Opel Z14XE

Opel Z14XE engineThe Opel Z14XE is a 1.4 L (1,389 cc, 84.76 cu·in) straight-four natural aspirated four-stroke liquid-cooled internal combustion vertical gasoline engine, manufactured by Opel, a subsidiary of General Motors since 2000 to 2004. This engine is Euro 4 version of the X14XE.

The updated version introduced in 2000, with the lighter cast-iron cylinder block. The Opel Z14XE has an aluminum cross-flow cylinder head, dual overhead camshafts driven by a toothed belt, and 16 valves (4 per cylinder). This engine used a sequential multi-port fuel injection system, a gas recirculation system (EGR), and electronic throttle for reduced emissions.

The Z14XE engine produced 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 maximum 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 model Z14XE
Engine type 4-stroke, DOHC, straight-4
Displacement 1,389 cm3, (84.76 cu·in)
Max. horsepower 90 PS (66 kW; 88 HP) at 6,000 rpm
Max. torque 125 N·m (12.7 kg·m, 92.1 ft·lb) at 4,000 rpm
Cooling system Liquid-cooled
Lubricating system Pressure feed
Ignition system Electronic ignition system without distributor
Fuel system Sequential multi-port fuel injection
Firing order: 1-3-4-2

Cylinder Block

It has a 77.6 mm (3.06 in) cylinder bore and 73.4 mm (2.89 in) piston stroke. Compression ratio rating is 10.5:1. The engine used a cast-iron cylinder block with a cast steel crankshaft, each piston is fitted with two compression rings and a single oil ring.

Cylinder block
Cylinder block alloy: Cast-iron
Compression ratio: 10.5:1
Cylinder bore: 77.6 mm (3.06 in)
Piston stroke: 73.4 mm (2.89 in)
Cylinder internal diameter (standard): 77.575-77.585 mm (3.0541-3.0545 in)
Piston skirt outer diameter (standard): 77.555-77.565 mm (3.0533-3.0537 in)
Number of piston rings (compression / oil): 2/1
Connecting rod center distance: 129.75 mm (5.1083 in)
Piston pin diameter: 17.997-18.000 mm (0.7085-0.7087 in)
Side clearance (Top): 0.020-0.040 mm (0.0008-0.0016 in)
Side clearance (Second): 0.040-0.060 mm (0.0016-0.0024 in)
Side clearance (Oil): 0.010-0.030 mm (0.0004-0.0012 in)
Ring end gap (Top): 0.30-0.50 mm (0.0118-0.0197 in)
Ring end gap (Second): 0.30-0.50 mm (0.0118-0.0197 in)
Ring end gap (Oil): 0.40-1.40 mm (0.0157-0.0551 in)
Ring width (Top): 1.2 mm (0.0472 in)
Ring width (Second): 1.5 mm (0.0591 in)
Ring width (Oil): 3.0 mm (0.1181 in)
Number of main bearings: 5
Crankshaft main journal diameter: 54.980-54.997 mm (2.1646-2.1652 in)
Crankpin journal diameter: 42.971-42.987 mm (1.6918-1.6924 in)
Crankshaft center distance: 36.7 mm (1.445 in)

Cylinder head

The Z14XE engine has an aluminium head with 4 valves per cylinder (16 in total) and dual camshafts driven by the crankshaft via a timing belt. Intake valves are 31.0 mm (1.2205 in) in diameter, and the exhaust valves are 27.5 mm (1.0827 in) in diameter. The engine used hydraulic tappets.

Cylinder head
Cylinder head alloy: Aluminium
Valve arrangement: DOHC, belt driven
Valves: 4 per cylinder, (16 valves in total)
Head height: 134.9-135.1 mm (5.311-5.3189 in)
Valve head diameter (INTAKE): 31.0 mm (1.2205 in)
Valve head diameter (EXHAUST): 27.5 mm (1.0827 in)
Valve length (INTAKE): 101.51-101.93 mm (3.9964-4.013 in)
Valve length (EXHAUST): 100.55-100.97 mm (3.9587-3.9752 in)
Valve steam diameter (INTAKE): 5.995-5.970 mm (0.236-0.235 in)
Valve steam diameter (EXHAUST): 5.935-5.950 mm (0.2337-0.2343 in)

Service Data

The ACEA A2-96 / A3-96 oil with a viscosity of 5W-30, 5W-40, 5W-50 is recommended for the Z14XE, refilling oil capacity is 3.25 L (3.43 US. qt, 2.86 Imp. qt.). The recommended spark plug is Bosch FLR8LDCU with 1.0 mm (0.0394 in) spark plug gap.

Maintenance data
Idle speed: 700-900 rpm
Compression pressure
Standard: 15.0 bar (15.3 kg/cm2; 218 psi)
Minimum: 12.0 bar (12.2 kg/cm2; 174 psi)
Compression differential limit between cylinders: 1.0 bar (1.0 kg/cm2; 15 psi)
Oil type: ACEA A2-96 / A3-96
Recommended oil: 5W-30, 5W-40, 5W-50
Oil capacity: 3.25 L (3.43 US. qt, 2.86 Imp. qt.)
Fuel system
Type: Sequential multi-port fuel injection
Ignition system
Type: Electronic ignition system without distributor
Spark plug: Bosch FLR8LDCU
Spark plug gap: 1.0 mm (0.0394 in)
Spark plug torque: 25 N·m (2.5 kg·m, 18.4 ft·lb)

Applications

Model Years Produced
Opel Corsa C 1.4i 16v 2000-2003
Opel Astra G 1.4i 16v 2000-2004

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