Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

turning 27 spline 8.25 into a 29 spline??

Thread Tools
 
Search this Thread
 
Old 01-12-2010, 12:10 PM
  #1  
Senior Member
Thread Starter
 
rivercrazy's Avatar
 
Join Date: Oct 2009
Location: Redlands, CA
Posts: 502
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Cherokee
Engine: 4.0L I6
Default turning 27 spline 8.25 into a 29 spline??

My '92 XJ has a 27 spline C8.25 with 3.55 gears. I would like to eventually put an Aussie Locker with 4.10's in it. The main problem is there is not an Aussie locker for the 27 spline 8.25. I know I will need a larger carrier to go up to 4.10 gears. So if I'm already buying new gears, carrier, bearings, and an Aussie locker the only thing I missing is axles (right?).

My question is: can I swap the internals from a 29 spline (axles, carrier, pinion, etc.) into my 27 spline housing??
Old 01-12-2010, 02:35 PM
  #2  
CF Veteran
 
PingPong's Avatar
 
Join Date: Jan 2009
Posts: 2,740
Likes: 0
Received 0 Likes on 0 Posts
Year: 87
Model: Cherokee
Engine: 4.0
Default

Yes as long as you change the carrier too.
Old 01-12-2010, 02:53 PM
  #3  
Senior Member
Thread Starter
 
rivercrazy's Avatar
 
Join Date: Oct 2009
Location: Redlands, CA
Posts: 502
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Cherokee
Engine: 4.0L I6
Default

I'd have to change the carrier to go to 4.10's anyway.
Old 01-12-2010, 02:55 PM
  #4  
Senior Member
 
RENIXBEAST's Avatar
 
Join Date: Aug 2009
Location: Effingham, N.H.
Posts: 958
Likes: 0
Received 0 Likes on 0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0 I6
Default

You answered your own question.
Old 01-12-2010, 02:55 PM
  #5  
Senior Member
Thread Starter
 
rivercrazy's Avatar
 
Join Date: Oct 2009
Location: Redlands, CA
Posts: 502
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Cherokee
Engine: 4.0L I6
Default

So if I just get all the parts for a 29 spline I should be able to just swap it all out at once and not have to mess with the housing at all!
Old 01-12-2010, 03:06 PM
  #6  
Senior Member
 
sflxj's Avatar
 
Join Date: Dec 2009
Location: Fort Lauderdale
Posts: 642
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0
Default

you can keep your carrier and buy the spider gears for a 29 spline then buy the shafts and ring and pinion. if you are buying a locking diff. just buy the 29 spline and new shafts
Old 01-12-2010, 03:10 PM
  #7  
Senior Member
Thread Starter
 
rivercrazy's Avatar
 
Join Date: Oct 2009
Location: Redlands, CA
Posts: 502
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Cherokee
Engine: 4.0L I6
Default

Do you know if the bearings, shims, etc. are the same?
Old 01-12-2010, 07:53 PM
  #8  
CF Veteran
 
PingPong's Avatar
 
Join Date: Jan 2009
Posts: 2,740
Likes: 0
Received 0 Likes on 0 Posts
Year: 87
Model: Cherokee
Engine: 4.0
Default

I would say no.
Old 01-12-2010, 08:14 PM
  #9  
CF Veteran
 
offroadnut36's Avatar
 
Join Date: Aug 2008
Location: Hollidaysburg, PA
Posts: 5,603
Likes: 0
Received 0 Likes on 0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0 lt. 242 cu.in.
Default

the wheel bearings might be different but the pinion bearings should be tha same
Old 01-12-2010, 09:17 PM
  #10  
Seasoned Member
 
BigRed93xj's Avatar
 
Join Date: Sep 2009
Posts: 323
Likes: 0
Received 0 Likes on 0 Posts
Year: 1993
Model: Cherokee
Engine: 4.0
Default

Would it be cheaper to just buy a 29 spline 8.25 axle. That's what I did to replace my stock 27 spline 8.25. I got the whole axle for like $100.
Old 01-12-2010, 09:44 PM
  #11  
CF Veteran
 
winston427's Avatar
 
Join Date: Feb 2009
Posts: 5,900
Likes: 0
Received 6 Likes on 6 Posts
Model: Cherokee
Default

Originally Posted by rivercrazy
I'd have to change the carrier to go to 4.10's anyway.
The 8.25 carrier is the same for all gear ratios. It does not have to be changed like the D35 and D44.


Originally Posted by sflxj
you can keep your carrier and buy the spider gears for a 29 spline then buy the shafts and ring and pinion. if you are buying a locking diff. just buy the 29 spline and new shafts

The carrier is different for the 27 and 29 spline models. To do the conversion you need the 29 spline axle shafts, carrier and spider gears. The axle bearings are the same, the difference in the axle shaft diameter is at the step down where the splined section goes into the carrier.
Old 01-13-2010, 08:07 AM
  #12  
Senior Member
 
EndlessMtnFab's Avatar
 
Join Date: Jun 2009
Location: Blakeslee, PA
Posts: 750
Likes: 0
Received 3 Likes on 1 Post
Year: 97
Model: Cherokee
Engine: 4.7
Default

* disregard *



Checked other suppliers and I have a feeling the first supplier has some catalog mis-information.





Joe

Last edited by EndlessMtnFab; 01-13-2010 at 08:12 AM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
2heapjeeps
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
13
10-04-2015 10:52 PM
cerami50
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
13
09-14-2015 10:28 PM
shotseven
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
09-06-2015 03:06 PM
neocracka
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
09-05-2015 06:50 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: turning 27 spline 8.25 into a 29 spline??



All times are GMT -5. The time now is 10:35 AM.