Chrysler PowerTech engine
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The PowerTech is a new engine family for Chrysler Corporation and is not based on the Chrysler A engine like almost every other Chrysler V8. A 4.7 liter V8 came first for the Jeep Grand Cherokee, and a 3.7 liter 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.
Note that Chrysler uses the "Power Tech" name on a number of different engines:
- This family of V6 and V8
- The older AMC Straight 6 engine (from 1996 onwards)
- The 2.4 liter Neon engine for trucks
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4.7
Jeep_Grand_Cherokee_WJ_47_Power_Tech_V8.jpg
The 4.7 liter version was the first of this family, appearing in the 1999 Jeep Grand Cherokee. The displacement is 4,701 cc (287 in³) with a bore of 3.66 in (93 mm) and a stroke of 3.4 in (86.5 mm). It produces 235 horsepower (172 kW) and 295 lb.ft (400 Nm). It has a cast iron block and aluminum "almost Hemi" heads with two valves per cylinder. It uses a chain-driven overhead camshaft and 2 valves per cylinder.
The PowerTech was on the Ward's 10 Best Engines list for 1999. A high output version, producing 250 hp (186 kW), was introduced for 2005.
Applications:
- 1999– Jeep Grand Cherokee
- 2000– Dodge Dakota
- 2005– Dodge Durango
3.7
Chrysler_PowerTech_3.7.jpg
The EKG is a 3.7 L (3701 cc) version built in Detroit, MI. Bore is 93 mm and stroke is 90.8 mm. It is a 90° V engine like the V8, with SOHC 2-valve heads. Output is 215 hp (160 kW) at 5200 RPM with 235 ft.lbf (319 Nm) of torque at 4000 RPM. It has an 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:
- 2004-2005 Dodge Dakota
- 2005 Jeep Grand Cherokee
- Dodge Durango
- Dodge Ram
- Jeep Liberty
2.4
The 2.4 liter I4 PowerTech is actually a Neon engine variant.
See also
- Allpar's page (http://allpar.com/mopar/37.html)