Toyota 3UZ
Toyota 3UZ-FE Engine
Toyota 3UZ engine specs
| Manufacturer | Tahara Plant |
| Also called | Toyota 3UZ |
| Production | 2000-2010 |
| Cylinder block alloy | Aluminum |
| Configuration | V8 |
| Valvetrain | DOHC 4 valves per cylinder |
| Piston stroke, mm (inch) | 82.5 (3.25) |
| Cylinder bore, mm (inch) | 91 (3.58) |
| Compression ratio | 10.5 |
| Displacement | 4292 cc (261.9 cu in) |
| Power output | 207 kW (282 HP) at 5,600 rpm 213 kW (290 HP) at 5,600 rpm 223 kW (304 HP) at 5,600 rpm |
| Torque output | 417 Nm (307 lb·ft) at 3,500 rpm 434 Nm (320 lb·ft) at 3,400 rpm 441 Nm (325 lb·ft) at 3,400 rpm |
| Redline | – |
| HP per liter | 65.7 67.6 70.8 |
| Fuel type | Gasoline |
| Weight, kg (lbs) | – |
| Fuel consumption, L/100 km (mpg) -City -Highway -Combined |
for Lexus LS430 17.5 (13) 8.9 (26) 11.4 (20) |
| Turbocharger | Naturally aspirated |
| Oil consumption , L/1000 km (qt. per miles) |
up to 1.0 (1 qt. per 750 miles) |
| Recommended engine oil | 0W-30 5W-30 5W-40 10W-30 10W-40 |
| Engine oil capacity, L (qt.) | 5.1 (5.4) |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Normal engine operating temperature, °C (F) | – |
| Engine lifespan, km (miles) -Official information -Real |
– 400,000+ (250,000) |
| Tuning, HP -Max HP -No life span loss |
500+ – |
| The engine is installed in | Lexus GS 430 Lexus LS 430 / Toyota Celsior Lexus SC 430 / Toyota Soarer Toyota Crown Majesta |
Toyota 3UZ-FE engine reliability, problems and repair
3UZ-FE appeared in 2000 with the aim to replace 1UZ-FE and produced together with 4.7-liter 2UZ. The 3UZ cylinder block is the same as at 1UZ, aluminum 90 ° V8 with cast iron sleeves. On this motor cylinder bore increased to 91 mm. As the result walls became thinner. New pistons, lightweight forged connecting rods with weight 581 gr. and the length 146 mm used on 3UZ. Cylinder head gaskets have been modified. Heads of the cylinder block were also updated, diameters of inlet and outlet ports increased. Also applied variable valve timing system VVTi on intake camshafts and camshafts were changed. The cylinder head bolts changed they became stronger. Variable intake system ACIS and new filters used on 3UZ-FE and changed the exhaust manifold. Also used electronic throttle body, modified fuel system, engine cooling system, applied other iridium spark plugs and new ignition coil. Firing order on 3UZ-FE: 1-8-4-3-6-5-7-2. The stock size of fuel injectors of Toyota 3UZ-FE engines is 275 cc/min.
Camshafts are set in motion by the timing belt. Replacing of timing belt should be every 50,000-60,000 miles of mileage (90,000-100,000 km).
The motor 3UZ-FE installed on premium class cars, mainly the Lexus brands. In 2006 3UZ began to replace by new 4.6-liter 1UR engine. Process of generational change finally ended in 2010.
Toyota 3UZ engine problems and malfunctions
As well as all Toyota UZ, 3UZ engines are very reliable and the extremely durable. In case of regular high-quality service and using a high-quality engine oil and gasoline, it has no constructive disadvantages. 3UZ will pass more than 300,000 miles of mileage (500,000 km) without overhaul.
Toyota 3UZ engine tuning
3UZ Supercharger. Turbo
The way to increase the power 3UZ are the same as on the 1UZ-FE. Click HERE to know, what performance parts need to buy for this. The main difference is in the thinner of cylinder walls, it can prevent you from getting really impressive numbers. For creation of the most powerful engine it will be better to buy 1UZ-FE.
