Engine 4D56: specifications, photos and reviews

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

For the first time they started talking about in-line engines in 1860, when Etienne Lenoir designed his first unit. The idea was picked up by the auto industry instantly. The tasks of engineers of any era were to create a reliable model, and now the 4d56 engine pleases owners of passenger vehicles with its functionality. Excellent technical characteristics have allowed it to be used on almost 10 models.

Information from historical sources

Diesel, cost-effective to buy and use, the 4d56 engine belongs to the category of four-cylinder engines. His project debuted in the 90s specifically for Mitsubishi. The opinion of motorists about it was generally positive: the model has no serious flaws, “diseases”, and is easy to maintain.

Japanese auto manufacturers have been moving towards this ideal for a long time, having made several futile attempts to design a super-reliable unit. For a decade, the engineers of the countryfought over the creation of the 4d56 engine, resulting in a device capable of dispersing a car in a couple of seconds, despite its weight, considerable dimensions. The favorable conclusions made in the test drives were successfully confirmed by motorists who operated this unit in vehicles under severe off-road conditions.

In 1986, the motor appeared before the owners of representatives of the first generation of Pajero. He acted as an alternative to the option with a volume of 2.4 liters - 4D55.

What did the engineers change?

The set of the cylinder block in the 4d56 engine was made of cast iron alloy with in-line placement of 4 cylinders. Compared to its predecessor, the diameter has been increased: now it has reached 91.1 mm. They added advantages in the form of a forged crankshaft with high piston stroke and increased length of connecting rods. The result of all adjustments was an increase in volume to 2.5 liters.

The upper part of the block was closed by the government securities, which is made of aluminum. The cylinder head was supplemented with swirl combustion chambers. The timing package includes one camshaft, each cylinder has an intake and exhaust valve.

Important feature. Drivers are advised to adjust the valves. This is due to the fact that the timing did not change during the innovations. The presence of a belt, not a chain, indicates the need to replace it every 90 km.

Analogues of the 4d56 "Pajero" engine are Korean products "Hyundai". The first models of this motor did not have the character of "atmospheric", they hadwith a capacity of 74 "horses". There was no special dynamics.

New life

Further restyling brought the expected results. They began to produce engines with turbochargers. Power jumped to 90 “horses”, torque up to 197 Nm. The Koreans also began to install this motor under the marking "D4BF". Then there was more - the turbines were improved. An advantage was the installation of an intercooler. This again added power, which began to equal 104 hp. s.

There is no limit to perfection

The developers did not stop at the above update, adding the "Common Rail" fuel system. A grand event took place in 2001. The system was complemented by a new MHI TF035HL turbocharger. The diameters of the valves have changed: they have been reduced. The motor in the first generation pleased drivers with 136 hp. s., and the second performed functions with the same turbine, but with one difference - variable geometry. Both variants were produced according to European standards. In the version of the 4D56 turbo engine, the car received 178 hp. s.

About technical details

2.5 liter option selected as working volume. This gave the opportunity to travel on 95 "horses" without the use of a turbocharger. Cast iron block, in-line arrangement of cylinders used in the 4d56 diesel engine, no special frills - this is how the engine can be briefly described. Cast iron keeps the engine temperature in a stable state, preventing it from overheating and failing prematurely. A lot depends on how the driver drives. Applyingunreasonably sporty style, not sparing the vehicle, you can come to the repair of the regulations previously allotted by the manufacturer. What special features are interesting in this motor?

Highlights of the unit

Experts note the following important nuances.

1. The steel crankshaft has five support points at the same time as bearings. Dry sleeves pressed into the block do not allow the sleeve to be made as part of a major overhaul. Despite the production of pistons for the Mitsubishi 4d56 engine from aluminum alloys, the power unit differs from competitive types in durability and reliable characteristics.
2. The task of the vortex chambers is to increase the performance and upgrade from an environmental point of view. Thanks to their implementation, it was possible to achieve absolute fuel combustion.
3. The engine heating system helped make it difficult to start it on a frosty day in the past.
4. Air-cooled, water-cooled turbocharger adds pulling power from low rpm.

Almost similar corrections negated the likelihood of breakage. Troubles arose only in case of improper operation, illiterate actions of inexperienced auto mechanics. What can happen to the motor on the road?

About possible malfunctions

Despite the increased reliability, strength of parts, wear and tear and malfunctions take place in the life of a car:

1. A stretched balancer belt causes vibrationcars, fuel detonation. It is acceptable to replace it without dismantling the 4d56 turbo diesel engine.
2. Oil is oozing out of the valve cover. Repair consists of changing the cover gasket.
3. Crankshaft pulley fails. This is marked by accompaniment by knocks.
4. Smoke coming out from under the hood. This indicates the incorrect operation of the atomizers. Causes incomplete combustion of fuel.
5. Fuel system return pipes are fragile. Tightening them with great force leads to deformations.
6. Bubbling antifreeze: it means that a crack has formed in the government securities.

In alliance with the automatic transmission, the motor does not have good traction.

What do the mechanics advise?

The "golden rules" of a competent driver are as follows.

One of the top pieces of advice given by automotive industry professionals is to constantly monitor the balance shaft belt. You need to do this after driving 50,000 km. The breakage of this element leads to a rupture of the timing belt, violating the safety and peace of mind of the driver. Some craftsmen are trying to improve the condition of the power unit by throwing out the shaft belts. It is strongly not recommended to commit such a rash act. The load on the crankshaft will increase, eventually contributing to its complete breakdown. This will result in costly repairs.

The turbocharger resource is designed by manufacturers for 300,000 km. After every 30,000 km, it is worth cleaning the EGR valve and not neglecting serial diagnostics. Quality plays a significant role for the 4d56 Pajero Sport engine.poured into the fuel tank. This is especially noticeable in a 178 hp engine. With. Bad fuel is filled in - a decrease in resource should be expected. It is mandatory to change the fuel filter after driving 15 thousand km.

With regards to tuning the “older” motor in the world of the car market, experts do not advise forcing its quality. Some daredevils, however, give the car to a tuning studio, ordering a chip tuning and flashing service. In this way, 178 "horses" instantly turn into 210.

The engine was used at various times as a power plant for Mitsubishi Challenger, Delica, L200, L300, various modifications of Pajero, Space Gear, Strada.

Interesting fact. UAZ owners are successfully experimenting with this engine. Together with the manual transmission, they create an excellent union.

In general, a vital device is characterized as repairable. With the search for auto parts for him, there are no problems. The main thing is to arrive at the service station in a timely manner and subject the vehicle to diagnostic procedures, change the oil in time, and monitor the condition of the unit and its elements. In this case, the repair can be forgotten. It is necessary to choose a technical center, sparing no time, a lot depends on the experience of specialists.