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Unread 08-17-2014, 09:01 PM   #1
MountainManJr
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Dana 30 and 35 differentials?

I was reading online about my 2006 wrangler, I have the d30 and 35, they say it has a limited dif in the rear and no lockers in the front, just want to confirm this, and how hard is it to put a locker in my d30? Thanks

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Unread 08-18-2014, 06:39 AM   #2
Jeepsr4me
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Pretty easy to install up front. Couple ways to do it. One is like the video below and other is with the carrier left in the diff.

https://www.youtube.com/watch?v=fEWYMuWOJws
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Unread 08-18-2014, 06:40 AM   #3
robncar
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For the D30, a "lunchbox" locker is a good choice. Look into Aussie, lock-right, spartan, etc.
The lunchbox locker only replaces the spider gears instead of a full case locker that replaces the entire carrier.
You can self install a lunchbox locker, a full case locker requires a gear setup.
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Unread 08-18-2014, 08:33 AM   #4
Airstreamer67
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I installed an Aussie in my front D30 and I can't tell it's there in 2WD. It's quite and "invisible" while driving on the road. Just right.


But when I'm in the woods and I put it into 4WD, the front axle suddenly multiplies my traction by a large factor and gets me through mud that I'd otherwise have to use the winch to get past.


I love it.
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Unread 08-18-2014, 09:33 AM   #5
joe_jeep
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Cheal lunchbox up front is great. Look at lokka. They are cheap.
I would worry more about the dana 35 in back. They are weak.
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Unread 08-18-2014, 10:12 AM   #6
brokenyoujoint
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Dont go to crazy with the front locker. Meaning dont buy an ARB or detroit as the locker will be much stronger than your front end and will win. Also the ARB is in the 800-1000 price range and IMOP the 30 (although a decent front end) isn't worth the upgrade. Been there done that. Stick to the ^^ suggestions and do the lunch box. Also when you say "how hard is it to put a locker in my d30?" it's just has easy/hard as any other differential. And with your comment I assume (excuse me if I'm wrong) that you have no install experience. Installing lockers and gears isn't something you want to do with out some experience and tribal knowledge/tooling etc. Pay someone with experience... Also it's a good time to get gears put in if you have or are planning larger tires. And I assume with a locker you plan on going bigger.
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Unread 08-18-2014, 12:10 PM   #7
boykinjw
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Agree with airstreamer, I have an Aussie in my from dana 30 and don't know it's there on the road. When in 4wd on the trail it's flawless and I haven't had any binding issues on tight turns.

One point is to check gear ratio, Aussies will not work with the 3.07 carrier, you need at least 3.73
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Unread 08-18-2014, 11:25 PM   #8
jeepster4
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JoeJeep- are you saying the d35 is weaker than the d30? In what way?
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Unread 08-19-2014, 02:06 AM   #9
BloodThirsty
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Quote:
Originally Posted by jeepster4 View Post
JoeJeep- are you saying the d35 is weaker than the d30? In what way?
The rear handles more of the power especially in 4wd. The 30 can be locked on larger tires where as it's not suggested to lock the 35 unless you have a super kit installed. I've been locked in my 30 for several years now and it's held up fine. I would have never locked my 35 on my 35" tires. Which is why I just did an 8.8 swap.
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Unread 08-19-2014, 02:34 AM   #10
26679cj5
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Quote:
Originally Posted by boykinjw View Post
Agree with airstreamer, I have an Aussie in my from dana 30 and don't know it's there on the road. When in 4wd on the trail it's flawless and I haven't had any binding issues on tight turns.

One point is to check gear ratio, Aussies will not work with the 3.07 carrier, you need at least 3.73
Why would it not work? I used one in a 3.07 carrier for a couple years. All you're doing is replacing spider gears. Its actually easier to install one in a 3.07 carrier.
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Unread 08-19-2014, 06:20 AM   #11
joe_jeep
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Quote:
Originally Posted by jeepster4 View Post
JoeJeep- are you saying the d35 is weaker than the d30? In what way?
The rear sees more stress. It will break sooner than the front.
The d35 is notoriously weak.
It can b upgraded to handle moderate wheeling.
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Unread 08-19-2014, 08:18 AM   #12
robncar
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Quote:
Originally Posted by jeepster4 View Post
JoeJeep- are you saying the d35 is weaker than the d30? In what way?
The D35 uses internal c-clips to retain the axles, not external retainer plates. When the axle shaft in a D35 breaks, it comes out of the axle tube and you have a really bad day with ratchet straps, logs, etc. If a D30 axle breaks, you can shove a rag in the tube, remove the inner axle (NOT THE OUTER!!!) and limp it home.
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Unread 08-19-2014, 12:50 PM   #13
Airstreamer67
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Yeah, my D30 has factory 3.07 gears in it and the Aussie works just right. The poster might be thinking of Detroit limited-slip (I believe) that will not fit the 3.07 gears.
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Unread 08-20-2014, 01:23 AM   #14
jeepster4
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Does the d35 high pinion have the same problem as the d35?
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Unread 08-20-2014, 04:11 AM   #15
crazyracer77
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So I'm thinking about doing the lunchbox on my 03 sport. Where would you recommend ordering it from? Also what gear oil do you guys like running?
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