Mitsubishi Lancer Evolution 7. Manual — part 144

ENGINE

11A

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ENGINE OVERHAUL

11B

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11A-1

ENGINE

CONTENTS

11A-2

ENGINE

CONTENTS

GENERAL INFORMATION

3

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SERVICE SPECIFICATIONS

4

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SEALANTS

4

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SPECIAL TOOLS

5

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ON-VEHICLE SERVICE

7

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Drive Belt Tension Check

7

. . . . . . . . . . . . . . . . . . . . .

Auto-tensioner Check

7

. . . . . . . . . . . . . . . . . . . . . . . . .

Ignition Timing Check

9

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Idle Speed Check

9

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Idle Mixture Check

10

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Compression Pressure Check

11

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Manifold Vacuum Check

12

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Lash Adjuster Check

12

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CRANKSHAFT PULLEY

15

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CAMSHAFT AND CAMSHAFT OIL

SEAL

16

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OIL PAN

23

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CRANKSHAFT OIL SEAL

26

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CYLINDER HEAD GASKET

28

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TIMING BELT AND TIMING BELT B

34

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ENGINE ASSEMBLY

43

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ENGINE <4G6> -

General Information

11A-3

GENERAL INFORMATION

Items

4G63

Total displacement mL

1,997

Bore × Stroke mm

85.0 × 88.0

Compression ratio

8.8

Combustion chamber

Pentroof type

Camshaft arrangement

DOHC

Number of valve

Intake

8

Exhaust

8

Valve timing

Intake

Opening

BTDC 21_

Closing

ABDC 59_

Exhaust

Opening

BBDC 58_

Closing

ATDC 18_

Fuel system

Electronically controlled multipoint fuel injection

Rocker arm

Roller type

Auto-lash adjuster

Equipped

ENGINE -

Service Specifications/Sealants

11A-4

SERVICE SPECIFICATIONS

Items

Standard value

Limit

Drive belt tension

Vibration frequency Hz (Reference)

110 - 144

-

Tension N (Reference)

245 - 412

-

Basic ignition timing

5_BTDC ± 3_

-

Ignition timing

Approximetely

5_BTDC

-

Idle speed r/min

850 ± 100

-

CO contents %

0.1 or less

-

HC contents ppm

100 or less

-

Compression pressure (250 - 400 r/min) kPa

1,128

951

Compression pressure difference of all cylinder kPa

-

Max. 98

Intake manifold vacuum kPa

-

Min. 60

Cylinder head bolt shank length mm

-

99.4

Timing belt B tension

(When checked)

Vibration frequency Hz

52 - 92

-

(When checked)

Deflection mm (Reference)

5 - 10

-

Timing belt B tension

(When adjusted)

Vibration frequency Hz

76 - 92

-

(When adjusted)

Deflection mm (Reference)

5 - 7

-

Timing belt B tension

(When replaced)

Vibration frequency Hz

76 - 92

-

(When replaced)

Deflection mm (Reference)

5 - 7

-

Auto-tensioner rod protrusion amount mm

3.8 - 4.5

-

Auto-tensioner rod sink in amount mm

Within 1

-

SEALANTS

Items

Specified Sealants

Remarks

Rocker cover

MITSUBISHI GENUINE PART MD970389 or

equivalent

Semi-drying

sealant

Rocker cover gasket

equivalent

sealant

Cylinder head

Camshaft position sensor support

Oil pan

Camshaft end seal

3M ATD Part No. 8660 or equivalent