Opel Z14XE

Opel Z14XEThe Opel Z14XE is a 1.4 l (1,389 cc, 84.76 cu-in) straight-four 4-stroke natural aspirated gasoline small-displacement engine developed by Opel, at the time a subsidiary of General Motors. The engine was manufactured from 2000 to 2004.

The Z14XE uses a cast-iron engine block with a cast-iron crankshaft and aluminum head with dual belt-driven overhead camshafts (DOHC) and four valves per cylinder (16 valves in total). This is the Euro 4 version of the X14XE engine. The engine is equipped with a sequential multi-port fuel injection system, EGR system, and electronic throttle for reduced emissions.

Bore and stroke are 77.6 mm (3.06 in) and 73.4 mm (2.89 in), respectively. The compression ratio rating is 10.5:1. The Z14XE engine produces 90 PS (66 kW; 88 HP) at 6,000 rpm of maximum horsepower and 125 N·m (12.7 kg·m, 92.1 ft·lb) at 4,000 rpm of peak torque.

The breakdown of the engine code is as follows:

  • Z – Euro 4 engine
  • 14 – 1.4 Liter displacement
  • X – Comression ratio from 10 to 11.5:1
  • E – Multi Point Fuel Injection system

General information

Engine Specifications
Engine codeOpel Z14XE
LayoutFour stroke, Inline-4 (Straight-4)
Fuel typeGasoline (petrol)
Displacement1.4 L, 1,389 cm3 (84.76 cu in)
Fuel systemMultipoint fuel injection (MFI)
Power adderNone
Power output90 PS (66 kW; 88 HP) at 6,000 rpm
Torque output125 N·m (12.7 kg·m, 92.1 ft·lb) at 4,000 rpm
Firing order1-3-4-2
Dimensions (L x W x H):

Cylinder block

The engine used a cast-iron semi-closed deck cylinder block and a cast-iron crankshaft five-bearings supported system. Bore and stroke are 77.6 mm (3.06 in) and 73.4 mm (2.89 in). Compression ratio rating is 10.5:1.

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:10.5:1
Cylinder bore:77.6 mm (3.06 in)
Piston stroke:73.4 mm (2.89 in)
Number of piston rings (compression / oil):2 / 1
Cylinder inner diameter (standard):77.575-77.585 mm (3.0541-3.0545 in)
Piston skirt diameter (standard):77.555-77.565 mm (3.0533-3.0537 in)
Piston pin outer diameter:17.997-18.000 mm (0.7085-0.7087 in)
Piston ring side clearance:Top0.020-0.040 mm (0.0008-0.0016 in)
Second0.040-0.060 mm (0.0016-0.0024 in)
Oil0.010-0.030 mm (0.0004-0.0012 in)
Piston ring end gap:Top0.30-0.50 mm (0.0118-0.0197 in)
Second0.30-0.50 mm (0.0118-0.0197 in)
Oil0.40-1.40 mm (0.0157-0.0551 in)
Crankshaft main journal diameter:54.980-54.997 mm (2.1646-2.1652 in)
Crankpin diameter:42.971-42.987 mm (1.6918-1.6924 in)

Cylinder head

The cylinder head is made of an aluminum alloy. The Z14XE engine has belt-driven dual overhead camshafts. Valves are actuated via roller finger followers with hydraulic tappets.

Cylinder head (after 2006)
Valve Arrangement:DOHC, belt driven
Valves:16 (4 valves per cylinder)
Valve head diameter:INTAKE31.0 mm (1.2205 in)
EXHAUST27.5 mm (1.0827 in)
Valve length:INTAKE101.65 mm (4.002 in)
EXHAUST102.46 mm (4.034 in)
Valve stem diameter:INTAKE5.995-5.970 mm (0.236-0.235 in)
EXHAUST5.935-5.950 mm (0.2337-0.2343 in)

Head tightening procedure and torque specs:

  • Step 1: 25 Nm (2.5 kg·m, 18.4 ft·lb)
  • Step 2: Turn all bolts 90°
  • Step 3: Turn all bolts 90°
  • Step 4: Turn all bolts 90°

Maintenance data

Compression pressure
Standard:15.0 bar (15.3 kg/m2; 218 psi)
Minimum:12.0 bar (12.2 kg/m2; 174 psi)
Compression differential limit between cylinders:1.0 bar (1 kg/m2; 15 psi)
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 5W-30, 5W-40, 10W-30, 10W-40
Oil type ACEA A2-96 / A3-96
Engine oil capacity (Refill capacity) With filter change: 3.25 L (3.43 US. qt, 2.86 Imp. qt.)
Oil change interval, km (miles)30,000 (18,000)
Ignition system
Spark plugBosch FLR8LDCU
Spark plug gap1.0 mm (0.0394 in)
Spark plug tightening torque25 Nm (2.55 kg·m; 18.45 ft·lb)

Vehicle applications

ModelYears Produced
Opel Corsa C 1.4i 16v2000-2003
Opel Astra G 1.4i 16v2000-2004
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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