Mitsubishi 4G1 series

4G1 ENGINE (E–W) – General Information
11A-0-8
PWEE9520
E
Nov. 1995Mitsubishi Motors Corporation
Descriptions 4G18 16-VALVE–CARBURETOR 4G18 16-VALVE–MPI
Type In-line OHV, SOHC In-line OHV, SOHC
Number of cylinders 4 4
Combustion chamber Pentroof type Pentroof type
Total displacement dm
3
1,584 1,584
Cylinder bore mm 76.0 76.0
Piston stroke mm 87.3 87.3
Compression ratio 9.5 9.5, 10*
1
*
2
Number of
valves
Intake 8 8
va
l
ves
Exhaust 8 8
Valve timing Intake opens BTDC 12_ BTDC 17_ , BTDC 9_*
1
, BTDC 17_*
2
Intake closes ABDC 48_ ABDC 39_ , ABDC 51_*
1
, ABDC 43_*
2
Exhaust opens BBDC 48_ BBDC 49_ , BBDC 49_*
1
, BBDC 53_*
2
Exhaust closes ATDC 12_ ATDC 7_ , ATDC 15_*
1
, ATDC 7_*
2
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
*
1
: SPACE STAR for Europe
*
2
: LANCER for General Export
PWEE9520-E
E
Feb. 2001Mitsubishi Motors Corporation Revised