Specifications of the Opel Z10XEP
| Parameter | Value |
|---|---|
| Engine make | Z10XEP |
| Years of production | 2003 – 2009 |
| Cylinder block material | Cast iron |
| Power system | Injector |
| Type | Ready |
| Number of cylinders | 3 |
| Valves per cylinder | 4 |
| Cylinder diameter | 73.4 mm |
| Piston stroke | 78.6 mm |
| Compression ratio | 10.5 |
| Engine displacement | 998 cm³ |
| Power | 60 hp at 5600 rpm |
| Torque | 88 Nm at 3800 rpm |
| Fuel type | AI-95 |
| Environmental standards | Euro 4 |
| Oil consumption | Up to 600 g/1000 km |
| Engine oil | 5W-30, 5W-40 |
| Oil volume in the engine | 3.0 l |
| Oil change | Every 15,000 km (7500 km recommended) |
| Engine life | 250,000+ km |
Which cars the engine was installed in
| Model | Generation | Years of production |
|---|---|---|
| Opel Corsa | C, D | 2003 – 2009 |
| Opel Agila | 2003 – 2009 |
Design and repair of Opel Z10XEP engine
In August 2003, sales of Agila and Corsa cars with a new 1.0-liter engine, which replaced the Z10XE, began. Opel engineers found the Z14XEP 4-cylinder block too big and cut off one extra cylinder. Inside this small block they put a crankshaft with a slightly reduced piston stroke of 78.6 mm (it was 80.6 mm) and compensated for this by using pistons with a compression height of 24 mm (it was 23 mm). These modifications resulted in a displacement of 1000cc.
This motor was covered with a head from Z14XEP adapted for 3 cylinders. This is a twin-shaft 12-valve cylinder head, 4 valves per cylinder. Inlet valves here have a diameter of 28 mm, exhaust valves are 25 mm, and the diameter of the valve stem is 5 mm. The valves do not require adjustment – hydrocompensators are installed.
The camshafts rotate single-row timing chain designed for the entire life of the car, the real life of the timing chain is not so high and is +/- 100-150 thousand kilometers.
The Z10XEP uses a Twinport intake manifold, which closes half of the intake valves, and the engine pulls better at the bottom. At high revs, the flaps open up and the motor runs at full throttle.
The motor is controlled by a Bosch ME7.6.1/Bosch ME7.6.2 ECU.
In addition to the Z14XEP and Z10XEP, the series of low-volume motors GM Family 0 included a 1.2-liter Z12XEP.
Production of the Z10XEP continued until the end of 2009, after which it was replaced by the A10XEP.
Opel Z10XEP engine problems and disadvantages
- Most of all problems arise on the electrics, weak wiring and ECU unit are to blame
- The chain timing has a low life, it may require replacement up to 150,000 km
- Twinport system flaps get stuck and EGR valve gets fouled
- It is not uncommon for owners to have the thermostat and oil pump replaced
- The source of oil leaks is usually the oil pressure sensor and only replacement will help
Tuning Z10XEP engines
To make your liter motor go a little faster, you need to put a cold intake, remove the catalytic converter, plug the EGR valve and adjust the ECU accordingly. This will give a boost of up to 3-5 hp and allow you to go as fast as you can.
ENGINE RATING: 4