Chrysler EDV Specifications
| Engine Model: Chrysler EDV |
| Engine Type: 4-cycle inline 4-cylinder DOHC 16-valve liquid-cooled gasoline |
| Total Displacement: 148.2 cu.in (2.43 L) |
| Rated Engine Power: 180-230 Hp (134-172 kW) at 6400 rpm |
| Fuel System Type: Sequential multi-point fuel injection |
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The Chrysler EDV is a 2.4-liter, turbocharged inline-4
engine that represents the high-performance pinnacle of the Chrysler 1.8, 2.0,
and 2.4 engine family, often referred to as the Neon or Powertech engine series.
Produced from 2002 to 2009, it was engineered to deliver substantial power gains
over its naturally aspirated counterparts, primarily through the addition of
forced induction and a robust internal structure. The EDV, along with its
derated variant EDT, was specifically developed for sport-compact applications,
most famously powering the Dodge Neon SRT-4 and the Chrysler PT Cruiser GT.
The engine’s architecture is defined by a durable cast iron block and an
aluminum, dual overhead camshaft (DOHC) cylinder head featuring a pent-roof
combustion chamber design and four valves per cylinder. A factory turbocharger,
lowered compression ratio, and a suite of heavy-duty internal components -
including forged steel connecting rods and piston oil squirters - enabled it to
achieve significant horsepower and torque figures, establishing it as a
celebrated engine in the tuner and enthusiast community.
The Chrysler EDV engine is distinguished by its specific engine code, which
denotes a factory-turbocharged configuration. It is a water-cooled, inline
four-cylinder, four-stroke gasoline engine with a displacement of 2,429 cc
(148.2 cu.in). The bore and stroke measure 87.5 mm (3.44 in) and 101.0 mm (3.98
in), respectively, giving it an undersquare design (bore smaller than stroke)
that favors torque production.
The compression ratio is set at 8.1:1, a significant reduction compared to the
naturally aspirated versions of this engine family, which operate at ratios
around 9.4 to 9.8:1. This lower ratio is essential for accommodating the forced
induction and preventing detonation. The weight of the fully dressed engine
(including all accessories, turbocharger, and manifolds) is 160-170 kg (350-375
lbs).
The engine management system utilizes sequential multi-point fuel injection
(SMPI). Power output varies depending on the vehicle application and factory
calibration. In the 2003-2005 Dodge Neon SRT-4, the engine produced 215-230 hp
(160-172 kW) and 245-250 lb-ft (332-339 Nm) of torque. For the Chrysler PT
Cruiser GT, output was rated at 215-220 hp (160-164 kW) with 245 lb-ft (332 Nm)
of torque. A derated version, the EDT, produced approximately 180 hp (134 kW)
and 285 Nm (210 lb-ft) for use in some PT Cruiser models. The engine features a
forced induction system centered around a reverse-rotation Mitsubishi
TD04LR-16Gk turbocharger.
The cylinder block is constructed from cast iron, a
material chosen for its high strength, durability, and resistance to distortion
under high cylinder pressures and elevated temperatures associated with
turbocharging. It is an inline-four configuration with the cylinders arranged in
a single plane. The block incorporates a bedplate design - a structural lower
crankcase section - which adds rigidity to the assembly and supports the
crankshaft.
This perimeter wall with transverse webbings minimizes noise, vibration, and
harshness (NVH) while ensuring the bottom end remains stable at high engine
speeds. The engine utilizes a wet sump lubrication system with a gerotor oil
pump driven directly from the crankshaft’s front end.
A critical feature integrated into the block is the inclusion of piston oil
squirters. These jets are strategically positioned to spray a stream of engine
oil onto the underside of the pistons, providing direct cooling to the piston
crowns. This feature is vital for managing the increased thermal loads generated
during turbocharged operation, preventing piston overheating and detonation.
The cylinder head is manufactured from aluminum alloy,
which reduces overall engine weight and provides excellent heat dissipation. It
utilizes a DOHC (Dual Overhead Camshaft) valvetrain configuration with four
valves per cylinder, totaling 16 valves. The combustion chambers are machined
into a 48-degree pent-roof design, which creates an efficient combustion
environment that optimizes flame propagation, allows for a high compression
ratio in a forced-induction context, and facilitates the use of centrally
located spark plugs. This design is a direct contributor to the engine’s ability
to produce high specific output.
The valvetrain is equipped with hydraulic lifters (lash adjusters) that operate
on roller rocker arms. This hydraulic self-adjusting system eliminates the need
for periodic valve clearance adjustments. The roller rocker arms reduce friction
between the camshaft lobes and the valve train, improving efficiency and
reducing wear. The timing belt drives both camshafts and the water pump; given
the engine’s interference design, a belt failure results in catastrophic
valve-to-piston contact. The timing belt replacement interval is a critical
maintenance item, recommended every 100,000 km (approximately 60,000-100,000
miles depending on the model year and market).
The engine is equipped with a sequential multi-point
fuel injection (SMPI) system. In this setup, a fuel injector is dedicated to
each cylinder and is located in the intake port of the cylinder head. The
“sequential” designation means each injector fires individually in time with its
cylinder’s intake stroke, rather than all at once or in groups.
This provides precise fuel metering, improved atomization, and better control
over the air-fuel mixture for each cylinder. This precision enhances power
output, fuel efficiency, and emissions control, and is well-suited to the
demands of a turbocharged engine with varying manifold pressures.
The lubrication system is a wet sump design, where oil
is stored in a pan at the bottom of the engine. The system is pressurized by a
crankshaft-driven gerotor oil pump, which is valued for its compact design and
efficient, consistent oil flow. The total oil capacity is 4.7 liters (5.0
quarts).
The recommended oil specification is 5W-30 synthetic, meeting Chrysler material
standard MS-6395. The use of synthetic oil is advised for its superior thermal
stability, resistance to breakdown at high operating temperatures, and improved
flow at low temperatures, all of which are crucial for protecting the
turbocharger and piston cooling jets.
The cooling system is water-cooled and pressurized.
Coolant is circulated by a water pump that is driven directly by the timing
belt. The water pump housing is partially cast into the engine block, a design
that aids in packaging and structural integrity.
The total coolant capacity is approximately 6.2 liters. Maintaining the cooling
system in optimal condition is paramount for this engine, as the turbocharger
and piston oil squirters significantly increase thermal load. Overheating is a
known vulnerability if the cooling system is neglected.
The engine is equipped with a reverse-rotation
Mitsubishi TD04LR-16Gk turbocharger. This specific unit is compact, allowing for
quick spool-up and reduced turbo lag, which is essential for the engine’s
responsive character in street applications.
The ignition system is integrated with the engine
control unit (ECU), utilizing a distributorless, direct-fire design with
individual coil packs or a coil-on-plug configuration to ensure reliable spark
under high cylinder pressures.
Crankshaft and Connecting Rods: The engine features a
high-hardness steel crankshaft, which provides the strength necessary to
withstand the torsional forces of a turbocharged engine. The connecting rods are
forged steel, a significant upgrade over the powdered metal rods used in
naturally aspirated versions of the engine family. This construction provides
superior tensile and fatigue strength, enabling them to handle the increased
cylinder pressures associated with high boost levels.
Pistons: The engine utilizes Mahle cast eutectic aluminum alloy pistons. This
specific alloy contains a high percentage of silicon, which reduces thermal
expansion and allows for tighter piston-to-wall clearances, resulting in quieter
operation and improved durability under high thermal loads.
Regular maintenance is critical for the longevity of
the EDV engine. The engine oil and filter should be changed every 5,000-8,000 km
(3,000-5,000 miles) or as dictated by the vehicle’s oil life monitoring system,
using the specified 5W-30 synthetic oil. The timing belt is the most critical
maintenance item; the replacement interval is specified as every 90,000-100,000
miles (approximately 145,000-160,000 km).
Due to the interference design, exceeding this interval risks belt failure,
which results in severe engine damage requiring a complete cylinder head rebuild
or engine replacement. The coolant should be replaced every 5 years or 160,000
km (100,000 miles). Spark plugs should be inspected and replaced at recommended
intervals, usually between 48,000-80,000 km (30,000-50,000 miles), depending on
the plug type.
Cylinder Head Bolts: 30 Nm (22 lb-ft).
Main Bearing Cap Bolts (Bedplate): 20 Nm (15 lb-ft).
Connecting Rod Cap Bolts: 20 Nm (15 lb-ft).
Camshaft Bearing Cap Bolts: 12 Nm (105 lb-in).
Spark Plugs: 20 Nm (15 lb-ft).
The Chrysler EDV turbo engine was utilized in several
performance-oriented vehicles from 2002 to 2009.
Dodge Neon SRT-4 (2003-2005): This was the highest-profile application, where
the engine produced up to 230 hp and 250 lb-ft of torque in its final
configuration. It was paired exclusively with a 5-speed manual transmission.
Chrysler PT Cruiser GT (2003-2006): The EDV engine in this application produced
215-223 hp (depending on the year and market) and 245-250 lb-ft of torque. It
was available with both a 5-speed manual and a 4-speed automatic transmission.
Chrysler PT Cruiser (EDT variant, 2002-2009): A derated version of the engine,
coded EDT, was used in some PT Cruiser models, producing approximately 180 hp.
It served as a lower-output turbocharged option.
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