TJ rear axle options - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-06-2008, 08:54 AM   #1
Jeeper
 
Join Date: Oct 2008
Location: Lanna, Jawja
Posts: 153
TJ rear axle options

This is a common topic so I thought I'd post some facts I've found out about the 3 main options.
Super 35, Rubicon 44 and Ford 8.8
Please correct as necessary.

Super 35
semi float c-clip shafts
**NOW AVAILABLE**
Superior c-clip eliminator kit
This converts the Super35 to a 44jr.
That's right it removes the c-clips and bolts in the shafts. This is the same assembly design as the 44. With a 7.5" ring gear it's 1" small than a 44. Hence the name 44jr.
gear ratio options = 3.07, 3.55, 3.73, 4.10, 4.56, 4.88
Carrier break = 3.31 / 3.55
Locker choices
Detroit, OX, ARB, Auburn ECTED
Ring gear diameter = 7.5625"
Ring gear bolts = (8) 3/8 x 24 RH - NOTE: 7/16" used on later model TJs
Low pinion
Pinion shaft diameter = 1.406"
Pinion shaft spline count = 26
Axle shaft diameter = 1.30"
Axle shaft spline count = 30
Axle tube 2.50" x .250 wall
WMS-WMS = approximately 60.5"
5 on 4.5" bolt pattern
Cost
kits run from 700-1300
labor $250 - $500
Build time <6 hrs
bolt in upgrade

Rubicon/Sahara/Unlimited 44
(XJ44 is similar but leaf sprung)
semi float non c-clip style shafts
Standard rear axle used on all Rubicon model TJs
Gear ratio options, 3.08, 3.31, 3.54, 3.73, 4.10, 4.56, 4.88, 5.13, 5.38, 5.89
I'm not sure all ratios are available for the R44.
Lockers,
Detroit, ARB, OX, Spool, all lunchbox lockers, factory Tru-lok
Ring gear diameter = 8.5"
Ring gear bolts = (10) 7/16" x ??
Low pinion
Pinion shaft diameter = 1.376"
Pinion shaft spline count = 26
Axle shaft diameter = 1.30"
Axle shaft spline count = 30
Axle tube 2.50" x .250 wall
WMS-WMS = approximately 60.5"
5 on 4.5" bolt pattern
standard disk brakes on R44, drums on others
Cost,
used axle run 700-1300
build time, <6hrs
bolt in swap

Ford Explorer 8.8
semi float c-clip style axle, leaf sprung
C-clip eliminators and Super88 kits available
gear ratios available
2.73, 3.08. 3.27, 3.31, 3.55, 3.73, 3.90, 4.10, 4.56, 4.88, 5.13, 5.71, 6.14
No carrier break
Lockers available,
Detroit, Spool, mini-spool, OX, ARB, Auburn ECTED, Eaton E-locker, All lunchbox lockers
O.D. of tubes: 3.250".
Tube thickness: .188, there is rumor of .250
(the larger tube gives 5/8" of lift and 5/8" lower clearance under tubes.)
Ring gear diameter: 8.800".
Ring gear bolts: 7/16" dia. (qty. 10).
Pinion diameter: 1.625
Pinion spline count 30
Axle shaft: 1.31
Axle spline count 31
Overall width 59.625" (the F8.8 is .950" narrower then a TJ Dana 35).
I've been told the c-clip eliminator kit increases the track 1"

Cost,
complete axles can be had for $100 with a LSD and disk brakes.
This conversion will require welding and fabrication. Plus many additional parts.
Estimated build cost >$1000-$1200
build time >8 hrs

Ground clearance;
Measured on 35" tires on a concrete shop floor
axle - under tube - under diff
35 - 14 7/8 - 11 1/4
44 - 14 7/8 - 10 7/8
8.8 - 14 1/2 - 10 1/8

There are postings of axle shaft failure torque rating. I won't repost them here because it doesn't represent what were discussing accurately.

Never Monday is offline   Quote Quick Reply
Old 10-06-2008, 09:21 AM   #2
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
good info, thanks

__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 11-13-2014, 03:07 PM   #3
Jeeper
 
GeorgiaTJ06's Avatar
 
Join Date: Mar 2014
Posts: 185
Such an awesome post
Thanks!
GeorgiaTJ06 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear Axle seals FredF TJ Tech Forum 5 08-18-2008 05:25 PM
axle options AGRESTI8 TJ General Discussion Forum 4 11-08-2006 07:51 PM
leak on rear axle by vent hose BlackJeepoftheFamily TJ Tech Forum 6 08-27-2006 11:17 AM
8.8 rear axle mrbigjeep TJ General Discussion Forum 1 05-18-2006 05:31 PM
Front and rear axle fluid Jick TJ Tech Forum 4 03-28-2006 11:44 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:30 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC