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Thread: XJ Specs

  1. #1
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    Default XJ Specs

    Introduction

    This page will detail the stock specs of the Jeep Cherokee (XJ) which was produced between 1984 - 2001 in the United States. That is a remarkable 18 year lifespan in which 2,884,172 Jeep Cherokees rolled off the assembly line! Originally designed and built by AMC, Chrysler continued the same design when they bought AMC in 1987. Anyways, the Cherokee was the icon of compact SUVs which led to a market full of those who tried to imitate it. Now the term "SUV" doesn't really mean a rugged vehicle that actually performs off the pavement, but the Cherokee remains one of the best "utility" 4x4s ever made.

    On to the specs. The information here should be of some help in identifying what parts came with what year Cherokee. I have made every effort to make sure this information is correct by comparing data from a variety of sources. If you notice any errors or have additional information to contribute, please contact me by PM or e-mail.

    The information on this page will be listed in the following order:

    Common Design
    Dimensions
    Body
    Engines
    Transmissions
    Transfer Cases
    Driveshafts
    Axles
    Gearing
    Cooling System
    Airbags
    Production Numbers
    Trim Levels

    Common Design

    All XJs were built as a "Unibody" design with the body and frame rails tied together as one piece as opposed to a body on frame design. All XJs have solid axles front and rear. The suspension consists of coils for the front and leaf springs for the rear. All XJs came with disc brakes in the front and drums in the rear.

    Dimensions

    (small differences may occur depending on optional equipment or trim level)

    wheelbase = 101.4"
    overall length = 165.3" - 168.8"
    overall width = 67.9" - 70.5"
    track = 58"
    height = 64"
    height with roof rack = 66.8"
    ground clearance (from differentials) = 7.3" - 8.3"
    approach angle = 37.6* - 38*
    departure angle = 31* - 32.1*
    breakover angle = 21* - 21.9*
    curb weight 2wd = 2,891 lbs - 2,993 lbs
    curb weight 4wd = 3,057 lbs - 3,386 lbs
    cargo capacity = 71.0 cu ft.

    Body

    The body comes in both 2-door and 4-door styles with a rear hatch (liftgate).

    In 94 side-impact beams were added in the doors and roof was strengthened. The 3rd brakelight was added to the top of the liftgate.

    In 96 the body structure was strengthened some although it was not noticeable in appearance.

    In 97 the body (and interior) was redesigned to freshen it up a bit. Most noticeably it gave the body smoother lines by changing the bumpers, flares, and moldings. The front fender was trimmed just below the headlights and replaced with plastic bumper endcaps that wrap around to the wheel well. The liftgate was also changed from fiberglass to sheet metal in this year. The windshield washer bottle was also moved to the inside of the drivers side front fender.

    Engines

    2.5L I4 carburated - 105 hp @ 5000 rpm, 132 ft lb torque @ 2800 rpm - used in 84-85 models
    2.5L I4 TBI (fuel injected) - 117 hp @ 5000 rpm, 135 ftlb @ 3500 rpm - used in 86 and updated in 87-90 to 121hp
    2.5L I4 MPI (multi-port injection) - 130 hp @ 5250 rpm, 139 ft lb @ 3250 rpm - used in 91-00

    GM 2.8L V6 - 115 hp @ 4800 rpm, 145 ft lb @ 2400 rpm - used in 84-86

    Renault 2.1L 4cyl. Turbo Diesel - 85 hp @ 3750 rpm, 132 ft lb @ 2750 rpm - used in 85-87

    Italian VM 2.5L Turbo Diesel - 140 hp, 236 ft lb torque - used in overseas XJs

    4.0L I6 "Power Tech" - 177 hp @ 4750 rpm, 220 ft lb @ 4000 rpm - used 87-90
    4.0L I6 MPI "Power Tech HO" (High Output) - 190 hp @ 4750 rpm, 220 ft lb @ 4,000 rpm - used in 91-95 and updated in 96-01 to 225 ft lb torque @ 3000 rpm (00-01 models use a distributorless ignition system)

    Transmissions

    Manual Transmissions
    T4 or a T5 may have been used instead of an AX4 or an AX5 due to supply shortages.
    AX4 - 4 speed manual - manufactured by Aisin - used 84-86 with 2.5L I4 and 2.8L V6 engines
    AX5 - 5 speed manual - manufactured by Aisin - used with 2.8L V6 and 87+ with 2.5L I4
    BA10/5 - 5 speed manual - manufactured by Peugot - used only up to 89
    AX15 - 5 speed manual - manufactured by Aisin - used with 4.0L I6 engines
    NV3550 - 5 speed manual - manufactured by New Venture - used in 00-01 in SE models with 4.0L I6 engines

    Automatic Transmissions
    Torqueflight 904 - 3 speed automatic - used 84-86 with 2.8L V6 engine and ?
    30RH - 3 speed automatic - used with 2.5L I4 engine 94?-00
    AW4 - 4 speed automatic, electronically controlled - manufactured by Aisin - used from 87-01 (87-91 models include a Power/Comfort button that adjusts the shift points)

    Transfer Cases

    The transfer cases used are all chain driven with aluminum housings. NP stands for "New Process" which is the brand, if you will. The newer ones are NV instead which stands for "New Venture". It is the same transfer case just a different name.

    NP207 - "Command-Trac" part-time only - 2.61:1 ratio low range - used 84-87
    NP231 - "Command-Trac" part-time only - 2.72:1 ratio low range - shift pattern 2H - 4H - N - 4L - used 87-01

    NP228/NP229 - "Selec-Trac" - 2Hi - 4Hi(full-time) - N - 4Lo (part-time) - used 84-87
    NP242 - "Selec-Trac" part-time OR full-time - 2.72:1 ratio low range - shift pattern 2wd - 4part-time - 4full-time - N - 4LO - used 87-01

    Driveshafts

    Front Driveshaft - From 84 thru 86 the front driveshaft was a true CV style ("beer can on a popsicle stick"), 87 + The front is a "double cardan" two-piece driveshaft with a CV joint at the transfer case end.

    Rear Driveshaft - The 228 and 229 transfer cases used a fixed output yoke, with a 2-piece driveshaft incorporating the slip spline. Otherwise, The rear is a one-piece shaft with standard u-joints at both ends. The slip yoke is located on the output shaft of the transfer case. On 84-95 models, the yoke slides in and out of the transfer case and is lubricated by the ATF fluid internally. On 96-01 due to a design change, the slip yoke is external (does not slide in and out of the transfer case). This slip yoke is covered with a rubber boot.

    Axles

    Front Axles
    Dana 30 high pinion - reverse cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear - used 84-99 (some axles through 91 are vacuum disconnect, 92+ are non-disconnect, 89-95 with ABS have 5-297x u-joints, all 95+ have 5-297x u-joints, all others have 5-260x u-joints except 84 thru 86 they were CV type rather than open u-joints)

    Dana 30 low pinion - standard cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear, 5-297x u-joints - used 00-01

    Rear Axles
    (Note on Dana 35 axles sometimes referred to as Dana 35C - The "C" does not stand for c-clip. It stands for "custom" meaning it came from Dana unfinished.)
    (Note on 8.25 axles - none of these axles were used on XJs with ABS brakes. If you have ABS, you have the Dana 35. Without ABS you could have either axle. 8.25 axles are c-clip)

    Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 84-89
    Dana 35 c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 90-01
    Chrysler 8.25 - 27 spline, 1.17" diameter shafts, 8.25" ring gear, 3" axle tube - used 91-96
    Chrysler 8.25 - 29 spline, 1.21" diameter shafts, 8.25" ring gear, 3" axle tube - used 97-01
    Dana 44 non c-clip - 30 spline, 1.31" diameter shafts, 8.5" ring gear, 2.75" axle tube - used 87-89 on XJs equipped with towing package.

    Gearing

    3.07 - used with 4.0L engine / manual transmission
    3.31 - only available on older (pre87?) 2 door XJs with "Fuel Economy" package
    3.55 - used with 4.0L engine with automatic transmission; also used with 2WD 4-cyl engines (possibly 4WD as well) equipped with the 4-speed manual transmission
    3.73 - found in some XJs with the towing package
    4.10 - used with 2.5L engine usually, and older XJs with the "Off-Highway Vehicle" package.

    Cooling Systems

    Open style - any normal cooling system used today. Opposite of closed style described below.

    Closed style - has no radiator cap and utilizes a pressure bottle. This style cooling system was used in 87-90 XJs.

    Airbags

    Drivers side airbag (mechanical) was added in 95.
    Passenger side airbag was added in 97. Airbags changed from mechanical to electronic in this year also.


    Production Numbers

    # of XJs built in given year:

    84 - 93,326
    85 - 120,328
    86 - 107,225
    87 - 139,295
    88 - 187,136
    89 - 207,216
    90 - 151,230
    91 - 151,578
    92 - 137,826
    93 - 144,961
    94 - 123,391
    95 - 120,234
    96 - 286,463
    97 - 258,958
    98 - 182,845
    99 - 186,116
    00 - 165,590
    01 - 120,454

    Total = 2,884,172

    Trim Levels

    84 - Base, Wagoneer, Pioneer, Chief
    85 - Base, Wagoneer, Pioneer, Chief, Laredo
    86 - Base, Wagoneer, Pioneer, Chief, Laredo
    87 - Base, Wagoneer, Pioneer, Chief, Laredo, Limited
    88 - Base, Wagoneer, Pioneer, Chief, Laredo, Limited, Sport
    89 - Base, Wagoneer, Pioneer, Chief, Laredo, Limited, Sport
    90 - Base, Wagoneer, Pioneer, Chief, Laredo, Limited, Sport
    91 - Base, Briarwood, Chief, Laredo, Limited, Sport
    92 - Base, Briarwood, Chief, Laredo, Limited, Sport
    93 - Base, Sport, Country
    94 - SE, Sport, Country
    95 - SE, Sport, Country
    96 - SE, Sport, Classic, Country
    97 - SE, Sport, Classic, Country
    98 - SE, Sport, Classic, Limited
    99 - SE, Sport, Classic, Limited
    00 - SE, Sport, Classic, Limited, Freedom
    01 - Sport, Limited, 60th Anniversary Edition

    Here is a chart to help you figure what length your arms need to be at certain heights. Control arms lengths are important for castor and location of axle in the wheel wells. At 3", you will be ok with stock arms, just expect the axle to move back toward the cab a little and some minor bumpsteer.

    Control Arm Length Application Chart
    For Jeep Cherokee (XJ)

    Lift...........Lower Control Arms/Upper Control Arms
    ********Decimal**Fraction**Decimal**Fraction
    Stock........15.75.......15 ¾........15.00.......15
    2”.............15.92.......16............14.88 .... ...15
    3”.............16.09.......16............14.92 .... ...15
    4”.............16.33.......16 3/8......15.03.......15
    4.5”..........16.47.......16 ½........15.11.......15
    5”.............16.62.......16 5/8......15.21.......15 ¼
    6”.............16.97.......17............15.44 .... ...15 ½
    7”.............17.36.......17 3/8......15.74.......15 ¾
    8”.............17.81.......17 ¾........16.09.......16
    9”.............18.30.......18 ¼........16.50.......16 ½
    10”...........18.82.......18 ¾........16.96.......17
    ________________________

    ¤Warning: To prevent serious injury, Do not use winches to move people.¤


    .
    1996 classic -4.0 - NP231j with OMIX SYE with Tom Woods Drive Shaft - HP D30 - C8.25 - 3.55 Gears - 6.5 RC lift - M/T 35x12.5x15 Baja Claws On M/T Black Signature Series Wheel 15x10 cast Aluminum -Rusty Front Prerunner Bumper - Smittybelt RXC8 8,500LBS in Front and Champion 10,000LBS in Rear - Custom Rear Bumper - Iron Rock Off Road OTK Steering - Cut Fenders- Crystal Clear H/L Housing with 8K HIDS - Bed lined Rockers and Quarters-

    WE LIVE IN THE LAND OF THE FREE BECAUSE OF THE BRAVE

  2. #2
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    This mostly applies to XJ's or the Cherokee, but most will also apply to the cousin of the XJ called the MJ or Comanche. This is not meant to guide people to change, alter or modify any current setups, planned setups, or the way you do things. This is strictly meant to be a list of suggestions that has been gathered by people who feel their experience with these vehicles is enough to warrant posting such information to help out new jeepers or any person who is seeking answers to some common questions typically asked..


    Common Abbreviations

    AT = Automatic Transmission OR All-Terrain
    MT = Manual Transmission OR Mud-Terrain
    TC = Transfer Case OR Torque Converter
    SYE= Slip Yoke Eliminator (also called a fixed-yoke conversion or a short shaft kit)
    SA = Solid Axle
    SFA= Solid Front Axle
    SRA= Solid Rear Axle
    CA = Control Arm
    LCA= Lower Control Arm
    UCA= Upper Control Arm
    IFS= Independent Front Suspension
    IRS= Independent Rear Suspension
    SOA= Spring Over Axle
    SUA= Spring Under Axle
    BPE= Bar Pin Eliminator
    DPA= Drop Pitman Arm
    ECU= Engine Control Unit
    TCU= Transmission Control Unit
    TB = Throttle Body
    FI = Fuel Injection
    MPI= Multi-Port fuel Injection
    TPS= Throttle Position Sensor
    IAS= Idle Air Stepper motor
    CPS= Crankshaft Position Sensor
    MAP= Manifold Absolute Pressure (sensor)
    O2 = Oxygen (sensor)
    NSS= Neutral Safety Switch (sometimes called Neutral Start Switch)

    Body (armor, problems, tow points)

    Why can't my XJ have a body lift?
    XJ's don't have a frame because they are unibody. In essence the body is a cage, which supports it's own weight. This is also why XJ's are so light.

    How can I mount tow hooks on the front of my XJ?
    In order to safely mount tow hooks on the front of your XJ you'll need either a larger, aftermarket bumper with pre-made tow points OR tow hook brackets.

    ** Use the proper mounting hardware with brackets that are professionally built, this very important.

    What's a nutstrip?
    Nutstrips are metal strips with nuts welded to them. They are usually used for mounting rear tow hitches to XJ's.

    Why is my hood stuck shut?!
    If not properly maintained XJ hood latches can stick shut because the release cable has broken or come loose. Short of cutting the sides of the fenders open, you'll need to crawl underneath and use some creative movement to grab the release cable with some pliers and pull real hard. You can help prevent this by lubricating your hood release latches ever so often with WD40 or some spray-on lithium grease.


    Drivelines (Transfer cases, axles, transmissions, gearing, traction, production)

    What transmissions came in the XJ?
    AX-15: 5 speed manual transmission
    AW4: 4 speed automatic transmission
    Peugot: manual transmission

    What axles came in the XJ?
    XJ's all have a Dana 30 axle in the front.
    In the rear, the following are options:
    Dana 35C without C-clips (1984-1989/1990)
    Dana 35C with C-clips (1990/1991-2001)
    Chrysler 8.25 (27 spline - 1991-1996, or 29 spline - 1997-2001)
    Dana 44 (most common on '87s, also found in some '88's and '89's)

    What gear ratios came in XJ axles?
    3.07 (usually found with 4.0L and manual tranny)
    3.55 (usually found with 4.0L and auto tranny)
    3.73 (not common, found in some early/mid 90's XJ's with the tow pkg)
    4.10 (usually found in 4-bangers)

    What's the difference between a 231 and a 242 transfer case?
    The NP231 transfer case (Command-Trac) provides 2hi, neutral, 4hi and 4lo. The NP242 (Selec-Trac) provides 2hi, full time 4 wheel drive, 4hi and 4lo.

    What's the difference between a locker and a limited slip?
    A Limited Slip Differential, or an LSD, is a traction aid that is most often clutch or gear driven. A simple explanation is that as a wheel starts to slip/spin the LSD detects this and transfers "some" power to the wheel that is not slipping/spinning. LSD's are usually fairly well mannered on the street. A locker, on the other hand, essentially locks an axle together for and allows full power to both wheels. Lockers usually have at least some negative driving characteristics when on the street.

    What is Axle wrap?
    This is when the rotational force of the tires causes the axle housing to twist or rotate. This rotation forces the springs to bend into an S-shape. When the axle housing rotates far enough, forces cause the tires to loose traction, and jump, or "hop". Once traction is lost, the springs snap back into their original positions.


    Engines (cooling, performance, production)

    What engines did the XJ come with?
    1984 - 1986 - Carbureted 2.5L 4-cylinder or 2.8L GMV6
    1987 - 1991 - Fuel Injected 4.0L inline 6cylinder or 2.5L 4cylinder
    1992 - 2001 - Fuel Injected 4.0L HO (High Output) inline 6cylinder or 2.5L 4cylinder

    Why does my rig overheat?
    XJ's are notorious for overheating. From early years until the early 90's they came with a "closed" cooling system. When functioning properly, these systems should perform fine. "Open" systems, on later model XJ's, are just like most typical cooling systems (filler cap on radiator, etc).
    Several things can cause overheating…
    1) Bad thermostat (it may stick and not allow the engine to cool)
    2) Bad electric fan motor or sensor (this should kick on once the vehicle reaches 220 degrees, if it doesn't…it's bad)
    3) Bad clutch fan (this is designed to spin on a clutch system, if it fails you will overheat in the city very quick)
    4) Bad radiator (plugged or broken fins will cause an XJ to overheat)
    5) Plugged coolant passages in the engine block. (typically manifested by highway overheating)

    Why won't my Jeep start?
    On the 4.0, there are several things known for causing starting problems. The CPS, the TPS, and the NSS. Do a search on each of those.

    Why won't my reverse lights work?
    Generally the NSS needs to be removed and cleaned. There is a good write-up on GenXJ.com, and pics at http://jeepin.com/features/nss

    Why is there oil in my air filter box?
    XJ's commonly, over time, build up gunk in the PCV and CCV valves/lines and create pressure which then pushes oil into the air filter. Replace these valves and lines (parts from the dealer) and the problem SHOULD go away. If it doesn't, you may need to clean the inside of the valve cover.

    Lifts (tire fitting, backspacing, lift types)

    What size tires can I fit on my Jeep?
    There is no absolute due to variance in suspensions, but here are some general guidelines…

    -- No trimming and no lift, factory wheels
    Typically a stock rig can handle 29" tires, MAYBE 30"… 235's metric…

    -- No trimming, 15x8" Tech1 w/4.75 backspacing --

    With 2" lift = 29 to 30x9.50 tires
    With 3" lift = 30x9.50 tires
    With 4.5" lift = 31x10.50 tires

    -- Minor trimming, 15x8" Tech1 w/4.75 backspacing --

    With 2" lift = 30x9.50 tires
    With 3" lift = 30x9.50 to 31x10.50 tires
    With 4.5" lift = 31x10.50 to 32x11.50 tires
    With 6" lift = 33x12.50 tires

    In addition to these guidelines, year must be considered. Up to 96 the wheel wells were generally more "open"…97 and later have a tighter front wheel well and are more likely to experience rubbing. Of course, virtually any tire can be fit with enough trimming. Typically most XJ owners don't go much larger than 35" tires, and that's at a minimum of 6" of lift.
    If your wheel backspacing is less than 4.75" (such as 3.75") expect to add at least an extra inch of lift.
    Also, thinner tires will fit easier as well. (such as 33x10.50's)

    What is backspacing?
    The distance from the inner edge of the wheel to the hub mount pad. Note: Sometimes the distance from the outer edge of the wheel to the hub mount pad is referred erroneously to as offset. BE CAREFUL!

    What is wheel offset?
    OFFSET - The distance from the centerline to the hub mount pad (where the wheel attaches to the hub). POSITIVE OFFSET - The hub-mounting surface is toward the front or wheel side of the wheel. NEGATIVE OFFSET - The hub mounting surface is toward the back or brake side of the wheels centerline.


    Vibes (wheel shimmy, vibes, SYE's, death wobble)

    What's a SYE?
    A slip yoke eliminator replaces the slip style yoke that came on almost all XJ's with a fixed yoke and (usually) a CV style drive shaft with a slip built in. This reduces driveline vibes common with lifted XJ's and steep driveline angles.

    Will I get vibes after my lift? (Do I need an SYE?)
    This is not a cut and dry question/answer. The safest answer is: wait and see. Prepare ahead of time, have enough money saved to buy a slip yoke eliminator in case you end up needing it. Of course it's always ideal to get one, but sometimes people can't afford it. That being said, here are the options:
    Typically, if you are over 3 inches of lift, you'll need an SYE. Now, that's just typical, not absolute. That is especially true for 1996 and newer XJ's because they have a longer output shaft. This puts more stress on the components and creates more vibes.
    Other options are transfer case drop kits and long travel slip yokes. These typically are more of a "band-aid" than a fix and can sometimes cause more problems in the long run.

    What is death wobble?
    You'll know it if you experience it. Death wobble is when your jeep suddenly, and violently, begins to shake back and forth. It often comes after hitting a bump, and USUALLY at higher speeds. It is truly frightening. This is not to be confused with tire shimmy, where the steering wheel gets a shake in it at certain speeds.

    What causes Death Wobble?
    Death wobble is typically caused by
    A) Out of balance tires or out of round wheels.
    B) Loose track bar.
    C) Worn front-end joints. (tie rod ends, track bar, ball joints, etc)
    D) Bad alignment.
    E) Bad caster angle.
    F) Bad steering stabilizer.

    There are kits out there to correct the effects of high lifts, but usually it comes down to checking those 6 things.

    What causes tire shimmy?
    Tire shimmy is typically caused by unbalanced tires or out of round wheels. If it gets bad enough it's possible for it to deteriorate into death wobble.

    What is and causes bump steer?
    Bump-steer is the result of poor (and sometimes unavoidable) suspension geometry. The reaction is described as the vehicle steering off the intended track, on it's own (without driver input), when encountering a bump. Sometimes it is described by a driver as the vehicle needing constant direction correction whenever driving over a bump, "I hold the steering wheel straight but the vehicle steers to the right every time I hit a bump." The cause is the axle tilt, due to the tire hitting a bump, changing the length between the axle draglink mount on a spindle and the pitman arm on the steering box. During a compression bump this length is reduced and the spindle must rotate (steer) to accommodate the draglink length.

    Please note that many of the suggestions here can be different from person to person, I tried to keep it as generic as possible, however, if you see something that seems inaccurate or something that needs added, please PM me and I will change it as seen fit. This can be a powerful tool to those in need, I'll try to keep it accurate, and up to date.
    1996 classic -4.0 - NP231j with OMIX SYE with Tom Woods Drive Shaft - HP D30 - C8.25 - 3.55 Gears - 6.5 RC lift - M/T 35x12.5x15 Baja Claws On M/T Black Signature Series Wheel 15x10 cast Aluminum -Rusty Front Prerunner Bumper - Smittybelt RXC8 8,500LBS in Front and Champion 10,000LBS in Rear - Custom Rear Bumper - Iron Rock Off Road OTK Steering - Cut Fenders- Crystal Clear H/L Housing with 8K HIDS - Bed lined Rockers and Quarters-

    WE LIVE IN THE LAND OF THE FREE BECAUSE OF THE BRAVE

  3. #3
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    I can't express how much it means to me when members go out of their way to provide helpful information. This is key to a great site, participation and information people need. My sincere and hardy...


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    Amazing. Thank you dearly for this info. I learned some things about my XJ that I did not know. Thanks.
    Sean. AKA "Saggy Waggy."

  5. #5
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    thanks for all that info. i got all that info out of the xj book wrote by eric zapp or something like that. if you have not read this book then you need to go and get it. it is a great book to learn about a xj.
    01, Tera Flex 6" long arm kit, jks quick disco's,jks bar pin eliminators, Fox 2.0 shocks I won for 5 bucks, Tom woods Sye with rear drive shaft, Tera flex rear disc brakes, custom front bumper, customer rear bumper, rage roof rack. H4 head lights, k&n intake and cone, black steelies with 285x75x16 retreads, metal gas skid. Finally I have a nice jeep no more pos.
    .,=====o00
    //___l__,\____\,___
    l_--- \___l----[]lllllll[]
    _(o)_)___(o)_)--o-)_

  6. #6
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    here is a link to were you can get the book and just some realy good info for all xjs
    http://www.ericsxj.com/
    01, Tera Flex 6" long arm kit, jks quick disco's,jks bar pin eliminators, Fox 2.0 shocks I won for 5 bucks, Tom woods Sye with rear drive shaft, Tera flex rear disc brakes, custom front bumper, customer rear bumper, rage roof rack. H4 head lights, k&n intake and cone, black steelies with 285x75x16 retreads, metal gas skid. Finally I have a nice jeep no more pos.
    .,=====o00
    //___l__,\____\,___
    l_--- \___l----[]lllllll[]
    _(o)_)___(o)_)--o-)_

  7. #7
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    hey does anyone have the tire to gear ratio and the differences for stick shifts or autos?
    1993 Jeep Cherokee
    6.5 in Rock Krawler long arm in the front(with 2 in poly spacers (springs sagged a bunch im sitting at 6.5 now with the spacers)
    4.5 Rubicon Express in the rear with MJ shackles
    Custom bumper with XRC-8 winch
    33in BFG M/T
    Aussie Locker(rear)
    Dana 44 rear/30 front

  8. #8
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    i have it somewhere ill have to find it , when i do ill post it unless someone beats me to it
    1996 classic -4.0 - NP231j with OMIX SYE with Tom Woods Drive Shaft - HP D30 - C8.25 - 3.55 Gears - 6.5 RC lift - M/T 35x12.5x15 Baja Claws On M/T Black Signature Series Wheel 15x10 cast Aluminum -Rusty Front Prerunner Bumper - Smittybelt RXC8 8,500LBS in Front and Champion 10,000LBS in Rear - Custom Rear Bumper - Iron Rock Off Road OTK Steering - Cut Fenders- Crystal Clear H/L Housing with 8K HIDS - Bed lined Rockers and Quarters-

    WE LIVE IN THE LAND OF THE FREE BECAUSE OF THE BRAVE

  9. #9
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    tire size ////////////// optimal gears
    31" ///////////////// 4.10:1
    32" ///////////////// 4.56:1
    33" //////////////// 4.56:1
    35" //////////////// 4.88:1
    36" ////////////// / 5.13:1
    37" //////////////// 5.38:1

    ------------------------------------------------------

    let me know if that helps or if you need sizes
    Last edited by 96xj; 10-21-2009 at 01:43 PM.
    1996 classic -4.0 - NP231j with OMIX SYE with Tom Woods Drive Shaft - HP D30 - C8.25 - 3.55 Gears - 6.5 RC lift - M/T 35x12.5x15 Baja Claws On M/T Black Signature Series Wheel 15x10 cast Aluminum -Rusty Front Prerunner Bumper - Smittybelt RXC8 8,500LBS in Front and Champion 10,000LBS in Rear - Custom Rear Bumper - Iron Rock Off Road OTK Steering - Cut Fenders- Crystal Clear H/L Housing with 8K HIDS - Bed lined Rockers and Quarters-

    WE LIVE IN THE LAND OF THE FREE BECAUSE OF THE BRAVE

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    Quote Originally Posted by 96xj View Post
    tire size optimal gears
    31" 4.10:1
    32" 4.56:1
    33" 4.56:1
    35" 4.88:1
    36" 5.13:1
    37" 5.38:1

    let me know if that helps or if you need sizes
    Is this based on AUTOMATIC or MANUAL transmissions?

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    Quote Originally Posted by Mudderoy View Post
    Is this based on AUTOMATIC or MANUAL transmissions?
    dose it make a difference?
    1996 classic -4.0 - NP231j with OMIX SYE with Tom Woods Drive Shaft - HP D30 - C8.25 - 3.55 Gears - 6.5 RC lift - M/T 35x12.5x15 Baja Claws On M/T Black Signature Series Wheel 15x10 cast Aluminum -Rusty Front Prerunner Bumper - Smittybelt RXC8 8,500LBS in Front and Champion 10,000LBS in Rear - Custom Rear Bumper - Iron Rock Off Road OTK Steering - Cut Fenders- Crystal Clear H/L Housing with 8K HIDS - Bed lined Rockers and Quarters-

    WE LIVE IN THE LAND OF THE FREE BECAUSE OF THE BRAVE

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    Quote Originally Posted by 96xj View Post
    dose it make a difference?
    I think you can run lower gears with an auto. Someone that knows will jump in here and straighten it out.

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    Quote Originally Posted by Mudderoy View Post
    I think you can run lower gears with an auto. Someone that knows will jump in here and straighten it out.
    someone please do ill like to know
    1996 classic -4.0 - NP231j with OMIX SYE with Tom Woods Drive Shaft - HP D30 - C8.25 - 3.55 Gears - 6.5 RC lift - M/T 35x12.5x15 Baja Claws On M/T Black Signature Series Wheel 15x10 cast Aluminum -Rusty Front Prerunner Bumper - Smittybelt RXC8 8,500LBS in Front and Champion 10,000LBS in Rear - Custom Rear Bumper - Iron Rock Off Road OTK Steering - Cut Fenders- Crystal Clear H/L Housing with 8K HIDS - Bed lined Rockers and Quarters-

    WE LIVE IN THE LAND OF THE FREE BECAUSE OF THE BRAVE

  14. #14
    LizardRunner's Avatar
    LizardRunner is offline Level: Uber Jeep Cherokee Trailer Queen
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    Default Re: XJ Specs

    Quote Originally Posted by 96xj View Post
    someone please do ill like to know
    gear ratios work the same for either type of tranny. they are normally charted at a ratio of 1:1 final drive so for a manual AX15 that would be fourth gear and for the automatics that would be 3rd gear.
    2004 4.7v8HO WJ OMG, it's RED , Green bits are now under the hood. Loving the F/R Lockers and D44's. RIP 2011 Lil Ric and Gordo. RIP 2012 Jessie RIP 2013 Kat. RIP 2013 Ed . Lizards can always climb but sometimes they loose their tails to get away. The true patriot will stand beside the soldier when the time comes to fight Now building Asnikiye heca (Buzzard's Roost) homestead farm. My road is my wheeling trail

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    Default Re: XJ Specs

    man! now thats some good information!

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