2007 MITSUBISHI LANCER EVOLUTION engine

ENGINE COOLING -ThermostatENGINE COOLING -Thermostat14-11
THERMOSTAT
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Supplying (Refer to P.14-6.)
DAir Duct Assembly Removal and Installation (Refer to GROUP 15 - Air Cleaner.)
DVacuum Pipe, Secondary Air Pipe Assembly Removal and Installation
(Refer to GROUP 15 - Secondary Air Supply System.)
1
2
3
10±1 N·m
Removal steps
AA""BA1. Radiator upper hose connection
2. Water outlet fitting
"AA3. Thermostat
REMOVAL SERVICE POINT
AA"RADIATOR UPPER HOSE DISCONNECTION
After making mating marks on the radiator hose and the hose
clamp,disconnect the radiator hose.

ENGINE COOLING -Thermostat14-12
INSTALLATION SERVICE POINTS
"AATHERMOSTAT INSTALLATION
Install the thermostat being careful not to fold over or scratch
the rubber ring.
Caution
Make absolutely sure that no oil is adhering to the rubber
ring of the thermostat. In addition, be careful not to fold
over or scratch the rubber ring when inserting. If the
rubber ring is damage, replace the thermostat.
"BARADIATOR UPPER HOSE CONNECTION
1. Insert each hose as far as the projection of the water
outlet fitting.
2. Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
INSPECTION
THERMOSTAT CHECK
1. Immerse the thermostat in water, and heat the water while
stirring. Check the thermostat valve opening temperature.
Standard value:
Valve opening temperature: 80±1.5_C
2. Check that the amount of valve lift is at the standard value
when the water is at the full-opening temperature.
Standard value:
Full-opening temperature: 93_C
Amount of valve lift: 9.5 mm or more
NOTE
Measure the valve height when the thermostat is fully
closed, and use this measurement to calculate the valve
height when the thermostat is fully open.
Valve lift

ENGINE COOLING -Water Pump14-13
WATER PUMP
Caution
If the vehicle is equipped with the Brembo disc brake, during maintenance, take care not to contact
the parts or tools to the caliper because the paint of caliper will be scratched.
REMOVAL AND INSTALLATION
Pre-remobal and Post-installation Operation
DEngine Coolant Draining and Supplying (Refer to P.14-6.)
DTiming Belt Removal and installation (Refer to GROUP 11A.)
1
Bolt specifications
28×22
2
23±3 N·m
14±1 N·m
Nominal diameter×Nominal length mm
8×70
8×14
8×22 8×25
3 4
22±4 N·m
Removal steps
1. Alternator brace
2. Water pump
3. Water pump Gasket
"AA4. O-ring
INSTALLATION SERVICE POINT
"AAO-RING INSTALLATION
Fit an O-ring into the O-ring groove located at the end of
the water inlet pipe and apply water to the O-ring or the
inside of the mounting surface of the water pump for insertion.
CAUTION
Do not let the O-ring get contaminated with grease, such
as engine oil.Water pump
O-ring
Water inlet pipe

ENGINE COOLING -Water Hose and Water Pipe14-14
WATER HOSE AND WATER PIPE
REMOVAL AND INSTALLATION
Pre-remobal and Post-installation Operation
DEngine Coolant Draining and Supplying (Refer to P.14-6.)
DAir Cleaner Assembly Removal and Installation (Refer to GROUP 15 - Air Cleaner.)
DAir Bypass Valve Assembly, Air Bypass Hose, Air Hose E and Air Pipe C, Air Hose D Removal and
Installation (Refer to GROUP 15 - Intercooler.)
DSecondary Air Control Valve Bracket Removal and Installation
(Refer to GROUP 15 - Secondary Air Supply System.)
DBattery, Battery Tray Removal and Installation
3 4
5 6
7 8
9
1012
10±1 N·m
42±7 N·m 13±2 N·m
11
1
2
23±4 N·m
18
1716 1514
13
19
10±1 N·m
42±7 N·m
10±1 N·m
Removal steps
AA""CA1. Radiator upper hose connection
AA""CA2. Radiator lower hose connection
3. Engine coolant temperature gauge
unit connector
4. Engine coolant temperature sensor
connector
5. Water hose
6. Water outlet fitting and thermostat
case assembly
7. Thermostat case gasket
"AA8. O-ring
9. Detonation sensor connection
10. Water hose11. Water hose
12. Heater hose connection
13. Water hose
"BA14. Water inlet pipe
"AA15. O-ring
16. Turbocharger water
feed pipe
17. Gasket
DTurbocharger assembly
(Refer to GROUP 15.)
18. Turbocharger water
return pipe
19. Gasket

ENGINE COOLING -Water Hose and Water Pipe/Radiator14-15
REMOVAL SERVICE POINT
AA"RADIATOR UPPER HOSE/RADIATOR LOWER
HOSE DISCONNECTION
After making mating marks on the hose and the hose clamp,
disconnect the hose.
INSTALLATION SERVICE POINTS
"AAO-RING INSTALLATION
Fit an O-ring into the groove of the water inlet pipe and
apply water to the circumference of the O-ring or the
inside of the mounting surface of the pipe for insertion.
CAUTION
Do not let the O-ring get contaminated with grease, such
as engine oil.
"BAWATER INLET PIPE INSTALLATION
After installing the water outlet fitting and the thermostat
case assembly, tighten the mounting bolt of the water
inlet pipe to the specified torque.
"CARADIATOR LOWER HOSE/RADIATOR UPPER
HOSE CONNECTION
1. Insert each hose as far as the projection of the water
inlet pipe or water outlet fitting.
2. Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
INSPECTION
WATER PIPE AND HOSE CHECK
Check the water pipe and hose for cracks, damage, clog
and replace them if necessary.
RADIATOR
REMOVAL AND INSTALLATION
Pre-remobal and Post-installation Operation
DEngine Coolant Draining and Supplying (Refer to P.14-6.)
DUnder Cover Removal and Installation (Refer to GROUP 51 - Front Bumper.)
DAir Cleaner Assembly Removal and Installation (Refer to GROUP 15.)
DAir Hose E, Air Pipe C, Air hose D Removal and Installation (Refer to GROUP 15 - Intercooler.)
DBattery and Battery Tray Removal and Installation
Water pump or
thermostat case
O-ring
Warter inlet pipe

ENGINE COOLING -Radiator14-16
1 23
45
6
7
12±2 N·m
9
16
14 19
18 12
17 10
8
13
15 10
20 21
12±2 N·m5.0±1.0 N·m
3.5±0.4 N·m
4.5±0.4 N·m4.0±0.4 N·m
13
1112±1 N·m
Radiator removal steps
1. Radiator drain plug
2. Radiator cap
3. Reserve tank hose
4. Reserve tank
5. Reserve tank cap
6. Reserve tank hose
7. Reserve tank bracket
AA""AA8. Radiator upper hose
AA""AA9. Radiator lower hose
10. Upper insulator
AB"11. Air Pipe B mounting bolt
12. Radiator assembly
13. Lower insulator
14. Radiator fan controller connector
15. Radiator fan controller, radiator fan
motor, fan and shroud assemblyRadiator fun controller and radiator
fun motor removal steps
AB"11. Air Pipe B mounting bolt
14. Radiator fan controller connector
16. Radiator fan motor connector
17. Radiator fan controller
18. Radiator fan motor fan and shroud
assembly
19. Fan
20. Radiator fan motor
21. Shroud

ENGINE COOLING -RadiatorENGINE COOLING -Radiator14-17
REMOVAL SERVICE POINTS
AA"RADIATOR UPPER HOSE/RADIATOR LOWER
HOSE REMOVAL
After making mating marks on the radiator hose and the hose
clamp,disconnect the radiator hose.
AB"AIR PIPE B MOUNTING BOLT REMOVAL
After removing the bolt, position air pipe B out of the way
so that the pipe does not interfere with the radiator assembly
or the radiator fan motor, the fan and shroud assembly.
INSTALLATION SERVICE POINT
"AARADIATOR LOWER HOSE/RADIATOR UPPER
HOSE INSTALLATION
1. Insert each hose as far as the projection of the water
inlet pipe, water outlet fitting or radiator.
2. Align the mating marks on the radiator upper hose and
hose clamp, and then connect the radiator hose.

INTAKE AND EXHAUST -General Information15-2
GENERAL INFORMATION
SUPERCHARGING PRESSURE CONTROL
By controlling the duty of the waste gate solenoid valve, the waste gate actuator functions to control the supercharging
pressure. This allows a supercharged pressure matching the engine operation state to be attained. Control is carried
out to prevent excessive supercharging and thereby prevent engine damage.
SECONDARY AIR CONTROL
When decelerating during high-speed travel, the secondary air is introduced into the upstream of the turbocharger
to prevent the turbine speed from dropping and to increase the acceleration responsiveness after deceleration.
The secondary air is introduced into each cylinder of the exhaust manifold to maximize the effect.
Secondary air
control solenoid
valve
Air
inletSecondary
air valve
Waste gate
solenoid
valve
Waste gate
actuator
TurbochargerVacuum
tank