Le 1NZ et 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. Spécifications techniques
Paramètre
1NZ-FE
2NZ-FE
Déplacement
1497 cc
1298 cc
Alésage × Course
75.0 mm × 84.7 mm
75.0 mm × 73.5 mm
Taux de compression
10.5:1
10.5:1
Train de soupapes
DOHC, 4 valves per cylinder
DOHC, 4 valves per cylinder
Camshaft Control
VVT-i (intake side)
VVT-i (intake side)
Matériel
alliage d'aluminium
alliage d'aluminium
Circuit de refroidissement
Refroidi par eau
Refroidi par eau
Type de carburant
Essence
Essence
3. Numéros OEM et de référence
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. Véhicules 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. Principaux avantages
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. Problèmes courants
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. Notes d'installation
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.
