Product Reviews
Tire Reviews

Mud Tire Review Index
  Home Page
  Photo Album
  Tech Section
  Product Reviews
  Cool Products
  Jeep Central
  Readers Rigs
  4x4 Club Links
  Links Directory
  4x4 Vendors
  Cool Products
  Shop for Stuff
  Centralia PA
  Computer Help
  Site Index
  Project CJ-7


Installing 23,000 Volt Offroad Lights

What are HID Lights?

Onboard Air
Converting a York
AC Compressor
to Pump Air

Warn 9500i Winch Installation

HEI Ignition
Installation & Review

Lockers, Limited Slips &
other Differentials Explained

Jeep Dana 300 TeraLow - 4:1 Gearset for the Dana 300 Transfer Case

Jeep Trans Swap
T-18A Transmission Rebuild & Short Shaft Conversion

For all the Jeep
Fans out there!

Offroad Reports

Jeeps at Rausch Creek
Off-Road Park

Wheeling in the Valley of the Ferns

Paragon Adventure Park
Rock Krawl

1.jpg (70086 bytes)
Jeeps in Tellico NC

Thousands more
photos here..»



Got Pop-ups
Spyware & Viruses? feels your pain. Let our Geeks help you...

Jeep® Wrangler JK


General Information

Vehicle Type       2-Door Sport Utility
Assembly Plant   Toledo, Ohio
EPA Class   Multipurpose vehicle



3.8-Liter, OHV, 12-Valve SMPI V6

Availability   Standard
Type & Description   Six-cylinder, 60° V-type, liquid-cooled
Displacement   230.5 cu. in. (3,778 cu. cm)
Bore x Stroke   3.78x3.43 (96x87)
Valve System   OHV, 12 valves, roller followers, hydraulic lifters
Fuel Injection   Sequential, multiport, electronic
Construction   Cast-iron block, aluminum alloy heads
Compression Ratio   9.6:1
Power (SAE net)   205 hp (153 kW) @ 5,200 rpm (53.9 hp/L)
Torque (SAE net)   240 lbs-ft @ 4,000 rpm
Fuel Recommendation   Unleaded regular, 87 octane (R+M)/2
Oil Capacity   6 qt. (5.7L) plus filter
Coolant Capacity   13.36 qt. (12.64L) Std.
Emission Controls   Three-way catalytic converter, heated oxygen sensors, electronic EGR and internal engine features

Meets Tier 2 Bin 5 (federal) and LEV 2 (CA) emission requirements



Electrical System

Alternator   160A
Battery   600 CCA, maintenance-free


 NSG 370—Manual, Six-Speed Overdrive
Availability   Standard—All models
Description   Synchronized in all forward gears and reverse, multirail shift system with top-mounted shift lever
Clutch   Hydraulic actuation
Gear Ratios 1st   4.46
Gear Ratios 2nd   2.61
Gear Ratios 3rd   1.72
Gear Ratios 4th   1.25
Gear Ratios 5th   1.00
Gear Ratios 6th   0.84
Gear Ratios Reverse   4.06
Axle Ratio   3.21 Std., 4.10 Opt. (Std. on Rubicon)
Overall Top Gear   2.69 Std., 3.44 Opt. (Std. on Rubicon)


42RLE—Automatic, Four-Speed Overdrive

Availability   Optional
Description   Electronic governor, electronically controlled converter clutch
Gear Ratios 1st   2.84
Gear Ratios 2nd   1.57
Gear Ratios 3rd   1.0
Gear Ratios 4th   0.69
Gear Ratios Reverse   2.21
Axle Ratio   4.10
Overall Top Gear   2.83

Transfer Case:

NV241 Command-Trac
Type   Part-time
Operating Modes   2WD High; 4WD High; Neutral; 4WD Low
Low Range Ratio   2.72:1
Center Differential Type   None

Transfer Case:


NV241OR Rock-Trac

Type   Part-time, heavy-duty
Operating Modes   2WD High; 4WD High; Neutral; 4WD Low
Low Range Ratio   4.0:1
Center Differential Type   None

Dimensions And Capacities

General Overall Length   152.8 (3,881.2)
Overall Width
(without mirrors)
  73.7 (1872.9)
Overall Height, Hardtop   70.9 (1,800.1)
Wheelbase   95.4 (2,424.1)
Track, Front   61.9 (1,572.3)
Track, Rear   61.9 (1,572.3)
Overhang, Front   26.7 (679.2)
Overhang, Rear   30.6 (777.9)
Maximum Payload
(includes occupants & cargo)
  1,000 lbs. (373 kg)

Curb Weight

Wrangler X, Man. Trans   3,760 lbs. (1,403 kg)
Wrangler X Auto. Trans   3,785 lbs. (1,413 kg)
Wrangler Sahara, Man. Trans   3,951 lbs. (1,475 kg)
Wrangler Sahara, Auto. Trans   3,976 lbs. (1,484 kg)
Wrangler Rubicon, Man. Trans   4,104 lbs. (1,532 kg)
Wrangler Rubicon, Auto. Trans   4,129 lbs. (1,541 kg)


Seating Capacity, F/R   2/2
Front Headroom   41.3 (1,048.4)
Front Leg Room   41.0 (1,040.3)
Front Shoulder Room   55.8 (1,416.7)
Front Hip Room   55.6 (1,412.8)
Seat Travel   Driver–9.4 (239.5), passenger–9.4 (239.5)
Front Volume Index
cubic ft. (cu. meters)
  54.6 (1,545)
Rear Headroom   40.3 (1,024.6)
Rear Leg Room   35.6 (904.9)
Rear Shoulder Room   61.6 (1,565.9)
Rear Hip Room   44.7 (1,135.6)
Rear Seat Volume Index
cu. ft. (cu. meters)
  48.3 (1,367)
Cargo Liftover Height   27.8 (707.2)
Maximum Cargo Width at Swing Gate Opening   58.7 (1,490.4)
Minimum Cargo Width at Swing Gate Opening   37.0 (939.2)
Maximum Cargo Height at Swing Gate Opening   37.1 (943.5)
Minimum Cargo Height at Swing Gate Opening   37.0 (939.2)
Distance Between Wheelhouses   44.7 (1,135.6)
Cargo Volume
cubic ft. (cu. meters)
Rear Seat Installed
  56.5 cu. ft. (1.60)
Rear Seat Removed   61.2 cu. ft. (1.73)
Behind Rear Seat   17.15 cu. ft. (0.19)

Body And Chassis

  Longitudinal front engine, four-wheel drive
Construction   Ladder-type frame, open steel body


Front   Live axle, leading arms, track bar, coil springs, stabilizer bar,
low-pressure (on 16-inch wheel packages) gas-charged shock absorbers—std.; Monotube high-pressure (on 17- and 18-inch wheel packages) gas-charged shock absorbers—std. Rubicon;
Electronic Sway Bar Disconnect System (ASDS) opt.
Rear   Live axle, trailing arms, track bar, coil springs, stabilizer bar, low-pressure (on 16-inch wheel packages) gas-charged shock absorbers—std.; Monotube high-pressure (on 17- and 18-inch wheel packages)  gas-charged shock absorbers—std. Rubicon


Type   Power, recirculating ball with damper
Overall Ratio   16.7:1 overall
Turning Diameter (curb-to-curb)   34.9 ft. (10.62 m.)
Steering Turns (lock-to-lock)   3.5


Availability   Standard—All
Power Assist Type   10 (254) single-diaphragm vacuum
Four-Wheel Anti-Lock with on- and off-road calibrations   Standard
Electronic Stability Program (ESP)   Standard
Parking Brake Type   Drum-in-hat
Front Size and Type   11.9x1.1 (302x28) vented rotor with 2.6 (66) single-piston floating caliper
Swept Area (total front)   190.8 sq. in. (1,230.97 sq. cm.)
Rear Size and Type   12.44x0.47 (316x12) solid rotor with 1.9 (48) single-piston floating caliper
Swept Area (total rear)   55.4 sq. in. (357.6 sq. cm.)


Availability   X Standard
Type and Material   Painted Steel
Size   16x7.0
Availability   X Optional
Type and Material   Painted Cast Aluminum
Size   16x7.0
Availability   Sahara Standard
Type and Material   Painted Cast Aluminum
Size   17x7.5
Availability   Rubicon Standard
Type and Material   Machined Cast Aluminum
Size   17x7.5
Availability   Sahara Optional
Type and Material   Painted Cast Aluminum
Size   18x7.5


Availability   X Standard
Size and Type   P225/75R16, On/Off-Road, Black Side Wall
Mfr. and Model   Goodyear Wrangler ST
Revs per Mile (km)   712 (1,146)
Availability   X Optional
Size and Type   P245/75R16, On/Off-Road, Black Side Wall
Mfr. and Model   Goodyear Wrangler SRA
Revs per Mile (km)   687 (1,106)
Availability   Sahara Standard
Size and Type   P255/75R17, On/Off-Road, Outlined White Lettered
Mfr. and Model   Goodyear Wrangler SRA
Revs per Mile (km)   661 (1,064)
Availability   Sahara Optional
Size and Type   P255/70R18, On/Off-Road, Outlined White Lettered
Mfr. and Model   Bridgestone Dueler 693
Revs per Mile (km)   653 (1,051)
Availability   Rubicon Standard
Size and Type   LT255/75R17, Off-Road, Black Side Wall
Mfr. and Model   BFGoodrich Mud Terrain
Revs per Mile (km)   650 (1,046)

Vehicle Clearances

Clearances P225/75R16 P245/75R16 P255/75R17 P255/70R18 LT255/75R17
Approach Angle
40.8 42.0 43.8 44.6 44.3
Breakover Angle
21.8 23.1 24.9 25.5 25.4
Departure Angle
37.4 38.7 40.3 40.6 40.4
Front Axle to Ground (inches) 9.1 9.6 10.3 10.6 10.5
Rear Axle to Ground (inches) 8.8 9.4 10.1 10.3 10.2

Source: DaimlerChrysler Media Services.




Jeep Central
Jeep Central Home
The Jeep Time Line
Jeep History
Origin of the term jeep
Origins of the first jeep

Jeep Projects
Jeep Engines
Jeep Transmissions
Jeep Transfercases
Jeep Axles
TJ Diagnostics Codes
ARB Air Locker Install
Jeep Wide Track
Axles Swap

Jeep Project CJ-7

An ongoing Budgeted Rebuild/Build up of a Rock Crawling Machine.

Jeep Wrangler JK
Jeep JK Specs

Ramp Travel Index
RTI / Ramp Travel Index What it is and how to calculate it, with and without the ramp. the ramp.


Offroad Tire Info
P-Metric Tire Sizes Conversion to Inches
Tire Terminology
Wheel Terminology
How to Pick the Right
Tires for your Truck
Truck Tire Info
Tires - What Hits What Fits
All Terrain  Mud Terrain
Tire Reviews & Info
Mud Terrain MT Tire Reviews
All Terrain AT Tire Reviews
Super Swamper Bogger
Super Swamper SSR
Super Swamper SX
Super Swamper Vortrac
Interco IROK TSL
Super Swamper LTB
Super Swamper TSL
Super Swamper TSL Radial
Super Swamper Narrow
Interco SS-M16 Swamper
Thornbird TSl Radial
Thornbird TSl Bias
Thornbird TSL
Parnelli Jone Dirt Grip
BFGoodrich Krawler
BFGoodrich MT T/A KM
BFGoodrich MT T/A KM2
BFGoodrich AT TA KO
BFGoodrich Mud King XT
Bridgestone Dueler MT
Cooper Discoverer ST
Cooper Discoverer STT
Cooper Discoverer ST/C
Federal Couragia MT
Firestone Destination AT
Firestone Destination MT
General Grabber MT
General Grabber AT2
Green Diamond Icelander
Ground Hawg Mud Tire
Hankook Dynapro MT
Hankook Dynamic MT RT01
Hercules Terra Trac MT
Hercules Trail Digger MT
Kelly-Springfield Safari DTR
Kelly-Springfield Safari MSR
Kumho Road Venture MT
Kumho Road Venture KL71
Kumho Road Venture AT
Dick Cepek Mud Country
Dick Cepek F-C II
Dick Cepek Fun Country II
Dick Cepek Fun Country Nylon
Dick Cepek Fun Country Kevlar
Mastercraft Courser MT
Mastercraft Courser HTR
Mastercraft Courser HTR Plus
Maxxis BigHorn Radial
Maxxis Creepy Crawler
Maxxis Trepador
Maxxis Buckshot Mudder
Maxxis MA-SW
Maxxis M-8080 Mudzilla
Maxxis MT-754 Buckshot
Maxxis MT-753 Bravo
Maxxis MA-751 Bravo
Maxxis MA-S2 Marauder II
Maxxis MA-S1 Marauder
Maxxis MT-762 BigHorn
Nitto Mud Grappler
Nitto Terra Grappler
Nitto Dura Grappler
Nitto Dune Grappler
Nokian Vatiiva MT
Pit Bull Rocker Extreme
Pit Bull Maddog
Pit Bull Growler
Goodyear Wrangler MT/R
Pro Comp Xterrain
Pro Comp All Terrain
Pro Comp Mud Terrain
Pro Comp Xtreme AT
Pro Comp Xtreme MT
Toyo Open Country AT
Toyo Open Country MT
TrXus Mud Terrain
TrXus STS All Terrain
Michelin LTX A/T²
Michelin LTX AT2 Press
Michelin LTX AT2
Mickey Thompson MTZ
Mickey Thompson MTX
Mickey Thompson Baja Claw Radial
Mickey Thompson Baja Claw Bias
Mickey Thompson Baja Crusher
Mickey Thompson Baja ATZ Radial SLT
Competition Claw
Dunlop Mud Rover
Federal Couragia M/T
Nitto Dura Grappler
Yokohama Geolandar
Dick Cepek's 2008 F-250 Super Duty Project Vehicle – Project CRUSHER
Mud Tire Reviews

Strange and Unusual Vehicles & 4x4s

Jeep V8 Swap Tips

Offroaders Guide to Gearing up for Offroad
From Basic Equipment to Well Equipped.  An extensive list guide to help you prepare your vehicle for the offroad.

The Jeep Timeline

Jeep road car timeline, 1945 to Present  -  Jeep, A subsidiary of DaimlerChrysler

1940s 1950s 1960s 1970s 1980s 1990s 2000s
5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
Traditional CJ-2A
Wrangler YJ
  Wrangler TJ
                                                                        CJ-8                                   LJ      
                    CJ-5 - 1955-1983                                             Wrangler JK
                    CJ-6 - (stretched CJ-5) - 1955-1981                                                   JK Unlimited
                    Jeep DJ Postal / Dispatch Jeep / Surrey Gala Package                                                  
Mid SUV       VJ
                              C101 C104                                                       Liberty KJ
Large SUV                                     Wagoneer / Cherokee SJ Grand Wagoneer   Gr. Cherokee ZJ Gr. Cherokee WJ Gr. Cherokee WK
                                                                              Cherokee XJ         Commander
Pickup                                     Gladiator Honcho
                                    J-Series Pickups                                            
Truck                       Forward Control
FC-150, FC-170
                                  FJ-3, FJ-3A Fleetvan                                                                    
Crossover                                                                                                                             Compass
Other                           JEEP Concept Vehicles - Experimental, Prototype Concepts