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Diiferential ideas/questions
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=12763		 Page 1 of 1
Author:  Gris [ Sat Sep 23, 2006 10:36 pm ]
Post subject:  Diiferential ideas/questions
1. Will a Ford 8.8 rear end work in a liberty?

2. Wouldn't a front diff from something like a V6 dakota fit a liberty and end our Dana 30a pains?


If both of these questions are dumb, just tell me
Author:  tjkj2002 [ Sat Sep 23, 2006 10:44 pm ]
Post subject: 
The 8.8 can work,you will need to cut off the spring pads and shock mounts and weld them on the 8.8.The difficult part would be fabing up something to work with the upper tri-link balljoint that needs to be attached to the diff(it's bolted on our 8.25's).Not sure about the dakota front axle going in,it could also work but brackets would have to be fabbed upped also to hold it in and may need custom cv's also.May be more trouble than it's worth but not sure,really never looked at a dakota front end before.
Author:  Milner [ Sat Sep 23, 2006 11:21 pm ]
Post subject: 
I have not explored the front end options at all, I have no idea there.

But as for 8.8, it is possible, but not worth the trouble IMHO. Slightly bigger r/p but otherwise not a big improvement. The 8.25 is a good axle, MUCH better then the Jeep dana35! The are upgrade option for the 8.25 as well. Alloy axles, c-clip eliminator kits, etc....I have not been in a Libby 8.25, but I believe it should be the same as other 8.25's....I need to do a little digging in the parts books, but I bet we can up the axle splines too....
Author:  Rock Lizard [ Sun Sep 24, 2006 1:53 am ]
Post subject: 
Actually, the 31 spline 8.8 is a big improvement over the 29 spline 8.25, but it is not worth the trouble of setting it up for the KJ since the 29 spline 8.25 is quite capable of handling up to 35" tires.

Don't know anything about the IFS question.
Author:  Jeepjeepster [ Sun Sep 24, 2006 9:31 am ]
Post subject: 
No one has really experimented around with the front IFS, you can try if you want. Be sure to tell us how it goes. :)
Author:  Gris [ Mon Sep 25, 2006 9:35 am ]
Post subject: 
Looks like I get to be the guinee pig. It's not a guarentee that I will do it, was just asking, but I'll see if I can find a cheap used front end from a larger dodge type vehicle and see what happens.
Author:  Jeger [ Mon Sep 25, 2006 10:01 am ]
Post subject: 
Gris wrote:
Looks like I get to be the guinee pig. It's not a guarentee that I will do it, was just asking, but I'll see if I can find a cheap used front end from a larger dodge type vehicle and see what happens.


Gris, I have been thinking about this thing a little, while you are researching, consider taking a diff from a sfa rig and have the tubes shortened and made to run our shafts in one way or another. A donor front diff should be cheap, im not sure about how much to have the mods done though. Some others have mentioned this but if you are really going to have a go at it, it would be worth considering at least.
Author:  Milner [ Mon Sep 25, 2006 2:43 pm ]
Post subject: 
Jeger wrote:
Gris wrote:
Looks like I get to be the guinee pig. It's not a guarentee that I will do it, was just asking, but I'll see if I can find a cheap used front end from a larger dodge type vehicle and see what happens.


Gris, I have been thinking about this thing a little, while you are researching, consider taking a diff from a sfa rig and have the tubes shortened and made to run our shafts in one way or another. A donor front diff should be cheap, im not sure about how much to have the mods done though. Some others have mentioned this but if you are really going to have a go at it, it would be worth considering at least.


I know people that have done that with toy centers and with 9"Ford centers....but they end up pretty wide.
Older Corvettes had a IRS 44 center, hummers (the real ones) have AMC 20 independent centers. Also look at the F150 and Expeditions as they have an 8.8 IFS that is hi-pinion.
Just some ideas....
Author:  krazz1e [ Mon Sep 25, 2006 2:54 pm ]
Post subject: 
work on finding a workable front upgrade before thinking about going to a ford 8.8. The 8.25 is fairly stout especially for the ability needed for the KJ.

Unless you are building a true rockcrawler your waisting your time... the KJ is not the best platform to start from, IMO for that.
Author:  tjkj2002 [ Mon Sep 25, 2006 6:00 pm ]
Post subject: 
Just remember the Hummer's AMC 20's center section is also aluminum,it's the H1's geared hubs that take almost all the stress off the cv's and diff.Unimog portal axle's are the way to go :D .
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