Toyota MZ engine
| 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 (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. It was Toyota's second V6 engine after the VZ engine family, of which the MZ series succeeded it.
The MZ family is a lightweight V6 engine of an all-aluminium design, using lightweight parts than the previous heavy-duty VZ block engines in an effort to lower production costs and decrease engine and reciprocating weight without sacrificing reliability. Toyota sought to enhance the drivability pattern of the engine (over the 3VZ-FE) 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.
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.
This engine has been phased out in most markets, replaced by variants of the then-new GR series.