Engine Opel Z10XEP

The Z10XEP engine is a water-cooled 3-cylinder in-line engine developed by General Motors. The engine power is 60 hp. (44 kW) with an engine displacement of 998 cc (1 liter). The internal combustion engine was covered with a 2-shaft 12-valve cylinder head from Z14XEP adapted for 3 cylinders.

Differs in the presence of a proprietary system for changing the geometry of the intake tract Twinport, which closes half of the intake valves, which is why the engine pulls better at the bottom. At high rpm, the flaps open and the motor runs at full speed. Controls the motor of the Bosch ME7.6.1 / Bosch ME7.6.2 ECU. This engine lends itself to minor tuning. To increase power and accelerate the car, you need to:

  • remove catalyst;
  • install cold inlet;
  • muffle the EGR valve;
  • Reconfigure ECU.

Specifications

Manufacturer Aspern engine plant
Also called Z10XEP
Production years 2003-2009
Cylinder block alloy cast iron
Fuel system injector
Configuration inline
Number of cylinders 3
Valves per cylinder 4
Piston stroke, mm 78.6
Cylinder bore, mm 73.4
Compression ratio 10.5
Displacement, cc 998
Power output, hp 60/5600
Torque output, Nm / rpm 88/3800
Fuel type 95
Euro standards Euro 4
Fuel consumption, L/100 km (for Opel Corsa C)
— city
— highway
— combined
6.9
4.4
5.3
Oil consumption, gr/1000 km up to 600
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 3.0
Oil change interval, km 15000
Engine lifespan, km
— official information
— real

250+

Frequent problems

  • most of the problems arise from the electrical, weak wiring and ECU are to blame;
  • low resource and the timing chain, it may require replacement up to 150,000 km;
  • very often the dampers of the Twinport system are seized and the EGR valve is overgrown with carbon;
  • owners often contact the service to replace the thermostat and oil pump;
  • for an adapted cylinder head, if improperly maintained, the cover fasteners are easily twisted, which requires resharpening of the retainers or a complete replacement of the motor head;
  • the source of an oil leak is usually a pressure sensor and only replacement will help.

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