Jeep Wrangler
October 29th, 2008
From 1987 until 1992 the Wrangler/YJ was built in Brampton, Ontario, Canada. It was then built in the Toledo South Assembly plant until mid-2006, after which the plant was slowly torn down. The Wrangler is currently produced at Jeep's Toledo North Assembly plant in Toledo, Ohio.
The Wrangler name was not used in Canada, as it was a trim level of Chevrolet pickup in that market. Instead, 1987 to 1995 models were sold as YJ, and 1997 to 2006 models were sold as TJ. The model designations of YJ and TJ are used throughout the world in the Jeep enthusiast community to differentiate which model is being spoken of instead of using the more ambiguous term "Wrangler".
The Jeep YJ, sold as the Wrangler, replaced the much-loved but slower-selling Jeep CJ in 1987 and was built in Brampton, Ontario, Canada until the plant closed on April 23, 1992. It was a new design with a wider wheelbase, slightly less ground clearance, a galvanized body and more comfort. The YJ also had a leaf spring suspension similar to that of the CJ, however, the springs were wider, and the YJs sported trackbars and swaybars for added handling. YJs are easily identifiable by their rectangular headlights, which were a source of controversy when introduced. Despite the new grill, the body is very similar to the CJ7's, and it is interchangeable with some minor modifications. Many CJ7 owners with a rusted body replace them with a newer YJ body, they are almost cosmetically identical and the lines from the nose match up perfectly. 632,231 YJs were built through model year 1995, though YJs were still produced into mid '96 bringing the total production number to 685,071 units.
The YJ used a 2.5 L AMC 150 I4 or optional 4.2 L AMC 258 I6 until 1991. That year, a fuel injected 180 hp (134 kW) 4.0 L AMC 242 variant replaced the 112 hp (84 kW) 4.2 L 258 CID straight-6. The NP207 transfer case was used only in 1987 and replaced by the NP231
The roll cage was extended in 1992 to allow for rear shoulder belts, and anti-lock brakes were added as an option the next year. An automatic transmission option for 4-cylinder Wranglers came in 1994 along with a center high-mounted stop light.
In 1994, the slave cylinder on manual transmissions was moved outside of the transmission's bellhousing to allow for easier replacement, and in 1995 larger U-joints were used.
The 2007 model year brought the complete redesign of the Jeep Wrangler, in both two and four-door models. The TJ platform was replaced by a new JK platform. This next-generation Wrangler was significantly larger than the existing model, with a 2 inch (50.8 mm) longer wheelbase and 3.4 inch (86.4 mm) wider track, though the two door model is actually 2.5 inches shorter in the overall length than the TJ, allowing for better approach and departure angles. With a larger available standard tire size of 32 in, breakover angle is unchanged.
Some Wrangler enthusiasts decried this new vehicle's larger size, claiming that it runs counter to the character of the Wrangler, and is too big to be an effective off-road vehicle. Similar complaints were expressed during previous redesigns. Jeep reportedly sought to cement the Wrangler's position as the marque's most-rugged vehicle as new car-based crossover SUVs took some of Jeep's on-road market share.
JK was introduced at the 2006 North American International Auto Show with past Chrysler group CEO Tom LaSorda driving one up some steps and through a plate glass window, just as Robert Lutz had done at the show in 1992 with the Jeep Grand Cherokee. The JK was first available for purchase with the 2007 model year.
A six-speed manual transmission is standard, with a four-speed automatic transmission offered as an option. The lower two levels have the Jeep Command-Trac NV241 part-time two-speed transfer case with an optional Trac-Loc limited-slip differential, while the Rubicon uses a Rock-Trac version of the NV241 with a 4:1 low range. Electronic locking front- and rear-axles called Tru-loc are also standard on Rubicon models. (rear locker optional on X models)
Stability control is a new safety feature for the JK Wrangler. All versions offer off-road tuned Anti-lock braking system and traction control system with electronic limited slip differential. Standard on the Rubicon trim is a new electronic sway bar disconnect system.
The JK runs almost all vehicle functions other than steering under computer software control. Engine, transmission, and to some extent braking are computer controlled, as are lights and auxiliary systems. This is a first for the Wrangler. As of mid-2007, there have been three safety recalls for software fixes.
A Sunrider convertible soft top is standard equipment. Also available on the JK model is an optional 3-piece modular hardtop. Although the doors can still be removed in traditional Wrangler fashion, power windows and remote power door locks will be offered for the first time in a Wrangler. Another first is an available navigation system. This is the first generation of the Jeep Wrangler to have a change in the tail lamps.
The 2009 model added standard Hill Start Assist (HSA) to prevent rollback on graded surfaces. Trailer Sway Control (TSC) also is available to monitor vehicle movement relative to the intended path and activates the Electronic Stability Program (ESP) if the trailer begins to sway outside set parameters. Additionally, ULEV II emissions replace LEV II emissions on manual transmission equipped vehicles.
The JK series 2007 Wrangler Unlimited was unveiled at the New York Auto Show on April 12, 2006. It is stretched even more than the TJ model, with four doors and 20.6 inches (523 mm) added to the JK Wrangler's 95.4 inch (2423 mm) wheelbase. It is priced near $21,000.
Unlimited has the same engine and transmission choices as a short-wheelbase JK. X and Sahara trims offer an option of 2x4 rear wheel drive. It is the only four door convertible available in the U.S., since the Hummer H1 with optional rag-top is no longer sold as a civilian vehicle.
The Unlimited offers more options and equipment than any previous Wrangler model, including standard electronic stability program and optional seat-mounted side airbags, remote keyless entry, navigation system, and Sirius satellite radio. The navigation and satellite systems are a part of the MyGig Entertainment system that also has a hard drive allowing for the storage of MP3 music files and pictures.
On September 13, 2007, at the Defence Systems & Equipment International trade show, Chrysler LLC unveiled a Wrangler Unlimited version designed for military use dubbed the J8. The unarmored Jeep J8 is equipped with larger brakes, axles and suspension components than the civilian version and has a payload capacity of 1,339 kg (2,952 lb). The J8 also differs from the civilian model by utilizing heavy-duty rear leaf springs for carrying heavier payloads. The Jeep J8 is powered by a 2.8-litre four-cylinder turbo-diesel engine that produces 118 kW (158 hp) and 400 N·m (295 lbf·ft) of torque, providing towing capability of up to 3,500 kg (7,700 lb). The engine is mated to a five-speed automatic transmission. The J8 also features a unique air-intake system with special filtration and a hood-mounted snorkel that enables the J8 to wade in water up to 762 mm (30 in) deep and tackle sandstorm conditions for up to five hours. Available as a two-door with an extended pickup bed for personnel or equipment transport, or a four-door multipurpose vehicle, it may be produced with numerous vehicle-body and seating configurations in either right-hand- or left-hand-drive. Targeted for use by the militaries in overseas markets, the J8 is not available in the United States because it will not meet U.S. emissions requirements. The J8 will be produced in Egypt.
The 2009 model added standard Hill Start Assist (HSA) to prevent rollback on graded surfaces. Trailer Sway Control (TSC) also is available to monitor vehicle movement relative to the intended path and activates the Electronic Stability Program (ESP) if the trailer begins to sway outside set parameters. Additionally, ULEV II emissions replace LEV II emissions on manual transmission equipped vehicles.
Wrangler has become especially popular in the US, where students like to travel on this car, install loud music and tune it up. Something like an American Dream.
Jeep
July 16th, 2008
The first jeep prototype (the Bantam BRC) was built for the Department of the Army by American Bantam in Butler, Pennsylvania, followed by two other competing prototypes produced by Ford and Willys-Overland. The American Bantam Car Company actually built and designed the vehicle that first met the Army's criteria, but its engine did not meet the Army's torque requirements. Plus, the Army felt that the company was too small to supply the number needed and it allowed Willys and Ford to make second attempts on their designs after seeing Bantam's vehicle in action. Some people believe that Ford and Willys also had access to Bantam's technical paperwork.
Quantities (1,500) of each of the three models were then extensively field tested. During the bidding process for 16,000 "jeeps," Willys-Overland offered the lowest bid and won the initial contract. Willys thus designed what would become the standardized jeep, designating it a model MB military vehicle and building it at their plant in Toledo, Ohio.
Like American Bantam, Willys-Overland was a small company and, likewise, the military was concerned about their ability to produce large quantities of jeeps. The military was also concerned that Willys-Overland had only one manufacturing facility: something that would make the supply of jeeps more susceptible to sabotage or production stoppages.
Based on these two concerns, the U.S. government required that jeeps also be built by the Ford Motor Company, who designated the vehicle as model GPW (G = governmental vehicle, P showed the wheelbase, and W = the Willys design). Willys and Ford, under the direction of Charles E. Sorensen (Vice-President of Ford during World War II), produced more than 600,000 jeeps containing their cost slightly above 300 dollars per unit, due to its mass-production system economy. Besides just being a "truck" the jeep was used for many other purposes.
The jeep was widely copied around the world, including in France by Hotchkiss et Cie (after 1954, Hotchkiss manufactured Jeeps under license from Willys), and in Japan by Mitsubishi Motors. There were several versions created, including a railway jeep and an amphibious jeep. As part of the war effort, Jeeps were also supplied to the Soviet Red Army during World War II.During the jeep's service in Korea the name was referred to as "Just Enough Essential Parts" by the troops due to the very basic design.
In the United States military, the jeep has been supplanted by a number of vehicles (e.g. Ford's M151 MUTT) of which the latest is the High Mobility Multipurpose Wheeled Vehicle (HMMWV or "Humvee").
In 1965, Jeep developed the M715 1.25 ton army truck, which served extensively in Vietnam. Today it serves other countries, and is still being produced by Kia under license.
Jeeps have always been known for their abilities off-road, and their popularity endures. Today, the Wrangler is the only light-duty vehicle offered in North America with solid axles front and rear. These axles are known for their durability due to their overall strength and lack of rubber boots to get torn on twigs and rocks. Solid-axled vehicles also generally articulate better, especially when traversing ruts. Even the two wheel drive models are equipped with "solid" axles in the front.
Another plus of solid axle vehicles is they tend to be easier and cheaper to "lift." This "lifting" increases the distance between the center of the axle hub and chassis of the vehicle. By increasing this distance, larger tires can be installed, which will increase the ground clearance of the Jeep, allowing it to traverse even larger and more difficult obstacles. Jeep is also known as a symbol of freedom because of the capacity of going almost everywhere. Many people equip theirs with roll-bars, extra lights, and maybe a winch to pull the vehicle out from the mud or sand when stuck.
Useful features of the smaller Jeeps are their short wheelbases, narrow frames, and great approach, breakover, and departure angles, allowing them to fit places where full - sized trucks could never go.
Jamborees are two-day off-road events held throughout the year in which Jeep owners can bring their friends and families to meet other Jeepers, tour scenic trails, and test the limits of their vehicles. Any Jeep with a low-range transfer case is allowed, although Full Size Jeeps require prior approval. Only registered participants are allowed to take part in the trail rides and activities; no spectators are allowed. Participants can choose to camp at a local campground, stay in a motel, or find other lodging. The day starts off with breakfast, followed by a general meeting that discusses the trail of the day, as well as the driving techniques required. The trail run is concluded by sundown. Thirty Jamborees are planned for 2008.
Camp Jeep is an annual, three-day, multi-activity oriented event which includes mountain biking, fishing, kayaking, tubing, arts and crafts, and performances by top bands. Children are encouraged to participate as much as adults (events permitting). Man-made obstacle courses are also offered, as well as trail rides (although the latter must be reserved in advance). "Jeep 101" courses are offered for people just getting started in the off-road world, with experienced guides demonstrating proper driving techniques and the vehicles' 4x4 systems. There is no actual camping at Camp Jeep; participants may camp locally or stay at a motel.
