Chrysler PowerTech engine
Encyclopedia
The PowerTech was a new engine family for Chrysler
, and was not based on the Chrysler A engine
as existing Chrysler V8s were. A 4.7 L V8 came first, fitted in the Jeep Grand Cherokee
, and a 3.7 L V6 version debuted in 2002 for the Jeep Liberty
. The PowerTech V6 and V8 were direct replacements for Chrysler's LA
family in the early 2000s, and were also used in the Dodge Ram
. They were not used in any cars, but were reserved for truck and SUV use. They are also known as Next Generation Magnum in Dodge applications.
Chrysler also used the "PowerTech" name on other engines used in Jeep vehicles, including some later units of the 2.5 L I4
and 4.0 L I6 designs inherited from AMC after buying that company out in 1987, and the 2.4 L Neon
four-cylinder engine. The PowerTech V6 and V8 engines are produced at the Mack Avenue Engine Complex
in Detroit, Michigan
. E85
compatible versions of some PowerTech engines were developed and used in numerous Chrysler vehicles.
The 4.7-liter version was the first of this family, appearing in the 1999 Jeep Grand Cherokee
. The displacement is 287 cubic inches (4698 cc) with a bore of 3.66 in (93 mm) and a stroke of 3.405 in (86.5 mm). It has a cast iron block and aluminum heads with two valves per cylinder. It uses a chain-driven overhead camshaft
. It originally produced 235 hp and 295 ft·lbf
(400 N·m
) of torque
. The 2010 4.7l has 2 valves and 2 spark plugs per cylinder and puts out 302 hp and 329 ft·lbf. Dodge has claimed that it has increased compression ratio and improved cylinder head port flow, the 4.7 L V8 is available with three transmissions.
The PowerTech was on the Ward's 10 Best Engines
list for 1999.
Applications:
Applications:
The EKG is a 3.7 L V6 version built in Detroit, Michigan
. It displaces 226.0 cubic inches (3701 cc).The bore is 3.66 in (93 mm) and stroke is 3.57 in (90.7 mm). It is a 90° V engine
like the V8, with SOHC 2-valve heads. It utilizes a counter-rotating balance shaft mounted between the cylinder banks to deal with vibration problems of the 90-degree V6 design, as well as use a 30-degree split pin crankshaft to fire the cylinders every 120 degrees. Output is 210 hp at 5200 rpm with 235 ft·lbf (319 Nm) of torque at 4000 rpm. It has a cast iron engine block and aluminum SOHC cylinder heads. It uses SFI fuel injection
, has roller followers, and features fracture-split forged powder metal connecting rods and an assembled reinforced plastic intake manifold.
Applications:
PowerTech is a Neon engine variant. The 2.4 L 4-cylinder engine has 150 hp and 165lb.-ft (224 nm). This engine was available in the 2002-2005 Jeep Liberty
, but was discontinued when Jeep introduced the Compass
and Patriot
small crossovers. Those two vehicles also received 2.4 L I4s as base engines, but these were of the GEMA
architecture and should not be confused with the Neon/PowerTech engine of the same displacement.
Chrysler
Chrysler Group LLC is a multinational automaker headquartered in Auburn Hills, Michigan, USA. Chrysler was first organized as the Chrysler Corporation in 1925....
, and was not based on the Chrysler A engine
Chrysler A engine
The Chrysler A engine is a small-block V8 automobile engine from Chrysler Corporation. It was produced from 1956 until 1967, when it was replaced by the wedge-head LA engine. The A engine's combustion chambers are polyspherical, and it is not related to Chrysler's Hemi engines of the same era.The...
as existing Chrysler V8s were. A 4.7 L V8 came first, fitted in the Jeep Grand Cherokee
Jeep Grand Cherokee
The Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
, and a 3.7 L V6 version debuted in 2002 for the Jeep Liberty
Jeep Liberty
Inspired by styling from the Dakar and Jeepster concept cars, the Liberty was intended as a replacement for the discontinued Jeep Cherokee . Three trim levels were initially offered; the top end Limited, a more rugged looking Renegade and the base Sport. All were made available with either 2WD or 4WD...
. The PowerTech V6 and V8 were direct replacements for Chrysler's LA
Chrysler LA engine
The LA engines are a family of pushrod OHV 90° V-block gasoline engines built by Chrysler Corporation and factory-installed in passenger vehicles, trucks and vans, commercial vehicles, marine and industrial applications from 1964 through 2003...
family in the early 2000s, and were also used in the Dodge Ram
Dodge Ram
The Dodge Ram is a full-size pickup truck manufactured by the Chrysler Group LLC. As of late 2010, it has been sold under the Ram Trucks brand. Previously, Ram was part of the Dodge lineup of light trucks...
. They were not used in any cars, but were reserved for truck and SUV use. They are also known as Next Generation Magnum in Dodge applications.
Chrysler also used the "PowerTech" name on other engines used in Jeep vehicles, including some later units of the 2.5 L I4
AMC Straight-4 engine
The American Motors Corporation straight-4 engine was used by a number of AMC, Jeep, and Dodge vehicles from 1984-2002.*For an outline of all engines used by AMC see -Development:...
and 4.0 L I6 designs inherited from AMC after buying that company out in 1987, and the 2.4 L Neon
Chrysler Neon engine
The Chrysler 1.8, 2.0, and 2.4 are inline-4 engines designed originally for the Dodge and Plymouth Neon compact car. These engines were loosely based on their predecessors, the Chrysler 2.2 & 2.5 engine, sharing the same 87.5 mm bore...
four-cylinder engine. The PowerTech V6 and V8 engines are produced at the Mack Avenue Engine Complex
Mack Avenue Engine Complex
Mack Avenue Engine Complex is a Chrysler automobile factory in Detroit, Michigan. The first portion of the factory was purchased by Chrysler in 1953 and converted into a stamping plant. The factory floor space covers . It was the original production site for the Dodge Viper, from 1992 through...
in Detroit, Michigan
Detroit, Michigan
Detroit is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people. As the seat of Wayne County, the city of Detroit is the largest city in the U.S. state of Michigan and serves as a major port on the Detroit River...
. E85
E85
E85 is an abbreviation for an ethanol fuel blend of up to 85% denatured ethanol fuel and gasoline or other hydrocarbon by volume. E85 is commonly used by flex-fuel vehicles in the US, Canada, and Europe. Some of the benefits of E85 over conventional gasoline powered vehicles include the potential...
compatible versions of some PowerTech engines were developed and used in numerous Chrysler vehicles.
4.7
Jeep Grand Cherokee
The Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
. The displacement is 287 cubic inches (4698 cc) with a bore of 3.66 in (93 mm) and a stroke of 3.405 in (86.5 mm). It has a cast iron block and aluminum heads with two valves per cylinder. It uses a chain-driven overhead camshaft
Overhead camshaft
Overhead cam valvetrain configurations place the engine camshaft within the cylinder heads, above the combustion chambers, and drive the valves or lifters in a more direct manner compared to overhead valves and pushrods...
. It originally produced 235 hp and 295 ft·lbf
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....
(400 N·m
Newton metre
A newton metre is a unit of torque in the SI system. The symbolic form is N m or N·m, and sometimes hyphenated newton-metre...
) of torque
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....
. The 2010 4.7l has 2 valves and 2 spark plugs per cylinder and puts out 302 hp and 329 ft·lbf. Dodge has claimed that it has increased compression ratio and improved cylinder head port flow, the 4.7 L V8 is available with three transmissions.
The PowerTech was on the Ward's 10 Best Engines
Ward's 10 Best Engines
Ward's 10 Best Engines is an annual list of the ten "best" automobile engines available in the U.S. market, that are selected by Ward's AutoWorld magazine. The list was started in 1994, and has been drawn every year since then....
list for 1999.
Applications:
- 1999–2009 Jeep Grand CherokeeJeep Grand CherokeeThe Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
- 2000–2011 Dodge DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50...
- 2000–2009 Dodge DurangoDodge DurangoThe Dodge Durango is a full-size crossover SUV from the Dodge division of Chrysler. It was introduced in 1998 as a mid-size SUV, and as a replacement for the Ramcharger discontinued in the North American market in 1993, and was redesigned to full-size for 2004....
- 2002–present Dodge Ram 1500
- 2006–2009 Jeep CommanderJeep CommanderThe Jeep Commander is a mid size SUV produced from 2006 to 2010. The first use of the Commander name on a passenger vehicle was the popular Studebaker Commander which was produced from the 1920s through 1966....
- 2007–2009 Chrysler AspenChrysler AspenThe Chrysler Aspen is a full-size sport utility vehicle from Chrysler. Launched for the 2007 model year, the Aspen is essentially a rebranded Dodge Durango SUV...
4.7 HO/Magnum
A "High-Output" version of the 4.7 L PowerTech engine, producing 265 hp and 330 ft·lbf (448 N·m) of torque, was introduced in 2002, first appearing in the Jeep Grand Cherokee Overland.Applications:
- 2002–2004 Jeep Grand CherokeeJeep Grand CherokeeThe Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
- 2005–2007 Dodge DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50...
- 2002–2007 Dodge Ram 1500
- 2006–2007 Mitsubishi RaiderMitsubishi RaiderThe Mitsubishi Raider is a pickup truck from Mitsubishi Motors that debuted in the fall of 2005 as a 2006 model for the United States market and is based largely on the Dodge Dakota...
2008 Revisions
The 2008 Dodge Dakota and Ram pickup trucks, Dodge Durango and Chrysler Aspen SUV's, Jeep Grand Cherokee, and Jeep Commander came with a Corsair version of the FFV 4.7 L engine, with dual spark plugs per cylinder, a new slant / squish combustion system design, and 9.8:1 compression, raising power to 290 hp and 320-334 ft·lbf of torque. See Allpar's page on the latest 4.7 L.3.7 EKG
Detroit, Michigan
Detroit is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people. As the seat of Wayne County, the city of Detroit is the largest city in the U.S. state of Michigan and serves as a major port on the Detroit River...
. It displaces 226.0 cubic inches (3701 cc).The bore is 3.66 in (93 mm) and stroke is 3.57 in (90.7 mm). It is a 90° V engine
V engine
A V engine, or Vee engine is a common configuration for an internal combustion engine. The cylinders and pistons are aligned, in two separate planes or 'banks', so that they appear to be in a "V" when viewed along the axis of the crankshaft...
like the V8, with SOHC 2-valve heads. It utilizes a counter-rotating balance shaft mounted between the cylinder banks to deal with vibration problems of the 90-degree V6 design, as well as use a 30-degree split pin crankshaft to fire the cylinders every 120 degrees. Output is 210 hp at 5200 rpm with 235 ft·lbf (319 Nm) of torque at 4000 rpm. It has a cast iron engine block and aluminum SOHC cylinder heads. It uses SFI fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....
, has roller followers, and features fracture-split forged powder metal connecting rods and an assembled reinforced plastic intake manifold.
Applications:
- 2002–present Dodge Ram 1500
- 2004–2011 Dodge DakotaDodge DakotaThe Dodge Dakota is a mid-size pickup truck from Chrysler's Ram division. From its introduction through 2009, it was marketed by Dodge. The first Dakota was introduced in 1986 as a 1987 model alongside the redesigned Dodge Ram 50...
- 2004–2009 Dodge DurangoDodge DurangoThe Dodge Durango is a full-size crossover SUV from the Dodge division of Chrysler. It was introduced in 1998 as a mid-size SUV, and as a replacement for the Ramcharger discontinued in the North American market in 1993, and was redesigned to full-size for 2004....
- 2007–2011 Dodge NitroDodge NitroThe Dodge Nitro is a compact SUV from the Dodge division of Chrysler. Launched for the 2007 model year, the Nitro shares its platform with the second generation Jeep Liberty. It is assembled at the Toledo North Assembly Plant in Toledo, Ohio. The Jeep facility is part of an automobile complex...
- 2002–present Jeep LibertyJeep LibertyInspired by styling from the Dakar and Jeepster concept cars, the Liberty was intended as a replacement for the discontinued Jeep Cherokee . Three trim levels were initially offered; the top end Limited, a more rugged looking Renegade and the base Sport. All were made available with either 2WD or 4WD...
- 2005–2010 Jeep Grand CherokeeJeep Grand CherokeeThe Jeep Grand Cherokee is a Mid-size SUV produced by the Jeep division of Chrysler. While some other SUVs were manufactured with body on frame construction, the Jeep Grand Cherokee has always used a unibody chassis.- Development :...
- 2006–2010 Jeep CommanderJeep CommanderThe Jeep Commander is a mid size SUV produced from 2006 to 2010. The first use of the Commander name on a passenger vehicle was the popular Studebaker Commander which was produced from the 1920s through 1966....
- 2006–2010 Mitsubishi RaiderMitsubishi RaiderThe Mitsubishi Raider is a pickup truck from Mitsubishi Motors that debuted in the fall of 2005 as a 2006 model for the United States market and is based largely on the Dodge Dakota...
2.4
The 2.4 L I4Straight-4
The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....
PowerTech is a Neon engine variant. The 2.4 L 4-cylinder engine has 150 hp and 165lb.-ft (224 nm). This engine was available in the 2002-2005 Jeep Liberty
Jeep Liberty
Inspired by styling from the Dakar and Jeepster concept cars, the Liberty was intended as a replacement for the discontinued Jeep Cherokee . Three trim levels were initially offered; the top end Limited, a more rugged looking Renegade and the base Sport. All were made available with either 2WD or 4WD...
, but was discontinued when Jeep introduced the Compass
Jeep Compass
The Jeep Compass is a compact crossover SUV introduced for the 2007 model year. The Jeep Compass, along with the Patriot both slot below the Jeep Wrangler as Jeep's entry-level sport utility vehicles, and is one of Jeep's first crossover SUVs....
and Patriot
Jeep Patriot
The Jeep Patriot is a compact crossover SUV introduced in early 2007 for the 2007 model year by the Jeep marque of Chrysler. It debuted publicly in April 2006 at the New York Auto Show and slots between the Compass and Liberty in the Jeep lineup...
small crossovers. Those two vehicles also received 2.4 L I4s as base engines, but these were of the GEMA
Global Engine Manufacturing Alliance
The Global Engine Manufacturing Alliance LLC, or GEMA, is a manufacturing arm of Global Engine Alliance LLC, which was a joint venture of Chrysler, Mitsubishi Motors, and Hyundai Motor Company for developing a line of shared engines...
architecture and should not be confused with the Neon/PowerTech engine of the same displacement.