Chrysler EGH Specifications
| Engine Model: Chrysler EGH |
| Engine Type: 4-cycle 6-cylinder OHV 12-valve liquid-cooled gasoline |
| Total Displacement: 230.5 cu.in (3.77 L) |
| Rated Engine Power: 150-215 hp (112-160 kW) at 5000 rpm |
| Fuel System Type: Sequential multi-point fuel injection |
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The Chrysler EGH engine is a 3.8-liter, naturally
aspirated, 60-degree V6 gasoline powerplant. Serving as the larger-displacement
derivative of the 3.3L EGA engine, it was engineered as a durable, high-torque
workhorse for front-wheel-drive vans and later found acclaim in the Jeep
Wrangler JK. Produced from 1990 to 2011 at Chrysler’s Trenton, Michigan engine
plant, the EGH features a cast-iron block with aluminum cylinder heads and a
pushrod valvetrain.
It is widely recognized for its longevity, with many units exceeding 370,000 km
(230,000 mi) when properly maintained, though it is noted for modest power
output relative to its displacement and elevated fuel consumption. The engine’s
design emphasizes reliability and low-end torque, making it well-suited for the
heavy minivans and off-road vehicles it powered.
Engine Type: 60° V6, gasoline, naturally aspirated.
Valvetrain: OHV (Overhead Valve / Pushrod), 12 valves (2 per cylinder) with
hydraulic roller lifters.
Displacement: 3,778 cc (230.5 cu.in).
Bore x Stroke: 96.0 mm x 87.0 mm (3.78 in x 3.43 in).
Compression Ratio: 8.9:1 or 9.0:1, early models from 1990-2000.
Compression Ratio: 9.6:1, later variants (post-2000).
Fuel System: Sequential multi-point fuel injection (MPFI).
Ignition System: Electronic distributorless ignition with coil pack.
Engine Management: Sequential fuel injection with electronic spark control.
Emissions: Euro 2/3 for early variants, Euro 4 for later models (2008 onward).
Power Output:
Early models (1990-2000): 150-180 hp (112-134 kW) @ 4,400-4,800 rpm.
Later models (2000-2011): 193-215 hp (142-160 kW) @ 5,000-5,200 rpm.
Torque Output:
Early models: 275-290 Nm (203-214 lb-ft) @ 3,200-3,600 rpm.
Later models: 305-332 Nm (225-245 lb-ft) @ 4,000 rpm.
Material: Cast iron with thick main bearing webbing for
structural rigidity.
Design: Deep-skirt, 60-degree V configuration with a cross-bolted main bearing
design.
Cylinders: Six, machined directly into the block.
Crankshaft: Nodular cast iron with eight counterweights.
Connecting Rods: Forged steel, fracture-split design in later iterations.
Pistons: Cast aluminum alloy with a low-friction coating.
Main Bearings: 4-bolt mains, with the center main featuring thrust washers.
Material: Aluminum alloy, cross-flow design.
Valve Configuration: 2 valves per cylinder, overhead valve arrangement.
Valve Train: Single, in-block camshaft driving hydraulic roller lifters, tubular
pushrods, and rocker arms.
Valve Diameter (Intake): 46.9 mm (1.85 in) approx.
Valve Diameter (Exhaust): 38.1 mm (1.50 in) approx.
Valve Stem Diameter: 8.0 mm (0.315 in).
Camshaft: Single, located in the center of the engine block.
Cam Drive: Heavy-duty silent timing chain, designed for long service intervals.
Valve Seats: Powder metal, induction-hardened.
System Type: Sequential multi-port fuel injection
(MPFI) with returnless system on later models. Injectors: High-impedance,
top-feed injectors. Fuel Pressure: 339-379 kPa (49-55 psi) for early models;
later returnless systems operate at variable pressures. Fuel Rail: Stainless
steel with integrated pressure regulator on early systems.
Throttle Body: Cast aluminum with integrated idle air control (IAC) motor and
throttle position sensor (TPS). Intake Manifold: Early models used aluminum;
post-2002 models utilized a composite plastic (nylon) manifold to reduce weight
and costs. Fuel Requirement: 87 octane (R+M/2) or AИ-92 minimum.
System Type: Full-pressure, force-feed with gear-type
oil pump.
Oil Pump: Positive displacement, mounted to the front of the crankshaft.
Oil Capacity (with filter):
4.0 liters (4.2 qt) for early model installations
4.7-5.7 liters (5.0-6.0 qt) depending on vehicle platform and oil cooler
presence
Recommended Oil Viscosity:
10W-30 for pre-2005 models
5W-20 for 2005-2011 models
Oil Cooler: Optional, integrated with the oil filter adapter on some
applications.
Crankcase Ventilation: Positive Crankcase Ventilation (PCV) system.
Oil Pressure: Minimum 138 kPa (20 psi) at idle; 276-414 kPa (40-60 psi) at
operating speed.
System Type: Pressurized, closed-loop with belt-driven
water pump. Water Pump: Centrifugal type with cast iron housing. Thermostat:
Wax-pellet type, 88°C - 95°C (190°F - 203°F) opening temperature depending on
application. Coolant Capacity (Engine only): 8.5-9.5 liters (9.0-10.0 qt) for
standard cooling systems.
Total System Capacity: 11.0-12.5 liters (11.6-13.2 qt) for minivan applications
with rear heater cores. Coolant Type: Ethylene glycol-based, HOAT (Hybrid
Organic Acid Technology) specification. Radiator: Aluminum core with plastic
tanks, cross-flow design. Cooling Fan: Electric, controlled by engine control
module (ECM).
Electrical System: 12-volt, with 120-amp alternator
(higher output available for minivan applications).
Starter Motor: Permanent magnet, gear-reduction type.
Exhaust System: Cast iron exhaust manifolds with dual catalytic converters on
most applications.
Engine Mounts: Hydraulic mounts used on transverse applications to reduce
vibration.
Timing Cover: Aluminum alloy, housing the timing chain and water pump.
Engine Weight (dry): 159 kg (350 lb)
Overall Length: 610 mm (24.0 in)
Overall Width: 640 mm (25.2 in)
Overall Height: 660 mm (26.0 in)
Oil Change Interval: 5,000-8,000 km (3,000-5,000 mi)
for conventional oil; up to 12,000 km (7,500 mi) for synthetic oil under normal
conditions. Timing Chain Inspection: No specified replacement interval; inspect
if noise or performance issues occur. Coolant Replacement Interval: 80,000 km
(50,000 mi) or 5 years.
Spark Plug Type: Resistor type, platinum-tipped (OE: NGK V-Power or equivalent).
Spark Plug Gap: 1.52 mm (0.060 in) for most applications. Spark Plug Replacement
Interval: 48,000 km (30,000 mi) for standard plugs; 160,000 km (100,000 mi) for
platinum-tipped plugs.
Air Filter Replacement: 32,000 km (20,000 mi) under normal conditions; more
frequent in dusty environments. Idle Speed: Controlled by ECM, non-adjustable.
Engine Lifespan: 375,000-420,000 km (233,000-261,000 mi) with proper
maintenance.
Cylinder Head Bolts (M12): 34 Nm (25 lb-ft)
Connecting Rod Cap Bolts: 27 Nm (20 lb-ft)
Main Bearing Cap Bolts (M10): 54 Nm (40 lb-ft)
Intake Manifold Bolts: 23 Nm (17 lb-ft)
Exhaust Manifold Nuts: 23 Nm (17 lb-ft)
Camshaft Sprocket Bolt: 75 Nm (55 lb-ft)
Crankshaft Damper Bolt: 175 Nm (129 lb-ft) for early models
Crankshaft Damper Bolt: 200 Nm (148 lb-ft) for later models
Spark Plugs: 27 Nm (20 lb-ft)
Oil Pan Bolts: 23 Nm (17 lb-ft)
Water Pump Bolts: 23 Nm (17 lb-ft)
Valve Rocker Arm Shaft Bolts: 23 Nm (17 lb-ft)
Flywheel/Flexplate Bolts: 95 Nm (70 lb-ft)
The Chrysler EGH engine was utilized across a broad
range of Chrysler, Dodge, and Plymouth vehicles from 1990 to 2011.
Chrysler Town and Country (1991-2010)
Chrysler Grand Voyager (1995-2010)
Chrysler Voyager (1995-2007)
Chrysler New Yorker (1991-1993)
Chrysler Imperial (1990-1993)
Chrysler Pacifica (2003-2008)
Dodge Caravan / Grand Caravan (1991-2010)
Dodge Dynasty (1990-1993)
Plymouth Voyager / Grand Voyager (1991-2000)
Jeep Wrangler (JK) (2007-2011)
Volkswagen Routan (2008-2011)
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