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| FZ engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Toyota |
| Production | 1992–2008 |
| Layout | |
| Configuration | Inline-6 |
| Displacement | 4.5 L (4,477 cc) |
| Cylinder bore | 100 mm (3.94 in) |
| Piston stroke | 95 mm (3.74 in) |
| Valvetrain | DOHC4 valves x cyl. |
| Compression ratio | 9.0:1 |
| Combustion | |
| Fuel system |
|
| Fuel type | Petrol |
| Cooling system | Water-cooled |
| Output | |
| Power output |
|
| Torque output |
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| Chronology | |
| Predecessor | Toyota F engine |
TheToyota FZ engine was a 24-valve, 4.5 L (4,477 cc) DOHCstraight-6internal combustion engine manufactured by Toyota to replace theF-series engine. It was used primarily in SUVs because of its large displacement, smoothness, ruggedness and torque.
The engine displaced 4.5 L (4,477 cc) with a bore and stroke measuring 100 mm × 95 mm (3.94 in × 3.74 in), respectively and a 9.0:1 compression ratio; the head used Toyota's narrow-angleoverhead camshafts for betterfuel economy.[1] The 1FZ had only two variants available: the 1FZ-F and the 1FZ-FE. The only significant difference between the two was the inclusion ofelectronic fuel injection on the 1FZ-FE, whereas the 1FZ-F used a carburetor.[2]
The 1FZ-F produced 188 hp (140 kW) at 4400 rpm and 268 lb⋅ft (363 N⋅m) at 2800 rpm; its fuel injected counterpart produced 212 hp (158 kW) at 4600 rpm and 275 lb⋅ft (373 N⋅m) at 3200 rpm.
Starting in 1998, the fuel injected version (1FZ-FE) was updated in certain non-US markets. This version of the engine received many updates over the previous version such as a redesigned head, more compact pistons, updated throttle body, an improved intake manifold with longer intake runners, 4 nozzle fuel injectors to improve fuel atomization and direct ignition (via a wasted spark set-up with three dual outlet coils); the engine pictured here is that variant discernible by theintake manifold and lack ofdistributor. This version of the 1FZ-FE produced 240 hp (179 kW) at 4600 rpm and 300 lb⋅ft (407 N⋅m) at 3600 rpm on 91 Octane Fuel (RON) without acatalytic converter.[citation needed]
Also, a de-rated LPG version was built for the 7FG/7FZ series forklifts. Called 1FZ-E it produced 63 kW (84 hp) at 2350 rpm and 294 N⋅m (217 lbf⋅ft) at 1200 rpm[3]
The 1FZ-F and -FE were used in the following vehicles: