1NZ-FE gasoline engine: specifications, features and reviews

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:43

Specially for installation on a small class of Toyota cars, a line of NZ series engines was developed. The first motors began to be produced in 1997, their production continues at the present time. This engine is rightfully considered one of the most durable with proper maintenance, because even today it is installed on new car models. The basic version is the 1NZ-FE engine with a volume of 1.5 liters and a power of 109 hp. s.

Some general information

First of all, I would like to say about the so-called disposability of this motor among motorists. The fact is that all Japanese power units of those times were made of thin-walled aluminum alloy. There was no possibility of bridging. For this simple reason, it is not possible to carry out major repairs if necessary. This was the main factor that hinderedmany from buying a used car with an NZ series engine. After all, the mileage could have been twisted, and in which case you would have to take a contract 1NZ-FE engine, and this pleasure is not cheap.

At the same time in Russia there are a large number of "Kulibins" who can repair the unrepairable and find a suitable part from a completely different car. That is why many owners of cars with an NZ series engine do not need to worry about this. The main thing is to take care of the motor and service it in time.

Quick Specs

As noted above, the NZ series engines are intended exclusively for the small class of Japanese Toyota cars. This is quite logical, because with 1.5 liters of volume and 109 liters. With. you can hardly drive a Prado or a Camry.

This is a 4-cylinder transverse engine with a DOCH gas distribution system. It turns out that each cylinder has 4 valves. Timing two-shaft upper location. It is driven by a roller chain. A "Toyota" system for changing the valve timing of the VVT-i type is installed on the shaft. The weight of this power unit is only 112 kilograms, and the total motor resource is approximately 200,000 hours. The amount of oil in the system is 3.7 liters, and fuel consumption is 13 liters in the urban cycle, 6 on the highway and 9 in the combined cycle. It is hardly possible to call this engine economical, especially when it comes to regular city driving.

Design featuresmotor

As noted above, it is not possible to overhaul this power unit. All due to the fact that thin-walled ductile iron sleeves are fused into the block. Cooling jacket - open type. The designers were puzzled by the issue of reducing the degree of cylinder wear. To do this, the crankshaft was installed with an offset relative to the line of the axes of the cylinders. This decision allowed to slightly increase the resource of the motor. Along with this, LFA technology was used. This is a special coating on the pistons, which somewhat reduced the degree of friction.

There are no hydraulic compensators in the motor design. Therefore, the manufacturer recommends adjusting the valves every 20,000 kilometers using special tappets. The 1NZ-FE engine, the characteristics of which we examined, had a rather popular fuel supply system. The so-called sequential injection is good because each nozzle is controlled by an electronic unit separately.

Just maintenance

If you follow the scheduled maintenance schedule, then this motor is capable of walking approximately 500,000 kilometers. After that, it is usually changed to a contract. The main conditions for the normal operation of the power unit are as follows:

• change oil and filter elements every 10 thousand kilometers;
• adjust valve clearance every 20,000 kilometers;
• replacing the timing chain every 150 thousand km;
• replacement of antifreeze in the systemcooling every 1.5-2 years.

It is also advisable to fill in the oil for the 1NZ-FE engine, which is prescribed by the manufacturer. The most popular brands that are fully compatible with tolerances are Motul 5w30, Elf, etc. Do not forget to periodically replace the air filter. It is advisable to inspect it every 20,000 kilometers and install a new one if necessary.

1NZ-FE engine price

For many drivers who drive fairly long distances every day, sooner or later there comes a time when they have to start looking for a new motor. And not because the engine was used incorrectly, it's just that its resource has expired. In this case, many go to the showdown in search of a new heart for their car. The average price of a 1NZ-FE contract engine is about 30-35 thousand rubles. Not very expensive either. But here you need to be careful. Mileage is sometimes difficult to determine, but it plays a decisive role here. After all, if a motor of such a plan has already run off more than half of its resource, then it hardly makes sense to buy it.

It is advisable to take with you a knowledgeable person who will help you make the right choice. In any case, the contract ICE is the most optimal. After all, you will receive a guarantee for it in the form of a certain period or mileage. If during this time something happens to the power unit, then you can repair it for free or change it to another one.

Character engine malfunctions and how to solve them

Oftenthe first engine malfunctions appear at a sufficiently high mileage. At the same time, it is worth taking into account the fact that the manufacturer has done quite a lot to reduce the resource of the internal combustion engine. In particular, this is due to the creation of a short motor and a reduction in the length of the crankshaft. This kind of change has left its mark.

First of all, the timing chain often fails, and sometimes the tensioner and damper. This can be understood both by the mileage, which should approach 150 thousand, and by the characteristic knock and extraneous noise. In this case, it is recommended to replace the chain, and if necessary, the chain tensioner and guide.

In case of floating speed, it is recommended to clean the throttle and replace the idle speed sensor. Usually after that the problem disappears completely. Still quite often, motorists are faced with high oil consumption. In this case, the manufacturer recommends replacing the oil scraper rings. But it also happens that the wrong lubricant is used for the 1NZ-FE engine. What kind of oil to fill in this motor is written in the manual, it is advisable to follow the manufacturer's recommendations.

Is tuning worth it?

The 1NZ-FE contract engine, the price of which, depending on the condition, is 30-50 thousand rubles, practically does not make much sense to improve it. This is due to its "disposability". At the same time, various kit kits will cost you the cost of the same motor. If you seriously deal with this issue, then you will have to change the nozzles, fuel pump, electronic control unit, etc. This willcost quite a lot.

But if there is a great desire, then you can be puzzled by this question. To add 40-50 "horses" you will need to install the Blitz kit, replace the standard injectors with 2ZZ-GE and install a more efficient 1JZ-GTE fuel pump. It is also advisable to replace the standard cylinder head gasket with a thicker one.

Consumer reviews

Many experienced motorists call this motor trouble-free. With proper care, it really does not cause trouble to its owner. There is not a lot of electronics here, everything is extremely simple and reliable. Of course, the engine is afraid of overheating, since its head is aluminum and it can lead. You should not drive at high speeds for a long time, as this can lead to accelerated wear of the rubbing parts of the piston group.

Since the designers used a plastic intake manifold to lighten the mass of the internal combustion engine, therefore it is recommended to install HBO on such a motor only with the replacement of the manifold. Also, many experts pay attention to the fact that the VVT-i variable valve timing system is very sensitive to fuel quality. Incorrect fuel can lead to costly repairs.

Versatile and reliable

In the event of a serious breakdown, they do not repair, but simply replace the 1NZ-FE engine. But as practice shows, many cars go into recycling before this engine fails. It is precisely because of its reliability thatthe power unit is installed on 17 models of Toyota cars. It is found even on European and American cars. This says a lot, because the Japanese are famous for the quality of their cars, and this motor is proof of that. Some motorists boost the power unit in order to obtain additional power. This approach also makes sense, because many lack 109 "horses".

Benefits at a Glance

This motor has more advantages than disadvantages. Let's start with the most basic. Firstly, this Japanese power unit often runs exactly as many hours as prescribed by the manufacturer. And if you take into account that not all drivers comply with the deadlines and feel sorry for the engine, then this is already an indicator. Secondly, it is a fairly light and compact internal combustion engine, which is easy to remove and install. Therefore, the cost of its repair will not be as large as expected.

Despite the fact that the 1NZ-FE engine is not overhauled, in the event of a minor breakdown, it can be easily restored. This is due to the fact that all minders have studied the design of the Japanese motor from A to Z. And the price of a new contract ICE is more than acceptable.

Summarize

The first Japanese 1NZ-FE engine is about 20 years old. Over the years it has gradually improved. But as it was not maintainable from the beginning of production, it has remained so at the present time. Perhaps this is his only big drawback. But at the same time, the NZ lineenjoys great popularity and demand. It is not just that these engines are put on many Toyota small cars. At the very least, this indicates the feasibility of such a procedure.

If you change the oil, timing chain and other important mechanisms and components in time, then this motor will last a long time. In fact, 300 thousand mileage is not so little. Many drivers who spend whole days behind the wheel roll up such numbers in 5-6 years. What can we say about those who use the car only to go to work and back. In general, we can say that this is a worthy engine, which is still in use today. He is not very economical and only likes good oil and gasoline. Otherwise, this motor is unpretentious and works like a clock for quite a long time with proper care.