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Old 01-23-2011, 08:30 PM   #1
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Rubi locker into a non-Rubi?

So I was reviewing my build sheet and I noticed that my '07 Sahara came with the 4.10 Rear Axle ratio (same as the Rubi) and what appears to be an Anti-Spin Rear Axle Differential. Since the axle ratios are the same, am I able to take the same OEM locker used in the Rubi and hook it up to my Sahara?

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Old 01-24-2011, 06:01 AM   #2
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Your ratios are the same, but your axles are not. You have a D30 in the front not a D44. That could be an issue with the swap. Why not just get a set of lockers that fit what you have?

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Old 01-24-2011, 12:01 PM   #3
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Sorry, guess I should have clarified. I was looking specifically at the rear axle since the axle type and ratios are the same. I know I will need a seperate axle or locker in the front.
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Old 01-24-2011, 12:20 PM   #4
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This is an interesting question and I really don't know the answer. There are some issues though that give me a little pause . . . .

Would you perhaps have some computer problems? Perhaps needing a flash update or some such thing so your onboard computer knows there are lockers? The OEM lockers will only engage in 4L, so part of their design may require communication with the onboard computer.

Also, even if their were no computer problems and you were able to just do the OEM e-locker in the rear, wouldn't you then have the squirrely issue of an e-locker in the rear and a manual locker in the front? Or would you try to install another type of e-locker in the front, at which point you'd need two separate in cabin controls (one for each locker)?

Finally, can you put lockers on a limited slip diff? I would think they would work against the technology built into the diff itself and perhaps generate problems . . . .
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Old 01-24-2011, 12:27 PM   #5
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1) I can't imagine finding a OEM locker at a yard. They would never sell just the locker.

2) I believe buying the locker from Chrysler would cost way more than an aftermarket.
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Old 01-24-2011, 11:10 PM   #6
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My original thought was to buy the OEM 4.10 Rubi front axle, since it already comes with the OEM locker pre-installed, and swap out the Dana 30. Rather than swap out the whole rear axle, as long as the gearing is the same, I'm trying to determine whether I can install the locker without having to swap out the whole rear axle. I would also use the factory pumps/actuators and get the OEM panel with locker activation rocker switches (the one with the hazard flasher button in-cabin) to complete the job.

Keeping everything OEM Rubicon would avoid the problem MTH brought up of having 2 separate types of lockers (OEM & Aftermarket).
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Old 01-24-2011, 11:33 PM   #7
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No. A Rubi Dana 44 is different than the Sport (X) or Sahara Dana 44. The case is a little bit different, and the axle shafts are different # of splines. Also, the tubes are slightly different lengths. I did some research, as I had the same idea about a year ago.
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Old 01-24-2011, 11:54 PM   #8
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Guess that puts the OEM idea to bed then.

Looks like I'll be going with aftermarket lockers (ARB perhaps.)

The last question remains; can you put a locker in a limited slip diff?

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