Engine Opel Z16XEP

The 1.6-liter Opel Z16XEP or LJ7 engine was produced from 2002 to 2009 in Hungary and was installed on most of the concern’s models of its time, such as Astra, Vectra and Zafira. This power unit had a modified version under its own index Z16XE1.

The Z15 family also includes engines: Z16SE, Z16XE, Z16XER, Z18XE and Z18XER.

The engine was installed on:

  • Opel Astra G (T98) in 2002 – 2009; Astra H (A04) in 2004 – 2007;
  • Opel Meriva A (X03) in 2005 – 2009;
  • Opel Vectra C (Z02) in 2005 – 2008;
  • Opel Zafira B (A05) in 2005 – 2007.

Specifications

Production years 2002-2009
Displacement, cc 1598
Fuel system distributed injection
Power output, hp 105
Torque output, Nm 150
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 79
Piston stroke, mm 81.5
Compression ratio 10.5
Features Twinport
Hydraulic lifters no
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.5
Fuel type 95
Euro standards EURO 4
Fuel consumption, L/100 km (for Opel Meriva 2007)
— city
— highway
— combined
8.8
5.5
6.7
Engine lifespan, km ~300 000
Weight, kg 120

Disadvantages of the Z16XEP engine

  • Drivers constantly complain about engine traction failures due to failures of the Twinport system;
  • A little less often, a clogged EGR valve is to blame for the unstable operation of the power unit;
  • The timing belt changes at 150,000 km, but it is better more often, since when it breaks, the valves bend;
  • Low resource here also have: ECU unit, thermostat and ignition module;
  • There are no hydraulic lifters and every 100 thousand km it is necessary to adjust the valve clearances.

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