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Old September 16th, 2012, 07:10 PM   #1
CHEROKEEMUDMAN01
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Default jeep wrangler unlimited dana 44 vs dana 30 help

hey guys looking to buy a 4 door wrangler for the wife. we are prob going to order one so i have choices on what to get. i have never been a fan of the 30 in them cause i know there prone to bending under abuse. i have heard that the dana 44 is the same axle and tubes but with the 44 center section. is it really worth the upgrade? i know the rubicon gives u the 410 and lockers and 4.1 and i am leaning at going that way but for most part till its payed off at least it will be a dd for wife with a small lift and a little larger tires possible in future. lmk what u guys think and how much worse is gas millage in rubicon also please, thanks for any help in this discussion.
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Old September 16th, 2012, 10:23 PM   #2
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For what you say you'll use it for, I wouldn't spring for the Rubi.

Regarding the axle, the center is the only difference in the housing. They all bend in the same places. However, they are easy to beef up.

Regarding the lockers, they are known to have issues if used hard.

Regarding the sway bar, they are known to have issues.

Regarding the t-case, most people don't really want 4 to 1. Do you?

Rear axle is slightly different as well. 32 vs 30 spline shafts. Left and right side shafts are different on the Rubi vs interchangable on the normal 44.

I had a JK Rubi. When I bought a new JK, I bought a sport. The 30 is far from a beefy axle, but so is the 44. If you really want beef, you'll put something else is because you'll be as costly as a new axle to build a Rubi 44 up to similar standards. Then there is the arguement that for most, the 30 is strong enough.
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Oz's Jeep is downright anti-bling.
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Old September 16th, 2012, 10:51 PM   #3
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Quote:
Originally Posted by oz97tj View Post
For what you say you'll use it for, I wouldn't spring for the Rubi.

Regarding the axle, the center is the only difference in the housing. They all bend in the same places. However, they are easy to beef up.

Regarding the lockers, they are known to have issues if used hard.

Regarding the sway bar, they are known to have issues.

Regarding the t-case, most people don't really want 4 to 1. Do you?

Rear axle is slightly different as well. 32 vs 30 spline shafts. Left and right side shafts are different on the Rubi vs interchangable on the normal 44.

I had a JK Rubi. When I bought a new JK, I bought a sport. The 30 is far from a beefy axle, but so is the 44. If you really want beef, you'll put something else is because you'll be as costly as a new axle to build a Rubi 44 up to similar standards. Then there is the arguement that for most, the 30 is strong enough.
I lost count of all the contradictions in this post....

You will be very happy with the 4-door either way. I bought the sport, added 3" BDS lift and 35" tires and new rims for about $3K and have had a great time for 5 years with only $26K invested. How much are rubi's these days?
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Old September 16th, 2012, 11:03 PM   #4
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How are there contradictions? I thought it was pretty clear?
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Old September 19th, 2012, 07:54 AM   #5
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For a daily driver the Sport is great. The Rubicon is meant for offroading slowly on rocks or technical trails, so the transfer case is geared too low for the dunes or mud. So it kind of depends on what type of offroad wheeling you want to do once it is paid off. You can get a Rubi with the 3.73 axle gearing. I ended up putting a Rubicrawler in my JKU Rubicon so I could have the higher ratio for the dunes.

All versions of the automatic JKUs get about the same gas mileage, within 1 mpg, no matter what axle ratio. You are driving a brick, with lots of protrusions catching the wind and a nearly perpendicular windshield down, the road.

I've run the D30 front on a TJ with 35s on every type of trail. I've driven the new D44 on a JKU on every type of trail with 37s. I drive fast on the dune whoops but do not jump. I gusset the upper Cs and use finesse instead of the fast pedal to overcome an obstacle. Have not bent one yet. If I do, I'll move up to a better axle.

I suggest looking at the JKU Sport or Sahara.
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Old September 19th, 2012, 09:18 AM   #6
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I wouldnt trust either axle from what I have seen.My freind put a terra flex lift on his 09 rubicon unlimited along with some 35" mtzs. He bent the rear axle shaft the first time out,on a off camber climb.Ordered some from superior two months ago,still waiting.
In my opinion the 4-1 case is too low for anything but rocks.
After his first trip wheeling it stock he said he should have bought a reg jk and built his own axles with a atlas transfer case.

If I was buying a new jk,axles would be built before it left pavement.
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Old September 19th, 2012, 05:19 PM   #7
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sorry guys havent been home. thats kinda were i was the rubi is almost 39,000 i think, and i agree i dont need the 4:1 t case. i may just get the saraha and sleeve the 30 and do gussets and call it good till its paid off. wanted it to be able for the wife and her fiends the come out with it and hang with us when i take my jeep out but she wont be doing anything crazy with it. and if down the road i do decide to wheel it when its paid for i can do a 60 swap then there is so many bolt in kits for the jk i guess thats why they have become so popular. i appricate the ideas guys and were going to look tomorrow at them so ill let u know what we get or have to order since everydealer by us is out.
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Old September 19th, 2012, 07:03 PM   #8
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Get the green one.
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Old September 19th, 2012, 09:17 PM   #9
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I had a 08 Rubi Unlimited. The 4:1 T-case is to low in my opinion for a stock Jeep in Michigan. Try running Silver Lake in it.
The 3.6L and the A580 Automatic is a nice combo in the 2012+ Wranglers. Get one with 3.73 gears and you will be happy between fuel economy and vehicle performance.
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