Jeep Cj Torque Specs



Universal Jeep Model CJ-3B

  • G.V.W. 3500 lbs. (1587.5 kg)
  • Curb weight: 2243 lbs (1017.4 kg) (2418 lbs. on M606).
  • Overall length: 129-29/32 in. (3.30 m)
  • Overall width: 68-7/8 in. (175 cm)
  • Overall height (top of windshield): 66-1/4 in. (169 cm.)
  • Tread front and rear: 48-7/16 in. (123 cm)
  • Wheelbase: 80 in. (203 cm.)
  • Front / Rear Overhang: 20.59 in. / 22.31 in.
  • Tailgate: 36 in. Wide x 19.25 in. High
  • Ground Clearance: 8 in. (20.3 cm)
  • Load Space: 32 in. x 52.315 in. x 14.125 in.

See CJ-3B Drawings for more dimensions.

Differential Torque Values. Preload Specs.005.009: 105: 87: Chrysler 8.25'. Throughout this website the terms Jeep®, Wrangler®, Rubicon®, CJ®, Mopar. . All specifications taken from Your Operation and Care Manual Universal Jeep Model CJ-2A (second edition) copyright 1946 by Willys-Overland Motors, Inc. Next page in Operations Manual Return to Operations Manual Contents. Return to the CJ3A Page.

  • Engine: 'Hurricane' F-head, 134 cu.in. (2.2 liter), 4 cylinders
  • Cooling system capacity 11 qt. (10.4 ltr.) (12 qt. with heater)
  • Electricity: Battery 50 Amp. Hour 12 volt, Generator 35 Amp.
  • Front axle: Dana/Spicer 25 (until 1961) 27 or 27A, Full-floating hypoid, Ratio: 4.27:1 (5.38:1 optional)
  • Rear axle: Dana/Spicer 44, Semi-floating hypoid, Ratio: 4.27:1 (5.38:1 optional)
  • Brakes: Hydraulic, 9 in. drum diameter x 1.75 in., 117.8 sq. in. braking area.
  • Clutch: 8.5 in. Auborn or Rockford single dry plate with torsional damping, 72 sq. in. area. (Optional Auborn single dry plate, 9.25 in. dia. )
  • Transfer case: Spicer 18, 2 speeds, 1.00:1 and 2.46:1 (26 tooth input gear and 1-1/8 in. intermediate shaft up to serial number 54-12506; 29 tooth input gear and 1-1/4 in. intermediate shaft after serial number 54-12506)
  • Transmission: Warner T-90 3-speed syncromesh, Ratios: 1st-3.339:1 (or 2.798:1), 2nd-1.551:1, 3rd- 1.00:1, Reverse-3.798:1

The plate (10-1/4 x 2-1/4 in.) found on the passenger side of the dashboard lists maximum speeds for all gears. (Reproduction plates in various styles are available from www.dataplates4u.com.)

  • Frame: Heavy steel channel sides, 4.125 in. depth x 1.937 in. width, with 6 cross members (possibly five on early models). Length 122.656 in.
  • Fuel tank 10-1/2 gallons (38.75 ltr.)
  • Shock absorbers: Telescopic hydraulic. Monroe, 10.75 in. dia. double acting.
  • Springs: Semi-elliptical leaf type. Front: 36 1/4 in. x 1 3/4 in., 10 leaves, Rate 260 lb./in. Rear: 42 in. x 1 3/4 in., 9 leaves, Rate 190 lb./in. (Optional 11-leaf Heavy-Duty, Spring Rate: 225 lb./in.), (10 leaves, Rate 400 lb./in. on some M606 models).
  • Steering: Cam and lever, overall ratio 17.9 to 1 (Ross Model T-12 with 14-12:1 ratio on early models)
  • Tires: 6.00x16: 4 ply (7.00x15 optional, also 7.00x16 on military M606 version)
  • Wheels: Kelsey-Hayes 4.50x16 inch, 5 stud

Instrumentation

Ammeter, Heat Indicator Gauge, Speedometer, Oil Pressure Gauge, Fuel Level Gauge. The small speedometer (similar to the CJ-2A and CJ-3A) used in early models was manufactured by King-Seeley (KS). An Auto-Lite unit was used in Jeeps that registered in kilometers.

Starting as early as serial number 57348-34422 in the 1957 model year, a new larger speedometer/instrument cluster was used. Through serial number 57348-35521 it was a King-Seeley, and begining with 35522 there were Stewart-Warner (SW) units in 6 and 12-volt, and miles and kilometers.

For more details on part numbers and applications for KS and SW instruments according to serial number, see DJ-3A (and CJ-3B) Speedometers. See also these pages of the 1962 Jeep Universal Parts List (100K JPEG):

  • page 77 (200K JPEG)
  • page 78 (120K JPEG)
  • page 79 (130K JPEG)
  • page 80 (100K JPEG).
Torque

Compared to Other Jeeps

(From Jeep vehicles and equipment, Willys Form #W-992-5)

Technical Information Sources


The above information comes from the Haynes manual (Jeep CJ:1949 thru 1986), the Chilton manual (Jeep: 1945 to1987), and the Kaiser Jeep Universal Service Manual (1965).

Jeep

Jeep Wrangler Bolt Torque Specs

See the CJ3B Bookshelf for other useful books.

See Specs and Tech Tips on CJ3B.info, and the CJ-3B Bulletin Board for answers to questions.

JeepBook.com has a variety of original Jeep manuals and literature.

Reprints of Parts, Service and Owner's Manuals are available from Original Reproductions.

Download Parts and Service Manuals in PDF form at Willys Manuals.

Visit CJ3B.info on Facebook.

CJ3B Home Contents Search Links 3A and 3B Community

Last updated 19 May 2017 by Derek Redmond redmond@cj3b.info
https://cj3b.info/Specs.html
All content not credited and previously copyright, is copyright Derek Redmond

Jeep Cj Torque Specs Camshaft

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

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

Jeep Central
From Jeep History to Tech Specs and Projects. This section is all about Jeeps.
Jeep Technical Info
▫ Engines
▫ Transmissions
▫ Transfercases
▫ Axles
Engine Swaps

ATV World
ATV Clubs
ATV Tire FAQs
ATV Tire Mounting
Cool ATV Products
LiteFoot Track Sys
ATV Lift Installs
Quad Tire Reviews
ATV Laws By State
ATV Repair
ATV Manuals

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.


Trailering Safety and Trailer Hitch Information


Installing 23,000 Volt Offroad Lights

Warn 9500i Winch Installation

HEI Ignition
Installation & Review

Troubled
Computer?

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

Tera Low 20
for the Dana 20

From the
Department of Cheap Tricks and Useful Tips

Ultra-Cool Hand Throttle for Free!

Jeep V8 Swap Tips

The Exploding Clutch

Radiator Protection using 6 bucks worth of material

Cracked Under Pressure - Fixing a smashed fingernail

A Cheap, effective alternative to undercoating

Home-built Saginaw Gearbox Brace for the cost of lunch!

Home-built Serious Skid-Plate protection for the Oil Pan for under 20 bucks!

Main >> Engine >> Factory >> AMC 258 I6

The AMC 258 was introduced in 1971 in J-series pickups and Wagoneers and in 1972 in CJs. It continued to be used through 1990 in the Wrangler. It is basically a stroked 232 engine; some background about the AMC inline 6s (I6s) is given in the article about the 232. The great thing about this engine is it reliable, inexpensive, and has horse power and torque peaks at low RPM.

The 258 has a cast iron block and cylinder head, hydraulic lifters (with non-adjustable rockers), 7 main bearings, and cast iron crankshaft and rods. The 258 I6 engine was always carbureted from the factory. The 1-barrel engines came with the Carter YF carburetor, and the 2-barrel engines came with the Carter BBD. Many people complain about the Carter BBD carburetor and the maze of emissions vacuum hoses. There are a couple of articles below that can help you sort through those hoses and tune the Carter BBD. For a carbureted engine, the 258 with the Carter BBD performs very well off road.

There are two generations of 258 engines. The first generation was introduced in 1971. This earlier engine has cast iron intake and exhaust manifolds with the two manifolds bolted together by 4 bolts and a gasket between. In 1981, AMC revised the 258 for lighter weight. A new block casting and fewer crankshaft counterweights were used. A new smoother exhaust manifold and aluminum intake manifold were introduced. V-belts were replaced with a serpentine belt, and a new lightweight plastic valve cover was fitted. Although these two generations have the same bellhousing and motormount attachments, and are mostly the same internally, the differences must be kept in mind when choosing used replacement parts.

The 258 can be identified by the 4th character of the engine build date code ('A', 'B', 'C' or 'M'), stamped into the engine block below and between the number 2 and 3 spark plugs. An engine stamped with 'B' is an early 258 with a 7.6:1 compression ratio. 'A' and 'B' are engines with 1-barrel carburetors, while 'C' and 'M' are 2-barrel. 'M' originated in Mexico. Other codes ('E', 'F', 'K' and 'L') are 232 engines.

The 258 used in '87-'90 Wrangler YJs uses a computer controlled Carter BBD. It is very simlar to the 258 used in '82-'86 CJs, but performance suffers due to emmission controls.

The 4.0 L (3956 cc) straight-6 was an evolution of the 258 and 150 and appeared in 1987. It had the same 3.88 (98.4 mm) bore as the 150 with a longer 3.41 in (86.7 mm) stroke. The 4.0 has been discontinued at the end of the 2006 model year as the Jeep Wrangler will instead get Chrysler's 3.8 L OHV V6. This is at the same time other manufacturers are introducing new I-6 engines.
The first 4.0 engines in 1987 had RENIX (Renault/Bendix) engine control systems, which were quite advanced for their time, but are now handicapped because there are very few scan tools which can be 'plugged in' to a RENIX system for diagnosis. The Renix also used a very advanced engine knocking sensor that allowed the computer to make the appropriate changes to prevent predetonation in each cylinder.
In 1991 Chrysler Corporation, then the owners of the Jeep brand, redesigned the engine control computer and the intake ports; the camshaft profile was also changed. The result was an engine that made 190 hp (142 kW) and 225 ft·lbf (305 N·m) of torque.
Small changes were made to the cylinder head for the 1995 model year. In 1996, the engine block was updated, it made use of more webbing cast into the block, and a stud girdle for added rigidity of the crankshaft main bearings.
The cylinder head was again changed in 1998 to a lower flowing, but more emissions friendly, design.
This engine was used in the following vehicles::
1987-2001 Jeep Cherokee
1993-2004 Jeep Grand Cherokee
1987-1990 Jeep Wagoneer
1987-1992 Jeep Comanche
1991-2006 Jeep Wrangler

AMC 258 I6
Bore x Stroke3.75' x 3.90'
Displacement258 (4.2L)
Compression Ratio9.2:1
Horsepower (net)112@3200
Torque (net)210@2000
Main Bearings7
Valve ConfigurationOHV
Fuel2bbl Carter BBD

The 258 used in '82-'86 CJs used a computer controled Carter BBD. The computer controls mixture based on an O2 sensor and other sensors.

AMC 258 I6
Bore x Stroke3.75' x 3.90'
Displacement258 (4.2L)
Compression Ratio9.2:1
Horsepower (net)115@3200
Torque (net)210@1800
Main Bearings7
Valve ConfigurationOHV
Fuel2bbl Carter BBD

The 258 used in '79-'81 CJs, some used a 1bbl carb and some used a 2bbl carb.

AMC 258 I6
Bore x Stroke3.75' x 3.90'
Displacement258 (4.2L)
Compression Ratio8.3:1
Horsepower (net)110@3500
Torque (net)195@2000
Main Bearings7
Valve ConfigurationOHV
Fuel1bbl and 2bbl

The 258 used in '72-'78 CJs, J-series pickups, and Wagoneers, some used a 1bbl carb and lower compression than later 258s.

AMC 258 I6
Bore x Stroke3.75' x 3.90'
Displacement258 (4.2L)
Compression Ratio8.0:1
Horsepower (net)110@3500
Torque (net)195@2000
Main Bearings7
Valve ConfigurationOHV
Fuel1bbl

The 258 was introduced in 1971 as the standard engine in J-series pickups and Wagoneers.

AMC 258 I6
Bore x Stroke3.75' x 3.90'
Displacement258 (4.2L)
Compression Ratio8.5:1
Horsepower (gross)150@3800
Torque (gross)240@1800
Main Bearings7
Valve ConfigurationOHV
Fuel1bbl Carter or Holley

Pictures


The Jeep 258 straight 6 cylinder engine.
Photo courtesy Rick Boiros.


AMC 258 Passenger Side.
Photo by Kirk Beasley.


AMC 258 Front.
Photo by Kirk Beasley.

All text is available under the terms of the GNU Free Documentation License.
Simple HTML for this page here.

Jeep Wrangler JK
Jeep Wrangler JK Specs
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 Mud King XT
BFGoodrich MT T/A KM2
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/T?
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
Mud Tire Reviews


Rausch Creek
Off-Road Park


Wheeling in the Valley of the Ferns


Tellico North Carolina


Paragon Adventure Park
Rock Krawl

Thousands more
photos here.?
Is ablebits free.

JEEP CJ
AXLE SWAP

Jeep CJ Axle Swap using
Scout II Dana 44 Axles

Building a Garage?
Need a Garage Plan?