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Mitsubishi 4G9 User Manual

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4G9 ENGINE (E - W) -
General Information
11A-0-3
PWEE9502-C
E
July 1997
Mitsubishi Motors Corporation
Revised
GENERAL INFORMATION
4G92
Descriptions
4G92-SOHC
4G92-DOHC-MIVEC
Type
In-line OHV, SOHC
In-line OHV, DOHC
Number of cylinders
4
4
Combustion chamber
Pentroof type
Pentroof type
Total displacement dm
3
1,597
1,597
Cylinder bore mm
81.0
81.0
Piston stroke mm
77.5
77.5
Compression ratio
10.0
11.0
Valve timing
Intake
valve
Opens
(BTDC)
20_, 14_*
17_ (Low-speed cam)
47.5_ (High-speed cam)
Closes
(ABDC)
42_, 58_*
31_ (Low-speed cam)
72.5_ (High-speed cam)
Exhaust
valve
Opens
(BBDC)
54_, 52_*
41_ (Low-speed cam)
70_ (High-speed cam)
Closes
(ATDC)
2_, 16_*
11_ (Low-speed cam)
35_ (High-speed cam)
Lubrication system
Pressure feed, full-flow filtration
Pressure feed, full-flow filtration
Oil pump type
Trochoid type
Trochoid type
Cooling system
Water-cooled forced circulation
Water-cooled forced circulation
Water pump type
Centrifugal impeller type
Centrifugal impeller type
*:
LANCER for general export and CARISMA for 6B model