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Old 11-20-2015, 09:32 PM
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JL Rear Axle

Looking at the spy photos, it's obvious that the test mule was not using a standard Dana 44, or any other type of standard Dana rear axle. So I did some looking around and found a photo of the 9.25 inch axle used in the Ram ecodiesel. They look to be a match to my untrained eye. It would make sense from a production standpoint to minimize the number of axle types across platforms.

Has anyone else looked at this?

This powertrain might convince me to jump to the new Jeep from my JK.

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Old 11-26-2015, 09:52 AM   #2
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I am thinking they wont stick that back end in a 4cyl 2dr.

Weight, parastic and cost would all push against that.

Maybe we will see a few tiers down the whole drivetrain this time around.

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Old 11-30-2015, 10:32 AM   #3
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Quote:
Originally Posted by ivantate View Post
I am thinking they wont stick that back end in a 4cyl 2dr.

...

Maybe we will see a few tiers down the whole drivetrain this time around.
We already see that divide between the Sport/Sahara and the Rubicon now, so it's not unreasonable to think that it is going to be the case next generation too, and a beefier axle combo for the diesel that has already been proven in other platforms would make sense.
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Old 12-23-2015, 06:37 AM   #4
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The beefier axle has been noted by almost every publication the printed the images of the test mule. In the good ol' days diffs were easy to differentiate by their shape and bolt pattern. I'm not sure if that is still the case.

As noted by GGA the diesel would likely have a stronger diffs. I don't know what percentage of JL's they expect to sell with this oil burner but if the number is low it would make sense to include the same axle in every Ruby to boost production numbers and lower costs.

If Jeep is going to release the JL in 18-20 months we should start getting more spy fotos and leaks in about 3-6 mos as prototypes are built.
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Old 12-29-2015, 09:30 AM   #5
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A former Wrangler suspension engineer has stated that it's a D44. In 07/08 they upgraded the D44. For '18 it's being upgraded again. But it's still a D44.
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Old 01-12-2016, 07:02 AM   #6
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Quote:
Originally Posted by TheGreatGrapeApe View Post

We already see that divide between the Sport/Sahara and the Rubicon now, so it's not unreasonable to think that it is going to be the case next generation too, and a beefier axle combo for the diesel that has already been proven in other platforms would make sense.
The diesel JKs have the same axles as the gas ones. Why would they do it any different with the next Generation?
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Old 01-12-2016, 12:13 PM   #7
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The diesel JKs have the same axles as the gas ones. Why would they do it any different with the next Generation?
You mean other than the large difference in power #s and application?

They currently have the same axles, but it's not just a singular option on the petrol side either, which is the point. Not that the diesel would get a third option, but that when it was a better diesel, they would likely put the better axle option in BOTH the Rubicon and the Diesel, plus likely still offer the lower model option packs. The current diesel doesn't really significantly change things for the platform, but if they do go the Ecodiesel 3.0 V6 route instead of a 2.XL I4 variant then they will have a great reason to make sure it is beefier for it possible extra duties, especially in JT/truck form.
But your argument as to why mess, would also apply to 'why would they make a next generation if they are selling this generation just fine...'.

It's not that they need to do something different, but the fact that they already have an Axle split between Sport/Sahara and Rubicon, and even have the mix/match in between, why would someone think there would only be ONE option next generation? And if they are going to change it on the Rubicon, then it makes sense to add it to something like the diesel platform to not only ensure a proper combination of parts, but also to spread the adoption of the new product to achieve efficiencies and economies of scale.

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