rear axel

jb'sKJ · **Posted:** Mon Oct 29, 2007 1:43 pm

hi, i have a tab on my rear axel which has 4.1 on it. anyone know which axel i have, the dana or chrysler? i'd like to get a diff guard on.
my kj is a 2002/03 model, 2.4 with manual gearbox.
thanks
jonathan

bugnout · **Posted:** Mon Oct 29, 2007 2:12 pm

THE 4.1 means 4:10 gears, the diff is probably the Chrysler 8.25

tommudd · **Posted:** Mon Oct 29, 2007 2:16 pm

may not be an 8.25 as some of the ones (or maybe all) that were exported had Dana 35s I think esp back in those early model years, may want to double check, this is just from talking to some of the ones who built them

bugnout · **Posted:** Mon Oct 29, 2007 2:24 pm

This link will help with the identification

http://truckparts-specialists.com/catalog/differentials/axle-and-differential-picture-guide.htm

Jeepjeepster · **Posted:** Mon Oct 29, 2007 2:26 pm

4bangers got the dana 35 didnt they?

tommudd · **Posted:** Mon Oct 29, 2007 3:08 pm

not always theres a 4 cyl laying here in Toledo with 4.10s in the rear 8.25, front diff is gone though, :cry:

or at least thats what the tag said

jb'sKJ · **Posted:** Mon Oct 29, 2007 6:16 pm

thanks folks, especially for that link 'bugnout'; i'll get under her again in the light tomorrow (it's 11.15pm here) and see if i can spot the difference between the two pics and my axel...
yours
jonathan

jereosbou · **Joined:** Sun Sep 10, 2006 10:22 am **Posts:** 97

chrysler is square on bottom danas round easy to spot....

myjeepwalks · **Posted:** Mon Oct 29, 2007 10:43 pm

Jeepjeepster wrote:

4bangers got the dana 35 didnt they?

that's what i thought. :roll:

Albert · **Posted:** Mon Oct 29, 2007 10:51 pm

myjeepwalks wrote:

Jeepjeepster wrote:

4bangers got the dana 35 didnt they?

that's what i thought. :roll:

Yup, that's what I thought also. The D35 with 4:10 gears. I have never actually seen one and they could have changed it I suppose. The axle should have a tag on it too (drivers side) showing both axle model and gears.

jb'sKJ · **Posted:** Tue Oct 30, 2007 5:14 pm

i've had a look this evening and a dana 35 it is. thanks once again for that picture link 'bugnout'.

yours
jonathan

:twisted:

happy halloween all!

tommudd · **Posted:** Tue Oct 30, 2007 5:26 pm

I thought all 4 cyl had the 35s as well until I ran into this one in a junk, whoops recycling yard and they said they had one with 4.10s in the back, thought I had found my source for 4.10s!! front diff was gone, motor/ trans there, rear axle bent :cry:

Rush345 · **Posted:** Wed Oct 31, 2007 3:15 am

That was very interesting I will have to study it , but I have one little peice of confision as I have heard I think that the Dana 30 and the Dana 30A have the same cover . How does one tell the difference, I beleive from what I have read their is a big difference in the 2 I think. Also I think I've seen some one using one diff in the rear and a different one in the front. Why doesn't this cause a conflic??

carroll952 · **Posted:** Wed Oct 31, 2007 3:43 am

Rush345 wrote:

That was very interesting I will have to study it , but I have one little peice of confision as I have heard I think that the Dana 30 and the Dana 30A have the same cover . How does one tell the difference, I beleive from what I have read their is a big difference in the 2 I think. Also I think I've seen some one using one diff in the rear and a different one in the front. Why doesn't this cause a conflic??

There are multiple versions of the dana 30. The one our KJs and the KKs have is the Dana 30a. It has an aluminum housing and a longer pinion. All KJs and KKs come with this diff in the front. Some KJs have had a Dana 35 in the rear. These look very different from the 8.25 that most KJs and the KKs have. A Dana 35 is round whereas an 8.25 is has a flat bottom. Also it turns out some '02 South American KJs came with a Dana 44.

Rush345 · **Posted:** Wed Oct 31, 2007 5:43 am

carroll952 wrote:

Rush345 wrote:

That was very interesting I will have to study it , but I have one little peice of confision as I have heard I think that the Dana 30 and the Dana 30A have the same cover . How does one tell the difference, I beleive from what I have read their is a big difference in the 2 I think. Also I think I've seen some one using one diff in the rear and a different one in the front. Why doesn't this cause a conflic??

There are multiple versions of the dana 30. The one our KJs and the KKs have is the Dana 30a. It has an aluminum housing and a longer pinion. All KJs and KKs come with this diff in the front. Some KJs have had a Dana 35 in the rear. These look very different from the 8.25 that most KJs and the KKs have. A Dana 35 is round whereas an 8.25 is has a flat bottom. Also it turns out some '02 South American KJs came with a Dana 44.

Do they have the same gearing in the front and back???

tommudd · **Posted:** Wed Oct 31, 2007 8:38 am

They better have !!!!

tommudd · **Posted:** Wed Oct 31, 2007 8:38 am

They better have !!!!

jb'sKJ · **Posted:** Sat Dec 01, 2007 6:27 pm

hi again!
i got my diff guard and it doesn't fit!
so i guess i can't have a 35. the diff cover is round and looks like a 35 cover, but the diff casing (aluminium) is flat on the bottom. so do i have a chrysler diff? the only tab on the diff just has 4.1 on it.
i don't think i have a 30 as the cover does not look at all like it does on this link (from bugnout)
http://truckparts-specialists.com/catal ... -guide.htm
would anyone (who knows what axel they have) like to take a measurement for me, from the lowest (& center) bolt up to the next one and then again to the next, like in an arc starting from the lowest (& center) bolt. in metric if possible. then i would know if i have the same axel and which it is.
i guess if the kj was never fitted with a dana 30 then i must have the chrysler 8.25 or?
help much appreciated
jonathan

jb'sKJ · **Posted:** Sat Dec 01, 2007 6:44 pm

http://en.wikibooks.org/wiki/Jeep_Liber ... er_8.25%22

i went here and this is what it looks like under my kj. wish i'd thought of it before....
yours
jonathan

Christopher · **Posted:** Sat Dec 01, 2007 6:46 pm

Your talking about the back right? dana 30 is a front not rear. if its flat accross the botton its the 8.25 even though the cover is pretty round. A dana will had a d35 stamped on cast of the differential.

Chris

rear axel

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