Engine 1JZ-FSE

In 1990, the Toyota concern began to use a new series of engines - JZ - on their cars. They became the replacement for the M-series, which many experts still consider the most successful in the history of this company. But progress does not stand still - new engines were conceived as more durable and reliable, in addition, they were supplied with a whole list of additional lotions designed to protect the planet's ecology from the harmful emissions of an ever-growing number of cars. Several years passed, and in 2000, an even more perfect creation appeared in this series, the 1JZ-FSE engine, operating on D-4 technology, that is, with high-pressure direct fuel injection, similar to how it happens in diesel units.

Of course, the gasoline engine does not receive any increase in power or increase in torque, but fuel economy and improved traction at low revs are guaranteed.

But already in 2005, the company stopped producing 1JZ-FSE, and the last new cars equipped with it were sold in 2007.

Operational problems

If you strictly follow the instructions and take care of the machine, then there should not be any significant problems with it. But there are a few bad things:

• Poor availability of spark plugs (in order to somehow level this drawback, the manufacturers of the 1JZ-FSE 4d engine were forced to install "platinum" ones on the central cylinders);
• All mounted units have a common drive belt with a hydraulic tensioner, moreover, they are made in the USA, whose products are much inferior in durability to their native Japanese ones;
• High sensitivity to moisture ingress;
• In this engine, the plunger pair of the high-pressure pump can quickly fail due to significant differences in the composition of Russian and Japanese fuel, which is used to lubricate it.

The fact is that the lubricating properties of Japanese gasoline exceed that of Russian gasoline by more than eleven times due to the use of special additives. Therefore, the owners of cars equipped with a 1JZ-FSE high-pressure fuel pump engine quite often "get" to replace the pump (about $ 950) and injectors (about $ 350 each). These costs can be called a subscription fee for "managing a dream."

Specifications 1JZ-FSE

Volume	2,5 l. (2491 cc)
Power	200 hp
Torque	250 N * m at 3800 rpm
Compression ratio	11:1
Bore	71.5 mm
Piston stroke	86 mm
Ignition system	DIS-3
Injection system	Immediate D-4

In the event that the drive belt or chain is destroyed, the valves collide. The manufacturer recommends using gasoline with an octane rating of 95 as fuel, but the experience of operating cars with a Toyota 1JZ-FSE engine by domestic motorists suggests that 92 will do without complications.

The main differences in the design of the unit from the engine with conventional injection

• The injection pump is capable of creating a working pressure of up to 120 bar, while the electric pump of the injection engine is only up to 3.5 bar.
• Vortex nozzles create fuel torches of various shapes - in power mode - conical, and when burning a lean mixture - narrow, shifted to the candle, despite the fact that throughout the rest of the volume of the combustion chamber, the mixture is super-lean. The torch is directed in such a way that the liquid fraction of the fuel does not fall on either the piston head or the cylinder walls.
• The bottom of the piston has a special shape and there is a special recess on it, thanks to which the air-fuel mixture is redirected to the spark plug.
• FSE engines use vertically directed intake channels that provide the formation of a so-called reverse vortex in the cylinder, which sends the air-fuel mixture towards the spark plug and improves cylinder air filling (in conventional engines, this vortex is directed the other way).
• The throttle valve is controlled indirectly, that is, the accelerator pedal does not pull the cable, its position is only fixed by the sensor. The damper changes position with the help of a drive from an electric motor.
• FSE engines emit a lot of NO, but this problem is solved by using storage type catalytic converters in combination with traditional three-way ones.

Resource

We can reliably speak only about the size of the resource before the overhaul, that is, until the moment when it becomes necessary to intervene, except of course, replacing the timing belts, in the mechanical part of mass-series engines. In most cases, this happens in the third hundred thousand kilometers (approximately 200 - 000). As a rule, it costs to replace stuck or worn piston rings and valve stem seals. This is not yet a major overhaul, the geometry of the cylinders and pistons relative to their walls, of course, is preserved.

Is it worth it to buy contract engines

Contract 1JZ-FSE from Toyota Verossa

It often happens that our compatriots take a contract engine for a Toyota car. Let's see what he is. Such units are not just used ones, but legally dismantled from a car of the same brand, after it was written off or got into an accident. It is in fully working condition, it just needs to be correctly installed and configured. By the way, such engines are supplied complete with all attachments, thanks to which its installation on a car of a new owner is quick and easy.

Usually abroad, cars that have been in an accident are written off due to the loss of their presentation, but inside there are quite a few well-preserved units and individual parts. In general, buying such an engine will cost much less than repairing a native one. In addition, not a small guarantee is given for contract parts, which further popularizes this type of sale.

What brand of car is installed

These units work for:

• Progress;
• Brevis;
• Crown;
• Verossa;
• Mark II, Mark II Blit.

1JZ-FSE engine sound