El 1NZ y 2NZ engines are part of Toyota’s NZ family of inline 4-cylinder gasoline engines, known for their compact design, fuel efficiency, and durability.
1NZ-FE: 1.5L, DOHC, 16-valve, VVT-i
2NZ-FE: 1.3L, DOHC, 16-valve, VVT-i
The cylinder head is made from lightweight aluminum alloy, with cross-flow design and optimized intake/exhaust port geometry for improved combustion efficiency.
2. Especificaciones técnicas
Parámetro
1NZ-FE
2NZ-FE
Desplazamiento
1497 cc
1298 cc
Diámetro × Carrera
75.0 mm × 84.7 mm
75.0 mm × 73.5 mm
Relación de compresión
10.5:1
10.5:1
Tren de válvulas
DOHC, 4 valves per cylinder
DOHC, 4 valves per cylinder
Camshaft Control
VVT-i (intake side)
VVT-i (intake side)
Material
aleación de aluminio
aleación de aluminio
Sistema de enfriamiento
refrigerado por agua
refrigerado por agua
Tipo de combustible
Gasolina
Gasolina
3. OEM y números de referencia
1NZ-FE Cylinder Head:
OEM: 11101-23040, 11101-23041, 11101-23042
Casting No.: 1NZ
2NZ-FE Cylinder Head:
OEM: 11101-23020, 11101-23021, 11101-23022
Casting No.: 2NZ
4. Vehículos compatibles
1NZ-FE Applications:
Toyota Vios / Yaris / Belta (2002–present)
Toyota Corolla (select Asian markets)
Toyota Echo / Platz (2000–2005)
Toyota Probox / Succeed (2002–present)
2NZ-FE Applications:
Toyota Yaris (2000–2012)
Toyota Platz (2000–2005)
Toyota Vios 1.3L (2002–2012)
Toyota Corolla (select models)
5. Ventajas clave
Lightweight aluminum construction for improved fuel economy.
VVT-i compatibility for better torque and efficiency.
OEM-standard machining ensures perfect sealing and fitment.
Optimized coolant passages to reduce hot spots and prevent warping.
Multi-vehicle fitment increases versatility for distributors.
6. Problemas comunes
Overheating leading to head warping.
Valve stem seal wear causing oil consumption.
Cracks between valve seats in extreme conditions.
Camshaft bearing wear in high-mileage engines.
7. Notas de instalación
Always check cylinder block flatness before installation.
Replace head gasket and bolts with OEM or equivalent quality.
Follow Toyota’s torque sequence and specifications.
Ensure proper VVT-i timing setup during reassembly.
Flush cooling system and replace coolant after installation.
