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Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual - part 66

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-35

3. Measure the valve's total length. If the measurement is less

than the limit, replace the valve.

Standard value:

<Intake> 112.30 mm (4.421 inches)
<Exhaust> 114.11 mm (4.493 inches)

Minimum limit:

<Intake> 111.80 mm (4.402 inches)
<Exhaust> 113.61 mm (4.473 inches)

VALVE SPRINGS
1. Measure the free height of the springs. If it is less than the

limit, replace.

Standard value: 51.0 mm (2.01 inches)
Minimum limit: 50.0 mm (1.97 inches)

2. Measure the squareness of the springs. If it exceeds the

limit, replace.

Standard value: 2 degree angle
Limit: 4 degree angle

VALVE GUIDES
Measure the clearance between the valve guide and valve
stem. If it exceeds the limit, replace the valve guide or valve, or
both.

Standard value:

Intake 0.02

−

0.05 mm (0.0008

−

0.0019 inch)

Exhaust 0.04

−

0.07 mm (0.0016

−

0.0027 inch)

Limit:

Intake 0.10 mm (0.003 inch)
Exhaust 0.15 mm (0.005 inch)

VALVE SEAT
Assemble the valve, then measure the valve stem projection
between the end of the valve stem and the spring seating
surface. If the measurement exceeds the specified limit,
replace the valve seat.

Standard value: 49.30 mm (1.941 inches)
Limit: 49.80 mm (1.960 inches)

AKX00624

AKX00607

2˚

FREE
HEIGHT

AKX00714

VALVE
GUIDE

STEM OD

GUIDE ID

AKX00695

SPRING SEATING
SURFACE

VALVE STEM END

VALVE STEM
PROJECTION

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-36

VALVE SEAT RECONDITIONING PROCEDURE

1. Before correcting the valve seat, check for the clearance

between the valve guide and valve and, if necessary,
replace the valve guide.

2. Using the special tool or a seat grinder, correct to obtain the

specified seat width and angle.

3. After correcting the valve seat, lap the valve and valve seat

using lapping compound. Then, check the valve stem
projection.

VALVE SEAT REPLACEMENT PROCEDURE

1. Cut the valve seat from the inside to thin the wall thickness.

Then, remove the valve seat.

2. Rebore the valve seat hole in the cylinder head to a selected

oversize valve seat diameter.

Seat ring hole diameter:

Intake valve

0.3 OS 34.30

−

34.33 mm (1.3504

−

1.3516 inches)

0.6 OS 34.60

−

34.63 mm (1.3622

−

1.3634 inches)

Exhaust valve

0.3 OS 31.80

−

31.83 mm (1.2520

−

1.2531 inches)

0.6 OS 32.10

−

32.13 mm (1.2638

−

1.2650 inches)

3. Before fitting the valve seat, either heat the cylinder head up

to approximately 250

C (482

F) or cool the valve seat in

liquid nitrogen, to prevent the cylinder head bore from
galling.

4. Using a valve seat cutter, correct the valve seat to the

specified width and angle.
See "VALVE SEAT RECONDITIONING PROCEDURE" on
the previous page.

AKX00717

0.9 - 1.3 mm
(0.04 - 0.05 in)

65˚

45˚

30˚

AKX00610

0.5 - 1 mm
(0.020 - 0.039 in)

0.5 - 1 mm (0.020 - 0.039 in)

CUT
AWAY

AKX00611

HEIGHT OF
SEAT RING

OVERSIZE ID

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L ENGINE>

11D-37

VALVE GUIDE REPLACEMENT PROCEDURE

1. Remove the snap ring from the exhaust valve guide.

2. Using a press, remove the valve guide toward the cylinder

block.

CAUTION

Do not install a valve guide of the same size again.
3. Rebore the valve guide hole of the cylinder head so that it

fits the press-fitted oversize valve guide.

Valve guide hole diameter:

0.05 OS 11.05

−

11.07 mm (0.4350

−

0.4358 inch)

0.25 OS 11.25

−

11.27 mm (0.4429

−

0.4457 inch)

0.50 OS 11.50

−

11.52 mm (0.4528

−

0.4535 inch)

4. Install the new snap ring into groove of the exhaust valve

guide.

NOTE: The inlet valve guide has no snap ring groove.

5. Press-fit the valve guide until it protrudes 14 mm (0.6 inch)

from the cylinder head top surface as shown in the
illustration.

NOTE: When press-fitting the valve guide, work from the
cylinder head top surface.

NOTE: After installing the valve guides, insert new valves in
them to check for smooth operation.

AKX00712

REMOVAL

INSTALLATION

PRESS

PUSHROD

VALVE
GUIDE

AKX00727

14 mm
(0.6 in)

OIL PAN AND OIL PUMP

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ENGINE OVERHAUL <3.0L ENGINE>

11D-38

O IL PA N AN D O IL PU M P

REMOVAL AND INSTALLATION

M1113008100033

Required Special Tool:
MD998717: Crankshaft Front Oil Seal Installer

AKX00682

10 ± 2 N·m
87 ± 17 in-lb

14 ± 1 N·m
122 ± 9 in-lb
(M8 bolt)

8.8 ± 2 N·m
78 ± 17 in-lb

19 ± 3 N·m
14 ± 2 ft-lb

14 ± 2 N·m
122 ± 17 in-lb

24 ± 3 N·m
17 ± 2 ft-lb

11 ± 1 N·m
95 ± 9 in-lb

10 ± 2 N·m
87 ±17 in-lb

41 ± 8 N·m
30 ± 6 ft-lb
(M10 bolt)

5.9 ± 1 N·m
52 ± 9 in-lb

44 ± 5 N·m
33 ± 4 ft-lb

11 ± 1 N·m
95 ± 9 in-lb

5.9 ± 1 N·m
52 ± 9 in-lb

39 ± 5 N·m
29 ± 4 ft-lb

11 ± 1 N·m
95 ± 9 in-lb

APPLY ENGINE OIL TO
ALL MOVING PARTS
BEFORE INSTALLATION.

REMOVAL STEPS

>>H<<

1. OIL PRESSURE SWITCH

>>G<<

2. OIL FILTER
3 OIL FILTER BRACKET
4. OIL FILTER BRACKET GASKET
5. DRAIN PLUG

>>F<<

6. DRAIN PLUG GASKET

<<A>>

>>E<<

7. OIL PAN, LOWER
8. COVER

<<B>>

>>D<<

9. OIL PAN, UPPER
10.BAFFLE PLATE
11. OIL SCREEN
12.OIL SCREEN GASKET

13.BAFFLE PLATE
14.PLUG
15.RELIEF SPRING
16.RELIEF PLUNGER

>>C<<

17.CRANKSHAFT FRONT OIL SEAL

>>B<<

18.OIL PUMP CASE ASSEMBLY
19.O-RING
20.OIL PUMP COVER

<<C>>

>>A<<

21.OIL PUMP OUTER ROTOR

<<C>>

>>A<<

22.OIL PUMP INNER ROTOR
23.OIL PUMP CASE

REMOVAL STEPS (Continued)

Content .. 64 65 66 67 ..