Toyota 3UZ-FE engine

Content

Specifications 3UZ-FE
Modifications
Where is the engine number
Engine problems
Tuning 3UZ-FE
Video about the modifications 3UZ-FE V8 4.3 liter

The Toyota 3UZ-FE engine in 2000 replaced the outdated 1UZ-FE engine. Its working volume was increased from 4 to 4,3 liters, equipped with a VVT-i system for shifting the phases of the gas distribution mechanism (timing), valves of larger diameter. The resource of 3UZ-FE in stock is in the range of 300-500 thousand kilometers.

Specifications 3UZ-FE

Engine displacement, cc	4292
Maximum power, hp	276 – 300
Maximum torque, N * m (kg * m) at rpm.	417 (43) to 3500 419 (43) to 3500 430 (44) to 3400 434 (44) to 3400 441 (45) to 3400
Fuel used	Petrol Premium (AI-98) Petrol Gasoline AI-95 Gasoline AI-98
Fuel consumption, l / 100 km	11.8 – 12.2
engine's type	V-shaped, 8-cylinder, 32-valve, DOHC
Add. engine information	3
Maximum power, h.p. (kW) at rpm	276 (203) to 5600 280 (206) to 5600 282 (207) to 5600 286 (210) to 5600 290 (213) to 5600 300 (221) to 5600
Compression ratio	10.5 – 11.5
Cylinder diameter, mm	81 – 91
The piston stroke, mm	82.5
The mechanism for changing the volume of cylinders	no
CO2 emission in g / km	269
Number of valves per cylinder	4

The purpose of the 8-cylinder design with 32 valves, two heads, 4 timing camshafts is to equip executive cars. The 3UZ-FE has a cast steel crankshaft.

The main indicators of the engine produced in 2000-2010:

The block and its heads are duralumin, motor type: V-shaped, camber 90 degrees. Power - 282-304 hp. from. Weight - 225 kg.
Gasoline injection - single-point injection SPFI, ignition coil - for each spark plug. Compression ratio 10,5. Timing drive - belt.
Consumption: AI-95 on average 12 liters, oils (5W30, 5W40, 0W30, 0W40) - up to 80 g / 100 km of run.

Cooling of the motor is liquid.

Modifications

3UZ-FE modifications were installed on Lexus and Toyota cars. There are 3 models of the motor in terms of power: 282/290/304 hp. from. In 2003, a complete set appeared paired with a 6-speed automatic transmission, which helped to reduce gas mileage.

Where is the engine number

Like the Toyota 1UZ-FE power unit, which served as the prototype for the 3UZ-FE, this engine has a number stamped in the front of the block from above, on a horizontal platform in the camber between the rows of cylinders.

Engine problems

Typical 3UZ-FE engine problems:

increased consumption of oil, coolant - a consequence of the block collapse by 90º;
noise under the block head cover: the timing belt is stretched, the valve clearances are violated - they are adjusted after every 10-15 thousand kilometers;
the timing belt may break with bending of the valves, it is necessary to regularly monitor the condition of the belt;
poor attachment of flaps that change the geometry of the intake, parts of which can enter the engine, creating scoring.

Performing routine maintenance will help prevent costly repairs due to a broken drive belt. Filling the engine with oil - 5,1 liters, taking into account the filling of the filter. You need to change the lubricant after 10 thousand kilometers, and the standard resource for the timing system is 100 thousand.

Tuning 3UZ-FE

There are several options for increasing the power at the third node:

Installing the Eaton M90 compressor (when installing this compressor in the drain, you don't even need an intercooler). It is not necessary to reflash the ECU, although if you do this work, it will also give some gain. As a result, with this whale, you can get 300-340 hp. at the exit.
Installation of turbines. For example, there is a TTC Performance turbo kit that allows you to inflate the knot to 600 hp. But the price of such kits is usually huge - more than $ 20000. The undoubted advantage of ready-made turbo kits is that no modifications to the system are required, everything fits “Bolt on”.

The 3UZ-FE engine was installed on cars of the model company of the same name: