Toyota ZZ engine
| Toyota ZZ engine | |
|---|---|
2005 Toyota Corolla S engine | |
| Overview | |
| Manufacturer | Toyota |
| Production | 1997–2008 |
| Layout | |
| Configuration | Straight-4 |
| Displacement | 1.4 L; 85.3 cu in (1,398 cc) 1.6 L; 97.5 cu in (1,598 cc) 1.8 L; 109.5 cu in (1,794 cc) 1.8 L; 109.6 cu in (1,796 cc) |
| Cylinder bore | 79 mm (3.11 in) 82 mm (3.23 in) |
| Piston stroke | 71.3 mm (2.81 in) 81.5 mm (3.21 in) 85 mm (3.35 in) 91.5 mm (3.60 in) |
| Cylinder block material | Aluminium, Cast iron |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl. with VVT-i and VVTL-i (some versions) |
| Compression ratio | 10.0:1, 11.5:1 |
| Combustion | |
| Supercharger | TRD (some versions) |
| Fuel system | Multi-point fuel injection |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Chronology | |
| Predecessor | A engine |
| Successor | ZR engine (for 1ZZ and 2ZZ series) |
The Toyota ZZ engine family is a straight-4 piston engine series. The ZZ series uses a die-cast aluminium engine block with thin press-fit cast iron cylinder liners, aluminium DOHC 4-valve cylinder heads, and chain-driven camshafts. The ZZ family replaced the extremely popular cast-iron block 4A and 7A engines of the preceding A family of engines.
The two 1.8 L members of the family, the 1ZZ and 2ZZ, use different bore and stroke. The former was optimised for economy, with torque emphasised in lower revolutions per minute operating range, while the latter is a "square" design optimised for high-RPM torque, yielding higher peak power.