Engine Mitsubishi 4D55
Crisis situations in the world oil market in the mid-seventies of the last century led to the fact that car manufacturers began to pay more attention to the production of diesel engines. One of the oldest Japanese companies, Mitsubishi, was among the first to understand the relevance of equipping passenger cars with these engines.
The wealth of experience (Mitsubishi installed the first diesel engines on its cars back in the thirties) made it possible to painlessly move on to expanding the range of its power units. One of the most successful developments in this segment was the appearance of the Mitsubishi 4D55 engine.
It was first installed in September 1980 on the fourth generation Galant passenger car. The time of her retirement is 1994.
However, even now, after many years, we can meet this reliable engine on the roads of the world in different brands of cars.
Technical specifications
Let's decipher the marking of the Mitsubishi 4D55 diesel engine.
- The first number 4 shows that we have an in-line four-cylinder engine, where each of them has two valves.
- The letter D denotes a diesel engine type.
- Indicator 55 - indicates the number of the series.
- Its volume is 2.3 l (2 cm347),
- rated power 65 l. With.,
- torque - 137 Nm.
It features swirl-chamber fuel mixing, which gives it an advantage over direct injection in the following aspects:
- reduced noise during operation,
- creating less injection pressure,
- ensuring smoother operation of the motor.
However, such a system also had negative sides: increased fuel consumption, problems with starting in cold weather.
The engine has several modifications. The most popular was the 4D55T version. This is a turbocharged power unit with a capacity of 84 hp. With. and a torque of 175 Nm. It was installed on Mitsubishi Galant in 1980-1984 and other models of the brand.
Here are some of its dynamic characteristics on Galant.
- Maximum speed - 155 km / h.
- Acceleration time to 100 km / h - 15,1 seconds.
- Fuel consumption (combined cycle) - 8,4 liters per 100 km.
There are practically no differences between 4D55 and 4D56 engine models. The main difference is in volume: the more powerful Mitsubishi 4D56 engine has 2.5 liters. Based on this characteristic, it has a larger piston stroke by 5 mm and, accordingly, an increased height of the block head.
The identification number on this motor was placed in the TVND area.
Reliability and maintainability
The internal combustion engine is characterized by reliable operation and a long service life. The manufacturer did not declare indicators of its service life. It largely depends on the driving style of the driver, the type of car on which it is installed.
For example, if on the Galant model there were no complaints against him, then on the Pajero the number of malfunctions increased. Due to overloads of the structure, the rocker shafts and crankshaft failed. The cylinder head overheated, which led to the formation of cracks in it and in the cylinders themselves.
Also, before the expiration of the regulated replacement period, the timing belt could break. This was due to a bearing defect in the tension roller.
Car models with 4D55 engines
The engine had various modifications, in some of them the power reached 95 hp. With. Such variability made it possible to install such power units not only on passenger cars, but also on SUVs and commercial vehicles.
We list all the makes and models of cars where this motor was installed.
| Model name | Years of issue |
|---|---|
| Galant | 1980-1994 |
| Pajero | 1982-1988 |
| Pickup L200 | 1982-1986 |
| Minivan L300 (Delica) | 1983-1986 |
| canter | 1986-1988 |
| Ford Ranger | 1985-1987 |
| Ram 50 (Dodge) | 1983-1985 |
The presentation of the first generation Mitsubishi Pajero at the Tokyo Motor Show in the fall of 1981, equipped with one of the 4D55 trim levels, made a big splash. Since that time, the victorious march of this model along the roads and off-roads of the world began. The first version of the legendary car was a three-door. It was she who began to participate in all kinds of rallies, where she won many victories.
A more powerful modification of the 2.3 TD Mitsubishi 4D55T has found its place in the extended version of the SUV with five doors. It went into production in February 1983.
Judging by the reviews of numerous motorists who operated such motors, they pleased their owners with reliability and good dynamic qualities.
