Chevrolet L14 Specifications
| Engine Model: Chevrolet L14 |
| Engine Type: 4-cycle inline 4-cylinder DOHC 16-valve liquid-cooled gasoline |
| Total Displacement: 85.4 cu.in (1.39 L) |
| Rated Engine Power: 94-95 Hp (69-70 kW) at 6300 rpm |
| Fuel System Type: Multi-point fuel injection (MPI) |
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The Chevrolet L14 is a 1.4-liter, inline four-cylinder
engine that became a mainstay in GM’s compact vehicle lineup during the 2000s.
Utilizing a dual overhead camshaft (DOHC) design with four valves per cylinder,
this engine was engineered to deliver a balance of adequate power for urban
commuting and respectable fuel efficiency.
It employs multi-point fuel injection (MPI) for precise fuel delivery. Known for
its robust construction and straightforward maintenance requirements, the L14
engine provides a dependable power source for popular models such as the Aveo
and Lacetti.
Type: Inline 4-cylinder, naturally aspirated
Engine Code: L14 (85CUL4)
Displacement: 1399 cc (85.4 cu.in)
Bore: 77.9 mm (3.07 in)
Stroke: 73.4 mm (2.89 in)
Compression Ratio: 9.5:1
Valvetrain: DOHC, 4 valves per cylinder (16 valves total)
Maximum Power: 94-95 hp (69-70 kW) @ 6200-6300 rpm
Maximum Torque: 130-131 Nm (96 lb-ft) @ 3400-4400 rpm
Fuel System: Multi-point fuel injection (MPI)
Firing Order: 1-3-4-2
The cylinder block is constructed from cast iron,
providing a rigid foundation and durability. It features an open-deck design to
aid in cooling efficiency around the cylinders. The block houses five main
crankshaft bearings for robust support of the rotating assembly. The engine is
designed with a wet sump lubrication system integrated into the lower crankcase.
The cylinder head is manufactured from lightweight
aluminum alloy to reduce overall engine weight. It incorporates a dual overhead
camshaft (DOHC) arrangement, with each camshaft acting directly on bucket
tappets.
There are four valves per cylinder - two intake and two exhaust - optimizing
airflow into and out of the combustion chambers. The valvetrain utilizes
hydraulic lash adjusters, eliminating the need for manual valve clearance
adjustments throughout the engine’s life.
Fuel delivery is managed by an electronic multi-point
fuel injection (MPI) system. This setup uses a separate fuel injector for each
cylinder, positioned in the intake manifold runner near the intake port. The
system operates under high pressure supplied by an in-tank fuel pump.
An electronic control unit (ECU) governs the injector opening times and ignition
timing based on data from sensors such as the mass airflow sensor, oxygen
sensor, and throttle position sensor, ensuring optimal combustion efficiency and
emissions control.
The lubrication system is a wet-sump design, utilizing
a gear-type oil pump mounted on the crankshaft. The pump draws oil from the sump
and circulates it through a full-flow oil filter before distributing it to
critical engine components, including the crankshaft bearings, connecting rods,
camshafts, and hydraulic lifters. Proper lubrication is maintained by a pressure
relief valve that regulates oil pressure throughout the operating range.
Engine temperature is regulated by a water-cooled
system. A belt-driven water pump circulates coolant through passages within the
cylinder block and cylinder head. The thermostat maintains the optimal operating
temperature by controlling coolant flow to the radiator.
Heat is dissipated from the coolant as it passes through the radiator core, with
an electric cooling fan assisting airflow during low-speed or idle conditions to
maintain consistent thermal regulation.
The engine utilizes a distributorless ignition system
with individual ignition coils, either a coil-on-plug or coil-near-plug
configuration, managed directly by the ECU for precise spark timing.
Timing Drive: The camshafts are driven by a timing belt
(toothed rubber belt) requiring periodic inspection and replacement according to
the maintenance schedule. The belt drives the exhaust camshaft, with a short
secondary chain or belt connecting the exhaust to the intake camshaft.
Exhaust System: The exhaust manifold is integrated with a catalytic converter to
reduce harmful emissions. The system includes oxygen sensors positioned before
and after the catalyst to monitor combustion efficiency and maintain proper
air-fuel ratios.
Engine Weight (dry): 110-115 kg (242-254 lbs)
Engine Length: 580 mm (22.8 in)
Engine Width: 640 mm (25.2 in)
Engine Height: 670 mm (26.4 in)
Engine Oil Capacity (with filter): 3.8 liters (4.0
quarts)
Recommended Oil Viscosity: 5W-30 or 5W-40
Coolant Capacity: Approx. 6.0 liters (6.3 quarts)
Spark Plug Gap: 1.0-1.1 mm (0.039-0.043 in)
Timing Belt Replacement Interval: 60,000-90,000 km (37,000-56,000 miles)
Valve Clearance: Hydraulic lash adjusters (self-adjusting)
Cylinder Head Bolts: 25 Nm (18 lb-ft) + 90° + 90° + 90°
Connecting Rod Caps: 25 Nm (18 lb-ft) + 30° + 15°
Main Bearing Caps: 50 Nm (37 lb-ft) + 45° + 15°
Spark Plugs: 25 Nm (18 lb-ft)
Camshaft Bearing Caps: 10 Nm (7 lb-ft)
Oil Pan Bolts: 10 Nm (7 lb-ft)
Chevrolet Aveo / Kalos (2002-2012)
Chevrolet Lacetti / Optra (2004-2013)
Chevrolet Nubira / Daewoo Lacetti (2003-2010)
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