 | This article needs additional citations for verification. (October 2017) |
| Toyota MZ engine | |
|---|---|
 1MZ-FE engine in a Toyota Windom | |
| Overview | |
| Manufacturer | Toyota Motor Corporation |
| Production | 1993–2014 |
| Layout | |
| Configuration | V6 |
| Displacement | 2.5 L (2,496 cc) 3.0 L (2,994 cc) 3.3 L (3,310 cc) |
| Cylinder bore | 87.5 mm (3.44 in) 92 mm (3.62 in) |
| Piston stroke | 83 mm (3.27 in) 69.2 mm (2.72 in) |
| Cylinder block material | Aluminium alloy |
| Cylinder head material | Aluminium alloy |
| Valvetrain | DOHC 4 valves x cyl. |
| Combustion | |
| Supercharger | TRD kit (in some versions) |
| Fuel system | Multi-port fuel injection |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 194–242 hp (145–180 kW; 197–245 PS) |
| Torque output | 180–242 lb⋅ft (244–328 N⋅m) |
| Chronology | |
| Predecessor | Toyota VZ engine |
| Successor | Toyota GR engine |
The Toyota MZ engine family is a piston V6 engine series. The MZ series has an aluminium engine block and aluminium alloy DOHC cylinder heads. The cylinders are lined with cast iron, and is of a closed deck design (no open space between the bores). The engine is a 60 degree V6 design. It uses multi-port fuel injection (MFI), four valves per cylinder, a one-piece cast camshaft and a cast aluminium intake manifold. The MZ family is a lightweight V6 engine of an all-aluminium design, using lighter weight parts than the heavier duty VZ block engines in an effort to lower production costs, decrease engine weight, and decrease reciprocating weight without sacrificing reliability. Toyota sought to enhance the drivability pattern of the engine (over the 3VZ) at exactly 3000 rpm, since that was the typical engine speed for motors cruising on the highway. The result was less cylinder distortion coupled with the decreased weight of rotating assemblies, smoother operation at that engine speed, and increased engine efficiency.[citation needed]
This engine has been phased out in most markets, replaced by variants of the new GR series.