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Rockridge 4WD IS Taking Zone Offroad Suspension Lift Kits BLACK FRIDAY SPECIALS!! You asked, we deliver!Rough Country Lift Kits and Parts!

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Unread 05-27-2008, 02:26 PM   #1
rustywrangler
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YJ Wrangler Stock Specs!!!

This page will be dedicated solely to the stock specifications/OEM equipment of the Jeep YJ Wrangler. If you find any part of this data to be invalid or missing, please do not hesitate to PM me and I will fix it.

Individual sections:
Common Design
Dimensions
Body
Engines
Transmissions
Transfer Cases
Driveshafts
Axles
Gearing
Trim Levels
Production Numbers
Other Resources





Common Design

Virtually every part of the YJ is interchangable between years. All YJ's feature a body on frame design. The YJ is the only Wrangler to have "square" headlights. All YJ's feature a leaf spring suspension and solid axles.

Dimensions

wheelbase = 93.4"
overall length = 1987-89: 152.6 in
......................1990-92: 153 in
......................1993-95: 151.9 in
overall width = 66"
track =
height = 1993-95: 71.9 in Hard or Soft Top
............1987-1992 Soft Top: 72 in
............1987-1992 Hardtop: 69.6 in
stock height of Jeep to rocker panels = 18"
ground clearance (from differentials) = 9"
approach angle =
departure angle =
breakover angle =
curb weight 4wd = 3,028 lbs. - 3,241 lbs.
towing capacity = 2,000lbs with proper hitch (officially) - 3,000lbs with proper hitch (un-officially)
Wheel bolt pattern = 5 X 4.5
Rim backspacing = 5.5"
Stock Tire Size = 205/75/15 or 215/75/15 depending on model

Stock suspension angles:
Toe: Set to 0 degrees, "ok range" 1/16 in - 1/16 out
Camber: Set to 0 degrees, "ok range" -1/2deg to +1/2 deg
Caster: *Manual trans: Set to 6.5 deg, "ok range" 5/14 deg to 7/14 deg
*Auto Trans: Set to 8.0 deg, "ok range" 6 1/2 deg to 9 deg
Outside wheel turn angle: Set to 33 deg, "ok range" 32 deg to 33 deg

Body

The YJ only comes in a 2 door model made up of a one piece tub with a swing out rear tailgate. All models have a flip forward rear bench seat and two individual front folding foward seats.

87-91 models come equiped with the "sport style" roll bar. The rear bars come down from the main hoop at a 45* angle. The rear seatbelts for these models are lap belts mounted to the floor

92-95 models come with the "family style" roll bar. The rear bars form a 90* angle directly above the rear roll bar mount creating a overhead roll bar for the rear passangers. The rear seatbelts are now attached to the roll bar and are full 3 point belts rather than lap belts.


Engines

2.5L I4 TBI (fuel injected) - 121 hp @ 5000 rpm, 135 ftlb @ 3500 rpm - used in '87-'90
2.5L I4 MPI (multi-port injection) - 130 hp @ 5250 rpm, 139 ft lb @ 3250 rpm - used in '91-'95

4.2L I6 Carburated AMC 258 - 112 hp @ 3200 rpm, 210 ft lb @ 2000 - used in '87-'90
4.0L I6 MPI AMC 242 "Power Tech HO" (High Output) - 190 hp @ 4750 rpm, 220 ft lb @ 4,000 rpm - used in '91-'95

Transmissions

Manual transmissions
AX-5 - Aisin 5-speed behind the I4 '87-'95
BA-10/5 - Peugot 5-speed behind the I6 from '87-March 9, 1989
AX-15 - Aisin 5-speed behind the I6 from March 10, 1989-'95

Automatic transmissions
TF904 - TorqueFlight Automatic behind the I4 '94-'95, prior to this, the YJ was not offered in an automatic with the I4
TF999 - TorqueFlight Automatic behind the I6

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.

NP207 - "Command-Trac" part-time only - 2.61:1 ratio low range - only in 87
NP231 - "Command-Trac" part-time only - 2.72:1 ratio low range - shift pattern 2H - 4H - N - 4L - used '88-'95

Driveshafts
Axles

Front Axles
Dana 30 high pinion - reverse cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear - used 87-95. All are vacuum disconnect, Some 95's have 5-297x u-joints due to the start of new model change over, all others have 5-260x u-joints.

Rear Axles
Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used '87-'89
Dana 35 c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used '90-'95
Dana 44 non c-clip - 30 spline, 1.31" diameter shafts, 8.5" ring gear, 2.75" axle tube - used '87-'89 on a VERY limited number of Canadian YJ's.

(Note with the Dana 35C- The "C" does not stand for c-clip. It stands for "custom" meaning it came from Dana unfinished.)

Gearing

I4 Automatic - 3.73:1
I4 Standard - 4.10:1
I6 Automatic - 3.54:1 (normally)
I6 Standard - 3.07:1, 3.54:1 or 3.73:1 - must verify with the tag on the axle or by pulling the differential cover and reading the numbers stamped in the ring gear or by counting revolutions of wheel versus driveshaft.


Trim Levels

Base: also referred to as "S"&"SE" at different points in the model run; first few years the back seat and rear bumperettes were optional, some years the 6cyl engine was an option, other years only the 4cyl was available in the "Base" model

Laredo: Chrome grille, bumpers, and trim, hard top and hard full doors, tinted windows, faux leather interior, body color fender flares and alloy wheels

Islander: which included "Sunset" Islander graphics and distinct body colors including teal and bright yellow with matching wheel flares

Sport: which featured "sport" graphics and, beginning in 1991, a 4.0L 6 cylinder engine

Sahara: which came standard with the 4.0l 242cid engine, offered the most available options, including body color fender flares, matching side steps and alloy wheels. More saharas seem to have come with an automatic transmission and air conditioning than any other trim package.

Renegade: featured a similar option package as Sahara, but added premium wheels, deluxe interior group as well as oversized "Renegade" wheel flares and body cladding

Rio Grande: available in champagne gold, moss green and white, with a southwest themed interior trim package, only the 4cyl engine was available, model was offered in the last two years of the YJ model run.

Trim levels by year:

'87- Base, Laredo, Sport

'88- Base, Islander, Laredo, S, Sahara, Sport

'89- Base, Islander, Laredo, S, Sahara

'90- Base, Islander, Laredo, S, Sahara

'91- Base, Islander, Renegade, S, Sahara

'92- Base, Islander, Renegade, S, Sahara

'93- Base, Renegade, S, Sahara

'94- Renegade, S, Sahara, SE

'95- Rio Grande, Sahara, SE

'96- Left over '95s sold as '95s.

Production Numbers

Total of 685,071 YJ's

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.

Other Resources
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