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The cause of the problem was found to be one head bolt hole that was drilled too shallow at the factory, meaning the head bolt bottomed out and could never seal properly. In 1998, a thicker, multi-layer steel head gasket was introduced that eliminated this problem. General Specifications. Cylinder Configuration: In-line 4
The Jeep Tornado engine was the first post-World War II U.S.-designed mass-produced overhead cam (OHC) automobile engine. [1] The 230.5 cu in (3.78 L) hemi-headed straight-six was introduced in mid-year 1962, and replaced the flathead "6-226" Willys Super Hurricane that was in use since 1954.
In 1986, the head underwent a minor revision: the head bolts were increased from 7/16 to 1/2 inch. From 1997 until 2002, it was marketed as the "PowerTech I4." [ 7 ] It was produced through 2002 for the Jeep Wrangler , as well as for the Dodge Dakota pickup that also featured the AMC/Jeep-designed four-cylinder as its standard engine on regular ...
Engine bay of a 1993 Jeep Grand Cherokee with 4.0 L The 5 millionth Jeep 4.0 engine produced on the "Greenlee Block Line" dated June 15, 2001 The 242 cu in (4.0 L) engine was developed by AMC in just 26 months using many off-the-shelf components while featuring, among others, additional strength, improved combustion chamber, port setup, and cam ...
The gross power and torque outputs decreased to 72 hp (54 kW; 73 PS) and 112 lb⋅ft (152 N⋅m), respectively, when the engine had a 6.9:1 compression ratio. Bore and stroke dimensions were the same as the L-head engine at 3 + 1 ⁄ 8 x 4 + 3 ⁄ 8 inches, giving 134.2 cu in (2,199 cc). [3] The F4-134 was introduced in 1950 in the Jeep Truck. [4]
Torque (net) 105 lb⋅ft (142 N⋅m) at 2,800 rpm; It was used in the AMC Gremlin, AMC Spirit, and AMC Concord, The only Jeep this engine was used in was the 1979 Jeep DJ (Dispatcher or Postal Delivery). In the DJ5G, it was mated only to a 3-speed A904 automatic transmission with a VW/Audi pattern bellhousing.