The 1UZ-FE engine has 8 cylinders in a V-arrangement at a bank angle of 90° The 1UZ-FE features aluminum cylinder block with a five-bearings crankshaft and two aluminum heads with two camshafts (DOHC) and four valves per cylinder (32 in total). Until 1994 the Toyota 1UZ-FE engine is equipped with Multi-port fuel injection (MFI) system, and after 1994 it used Sequential multi-point fuel injection (SFI). The latest engine versions (after 1997) were equipped with a VVTi (Variable Valve Timing) system for the intake camshafts.
Cylinder bore and piston stroke are 87.5 mm (3.44 in) and 82.5 mm (3.25 in), respectively. Compression ratio rating is 10.0:1 (1989-1994), 10.4:1 (1994-1997) and 10.5:1 (after 1997).
The Toyota 1UZ-FE engine produced from 259 PS (191 kW; 256 HP) at 5,400 rpm to 300 PS (221 kW; 296 HP) at 6,000 rpm of maximum power and from 333 N·m (34 kg·m, 245.4 ft·lb) at 4,000 rpm to 420 N·m (42.8 kg·m, 309.5 ft·lb) at 4,600 rpm of peak torque depending on year and vehicle model.
The breakdown of the engine code is as follows:
- 1 – 1st generation engine
- UZ – Engine family
- F – Economy narrow-angle DOHC
- E – Multi Point Fuel Injection
GENERAL INFORMATION
| Engine Specifications | |
| Engine code | 1UZ-FE |
| Layout | Four stroke, V8 |
| Fuel type | Gasoline (petrol) |
| Production | 1989-2004 |
| Displacement | 4.0 L, 3,968 cc (242.1 cu in) |
| Fuel system | Before 1994: Multi-port fuel injection (MFI) After 1994: Sequential multi-point fuel injection (SFI) |
| Power adder | None |
| Power output | From 259 PS (191 kW; 256 HP) at 5,400 rpm to 300 PS (221 kW; 296 HP) at 6,000 rpm |
| Torque output | From 333 N·m (34 kg·m, 245.4 ft·lb) at 4,000 rpm to 420 N·m (42.8 kg·m, 309.5 ft·lb) at 4,600 rpm |
| Firing order | 1-8-4-3-6-5-7-2 |
| Dimensions (L x W x H): | – |
| Weight | – |
VEHICLE APPLICATIONS
| Model | Years Produced |
| Toyota Celsior | 1989–2000 |
| Toyota Crown | 1989–2002 |
| Toyota Crown Majesta | 1989–2002 |
| Toyota HiAce HiMedic Ambulance | 1989–2004 |
| Toyota Soarer | 1991–2000 |
| Toyota Aristo | 1992–2000 |
| Lexus LS 400 | 1989–2000 |
| Lexus SC 400 | 1991–2000 |
| Lexus GS 400 | 1992–2000 |
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