| FZ engine | |
| Manufacturer: | Toyota |
| Production: | 1993–2008 |
| Predecessor: | Toyota F engine |
| Configuration: | Inline-6 |
| Displacement: | 4477cc |
| Bore: | 1002NaN2 |
| Stroke: | 952NaN2 |
| Valvetrain: | DOHC 4 valves x cyl. |
| Fueltype: | Petrol |
| Coolingsystem: | Water-cooled |
| Power: | 225hp (1FZ-FE 1998-2009) |
| Torque: | 285lbft @ 3600 RPM (1FZ-FE 1998-2009) |
| Compression: | 9.0:1 |
The Toyota FZ engine was a 24-valve, 4477cc DOHC straight-6 internal combustion engine manufactured by Toyota to replace the F-series engine. It was used primarily in SUVs because of its large displacement, smoothness, ruggedness and torque.
The engine displaced 4477cc with a bore and stroke measuring NaNmm, respectively and a 9.0:1 compression ratio; the head used Toyota's narrow-angle overhead camshafts for better fuel 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 of electronic fuel injection on the 1FZ-FE, whereas the 1FZ-F used a carburetor.[2]
The 1FZ-F produced 188hp at 4400 rpm and 268lbft at 2800 rpm; its fuel injected counterpart produced 212hp at 4600 rpm and 275lbft 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 the intake manifold and lack of distributor. This version of the 1FZ-FE produced 240hp at 4600 rpm and 300lbft at 3600 rpm on 91 Octane Fuel (RON) without a catalytic converter.
Also, a de-rated LPG version was built for the 7FG/7FZ series forklifts. Called 1FZ-E it produced 63kW at 2350 rpm and 294Nm at 1200 rpm
The 1FZ-F and -FE were used in the following vehicles: