Mitsubishi Lancer Evolution 7. Manual — part 156
11B-1
ENGINE
OVERHAUL
CONTENTS
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ALTERNATOR AND IGNITION SYSTEM
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SECONDARY AIR SYSTEM AND INTAKE
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ENGINE OVERHAUL -
General Description
11B-2
GENERAL DESCRIPTION
LIST OF MODELS
Vehicle name
Vehicle model
Engine model
Displacement mL
Specifications
LANCER Evolution VII
CT9A
4G63-7
2000
DOHC 16 valve T/C
SPECIFICATIONS
Items
Specifications
Bore × stroke mm
85 × 88
Total displacement mL
1,997
Combustion chamber shape
Pentroof type
Number of cylinders
4
Valve mechanism
Type
DOHC
Intake valve
2
Exhaust valve
2
Lash adjuster
Hydraulic type
Rocker arm
Roller follower type
Compression ratio
8.8
Fuel injection device
Electronic control MPI
Ignition device type
Electronic control type 2-coil
Alternator type
Alternating current type (IC regulator built in)
Starter motor type
Deceleration drive
ENGINE OVERHAUL -
Specifications
11B-3
SPECIFICATIONS
SERVICE SPECIFICATIONS
Unit: mm
Items
Standard value
Limited value
Timing belt
Timing belt B
Vibration frequency Hz (during inspection)
Vibration frequency Hz (when re-tensing working belt)
Vibration frequency Hz (when mounting new belt)
Deflection amount <reference value> (during inspection)
Deflection amount <reference value> (when re-tensing working belt)
Deflection amount <reference value> (when mounting new belt)
Auto-tensioner
Rod protrusion length (free length)
Rod protrusion length (when mounting timing belt)
Rod recess amount (when pressed at 98 to 196 N•m)
56 - 92
76 - 92
76 - 92
5 - 10
5 - 7
5 - 7
12.0
3.8 - 4.5
Within 1
-
-
-
Rocker arm, camshaft
Camshaft
Cam height
Intake
Exhaust
35.79
35.49
35.29
34.99
Cylinder head, valve
Cylinder head
Lower surface strain
Lower surface grinding limit (in combination with combined cylinder block)
Total height
Valve
Margin
Intake
Exhaust
Total length
Intake
Exhaust
Valve spring
Free height
Squareness
Valve guide
Clearance between valve guide and valve stem
Intake
Exhaust
Total length
Intake
Exhaust
Protrusion amount
Valve seat
Contact width
Valve protrusion amount from spring seat surface
Intake
Exhaust
0.05
-
131.9 - 132.1
1.0
1.5
109.50
109.70
48.3
1.5_ or less
0.02 - 0.05
0.05 - 0.09
45.5
50.5
19.2 - 19.8
0.9 - 1.3
49.20
48.40
0.2
0.2
-
0.5
1.0
109.00
109.20
47.3
4_
0.10
0.15
-
-
-
-
49.70
48.90
ENGINE OVERHAUL -
Specifications
11B-4
Unit: mm
Items
Standard value
Limited value
Oil pump, oil pan
Oil pump
Side clearance
Drive gear
Driven gear
0.08 - 0.14
0.06 - 0.12
-
-
Piston, connecting rod
Piston
Press-in load N
Piston ring
Clearance between ring and ring groove
No. 1 ring
No. 2 ring
Closed gap
No. 1 ring
No. 2 ring
Oil
Connecting rod
Large end thrust clearance
Crankshaft
Pin section oil clearance
7,355 - 17,162
0.03 - 0.07
0.02 - 0.06
0.20 - 0.30
0.35 - 0.50
0.10 - 0.40
0.10 - 0.25
0.03 - 0.05
-
0.1
0.1
0.8
0.8
1.0
0.4
0.1
Crankshaft, cylinder block
Crankshaft
End play
Journal section oil clearance
Cylinder block
Upper surface strain
Upper surface grinding limit (in combination with combined cylinder head)
Cylinder bore
Cylindricity
Clearance between piston and cylinder
0.05 - 0.25
0.03 - 0.04
0.05
-
85.0
0.01 or less
0.02 - 0.04
0.4
0.1
0.1
0.2
-
-
-
Turbocharger
Waste gate actuator operation pressure
100 kPa
-
Alternator
Alternator
Rotor coil resistance Ω
Brush protrusion length
3 - 5
-
-
2
Starter motor
Starter motor
Deviation on commutator periphery
Commutator outer diameter
Undercut depth
0.05
29.4
0.5
0.1
28.8
0.2
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