The 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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