Mitsubishi 4G6 series Specifications download pdf (Page 83)

4G6

ENGINE

<1992>

Cylinder Head and Valves

DOHC

IC-83

Valve

seat

6EN020!

Identification-

color

VALVE SEAT REPLACEMENT PROCEDURE

(1)

Refer to Page 1 IC-77 noting that the only difference is in

the reboring size.

Intake valve seat hole diameter

0.3 mm

(.012

in.) O.S.

. . . . . . . . . . . . . . . . . . . .

35.30-

35.33 mm

(1.3898

.3909

in.)

0.6 mm

(.024

in.) O.S.

. . . . . . . . . . . . . . . . . . . .

35.60

35.63 mm

(1.4016-

1.4028 in.)

Exhaust valve seat hole diameter

0.3 mm

(.012

in.) O.S.

. . . . . . . . . . . . . . . . . . . .

33.30-

33.33 mm

(1.3110-

1.3122

in.)

0.6 mm

(024

in.) O.S.

. . . . . . . . . . . . . . . . . . . .

33.60-

33.63 mm

(1.3228-

1.3240 in.)

VALVE GUIDE REPLACEMENT PROCEDURE

(1) Refer to Page

C-77,

noting that there are differences in

the diameter of the valve guide hole as well as in the

guide’s installed height.

Valve Guide Hole Diameter

0.05 mm

(.002

in.) O.S.

. . . . . . . . . . . . . . . .

12.05

12.07 mm

(.4744

.4752

in.)

0.25 mm

(.OIO

in.) O.S.

. . . . . . . . . . . . . . . .

12.25-

12.27 mm

(.4823

4831

in.)

0.50 mm

(.002

in.) O.S.

. . . . . . . . . . . . . . . .

12.50-

12.52 mm

(.4921-

.4929

in.)

INSTALLATION SERVICE POINTS

+A4

VALVE STEM SEAL INSTALLATION

(1) Install the valve spring seat.

(2) Using the special tool, install a new stem seal to the valve

guide.

Caution

Do not reuse the valve stem seal.

I)B4

VALVE SPRING INSTALLATION

(1) Install the valve spring so that its end with identification

color is positioned on the rocker arm end.

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Mitsubishi 4G6 series Specifications Page 83

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