Opel E16NZ, E18NVR engines
Content
Opel E16NZ and E18NVR engines have approximately the same structural arrangement of components and operate on the same principle.
Opel E16NZ and E18NVR engines: a brief history
Atmospheric gasoline-powered engines with a capacity of 1.6 and 1.8 liters were manufactured at the main Opel assembly plant from 1987 to 1993. Officially, the engines of these series were installed only on the first generation Opel Vectra A. The Opel E16NZ and E18NVR engines can be found on sedan and 5-door hatchback cars.
Despite some structural differences, both motors were produced according to an identical algorithm and have similar weaknesses and factory problems.
In most cases, the Opel E16NZ and E18NVR engines can be freely transferred to the Opel Vectra stock transmission - a minimum set of preparatory measures will be required to reinstall the power unit.
Technical characteristics of engines Opel E16NZ and E18NVR
The Opel E16NZ and E18NVR engines are manufactured on the basis of an in-line 4-cylinder layout, where each cylinder has a pair of valves. The main difference between the power units, in addition to the capacity of the combustion chamber, is the fuel system - in the Opel E16NZ, gasoline is supplied using a single injection, and the E18NVR is made in the classic carburetor version.
| E16NZ | E18NVR | |
|---|---|---|
| Power unit capacity, cc | 1598 | 1796 |
| Maximum power, hp | 75 | 88 |
| Maximum torque, N*m (kg*m) at rev. /min | 127 (13) to 2600 | 143 (15) to 2800 |
| Cylinder diameter, mm | 79 | 84.8 |
| The piston stroke, mm | 81.5 | 79.5 |
| Compression ratio | 9.2 | 9.2 |
| Number of valves per cylinder | 2 | 2 |
| engine's type | 4-cylinder row | 4-cylinder row |
Stable operation of the power units of this line is observed only when refueling with class 5W30 or 5W40 oil. To fully refuel the engine, the Opel E16NZ will need 3.0 and E18NVR - 3.5 liters. The recommended period for replacing the technical fluid will be a run of 15 km, but in practice it is better to completely drain the oil already at around 000 km. These motors do not require a "special" quality of technical fluids, however, a more timely oil change will favorably affect the operational life of the components.
The average fuel consumption of the engine for the Opel E16NZ is 6.6 liters per 100 kilometers on the highway, for the E18NVR - 7.6 liters. In the combined cycle of operation, these power units will require 9.8 and 10.7 liters, respectively. The optimal class of gasoline for refueling is AI-92. In practice, the engines of this model range can also digest the AI-95, however, detonation or valve overheating is possible during engine operation.
The operating life of the Opel E16NZ and E18NVR is 300 km each. With timely maintenance and regular maintenance, the life of component engines can be increased by another 000-50 km.
The design of power units of this class suggests the possibility of major repairs.
The VIN number of the motors is selected in a specialized place on the crankcase cover.
Weaknesses in the design: what problems do the Opel E16NZ and E18NVR have?
The identity of many structural components also influenced the behavior of the Opel E16NZ and E18NVR engines - both engines show almost complete synchronism in the appearance of problems that can be foreseen by the mileage of the power plant. The most typical malfunctions are:
- Speed swimming - that the mono-injector, that the carburetor is controlled by an electronic unit, which autonomously selects the best option for the formation of the air-fuel mixture. If there is a problem in swimming speeds, first of all, it is necessary to check the stability of the computer and, if necessary, reconfigure it.
The only hotel nuance is clogging of carburetors in the Opel E18NVR, which is characterized by a decrease in engine power potential. If the car loses dynamics, then in addition to the quality of the fuel, it is necessary to check the jets and throttle, as well as possible air leakage.
Tuning Opel E16NZ and E18NVR: is it possible?
You can swing the Opel E16NZ and E18NVR engines in terms of power - this requires a standard set of procedures:
- Cold injection installation;
- Exhaust replacement;
- ECU flashing.
Such a set of measures will increase the power to 30 horsepower, which will seriously affect the dynamics of a car with a 30-year history.
With timely maintenance, tuning will not affect the resource.
