Brake Booster Vacuum Pipe Fitting

18

13

--

Rear Engine Mount Strut Bracket Bolt

82

60

--

Secondary Air Injection Pipe

25

18

--

Secondary Air Injection Pipe Nut-Left Side

25

18

--

Secondary Air Injection Pipe Support Bolt

10

--

89

Secondary Air Injection Pipe Nut-Right Side

10

--

89

Serpentine Drive belt tensioner bolt

50

37

--

Spark Plug

20

15

--

Throttle Body Adapter Bolt

25

18

--

Throttle Body Adapter Nut

25

18

--

Throttle Body Heater Outlet Hose Nipple

18

13

--

Throttle Body Stud

4

--

36

Throttle Body Bolt

10

--

89

Tie Bar Bracket

26

19

--

Timing Belt Cover Bolt

10

--

89

Timing Belt Idler Pulley Bolt

50

37

--

Timing Belt Tensioner Actuator Bracket Bolt

50

37

--

Timing Belt Tensioner Actuator Pulley Pivot
Bolt

50

37

--

Timing Belt Tenisoner Actuator Side Plate Bolt

27

20

--

Timing Chain Tensioner Bolt

27

20

--

Engine Mount Strut and Engine Lift Bracket
Bolt

70

52

--

Upper Intake Manifold Retaining Bolt

26

19

--

Water Inlet Fitting to Front Cover

27

20

--

Vacuum Source Manifold Mounting Bolt

7

--

62


 
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