Mitsubishi Lancer Evolution X. Manual — part 91

EXHAUST MANIFOLD AND TURBOCHARGER

TSB Revision

INTAKE AND EXHAUST

15-23

>>B<< TURBOCHARGER OIL RETURN TUBE
GASKET INSTALLATION

Install the gasket as its protrusion is in the direction shown.
Install the gasket so that its protrusion faces in the direction
shown in the illustration.

.

>>C<< TURBOCHARGER
BRACKET/TURBOCHARGER BRACKET AND
TURBOCHARGER ASSEMBLY COUPLING BOLT
INSTALLATION

1. Check that the turbocharger bracket is in close contact with

the turbocharger assembly and with the cylinder block, and
then temporarily tighten the turbocharger bracket.

2. Tighten the bolt of the cylinder block side to the specified

torque.

Tightening torque: 51 ± 7 N⋅ m (38 ± 5 ft-lb)

3. Tighten the turbocharger bracket and the turbocharger

assembly coupling bolt to the specified torque.

Tightening torque: 64 ± 5 N⋅ m (48 ± 3 ft-lb)

.

>>D<< EXHAUST MANIFOLD AND
TURBOCHARGER ASSEMBLY COUPLING BOLT
AND NUT INSTALLATION

1. Tighten the bolts and nuts according to the procedure below.

(1) Install two washers with their identification holes facing

outside as shown in the figure.

(2) Tighten the bolts and nuts to 29 ± 2 N⋅ m (22 ± 1 ft-lb) in

the order of number shown in the figure.

AC706181

AC

Protrusion

AC708637AC

Turbocharger assembly

Turbocharger bracket

Cylinder block

AC706227

Identification
hole

AB

Identification hole

Turbocharger assembly side

Nut, bolt side

EXHAUST MANIFOLD AND TURBOCHARGER

TSB Revision

INTAKE AND EXHAUST

15-24

(3) Use special tool MB991614 to tighten bolts and nuts 65 ±

5 degrees angle.

.

>>E<< TURBOCHARGER EXHAUST OUTLET
FITTING BRACKET INSTALLATION

1. Check that the turbocharger exhaust outlet fitting bracket is

in close contact with the turbocharger exhaust outlet fitting
and with the cylinder block, and then temporarily tighten the
turbocharger exhaust outlet fitting bracket.

2. Tighten the bolt of the cylinder block side to the specified

torque.

Tightening torque: 51 ± 7 N⋅ m (38 ± 5 ft-lb)

3. Tighten the bolt of the turbocharger exhaust outlet fitting

bracket side to the specified torque.

Tightening torque: 64 ± 5 N⋅ m (48 ± 3 ft-lb)

.

>>F<< TURBOCHARGER COMPRESSOR
BRACKET INSTALLATION

1. Check that the turbocharger compressor bracket is in close

contact with the turbocharger assembly and with the cylinder
block, and then temporarily tighten the turbocharger
compressor bracket.

2. Use special tool MB992274 to tighten the turbocharger

compressor bracket mounting bolt (cylinder block side) to
the specified torque.

Tightening torque: 51 ± 7 N⋅ m (38 ± 5 ft-lb)

3. Tighten the bolt of the turbocharger assembly side to the

specified torque.

Tightening torque: 51 ± 7 N⋅ m (38 ± 5 ft-lb)

AC711125

65˚ ± 5˚

AC

MB991614

AC708638AC

Cylinder block

Turbocharger exhaust
outlet fitting bracket

Turbocharger
exhaust outlet fitting

AC708639AC

Turbocharger compressor bracket

Cylinder block

AC710947AC

MB992274

Turbocharger
compressor
bracket

Turbocharger
air inlet fitting

EXHAUST MANIFOLD AND TURBOCHARGER

TSB Revision

INTAKE AND EXHAUST

15-25

INSPECTION

M1151009400217

.

EXHAUST MANIFOLD CHECK

1. Check the exhaust manifold for damage and cracks, and

replace it if necessary.

2. Using a straight edge and a thickness gauge, check for

distortion of the cylinder head and turbocharger installation
surface. If it exceeds the limit value, replace it.

Limit <Cylinder head assembly side>: 0.70 mm

(0.028 inch)

Limit <Turbocharger assembly side>: 0.40 mm (0.016

inch)

.

TURBOCHARGER ASSEMBLY CHECK

1. Visually check the turbine wheel and the compressor wheel

for cracking or other damage.

2. Check whether the turbine wheel and the compressor wheel

can be easily turned by hand.

3. Check for oil leakage from the turbocharger assembly.
4. Check whether or not the turbocharger waste gate

regulating valve remains open. If any problem is found,
replace the part after disassembly.

EXHAUST PIPE AND MAIN MUFFLER

TSB Revision

INTAKE AND EXHAUST

15-26

EXHAUST PIPE AND MAIN MUFFLER

REMOVAL AND INSTALLATION

M1151008701854

AC708975

41 ± 10 N·m
30 ± 7 ft-lb

1

2

3

44 ± 5 N·m
33 ± 3 ft-lb

5

6

8

44 ± 5 N·m
33 ± 3 ft-lb

9

10

N

11

12

12

13

14

N

15

16

N

17

18

19

N

4

7

20

N

5.0 ± 2.0 N·m
45 ± 17 in-lb

20

N

20

N

5.0 ± 2.0 N·m
45 ± 17 in-lb

21

23

N

23

N

24

25

22

7.0 ± 3.0 N·m
62 ± 26 in-lb

9.5 ± 3.5 N·m
85 ± 30 in-lb

5.0 ± 2.0 N·m
45 ± 17 in-lb

41 ± 10 N·m
30 ± 7 ft-lb

59 ± 10 N·m
44 ± 7 ft-lb

75 ± 19 N·m
56 ± 14 ft-lb

9.5 ± 3.5 N·m
85 ± 30 in-lb

5.0 ± 2.0 N·m
45 ± 17 in-lb

AB

Exhaust main muffler and rear
floor panel heat protector
removal steps

1.

Exhaust main muffler

10. Seal ring
11. Exhaust muffler hanger
12. Exhaust tail pipe diffuser
13. Rear floor panel heat protector

Center exhaust pipe removal
steps

2.

Center exhaust pipe

10. Seal ring
14. Exhaust pipe gasket
15. Exhaust muffler hanger

Catalytic converter removal
steps

3.

Harness cover

4.

Heated oxygen sensor (rear)
connector

<<

A

>>

>>

B

<<

5.

Heated oxygen sensor (rear)

6.

Catalytic converter

14. Exhaust pipe gasket
16. Exhaust pipe gasket
17. Exhaust muffler hanger
18. Exhaust muffler hanger protector

Front exhaust pipe removal
steps

•

Cowl side trim (Refer to GROUP
52A, Trims

P.52A-12

).

•

Footrest

•

Floor console side cover (Refer to
GROUP 52A, Front Floor
Console Assembly

P.52A-10

).

•

Turn up the passenger side floor
carpet.

•

Front floor backbone brace (Refer
to GROUP 42A, Loose Panel

P.42A-198

).

7.

Heated oxygen sensor (front)
connector

<<

A

>>

>>

B

<<

8.

Heated oxygen sensor (front)

9.

Front exhaust pipe

16. Exhaust pipe gasket
19. Seal ring

Front floor panel front heat
protector and front floor panel
rear heat protector removal
steps

2.

Center exhaust pipe

3.

Harness cover