1 1ENGINE (4G6) – GENERAL
SECTION 1
ENGINE (4G6)
CONTENTS
General ....................................................1 1
1. Major Specifications ....................................1 1
2. Engine Performance Curve.........................1 2
Base Engine (6 M/T) ...............................1 2
1. Cylinder head gasket...................................1 2
2. Pistons ..........................................................1 3
3. Piston rings (2nd) ........................................1 34. Oil rings ........................................................1 4
5. Counterbalance shaft .................................1 4
6. Camshaft.......................................................1 5
Intake / Exhaust System (6 M/T)............1 6
1. Exhaust system ...........................................1 6
Control system (6 M/T) ...........................1 8
1. Supercharging pressure control ..............1 10
General
The 4G63 T/C engine fitted in the Lancer Evolution VIII MR is basically the same as the 4G63 T/C engine used in the Lancer
Evolution VIII.
The basic structure is the same in both the 6M/T (6 speed) and 5M/T (5 speed) versions, but the following improvements have
been made to the 6M/T version, in order to achieve higher performance.
• Adoption of 5 ply cylinder head gasket
• Addition of V shaped groove in piston , and modified shape in cooling channel
• Reduced oil consumption by increasing tension in piston rings and reducing end to end gap
•Extra durability and reduced oil consumption by using new treatment on outer surface of oil ring side rail, and altering
thickness
•Lighter counterbalance shaft
• Increased output at high engine speeds by modifying intake cams
Major Specifications
Item 6 M/T5M/T
Total Displacement cc1997
Combustion chamberPentroof type
Bore x stroke (mm)85.0 x 88.0
Compression ratio8.8
Camshaft arrangementDOHC 4 valve
FuelPremium unleaded
Max. output (kW/rpm)206/6500
Max. torque (Nm/rpm)400/3500392/3500
Fuel systemElectronic controlled multipoint fuel injection
Ignition systemElectronic controlled two coil
Lash adjusterEquipped
REFERENCE MA
TERIAL – MAIN SPECIFICATIONS / DETAILED SPECIFICATIONS8 4
GH CT9AItem
SNDFZSJDFZSJGFZ
Minimum ground clearance m0.140¨¨
Max. speed (estimated) km/h180¨¨
Fuel consumption km/l (10/15 mode)9.69.7¨
Braking distance m (initial speed in
km/h) È49 (100)
[Vehicle with15 " brakes]
43 (100)
[Vehicle with17" brakes]¨¨
Performance
Min. turning radius m5.9¨¨
Bore x stroke mm85.0 X 88.0¨¨
Compression ratio8.8 (Unleaded
Premium)¨¨
Max. output net [k/W r.p.m.]206 / 6500
(net)¨¨
Max. torque N•m/rpm.392 / 3500
(net)400 / 3500
(net) Ȩ
OpenBTDC 21˚BTDC 17˚
ȨIntake
ClosedABDC 59˚ABCD 63˚
Ȩ
OpenBBDC 58˚¨¨
Engine
Valve or
port timing
Exhaust
ClosedATDC 18˚¨¨
Fuel tank capacity (litres)50¨55
Type and performance of ignition
equipmentElectronic:
20˚~ 45˚¨¨
Type of spark plugsIGR7A,
IGR7A G,S22PR A7,VW22PR DA7¨¨
Battery capacity Ah34 (5), 48 (5)
or 52 (5)¨¨
Electrical
Equipment
Alternator output V A12 – 58, 90,
100 or 105¨¨
Detailed Specifications
These Detailed Specifications are based on submitted data, and may therefore differ from the actual equipment.
The
symbol indicates specifications which have changed from the previous model.
