Opel C14NZ, C14SE engines
Content
These power units were produced at the German plant Bochum plant in Germany. Opel C14NZ and C14SE engines were equipped with such popular models as Astra, Cadet and Corsa. The series was designed to replace the equally popular C13N and 13SB.
The motors entered mass production in 1989 and for 8 years remained one of the most popular for A, B and C class cars. Due to the fact that these atmospheric power units did not have much power, installing them on large and heavy vehicles was not practical.
These engines are distinguished by their structural simplicity and high-quality materials for manufacturing, due to which the working life of the units is more than 300 thousand km. Manufacturers provided for the possibility of boring the cylinder by one size, which makes it possible to significantly extend its performance without much difficulty. Most parts of C14NZ and C14SE are unified. The differences lie in the camshafts and the design of the manifolds. As a result, the second motor is 22 hp more powerful and has increased torque.
Specifications C14NZ and C14SE
| C14NZ | C14 SE | |
|---|---|---|
| Engine displacement, cc | 1389 | 1389 |
| Power, hp | 60 | 82 |
| Torque, N*m (kg*m) at rpm | 103 (11) to 2600 | 114 (12) to 3400 |
| Fuel used | Gasoline AI-92 | Gasoline AI-92 |
| Fuel consumption, l / 100 km | 6.8 – 7.3 | 07.08.2019 |
| engine's type | Inline, 4-cylinder | Inline, 4-cylinder |
| Engine information | single injection, SOHC | port fuel injection, SOHC |
| Cylinder diameter, mm | 77.5 | 77.5 |
| Number of valves per cylinder | 2 | 2 |
| Power, hp (kW) at rpm | 90 (66) to 5600 | 82 (60) to 5800 |
| Compression ratio | 09.04.2019 | 09.08.2019 |
| The piston stroke, mm | 73.4 | 73.4 |
Common faults C14NZ and C14SE
Each engine of this series has a simple design, while being made of high-quality metals. Therefore, the majority of typical malfunctions are related to the excess of the working resource and the natural wear and tear of components.
In particular, the most common breakdowns of these power units are considered to be:
- depressurization of seals and gaskets. In the process of long-term operation, these components lose their elasticity, which leads to undercutting of working fluids;
- failed lambda probe. This failure is often due to corrosion of the exhaust manifold, as a result of which even the installation of a new part does not always lead to a correction of the situation. A new lambda probe is damaged by rust bumps during direct installation on a car;
- malfunctions of the fuel pump located in the car tank;
- wear of candles and armored wires;
- wear of the crankshaft liners;
- failure or incorrect operation of the mono-injection;
- broken timing belt. Although in these power units, this failure does not lead to deformation of the valves, it is necessary to replace the belt every 60 thousand km. km of run.
In general, each unit of this series has high reliability and service life. Its main problem is relatively low power.
In order to extend the life of the motor, it is necessary to carry out regular maintenance and oil changes at least every 15 thousand km.
To replace the engine, you can use engine oils:
- 0W-30
- 0W-40
- 5W-30
- 5W-40
- 5W-50
- 10W-40
- 15W-40
Features of the operation of the motor
For owners of cars on which the C14NZ power unit is installed, dynamic driving and good acceleration dynamics remain inaccessible, so most of them sooner or later think about tuning. The easiest option is to install the cylinder head and manifolds from the more powerful C14SE model, or complete replacement. With this, you can win twenty extra horses and increase torque, while slightly increasing fuel consumption.
If you want to significantly increase the power of the car and not bother with various tuning methods, it would be wise to purchase a C16NZ contract engine, which is as similar as possible in size, but has much more significant dynamic characteristics.
Applicability of C14NZ and C14SE
In the period from 1989 to 1996, many Opel cars were equipped with these power units. In particular, the most popular models that were equipped with these power units can be called:
- Cadet E;
- Astra F;
- Race A and B;
- Tiger A
- Combo B.
For everyone who is thinking about replacing the engine and buying a used one on hand or a contract equivalent from Europe, we recommend that you do not forget to carefully check the serial number. In Opel cars, it is located on the plane of the block, on the front wall, near the probe.
It should be smooth and not jump up and down.
Otherwise, you run the risk of acquiring a stolen or broken internal combustion engine and in the future you will face certain difficulties and problems during maintenance.
