Wanted: someone to tabulate Comanche data

[Pete M]

Who wants to make a DIY post with all the relevant MJ data like fluid amounts and what not? Copying the page in Chilton's that covers that is ok with me. :D

[fatcat0491]

I can make a version if no one else wants too, :D

[james750]

i would be willing to.

 

One thing to look into is to see if JF is willing to let u use their mj specs that are on their site if sources are cited.

[fatcat0491]

hmm I can't seem To Find Very Much But ill keep looking :roll:

[Eagle]

Owner's Manual?

 

Factory Service Manual?

[TNT]

You mean this post. ;)

 

Well, I just now finished up making the stock specs, hope everything is in order.

 

Common Design

 

All MJs were built as a full unibody design with the body and frame rails tied/welded together as one piece and cannot be removed, however, the rear is a fully boxed frame with the bed bolted to it, making the bed removable. All MJs have solid axles front and rear. The suspension consists of coils for the front and leaf springs for the rear. All MJs came with disc brakes in the front and drums in the rear.

 

Also, all MJ's through all years are equipped with a height sensing proportioning valve that is used to change the bias of the brakes if the bed had a load in it.

 

For those curious to the differences in Cherokee's and Comanche's:

 

The taillight lenses are different from a Cherokee's, the wheel flares are the same (as a 2dr Cherokee), the front doors off of 4-door XJ's (84-92 at least) are swappable, hoods are swappable from 84-92 models Cherokee's (Cherokee's above 92 used spring-loaded hinges), and all mechanical/electronic parts forward of the firewall ARE identical.

 

Body

 

The body comes only in standard cab model with a rear double-top hatch tailgate. Comes in longbed or shortbeds two-tone versions. Long bed versions come with a larger gas tank than the short bed and is located front of the axle. Short bed version was not avaiable in 1986.

 

Interior: Door panels are removable as stock. Bench seats and bucket seats DO NOT have the same mounting brackets as XJ seats. Gauge cluster is removed by 4 screws. Gauge cluster during 86' have mechanical-powered gauges. On 87-90 gauges, The speedometer uses a cable, but all gauges 91-92 use a computer cable.

 

Wheelbase:

 

short bed 2wd=113.1 4wd=112.9 (18 gal tank)

long bed 2wd=119.6 4wd=119.4 (16 gal [longbed, opt shortbed] 23.5 gal [opt longbed; standard from 1989])

 

Engines

 

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 became MPI in 91 and was rated for 130hp @ 5250 and 149 ftlb @ 3250) ---

Quote:

Fuel Miser package was available, lowering the HP

to 100hp and included a 4 speed manual trans, no tail gate, undercoating, and 3.31 axle gears. the 4x4 Miser got the same treatment as well as no spare tire or brackets.

 

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

 

Italian VM 2.8L Turbo Diesel - 140 hp, 236 ft lb torque - used in overseas MJs

 

2.1L 4 cylinder Turbo Diesel - 85 hp, 132 ft lb torque.

 

4.0L I6 EFI "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 91-92

 

Transmissions

 

Manual Transmissions

AX4 - 4 speed manual - manufactured by Aisin - used 86-92 with 2.5L I4 and 2.8L V6 engines and 2.8L turbo-diesels

T4 & T5 - 4 & 5 speed manual - manufactured by Borg Warner - used only in 86 with 2.5L I4 and 2.8L V6 engines

BA10/5 - 5 speed manual - manufactured by Peugeot - used only up to 89

AX5 - 5 speed manual - manufactured by Aisin - used with 2.8L V6 and 87+ with 2.5L I4

AX15 - 5 speed manual - manufactured by Aisin - used with 4.0L I6 engines

 

Automatic Transmissions

Torqueflight 904 - 3 speed automatic - used only in 86 with 2.8L V6 and 2.5L I4 engines and 2.8L turbo-diesels

AW4 - 4 speed automatic, electronically controlled - manufactured by Aisin - used from 87-92 (87-92 models include a Power/Comfort button that adjusts the shift points, also known as a towing package; all transmissions came with the towing package and came with a transmission cooler; 88+ models used Power/Comfort switch for off-roading)

 

Pete M implied information about this that might override anything written above, where his information is correct. It was too hard for me to take his info and add it in, atleast for now...

 

 

Quote:

Originally Posted by Pete M

The "Metric Tonne" or "Big Ton" or "payload package" was designed for hauling, was only available on longbeds, and consisted of an AMC-20 rear axle in 86, Dana 44 rear axle in 87-92, heavier duty springs front and rear, tougher shocks, the larger tires, fullsize spare and 15x7 wheels. In the AMC-20, the only gear ratio was 4.10, Dana 44s got stuck with the standard ratio available with the specified drivetrain combo (3.08 for 4.0l/manual, 3.54 for 4.0l/autos, and 4.09 for 2.5l/manuals).

 

 

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 - used 86

NP231 - "Command-Trac" part-time only - 2.72:1 ratio low range - shift pattern 2H - 4H - N - 4L - used 87-92

NP228 - "Select-Trac" part-time OR full-time - 2.6:1 ratio low range - used 86

NP242 - "Selec-Trac" part-time OR full-time - 2.72:1 ratio low range - shift pattern 2wd - 4part-time - 4full-time - N - 4LO - used 87-92

 

Driveshafts

 

Front Driveshaft - On 86-87 MJs (NP207 t-case) the front shaft is a "GKN" style shaft. On 87-92 MJs (NP231/242 t-case) the front is a "double cardan" two-piece driveshaft with a CV joint at the transfer case end.

 

Rear Driveshaft - 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 86-92 models, the yoke slides in and out of the transfer case and is lubricated by the ATF fluid internally.

 

This information might override what's written on the rear-driveshaft, but has no method of being added in as 'stock'

 

 

Quote:

Originally Posted by Pete M

Actually, there were 2 different styles of rear shaft offered, though I have yet to determine a logical pattern behind which MJ got which. The other one was a 2-piece design, but not the usual 2-piece you're thinking of where one side slips on the other. The MJ 2-piece had a large outer tube on the transmission side and a smaller tube on the axle side. They are fused together with a thick rubber isolator designed to reduce vibrations.

 

Axles

 

Front Axles

 

Dana 30 high pinion - reverse cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear - used 86-92 (all axles are vacuum disconnect, and have 5-260x u-joints)

 

Rear Axles

 

AMC-20 - 29 Spline, one piece axle shafts, 8.875" Ring Gear; Metric Tonne axle in 86.

Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 86-89

Dana 35 c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 89-92

Dana 44 non c-clip - 30 spline, 1.31" diameter shafts, 8.5" ring gear, 2.75" axle tube - used 87-89 on some(not all) MJs equipped with towing package.

(note for D44's: All MJ's equipped with the stock D44 come with the Metric Ton Package)

 

All rear axles are made of a spring under axle design.

 

Gearing

 

3.07 - used with 4.0L engine / manual transmission

3.31 - used with 2.5L Fuel Miser option

3.55 - used with 4.0L engine / automatic transmission

4.10 - used with 2.5L engine usually

4.56 - rare but can be found on some older (~ 89 ~) models with 2.5L engine and auto transmission

 

NOTE:

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 MJs.

 

Airbags

 

No airbags during Comanche timeline.

 

Trim Levels

 

86 - Custom, X, XLS

87 - Base, Pioneer, Chief, Laredo, SporTruck

88 - Base, Pioneer, Chief, Laredo, Eliminator, SporTruck

89 - Base, Pioneer, Chief, Laredo, Eliminator, SporTruck

90 - Base, Pioneer, Chief, Laredo, Eliminator, SporTruck

91 - Base, Laredo, Eliminator, SporTruck

92 - Base, Laredo, Eliminator, SporTruck

 

Production Numbers

 

MJ (4x4 only)

 

SWB/LWB

1986 23,251/xxxxx

1987 6,199/6,685

1988 6,895/9,167

1989 5,354/5,021

1990 3,283/2,129

1991 5,188 (TOTAL)

1992 3,142 (TOTAL)

 

A little info on dimensions:

 

 

Quote:

Originally Posted by Pete M

Overall length was 179.3" for shortbeds, 194.0" for longbeds

Overall curb height was 63.7" for 2wds, 64.7" for 4wds

Track width was 57" with the 15x6 rims, 58" with the 15x8s

Body width at the rear flares was 71.7"

Length of inside of box at the floor was 73.7" sb and 88.5" lb

Width of box at the floor is 55.3" for both sb and lb

Width between wheel wells is 43.8"

Box depth is 16.4"

 

This is a edited copy of the XJ stock specs. If anything here is incorrect or if you would like to add the dimensions and production numbers, please post info

 

The OTHER notes section!!!

 

 

Quote:

Originally Posted by Pete M

Curb weight for the 2wd short bed was 2912

4wd sb was 3076

2wd lb was 2959

4wd lb was 3141

 

Payload for stock MJs is 1475 lbs (1200 for 86), Metric Tonne was 2205 lbs. The maximum tow rating an MJ was ever given was 5000 lbs (4.0L required). 2.5Ls seem to have been limited to 2000 lbs and 2.8Ls were 4200. I cannot find any rating listed for the stock bumper. Every brochure mentions a class 1,2,3 hitch needs to be installed for towing.

 

Special thanks to: cj7xjmj, Pete M, krodeMJ, MJDriver, Drahcir495, Guumba, 1986Comanche, and Snowplow.

 

 

I believe the members here have contributed to it being made...

 

Well, I just now finished up making the stock specs, hope everything is in order.

 

Common Design

 

All MJs were built as a full unibody design with the body and frame rails tied/welded together as one piece and cannot be removed, however, the rear is a fully boxed frame with the bed bolted to it, making the bed removable. All MJs have solid axles front and rear. The suspension consists of coils for the front and leaf springs for the rear. All MJs came with disc brakes in the front and drums in the rear.

 

Also, all MJ's through all years are equipped with a height sensing proportioning valve that is used to change the bias of the brakes if the bed had a load in it.

 

For those curious to the differences in Cherokee's and Comanche's:

 

The taillight lenses are different from a Cherokee's, the wheel flares are the same (as a 2dr Cherokee), the front doors off of 4-door XJ's (84-92 at least) are swappable, hoods are swappable from 84-92 models Cherokee's (Cherokee's above 92 used spring-loaded hinges), and all mechanical/electronic parts forward of the firewall ARE identical.

 

Body

 

The body comes only in standard cab model with a rear double-top hatch tailgate. Comes in longbed or shortbeds two-tone versions. Long bed versions come with a larger gas tank than the short bed and is located front of the axle. Short bed version was not avaiable in 1986.

 

Interior: Door panels are removable as stock. Bench seats and bucket seats DO NOT have the same mounting brackets as XJ seats. Gauge cluster is removed by 4 screws. Gauge cluster during 86' have mechanical-powered gauges. On 87-90 gauges, The speedometer uses a cable, but all gauges 91-92 use a computer cable.

 

Wheelbase:

 

short bed 2wd=113.1 4wd=112.9 (18 gal tank)

long bed 2wd=119.6 4wd=119.4 (16 gal [longbed, opt shortbed] 23.5 gal [opt longbed; standard from 1989])

 

Engines

 

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 became MPI in 91 and was rated for 130hp @ 5250 and 149 ftlb @ 3250) ---

Quote:

Fuel Miser package was available, lowering the HP

to 100hp and included a 4 speed manual trans, no tail gate, undercoating, and 3.31 axle gears. the 4x4 Miser got the same treatment as well as no spare tire or brackets.

 

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

 

Italian VM 2.8L Turbo Diesel - 140 hp, 236 ft lb torque - used in overseas MJs

 

2.1L 4 cylinder Turbo Diesel - 85 hp, 132 ft lb torque.

 

4.0L I6 EFI "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 91-92

 

Transmissions

 

Manual Transmissions

AX4 - 4 speed manual - manufactured by Aisin - used 86-92 with 2.5L I4 and 2.8L V6 engines and 2.8L turbo-diesels

T4 & T5 - 4 & 5 speed manual - manufactured by Borg Warner - used only in 86 with 2.5L I4 and 2.8L V6 engines

BA10/5 - 5 speed manual - manufactured by Peugeot - used only up to 89

AX5 - 5 speed manual - manufactured by Aisin - used with 2.8L V6 and 87+ with 2.5L I4

AX15 - 5 speed manual - manufactured by Aisin - used with 4.0L I6 engines

 

Automatic Transmissions

Torqueflight 904 - 3 speed automatic - used only in 86 with 2.8L V6 and 2.5L I4 engines and 2.8L turbo-diesels

AW4 - 4 speed automatic, electronically controlled - manufactured by Aisin - used from 87-92 (87-92 models include a Power/Comfort button that adjusts the shift points, also known as a towing package; all transmissions came with the towing package and came with a transmission cooler; 88+ models used Power/Comfort switch for off-roading)

 

Pete M implied information about this that might override anything written above, where his information is correct. It was too hard for me to take his info and add it in, atleast for now...

 

 

Quote:

Originally Posted by Pete M

The "Metric Tonne" or "Big Ton" or "payload package" was designed for hauling, was only available on longbeds, and consisted of an AMC-20 rear axle in 86, Dana 44 rear axle in 87-92, heavier duty springs front and rear, tougher shocks, the larger tires, fullsize spare and 15x7 wheels. In the AMC-20, the only gear ratio was 4.10, Dana 44s got stuck with the standard ratio available with the specified drivetrain combo (3.08 for 4.0l/manual, 3.54 for 4.0l/autos, and 4.09 for 2.5l/manuals).

 

 

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 - used 86

NP231 - "Command-Trac" part-time only - 2.72:1 ratio low range - shift pattern 2H - 4H - N - 4L - used 87-92

NP228 - "Select-Trac" part-time OR full-time - 2.6:1 ratio low range - used 86

NP242 - "Selec-Trac" part-time OR full-time - 2.72:1 ratio low range - shift pattern 2wd - 4part-time - 4full-time - N - 4LO - used 87-92

 

Driveshafts

 

Front Driveshaft - On 86-87 MJs (NP207 t-case) the front shaft is a "GKN" style shaft. On 87-92 MJs (NP231/242 t-case) the front is a "double cardan" two-piece driveshaft with a CV joint at the transfer case end.

 

Rear Driveshaft - 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 86-92 models, the yoke slides in and out of the transfer case and is lubricated by the ATF fluid internally.

 

This information might override what's written on the rear-driveshaft, but has no method of being added in as 'stock'

 

 

Quote:

Originally Posted by Pete M

Actually, there were 2 different styles of rear shaft offered, though I have yet to determine a logical pattern behind which MJ got which. The other one was a 2-piece design, but not the usual 2-piece you're thinking of where one side slips on the other. The MJ 2-piece had a large outer tube on the transmission side and a smaller tube on the axle side. They are fused together with a thick rubber isolator designed to reduce vibrations.

 

Axles

 

Front Axles

 

Dana 30 high pinion - reverse cut - 27 spline, 1.16" diameter shafts, 7.13" ring gear - used 86-92 (all axles are vacuum disconnect, and have 5-260x u-joints)

 

Rear Axles

 

AMC-20 - 29 Spline, one piece axle shafts, 8.875" Ring Gear; Metric Tonne axle in 86.

Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 86-89

Dana 35 c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 89-92

Dana 44 non c-clip - 30 spline, 1.31" diameter shafts, 8.5" ring gear, 2.75" axle tube - used 87-89 on some(not all) MJs equipped with towing package.

(note for D44's: All MJ's equipped with the stock D44 come with the Metric Ton Package)

 

All rear axles are made of a spring under axle design.

 

Gearing

 

3.07 - used with 4.0L engine / manual transmission

3.31 - used with 2.5L Fuel Miser option

3.55 - used with 4.0L engine / automatic transmission

4.10 - used with 2.5L engine usually

4.56 - rare but can be found on some older (~ 89 ~) models with 2.5L engine and auto transmission

 

NOTE:

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 MJs.

 

Airbags

 

No airbags during Comanche timeline.

 

Trim Levels

 

86 - Custom, X, XLS

87 - Base, Pioneer, Chief, Laredo, SporTruck

88 - Base, Pioneer, Chief, Laredo, Eliminator, SporTruck

89 - Base, Pioneer, Chief, Laredo, Eliminator, SporTruck

90 - Base, Pioneer, Chief, Laredo, Eliminator, SporTruck

91 - Base, Laredo, Eliminator, SporTruck

92 - Base, Laredo, Eliminator, SporTruck

 

Production Numbers

 

MJ (4x4 only)

 

SWB/LWB

1986 23,251/xxxxx

1987 6,199/6,685

1988 6,895/9,167

1989 5,354/5,021

1990 3,283/2,129

1991 5,188 (TOTAL)

1992 3,142 (TOTAL)

 

A little info on dimensions:

 

 

Quote:

Originally Posted by Pete M

Overall length was 179.3" for shortbeds, 194.0" for longbeds

Overall curb height was 63.7" for 2wds, 64.7" for 4wds

Track width was 57" with the 15x6 rims, 58" with the 15x8s

Body width at the rear flares was 71.7"

Length of inside of box at the floor was 73.7" sb and 88.5" lb

Width of box at the floor is 55.3" for both sb and lb

Width between wheel wells is 43.8"

Box depth is 16.4"

 

This is a edited copy of the XJ stock specs. If anything here is incorrect or if you would like to add the dimensions and production numbers, please post info

 

The OTHER notes section!!!

 

 

Quote:

Originally Posted by Pete M

Curb weight for the 2wd short bed was 2912

4wd sb was 3076

2wd lb was 2959

4wd lb was 3141

 

Payload for stock MJs is 1475 lbs (1200 for 86), Metric Tonne was 2205 lbs. The maximum tow rating an MJ was ever given was 5000 lbs (4.0L required). 2.5Ls seem to have been limited to 2000 lbs and 2.8Ls were 4200. I cannot find any rating listed for the stock bumper. Every brochure mentions a class 1,2,3 hitch needs to be installed for towing.

 

Special thanks to: cj7xjmj, Pete M, krodeMJ, MJDriver, Drahcir495, Guumba, 1986Comanche, and Snowplow.

[Pete M]

I was thinking more of: the 4.0L takes 6 quarts of oil, etc.

[LEAD_NOT_FOLLOW]

Here how about this. ;)

 

 

I have a few more things very similar with additional info I will post later if you guys want them.

[james750]

looks pretty good except there was no comanche in 84-85 as shown in ur post. :roll:

[Imperial21]

Looks good! I was reading some stuff in the post and looking at the build sheet I had printed out for my '91 LWB---two options that struck me funny were: ALA--SE decor Group, and Z5B--Payload Rating 1800lbs. Any ideas about those? is the SE the Sportruck? why would the payload be different?:Canadaflag:

[Xacto]

Here's a page from the 89 FSM:

 

[Motion Offroad]

http://comancheclub.com/forums/viewtopic.php?t=10054