Toyota 1NR-FE, 1NR-FKE engines

In 2008, a Toyota Yaris with a 1NR-FE engine with a start-stop system was introduced to the European market. Toyota designers used modern technologies and materials to develop this series of engines, which made it possible to make a small-displacement city engine with less emissions of harmful substances into the environment than previous engines.

The materials for the construction of the piston group were borrowed from the engine building for Formula 1 races. Replacing the 4ZZ-FE model, this modification was both atmospheric and turbocharged. Supplied with a six-speed manual transmission.

Technical characteristics of the Toyota 1NR-FE engine

Volume, cm3	1 329
Power, l. With. atmospheric	94
Power, l. With. turbocharged	122
Torque, Nm / rev. min	128/3 800 and 174/4 800
Fuel consumption, l./100 km	5.6
Compression ratio	11.5
ICE type	Inline four-cylinder
AI gasoline type	95

The engine number is located on the front of the block on the right near the flywheel.

Reliability, weaknesses, maintainability of the Toyota 1NR-FE engine

The cylinder block is cast from aluminum and is not repairable, since the distance between the cylinders is 7 mm. But even when using oil with a viscosity of 0W20 recommended by the manufacturer, the need to replace or repair it will not arise soon. Since the lubrication and cooling systems are designed at the highest technological level. The lubrication system does not allow overheating or oil starvation.

1NR FE engine repair on car - video lapse

There are weaknesses of these engine modifications:

• The EGR valve becomes clogged and accelerates the formation of carbon deposits on the cylinders, which leads to an “oil burn”, which is approximately 500 ml per 1 km.
• There are problems with a leak in the cooling system pump and a knock in the VVTi couplings during a cold start of the engine.
• Another disadvantage is the short life of the ignition coils.

The 1NR-FE engine is not very popular among Toyota owners, as it is not very traction and is only installed on models with a manual gearbox. But those who purchased a car with this engine are satisfied with it.

List of cars on which the 1NR-FE engine was installed

The 1NR-FE engine was installed on the models:

• Auris 150..180;
• Corolla 150..180;
• Corolla Axio 160;
• iQ 10;
• Step 30;
• Gate/Spade 140;
• Probox/Succeed 160;
• Ractis 120;
• Urban Cruiser;
• S-verse;
• Vitz 130;
• Yaris 130;
• Daihatsu Boon;
• Charade;
• Subaru Trezia;
• Aston Martin Cygnet.

History of the 1NR-FKE engine

In 2014, the Atkinson cycle was introduced into the 1NR-FE model, thereby increasing the compression ratio and thermal efficiency. This model was one of the first ESTEC engines, which in Russian means: "Economy with high efficiency combustion." This allowed to reduce fuel consumption and increase engine power.

This engine model was designated 1NR-FKE. Toyota has so far produced cars with this engine only for the domestic market. He is very whimsical to the quality of fuel.

On this model of the engine, the company installed a new shape of the intake manifold and changed the cooling system jacket, which made it possible to reduce and maintain the desired temperature in the combustion chamber, thus there was no loss of torque.

Also, for the first time, the cooling of the USR system was used because of this, engine detonation occurs at low speeds, which makes it possible to correct this situation.

A VVTi clutch was installed on the exhaust camshaft. The Atkinson cycle used made it possible to better fill the combustion chamber with a combustible mixture and cool it.

The disadvantages of the Toyota 1NR-FKE engine are:

• work noise,
• the formation of carbon deposits in the intake manifold due to the USR valve;
• short life of ignition coils.

Technical characteristics of the Toyota 1NR-FKE engine

Volume, cm3	1 329
Power, hp from.	99
Torque, Nm / rev. min	121 / 4 400
Fuel consumption, l./100 km	5
Compression ratio	13.5
ICE type	Inline four-cylinder
AI gasoline type	95

List of cars on which the 1NR-FKE engine was installed

The 1NR-FKE engine is installed in Toyota Ractis, Yaris and Subaru Trezia.

The 1NR-FE and 1NR-FKE engines are two high-tech engines developed by Toyota for class A and B passenger cars operating in the city. The engines were created to improve the environmental class and reduce fuel consumption.

There are not very many owners of these cars yet, but there are already positive reviews about the quality of operation. Since these cars are urban, so far there have been no engines with high mileage and, accordingly, requiring major repairs or replacements. Judging by the design of the blocks of these models, the maximum repair possible is the replacement of piston rings and liners of a standard size without any cylinder bores or crankshaft grinding. Timing chains are changed at a range of 120 - 000 km. If the timing marks do not match, the valves bend against the piston.

Reviews

Acquired Corolla after the Chinese car industry. I specially took it with a 1.3 engine as an economical device is needed, and here's the surprise when it showed a consumption in the city and without traffic jams of 4.5 liters per 100 km, and if you "vomit" in the city with an average of 20 km / h, then the consumption will come out in around 6.5 liters in summer and 7.5 liters in winter. On the highway, of course, this car is very peculiar, it travels up to 100 km / h, after which there is not enough power and a consumption of 5,5 liters.