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Mitsubishi 4G9 User Manual

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4G9 ENGINE (E-W) -
General Information
11A-0-4
4G93
Descriptions
4G93-SOHC
4G93-DOHC
4G93-DOHC-GDI
Type
In-line OHV, SOHC
In-line OHV, DOHC
In-line OHV, DOHC
Number of cylinders
4
4
4
Combustion chamber
Pentroof type
Pentroof type
Pentroof type
Total displacement dm
3
1,834
1,834
1,834
Cylinder bore mm
81.0
81.0
81.0
Piston stroke mm
89.0
89.0
89.0
Compression ratio
10.0, 9.5
10.5
11.7*
1
, 12.0*
2
Valve timing
Intake
valve
Opens
(BTDC)
14_
20_
15_
Closes
(ABDC)
50_
60_
56_
Exhaust
valve
Opens
(BBDC)
58_
61_
55_
Closes
(ATDC)
10_
15_
15_
Lubrication system
Pressure feed, full-
flow filtration
Pressure feed, full-
flow filtration
Pressure feed, full-
flow filtration
Oil pump type
Trochoid type
Trochoid type
Trochoid type
Cooling system
Water-cooled forced
circulation
Water-cooled forced
circulation
Water-cooled forced
circulation
Water pump type
Centrifugal
impeller
type
Centrifugal
impeller
type
Centrifugal
impeller
type
*
1
: Up to 1999 model
*
2
: From 2000 model
PWEE9502-G
E
May 2000
Mitsubishi Motors Corporation
Revised