Mitsubishi 4G37 1.8-liter engine was produced by Japanese concern from 1983 to 1994 and was installed on popular models, such as Lancer, Galant and Eclipse. The engine was offered in carburetor and injector version ECI-MULTI.
Technical specifications
4G37 carburetor 8v
| Characteristics | Reference |
|---|---|
| Fine volume | 1755 cm³ |
| Power system | Carburetor |
| Power | 86 hp |
| Torque | 137 Nm |
| Cylinder block | Cast-iron R4 |
| Cylinder head | Aluminum 8v |
| Cylinder diameter | 80.6 mm |
| Piston stroke | 86 mm |
| Compression ratio | 9.0 |
| Hydrocompensators | No |
| Transmission timing | Belt |
| Turbocharger | No |
| Oil | 3.9 liters 5W-40 |
| Fuel | AI-92 |
| Ecological class | Euro 0 |
| Resource | 300,000 km |
4G37B ECI-multi 8v
| Characteristics | Reference |
|---|---|
| Fine volume | 1755 cm³ |
| Power system | Injector |
| Power | 90 – 97 hp |
| Torque | 138 – 144 Nm |
| Cylinder block | Cast iron R4 |
| Cylinder head | Aluminum 8v |
| Cylinder diameter | 80.6 mm |
| Piston stroke | 86 mm |
| Compression ratio | 9.5 |
| Hydrocompensators | No |
| Transmission timing | Belt drive |
| Turbocharging | No |
| Oil | 3.9 liters 5W-40 |
| Fuel | AI-92 |
| Ecological class | Euro 1/2 |
| Resource | 350,000 km |
Application
| Automotive | Years of manufacture |
|---|---|
| Mitsubishi Galant E10 | 1983 – 1989 |
| Mitsubishi Galant E30 | 1987 – 1993 |
| Mitsubishi Lancer CV | 1987 – 1990 |
| Mitsubishi Lancer CA | 1988 – 1992 |
| Mitsubishi Eclipse 1G | 1989 – 1994 |
| Mitsubishi Space Wagon | 1983 – 1991 |
Disadvantages and problems
- Long-lasting timing belts and balancer shafts.
- Frequent oil leaks through the oil seals.
- Problems with electronic control unit and ignition system.
- Swimming idle speeds due to contamination of the throttle or throttle valve.
- Frequent need for valve adjustment.
- Fast wear of engine mounts.
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