Go Back   DodgeForum.com > Dodge SUVs > Dodge Durango > 1st Gen Durango
Sign in using an external account
Register Forgot Password?


1st Gen Durango 1998 - 2003 Durango's

positraction

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 02-26-2010, 12:47 PM
winkie74 winkie74 is offline
Professional
1999 Dodge Durango
 
Join Date: Jan 2010
Posts: 164
Default positraction

I was looking at getting a positraction differrential for my 1999 5.2 Durango. I dont know much about differentials so i was wondering if anyone would recommend a certain type. Thanks.
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 02-26-2010, 04:36 PM
95_318SLT's Avatar
95_318SLT 95_318SLT is offline
Champion
1995 Dodge Dakota
My Garage
 
Join Date: May 2008
Vehicle: 1995 Dodge Dakota SLT 5.2L V8 4x4 5 Speed Club Cab
Location: Apex, NC
Posts: 4,842
Default

Well first of all, what do you use your truck for most often?

There are a few types of "positraction" differentials. There are limited slip differentials, lockers and spools. I'm going to guess you don't want a spool!

Limited slip differentials are built similar to open differentials but have clutch packs to control the torque split between the two wheels. If your truck never really sees any offroad use, it is all you really need on road because they still allow the wheels to differentiate under power.

Lockers are a different animal. Most of the work where they lock up to a 50-50 power split while under load and unlock when there is no load present. This allows the wheels to differentiate through a turn as long as you don't have too heavy of a foot on the gas pedal. If you are pressing the gas pedal too hard, for example, turning right from a stop sign or traffic light, you can easily lock up the locker and cause one wheel to be pulled through the turn, causing accelerated tire wear. These are much better for offroad use because if you got in a situation where one wheel was completely off the ground, the other wheel would get power, whereas most limited slip differentials would slip.

If all you want is a limited slip diff, the easiest thing for you to do is to find one in a junkyard and swap the entire axle assembly! This will prevent you from having to re-set the carrier bearing preload and ring gear backlash.

If you want a locker, they make "lunchbox lockers" like the powertrax no-slip that replace the guts of an open differential case so you can install them without removing the carrier and again avoid setting bearing preload and backlash.

If you aren't opposed to getting in that deep with a differential install, or don't mind paying someone else to do it, there are several other options for aftermarket LSD units like Auburn Gear Differentials and full lockers like Detriot lockers, but its debatable as to how much better or stronger they really are.
__________________
"If you ain't breakin' stuff, you ain't drivin' hard enough"



Last edited by 95_318SLT; 02-26-2010 at 10:29 PM..
Reply With Quote
  #3  
Old 02-28-2010, 12:21 PM
winkie74 winkie74 is offline
Professional
1999 Dodge Durango
 
Join Date: Jan 2010
Posts: 164
Default

mainly just daily driving, but i occasionally race and do some off-roadin and its a biatch to get going off the start and nearly impossible when theres water or ice on the road. That wheel just spins and spins. Thanks. I think im gonna go with a limited slip differential. Ive heard there are different sizes, if heard of 8.25, 8.25 dropout, 9.25, 9.25 AAM. What do they mean?
Reply With Quote
  #4  
Old 02-28-2010, 05:17 PM
95_318SLT's Avatar
95_318SLT 95_318SLT is offline
Champion
1995 Dodge Dakota
My Garage
 
Join Date: May 2008
Vehicle: 1995 Dodge Dakota SLT 5.2L V8 4x4 5 Speed Club Cab
Location: Apex, NC
Posts: 4,842
Default

Well there are two axles Dodge used on the Dakotas (I don't know if both were used on the Durangos as well)... the corporate 8.25" and corp. 9.25". I've never heard of "dropout" or "AAM", so I don't know what to tell you. Just look for a differential carrier for a Chrysler 8.25 (if you have a 10 bolt oval diff cover) or Chrysler 9.25 (if you have an octagonal 12 bolt cover).
__________________
"If you ain't breakin' stuff, you ain't drivin' hard enough"


Reply With Quote
  #5  
Old 02-28-2010, 07:23 PM
winkie74 winkie74 is offline
Professional
1999 Dodge Durango
 
Join Date: Jan 2010
Posts: 164
Default

Thanks for the info. I got a 8.25 10 bolt.
Reply With Quote
  #6  
Old 02-28-2010, 07:41 PM
hydrashocker's Avatar
hydrashocker hydrashocker is offline
Hall Of Fame
Garage is empty, add now
 
Join Date: Jun 2005
Vehicle: 99' Ram 2500 V-10 Sport QC 4X4
Location: Grand Junction, CO
Posts: 13,947
Default

There are 2 different axles.

8.25 Open 355 gearing only.

9.25 Open and LS with 392 gearing and also 355 from what I understand.

Also the 9.25 also came with a Track-Loc Limited Slip as an option. It was available in 392 gearing only.

If you want to swap out then you need to ensure that you have 392 gearing in the front and a 9.25" corporate axle in the back then get a 9.25 LS rear end and you would also have to change out the pinion from the donor, if you want a clean swap over.

Also you can swap out the LS clutch pack for a posi if you want.
__________________

Moto: I don't take sides, I hate everyone equally --- #1 V10 Club Member V10 Club

AKA....The Durango Section Godfather
Reply With Quote
  #7  
Old 02-28-2010, 09:09 PM
shrpshtr325's Avatar
shrpshtr325 shrpshtr325 is offline
THE ULTI-MOD
Dodge Forum Moderator
2002 Dodge Durango
My Garage
 
Join Date: Jan 2007
Vehicle: 2013 Challenger R/T
Location: Toms River NJ
Posts: 19,007
Send a message via AIM to shrpshtr325
Default

yes hydra, the 9.25 rear DID come with 3.55s in it (ask me how i know, PLEASE!!!!!! )

and everything hyrda said is 100% correct
__________________


-Phillip's Law: Four-wheel-drive just means getting stuck in more inaccessible places.

bikes?
live in NJ?
REAR WIPER CLUB MEMBER #2

Quote:
altair: I need something that lets me stab people in the face over the internet
Reply With Quote
  #8  
Old 02-28-2010, 10:22 PM
95_318SLT's Avatar
95_318SLT 95_318SLT is offline
Champion
1995 Dodge Dakota
My Garage
 
Join Date: May 2008
Vehicle: 1995 Dodge Dakota SLT 5.2L V8 4x4 5 Speed Club Cab
Location: Apex, NC
Posts: 4,842
Default

+1, the 9.25" came with 3.55s. I know this because the rear axle under my '95 Dakota came out of a 2001 Durango. I put a trac-lok in it, so now I have 3.55 LS.

But just to add to hyrdashockers comment, you don't have to have a 9.25" in the back from the factory!! You do have to match the gearing, but you can put a 9.25" in there to replace the smaller and weaker 8.25". Its a direct swap. Obviosly though, if hyrdashocker is right and the 8.25 was only 3.55, and the 9.25 only came with the trac lok as an option with 3.92s, then you will need to grab both the front and rear axles and swap them both to have the same ratio and get the LSD.
__________________
"If you ain't breakin' stuff, you ain't drivin' hard enough"



Last edited by 95_318SLT; 02-28-2010 at 10:32 PM..
Reply With Quote
  #9  
Old 02-28-2010, 10:54 PM
hydrashocker's Avatar
hydrashocker hydrashocker is offline
Hall Of Fame
Garage is empty, add now
 
Join Date: Jun 2005
Vehicle: 99' Ram 2500 V-10 Sport QC 4X4
Location: Grand Junction, CO
Posts: 13,947
Default

Man it's fun to rack your brain 95.....LOL


Why however do you think it never could come with a 9.25 from factory??????
__________________

Moto: I don't take sides, I hate everyone equally --- #1 V10 Club Member V10 Club

AKA....The Durango Section Godfather
Reply With Quote
  #10  
Old 02-28-2010, 10:56 PM
95_318SLT's Avatar
95_318SLT 95_318SLT is offline
Champion
1995 Dodge Dakota
My Garage
 
Join Date: May 2008
Vehicle: 1995 Dodge Dakota SLT 5.2L V8 4x4 5 Speed Club Cab
Location: Apex, NC
Posts: 4,842
Default

I don't understand the question. The OP said his differential was a 8.25" in post #5.
__________________
"If you ain't breakin' stuff, you ain't drivin' hard enough"


Reply With Quote
Old 02-28-2010, 10:56 PM
Reply
 
 
 




Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 06:43 PM.

Internet Brands, Inc.


Contact Details & Emails

Search Engine Friendly URLs by vBSEO 3.5.2