Selec Trac full time 4WD once standard on Sport Models

[Stan H]

In the Rubicon trim in 2021 it was not an available option and wasn't offered . Mine was built 6/20 ,Delivered and Putchased 12/20. I don't think it was ever an option for Rubicon at that time

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[Hootbro]

In the Rubicon trim in 2021 it was not an available option and wasn't offered . Mine was built 6/20 ,Delivered and Putchased 12/20. I don't think it was ever an option for Rubicon at that time

Rubicons got a version that was called "ROCK-TRAC". Basically the same as SELC-TRAC except it had a 4.0 ratio vs 2.71 ratio in SELC-TRAC.

 

[jac04]

... but my understanding as of some convos and research I've done this week is that Jeep's highly regarded BLD - brake lock differential - traction control system is probably superior to Selec-Trac, though it has a slight learning curve.

I would be interested to learn more about how you came to that conclusion.

 

[Stan H]

Rubicons got a version that was called "ROCK-TRAC". Basically the same as SELC-TRAC except it had a 4.0 ratio vs 2.71 ratio in SELC-TRAC.

Yes that is exactly what mine has is Rock Trac and on that low side it will just crawl. I can put it in first gear jump out run around the truck & get back in ...lol

 

[Stan H]

I would be interested to learn more about how you came to that conclusion.

I never heard of BLD brake lock difference.

 

[Gvsukids]

I never heard of BLD brake lock difference.

https://www.jeepgladiatorforum.com/forum/threads/brake-lock-differential-deserves-more-credit.61400/



https://www.google.com/url?sa=t&sou...QQFnoECBcQAQ&usg=AOvVaw36NnHS7vzgq2vVD1veLZJp

 

[Zachanadandy]

Yes and no locker in front unless and aftermarket has been installed. This is why I believe the Mojave to be inferior on rocks and certian terrain which forces a wheel free in the front. But it does have its strong suites and the 2.72.1 transfer case gives more speed for dunes and sand which is what it was designed for.
Mojave has stronger frame for bounding in a forward and aft position ,Rubicon more flex for rock climbing.
Its all really just about what kicks ya in the pants. I think the reason a rear locker is all it has is because a front e locker wouldnt help it in sand.

The Rubicon has less flex with the sway bar connected than the mojave (watched someone testing both on an rti ramp on YouTube), likely due to the softer sway bars. For $100 you can add a set of disconnects (or free with a wrench) and still have slightly better flex than the Rubicon thanks to the rear sway bar difference. Obviously the front locker gives the Rubicon and edge there, but you'd be surprised just how rarely you need to use the front locker. On the Rubicon trail we never used the front locker in the JLUR. On John Bull we used it once. The shocks and hydraulic bump stops are the main reasons I chose the mojave, but owning the JLUR on 39s is the other. Short of bobbing the bed and running 42s the gladiator could never be as good in the rocks anyway so I figured I'd lean into the advantages of the extra wheelbase. The mojave is surprisingly stable at freeway speeds in washboarded desert trails.

 

[bleda2002]

I'll mention that you should NOT use 4auto on loose off-road surfaces as the clutches can overheat. Jeep recommends shifting to 4hi instead so that the clutches lock up and stay connected.

We keep our 4xe in 4a always as its the only way to get full torque and HP output on it. If not you get power significantly neutered.

 

[Mike Kilo]

I would be interested to learn more about how you came to that conclusion.

Jason Samko has put out a few videos about it. Viz,

 

[Mike Kilo]

https://www.jeepgladiatorforum.com/forum/threads/brake-lock-differential-deserves-more-credit.61400/



https://www.google.com/url?sa=t&sou...QQFnoECBcQAQ&usg=AOvVaw36NnHS7vzgq2vVD1veLZJp

See also:

 

[bleda2002]

The bld on the jeep is probably the best I've seen, better than Toyota select trac for sure as I off-road with 2 of them, but it's still just a computer locking the brake on one side to try to send power to the other side. It is no replacement for an LSD or a locker as it's not really designed for long sustained low traction situations but more places where a quick bump helps get you going.

This has been pretty evident to me as the wife's JL is open diff and there is an obstacle that teeter totters the Jeep going from both fronts and rear passenger gripping to front driver rear passenger as it climbs. The bld will lurch it forward then let go once it thinks it's moving (about 2 feet) and it falls back down the obstacle again. If this was flat ground the bld would probably power it through in spurts but since this is a climb it just lurches forward then falls back and does it over and over again. Locked Rubicon never even revs the engine just crawls up it as if it wasn't even there.

 

[jac04]

Jason Samko has put out a few videos about it. Viz,

The video simply explains how the traction control & BLD works.

I am still very much interested in how you came to the conclusion that "Jeep's highly regarded BLD - brake lock differential - traction control system is probably superior to Selec-Trac, though it has a slight learning curve."

 

[LouisvEarlleJT]

I am still very much interested in how you came to the conclusion that "Jeep's highly regarded BLD - brake lock differential - traction control system is probably superior to Selec-Trac, though it has a slight learning curve."

I can't see them as comparable, not because one is better than the other, but simply because it's apples & oranges. BLD is traction control, selec-trac is a transfer case. If anything they're meant to work together not be pitted against one another.

If anything you could say that both are "ease of use" items since one fights wheel spin (which can be done manually, but again, ease of use) and the other locks in 4WD for you when needed (again, ease of use).

 

[Stuntman Mike]

As far as I know , in Europe it was standard for the Gladiator as well as for the Wrangler.

And I am very happy about this.

 

[loganjeeps]

I had selec-trac on an 88 XJ and loved it, even though in that era was a more rudimentary system it was still useful. wish I could have gotten it on my gladiator but couldn't find one with the other options i wanted that took priority.

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