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Old August 23rd, 2008, 11:10 AM   #1
BowtieWrangler
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Default JK Dana 44 vs Older Dana 44 axles

The axle im concerned with is the front high pinion dana 44s.

Vehicle info 1991 Jeep Wrangler YJ. It has a Chevy 350 and this winter will be getting a TH350 tranny. Im undecided at the moment wether to keep the Np231 or go with a dana 300 tcase. The axle i have for the rearend is a 98 Explorer 8.8 with a detroit locker and 5.13 gear. I am running 35x12.5s and will be steppin it up to 37 or 38s.

The JK Front Dana 44 (part #P5153825) i can purchase brand new for around $1000 with my brothers mopar discount. It comes complete with brakes/rotors/calipers, electronic locker and 4.10 gears. Superior axle now offers a 5.13 gear option for it. I like the idea of the electronic locker, and not having to get out and lock the hubs. However, this where i need help. Are the older dana 44s going to be stronger becuase they have locking hubs or will the new 44 be sufficiently strong with out it. Im trying to compare cost effectiveness along with the amount of work. Obviously, the new dana 44 is going to take the least amount of work but id rather do more work if it means having a better axle.

(Please dont confuse the JK Dana 44 with the TJ rubicon Dana 44 when mention weak points in the axle)
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Old August 23rd, 2008, 11:22 AM   #2
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FWIW, our shop JK has a Rubi 44 in the front with 5.13's and stock axle shafts. So far, it's survived a 425 HP 6.1 Hemi without grenading. the bolt pattern is 5on5, but you can get adapters for it. The only down side I can see is that it will be @4-5 inches wider* than your 8.8 and if you add adapters to get 5on4.5 it's gonna be pretty wide in the front.


*(roughly? I can't remember the exact WMS)
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Old August 23rd, 2008, 11:23 AM   #3
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(Please dont confuse the JK Dana 44 with the TJ rubicon Dana 44 when mention weak points in the axle)
But it is much the same as they both use the 30 axle tubes and knuckles.

It does have the strongest 44 pinion ever made.

It *should* be ok if you truss it.

Also have read some bad about the electric locker also.
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Old August 23rd, 2008, 11:23 AM   #4
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Also, there are locking hub conversions available for the JK axle, but their spendy.
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Old August 23rd, 2008, 11:45 AM   #5
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My 8.8 measures 59.75" thats from tire mounting surface to tire mounting surface. The specs i found on the JK Dana 44 is 61.9 inches. So, my plan was to get wheel adapters from performance wheel for the 8.8 . 1 inch thick and to adapt from the 5x4.5 to 5x5 bolt pattern. This would make my 8.8 61.75" and have a match bolt pattern.



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Also, there are locking hub conversions available for the JK axle, but their spendy.
Ya, ive seen this kit. This is what made me second guess the JK dana 44 because to be honest ive never owned a 4x4 with locking hubs. So, i dont know if theres any strength differences between an axle with or without.
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Old August 23rd, 2008, 12:46 PM   #6
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The locking hubs don't really have anything to do with the axle strength, per se. I would say your downsides will be different bolt patterns, different widths, and having to hack off a lot of bracketry. I personally would run a pair of waggy axles and be done with it. The 8.8 likes to bend axleshafts, and adding 1" extra hanging off the end isn't going to help issues.

Keep in mind that for the JK or a HP D44, you would need to flip the D300.
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Old August 23rd, 2008, 01:51 PM   #7
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Im undecided at the moment wether to keep the Np231...

There are better choices for driver-drop cases. And I don't mean going as big as 205's.
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Old August 23rd, 2008, 03:10 PM   #8
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There are better choices for driver-drop cases. And I don't mean going as big as 205's.
is this an atlas or stak your refering to? or is there a vehicle equipped tcase ur talking about?
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Old August 23rd, 2008, 07:24 PM   #9
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JP mag compared the JK 44s to the TJ 44s and the tubes were WAY beefier on the JK axles. IIRC, they were larger diameter and like 2x the thickness of the TJ tubes.

the OLD Rubi D44s were weak, but the NEW Rubi D44s share only the knuckles with the 30. Everything else is a major step up.
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Old August 23rd, 2008, 10:13 PM   #10
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is this an atlas or stak your refering to? or is there a vehicle equipped tcase ur talking about?
241J, 241OR, 208J, etc...
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Old August 24th, 2008, 12:01 AM   #11
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The knuckles and balljoints are the weakest parts of the TJ D30, IMHO
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Old August 24th, 2008, 03:24 PM   #12
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JP mag compared the JK 44s to the TJ 44s and the tubes were WAY beefier on the JK axles. IIRC, they were larger diameter and like 2x the thickness of the TJ tubes.

the OLD Rubi D44s were weak, but the NEW Rubi D44s share only the knuckles with the 30. Everything else is a major step up.
Isn't it the TJ Rubicon that shares the dana 30's knuckles and not the JK?
Ive been searching out alot of info on the web about the JK Dana 44 and found nothing mentioning the JK Dana 44 sharing anything at all with the TJ Dana 30. Ive found info saying the TJ Rubi dana 44 shares dana 30 parts.
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Old August 24th, 2008, 05:57 PM   #13
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It shares the same knuckles with the JK 30 not the tj 30. Buy stock in ball joints and most likely uni-bearings also with 37-38's
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Old September 4th, 2008, 02:01 AM   #14
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Quote:
Originally Posted by 2kids=nojeepmoney View Post
JP mag compared the JK 44s to the TJ 44s and the tubes were WAY beefier on the JK axles. IIRC, they were larger diameter and like 2x the thickness of the TJ tubes.

the OLD Rubi D44s were weak, but the NEW Rubi D44s share only the knuckles with the 30. Everything else is a major step up.

x2 but the down side to teh JK is the front shafts and DS will always spin

and if your tired of getting out and looking your hubs the leave them locked in thats all the JK 44 will do
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Old September 4th, 2008, 10:45 AM   #15
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but the down side to teh JK is the front shafts and DS will always spin
You mean just like a TJ, ZJ, and a lot of XJ's?
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Old September 4th, 2008, 12:12 PM   #16
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You mean just like a TJ, ZJ, and a lot of XJ's?

He is talking about VS. a regular D44 with manual hubs.....
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Old September 4th, 2008, 12:27 PM   #17
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He is talking about VS. a regular D44 with manual hubs.....
O RLY?
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Old September 4th, 2008, 10:01 PM   #18
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O RLY?



ya and ZJ's like I own
and want to swap in a D44 but want Hubs to lock in but almost went the JK 44 rout myself
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Old October 5th, 2010, 09:21 PM   #19
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Quote:
Originally Posted by BowtieWrangler View Post
The axle im concerned with is the front high pinion dana 44s.

Vehicle info 1991 Jeep Wrangler YJ. It has a Chevy 350 and this winter will be getting a TH350 tranny. Im undecided at the moment wether to keep the Np231 or go with a dana 300 tcase. The axle i have for the rearend is a 98 Explorer 8.8 with a detroit locker and 5.13 gear. I am running 35x12.5s and will be steppin it up to 37 or 38s.

The JK Front Dana 44 (part #P5153825) i can purchase brand new for around $1000 with my brothers mopar discount. It comes complete with brakes/rotors/calipers, electronic locker and 4.10 gears. Superior axle now offers a 5.13 gear option for it. I like the idea of the electronic locker, and not having to get out and lock the hubs. However, this where i need help. Are the older dana 44s going to be stronger becuase they have locking hubs or will the new 44 be sufficiently strong with out it. Im trying to compare cost effectiveness along with the amount of work. Obviously, the new dana 44 is going to take the least amount of work but id rather do more work if it means having a better axle.

(Please dont confuse the JK Dana 44 with the TJ rubicon Dana 44 when mention weak points in the axle)
Can you get me one for that price I want one Bad with a 4.56 gear.....email me at stksndtj@yahoo.com
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Old October 5th, 2010, 11:12 PM   #20
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IMHO, aint no chain drive aluminum cased transfer case better than a dana 300.The ratios are very close all gear drive and iron case plus you can go 4:1 if your feeling saucy.
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