Engine 1HZ
Japanese engines deserve respect all over the world. Especially when it comes to diesel units with the designation HZ. The first power unit of this line was the 1HZ engine - a voluminous diesel unit that became legendary already in the early 90s.
History and characteristics of the engine
The 1HZ power unit was developed in the early 90s of the last century specifically for the new generation of Land Cruiser 80 series SUVs. Cars with this unit were supplied to almost all countries of the world, because the engineering design of Toyota 1HZ made it possible to operate this engine in any conditions.
Specifications were fairly average:
| Working volume | 4.2 liters |
| Fuel | diesel |
| Rated power | 129 horsepower at 3800 rpm |
| Torque | 285 N * m at 2200 rpm |
| Real mileage potential (resource) | 1 kilometers |
At the very beginning of production, the 1HZ diesel was not declared by the corporation as a millionaire power unit. But already in the mid-90s, it became clear that a million kilometers is far from the limit of exploitation of this miracle of Japanese engineering.
In our country, you can still meet the first SUVs equipped with 1HZ internal combustion engines. These cars have repeatedly reset the mileage counter and to this day are not very frequent customers of the car service.
Main advantages
The main strengths of the engine are not technical characteristics. With such a large volume, the unit does not produce so many horses. Probably, this shortcoming would be corrected by the turbine, but with it the potential of the unit would be significantly reduced.
Having processed the reviews of car drivers with a 1HZ unit, the following advantages of a diesel monster from Toyota can be distinguished:
- huge mileage potential;
- no minor damage
- processing of absolutely any diesel fuel;
- tolerance for extreme temperature conditions of operation;
- reliable piston group subject to overhaul and boring.
Of course, the reliability and reliability of the unit depend on the conditions and features of its operation. If you change the oil in time, adjust the valve clearances and ignition, problems with the operation of the car will not arise.
Possible engine problems
If the valve adjustment was not carried out at the right time, but with a great delay, increased piston wear may occur. Also, the resolution of the piston group is observed when using a variety of esters to quickly start the internal combustion engine in cold weather.
Do not forget that in front of you is a fairly old power unit. You should be more careful with him. Other common repair issues include:
- the injection pump system suffers on almost all engines closer to 500 thousand mileage;
- the unit must be serviced only by a specialist - a special installation of 1HZ ignition marks is required here;
- poor quality fuel slowly destroys the piston group and valves.
Perhaps there are no more shortcomings in this engine. One of the advantages of owning a car with such a power unit is that you can buy a contract 1HZ engine when the native unit has traveled more than a million kilometers. Today, such a procedure will not cost you too much money, but will provide the car with an almost new engine.
Summing up
The area of use of the 1HZ engine was the Land Cruiser 80, Land Cruiser 100 and the Toyota Coaster Bus. To date, cars with these power units continue to be actively used and do not let their owners down.
It was one of the best engines of Toyota Corporation, which took an active part in creating the company's name. It is thanks to such inventions that the corporation is respected all over the world today.
