Trucks, Jeeps

Jeep at Allpar: Cherokee to Wrangler, and everything in between

jeepFuture: 2018 Jeep Wrangler • 2019 Scrambler Pickup

Looking for all of Allpar’s Jeep pages in one spot? You’ve reached the right place!

We have divided up the Jeep line into “current Jeeps” (the ones they still make), Jeeps of the Past, and Jeeps by Year and Category (which is where you will find some of the vintage years). We also have concept cars and shows.

Dive in!

Future Jeeps

2018 Jeep Wrangler JL: carrying the torchwrangler JL
2019 Jeep Scrambler JT pickup scrambler JT
Wagoneer / Grand Wagoneer: will they make the cut?wagoneer

Current Jeeps

Wrangler (2011-17): the Jeep of Jeeps, tracing its heritage to 1941 Bantam and Willys designswrangler JK
2014-17 Jeep Grand Cherokee (also see Grand Cherokee SRT) - high-selling top of the linegrand cherokee
Cherokee: the first post-Fiat Jeep, can it live up to its name?cherokee
Compass: the extended-length Renegade — a future sales leader?compass
Renegade: a compact, Italian made crossoverrenegade

Jeep J8: the paramilitary/NGO Wrangler made in Egypt

jeep j8
Generation One Compass: “the pretender” finally given off-road statuscompass
Patriot: compact FWD crossover

Jeeps of the Past

Where did it all start? Bantam and Willys Jeeps • Jeep MA and MB

military jeep

Gladiator / J-Series Pickups 1963-87

gladiator

Scrambler pickup (1981-85 CJ-8): Unpopular at first, then sought-after CJ-based pickup

scrambler

Cherokee XJ (1984-2001)

cherokee xj

Jeep Cherokee police cars: the surprisingly popular and effective predecessors of today’s “police utilities”

cherokee police

Earthroamer RV: Jeep-based go-anywhere RV

earthroamer

The first Jeep Wrangler: 1997-2006

1997 wrangler

The first Wrangler JK: 2007-2010

wrangler JK

Jeepster: 1948-50, 1966-73, and concept cars

jeepster

Jeep Commander: stretched Grand Cherokee

commander
Liberty (Cherokee outside North America): 2002-2004 • 2005-2007 • 2008-2012liberty
jamboree
gc

Jeeps by year and category

Willys Whippet: popular pre-war Willyswillys
Willys before Jeep: a strong, popular automakerwillys

Willys and Kaiser-Jeep in Brazil

brazil
Which Jeep am I? Take the Jeep quiz!

 

Jeep Reviews at Allpar

jgc
cherokee review
jeep compass
wrangler
patriot

Quadra-Trac II

Launched in 1999 on the Jeep Grand Cherokee, the Quadra-Trac II transfer case normally sent most power to the rear wheels. When a wheel lost traction, a gerotor pump increased hydraulic pressure on a multi-disc clutch pack, sending power to the front axle.

The pump used a rotor driven by the front drive shaft and the case by the rear drive shaft, increasing pressure to the clutch pack in proportion to their speed variation. Clutch discs were alternately splined to the front and rear drive shafts. Because Quadra-Trac II could immediately pressurize the clutch pack, it had a faster response than a normal viscous coupling. (Quadra-Trac II's low range had a 2.72:1 torque ratio and fully locked the center differential).

A similar pump was incorporated in the Vari-Lok differential; power transfer was proportional to wheel speed difference rather than torque difference. By avoiding the need to pre-load the differential to assure torque transfer (which causes wear in normal use), Vari-Lok could be virtually wear-free. Again, Vari-Lok differentials were faster and smoother than viscous systems, and the pump response could be precisely tuned to driving conditions, enabling the use of this system in the front axle as well as the rear.

Buying a used Jeep


Related Jeep Wrangler pages

Inside the Wrangler

Years

Background

Variants and related...

The 2018 Jeep Wrangler JL: suspension aluminum vs steelopen or fixed roof pickup
body engineering
weight, strength, and safetytransmissionsengines

Jeep Grand Cherokee at Allpar

ZJ, WJ (Pure Jeep)WK (Joint Development)WK2 (Current)


We make no guarantees regarding validity, accuracy, or applicability of information, predictions, or advice. Please read the terms of use and privacy policy. Copyright © 1994-2000, David Zatz; copyright © 2001-2016, Allpar LLC (except as noted, and press/publicity materials); all rights reserved. Dodge, Jeep, Chrysler, Ram, and Mopar are trademarks of Fiat Chrysler Automobiles.


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