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Discussion Starter #1
Considering throwing a 9" under my Cherokee. Pro's/Cons to this axle? Heard they sap a lot of power. Also heard that with a detroit an axle breakage will likely break the detroit. Is an ARB better way to go? Spool? 31 spline spares easy to find?

Thanks for newbie help. Not a <IMG SRC="smilies/rainbow.gif" border="0">
 

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A 9 inch is definatly better than any ol D35c that is probably in there now!!! I have never heard of an axle break hurting a Detroit, hell, I can't even remember the last time that I have heard of a Detroit being damaged!!! The 9 inch is one of the best rearends (all around) out there.... Go for it!! <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce2.gif" border="0"> <IMG SRC="smilies/bounce.gif" border="0"> <IMG SRC="smilies/bounce2.gif" border="0">
 

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I have the stock 9" in my F150. I broke the stock carrier and put in a Detroit. Personally if I were to do it again I'd throw in a spool. The rearend has held up great and I try to mash pretty hard. Damn easy to take out carrier, only takes about 20min. 9" would be damn near bulletproof in a cherokee, and there are tons at the junkyard.
 

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Discussion Starter #4
Thanks for the words.

SeanP
 

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9 inch is an awesome rearend, endless after market support, and relatively simple to work on. I say go for it.
 

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I just put a 9" under my YJ out of a 76 Lincoln with disc brakes, 4.86 gears and a detroit, here is an article that sold me on the 9"

9" compare

Good Luck
BlueYJ <IMG SRC="smilies/glasses.gif" border="0">
 

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Originally posted by BlueYJ:
<STRONG>I just put a 9" under my YJ out of a 76 Lincoln with disc brakes</STRONG>
You mean one of these?


What did ya do to the bolt pattern? I'm still trying to decide what to install it in
<IMG SRC="smilies/biggrin.gif" border="0">
 

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Naaaaahhhhh, to weak for BIG tires. Axle shaft breakage will be continous with larger tires than 36...and a full 100% locker?? Forget it...get something stouter if you will run heavy trails, but might work if done mild off-road only. That is purely my opinion, since I have a habit to break everything ... <IMG SRC="smilies/smile.gif" border="0">
 

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Originally posted by jr4x4ee:
<STRONG>Naaaaahhhhh, to weak for BIG tires. Axle shaft breakage will be continous with larger tires than 36...and a full 100% locker?? Forget it...get something stouter if you will run heavy trails, but might work if done mild off-road only. That is purely my opinion, since I have a habit to break everything ... <IMG SRC="smilies/smile.gif" border="0"></STRONG>
What are you talking about?

What will break with tires over 36"s?

28 splined axles yah they might break.
31 spline Nah
35 spline like me and a spool never break.
40 spline <IMG SRC="smilies/eek.gif" border="0">
All very easy to swap in.

The housing Nope doubt it'll break.
The only time I've heard of the housing breaking is Highspeed go fast stuff in the desert. A 60 housing will break if you jump and hit something at 75 miles an hour.

Center section with it's double bearing supported pinion, I wanna see one of them walk away from the ring.

What do you run Rockwells?
 

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Originally posted by Drunken Monkey Boy:
<STRONG>What are you talking about?

What will break with tires over 36"s?

28 splined axles yah they might break.
31 spline Nah
35 spline like me and a spool never break.
40 spline <IMG SRC="smilies/eek.gif" border="0">
All very easy to swap in.

The housing Nope doubt it'll break.
The only time I've heard of the housing breaking is Highspeed go fast stuff in the desert. A 60 housing will break if you jump and hit something at 75 miles an hour.

Center section with it's double bearing supported pinion, I wanna see one of them walk away from the ring.

What do you run Rockwells?</STRONG>

28 and 31 spline axles will definately break, as well as 9" diff.carrier...seen this happen. Well, if you think it this way, 9" was never met to run such a large tires by the factory. My opinion is that, if you wanna run large tires, then get the axles built for them...as I said before...I do not wanna offend anyone, it is just the way I am thinking of. I have seen too many axles to snap and it just can get boring at one moment <IMG SRC="smilies/smile.gif" border="0">

And yes, I am planning to run military truck axles, but not rockwells. Since they are not accecible from Estonia. I have the axles already from Gaz 66, its Russian army truck. Axles have hydro steering, lockers and airing system by the factory <IMG SRC="smilies/smile.gif" border="0"> Oh and 42" high wheels...

[ 10-20-2001: Message edited by: jr4x4ee ]

[ 10-20-2001: Message edited by: jr4x4ee ]
 

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Anything can break given enough torque to it. For my application 36's is the largest I am going. I know of 2 other guys running 9" one is even HP and spooled, he is running 38's does the con all the time. Never broken a thing. The other guy is set up almost identical to me 31 spline 4.86 and locked, oh ya and disc brakes. I dont mash the go peddle at the first site of rocks and will take on all challenges within reason. To each his own though. This subject has been debated to death. I am very happy with my set up. My .02 worth.

BlueYJ <IMG SRC="smilies/glasses.gif" border="0">
 

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The 9" is a pretty strong axle up to a certain tire size. I have 36's with a 460 for power and mine has held up so far. I have cracked the center section around the pinion support bearing. Another disadvantage of the 9" is how far below the centerline the pinion is. I amswitching to 38's and putting a D70 in.
 

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Hey u2slow,

I had dutchman make me a set of 31 spline axles with 5 on 5.5 bolt pattern. I had the rotors redrilled. I am running 4.86's and a locker. My pinion is set at 15 degrees pointing up. I think this is an awsome set up. I had to take the o-ring out of my parportioning valve to get more brake fluid to the rear. It stops my Jeep on a dime. Go For it. FAWK everybody who says the only way to go is D60's <IMG SRC="smilies/flipoff.gif" border="0"> My .02

BlueYJ <IMG SRC="smilies/glasses.gif" border="0">
 

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Originally posted by jr4x4ee:
<STRONG>Naaaaahhhhh, to weak for BIG tires. Axle shaft breakage will be continous with larger tires than 36...and a full 100% locker?? Forget it...get something stouter if you will run heavy trails, but might work if done mild off-road only. That is purely my opinion, since I have a habit to break everything ... <IMG SRC="smilies/smile.gif" border="0"></STRONG>
<IMG SRC="smilies/eek.gif" border="0"> <IMG SRC="smilies/eek.gif" border="0"> I'd better go get a 60 then. My 38.5 SX's and 31 spline axles with a spool might explode in the parking lot. Please..... I have been all over the Con put amny a street miles on my rig with absolutely no problems. I think the 9" under a XJ would be great.
 

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Dito Rockslut, you tell them boy <IMG SRC="smilies/flipoff.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0">

my wife likes my 9" also.

BlueYJ <IMG SRC="smilies/glasses.gif" border="0">
 

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Originally posted by BlueYJ:
<STRONG>Dito Rockslut, you tell them boy <IMG SRC="smilies/flipoff.gif" border="0"> <IMG SRC="smilies/beer.gif" border="0">

my wife likes my 9" also.

BlueYJ <IMG SRC="smilies/glasses.gif" border="0"></STRONG>

She likes my 9" too! <IMG SRC="smilies/thefinger.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0"> J/K
<IMG SRC="smilies/eek.gif" border="0">

[ 10-25-2001: Message edited by: The Rockslut ]
 

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Discussion Starter #17
thanks, got the 9" on monday. It has the currie built trussed housing, 31 spline, 4/56s and detroit. For less than the price of just gears and ARB (without the labor), I have a stout rear end that is set up perfectly for XJ. Even has 5 on 4.5 and spring perches correctly positioned. I tore it all down within an hour of having it and all parts a perfect, R&P look brand new.

I will keep my 4.0 and probably never go larger than 36SSR (had to hack majorly to fit 35s). Keep an eye out on Barret, 'Con, and Fordyce for Green 97 XJ with MARNIXJ plate. Will be getting it regularly.

PS-My wifes eyes got very big the first time she saw my 9" <IMG SRC="smilies/redface.gif" border="0">
Then she asked me "How much?"
 

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xj w/ stock engine and t-case 9" rear

I have a friend who has a 9" with 4.56 gears and a spool. So far he has broken 3 axles in 3 months. he is running a Q78 swamper TSL

He is changing over to a dana 60 this winter
 

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If you do get a 9" make very sure to pay close attention to the welds the hold the tubes into the housing. There have been two guy in our club (one with a '78 Bronco, one using an EB 9" in his CJ), and both of them had the housings start to come apart. In the case of the Bronco it cracked on the trail and finally gave up trying to limp it back home. The guy with the CJ inspects welds for the naval shipyard, and he said the weld quality was crap. On the other hand there are a couple of guys in the club running 9" with 35-36" tires and they haven't had any problems yet. So the point is inspect the housing well.
 

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It seems only a few people are considering application here. For a YJ, TJ, or XJ I think the 9" would be ideal. Then maybe get the Warn lock-out kit for the front which you can order w/optional 5 on 5.5" bolt pattern (altho IIRC this kit is spendy).
Now, under a full-size w/V8 power and 38s.... I think you're pushing it. Sure, then you can upgrade to 35 or 40 spline shafts but that's also very spendy. 'Nuf said.
 
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