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Old 01-14-2014, 05:33 PM   #1
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Trac Loc verses Locker '99TJ

Howdy TJers! I was looking into the pros and cons of adding as rear locker to my TJ. I was going to go with one of the Aussie Lockers, until I discovered last nite that I have a Dana35 Trac Lok limited slip rear end.

A pal explained to me that the trac lok is a good system, compared to just having an open differential , but not quite the same as having a locker.

He also stated that to have a locker , I would need to replace the Trac Lok carrier and stuff in my dana 35, and convert it to a dana 35c, and then install the locker.

I am just looking for some words of wisdom, advice, ya's or na's before I decide what to do.

I am getting ready to add a lift and some new tires, and was going to do a locker at the same time.. having the Trac Loc... will I really need a locker?

thanks everyone, ya all are the best

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Old 03-07-2014, 01:39 PM   #2
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A limited slip is never as good as a locker off road but it is better than an open diff. If you want to add an Aussie locker I would recommend installing it up front because automatic lockers in the rear give your jeep terrible road manners

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Old 03-07-2014, 03:16 PM   #3
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Guys will say don't bother locking a D35 without replacing axle shafts...
That said.
Limited slip works good on road, for snow or rain or whatnot but pretty much useless off road.
Automatic lockers are a bit tricky on road, they are noisy and can cause some bucking until you get used to them. They are better used up front. Guys say Detroit Lockers are the best and have very little downsides compared to other brands.
If it were my money? I'd do the axle shafts front and rear and put in air lockers so I can have on board air, and a train horn
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Old 03-07-2014, 03:18 PM   #4
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You would be surprised what you can do though. Lift it first, go off road, and see if you really need a locker. I've gone places with open diffs guys had to lock up for with different setups. I owe it to my tires, I say. Tire choice could be just as important as whether you lock or not.
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Old 03-07-2014, 03:23 PM   #5
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I have an Aussie up front and I've yet to hear it click once, in 2wd I can't even tell it exists. But as soon as I hit the trail I wouldn't trade it for the world
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Old 03-07-2014, 03:24 PM   #6
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Up front they are fine, they don't get any torque in 2wd so they are always unlocked.
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Old 03-07-2014, 03:49 PM   #7
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exactly
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Old 03-07-2014, 10:42 PM   #8
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Quote:
Originally Posted by -Ish- View Post
Howdy TJers! I was looking into the pros and cons of adding as rear locker to my TJ. I was going to go with one of the Aussie Lockers, until I discovered last nite that I have a Dana35 Trac Lok limited slip rear end.

A pal explained to me that the trac lok is a good system, compared to just having an open differential , but not quite the same as having a locker.

He also stated that to have a locker , I would need to replace the Trac Lok carrier and stuff in my dana 35, and convert it to a dana 35c, and then install the locker.

I am just looking for some words of wisdom, advice, ya's or na's before I decide what to do.

I am getting ready to add a lift and some new tires, and was going to do a locker at the same time.. having the Trac Loc... will I really need a locker?

thanks everyone, ya all are the best
I would just keep it the way it is. Trac Lok is fine for Dana 35 unless you have lots of money to spend to strengthen it up to hold locker. Even at that point its not going to be like dana 44. So just keep it the way it is or just swap out to dana 44. In my opinion you will just waste your money to upgrade dana 35 to hold real lockers like ARB or Elockers.
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Old 03-08-2014, 07:59 AM   #9
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I agree with most of the posts here. I have a 2000 that was open in both ends. I put a Trac Loc in the rear and Aussie up front. I wanted a Detroit Tru Trac in the rear that is a true gear locker but has manners like a limited slip. Unfortunately, I have 3.07 gears and they don't make a Tru Trac for that ratio in a D35. I had an early Bronco with a Detroit Locker in the rear. It was a beast off pavement but very obnoxious on pavement. Wouldn't recommend it on a daily driver. If your Trac Loc has some miles on it, you can reduce the amount it slips by replacing the oil and not adding posi additive. That's what i do.
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Old 03-08-2014, 08:23 AM   #10
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I'm with the others. Leave the rear alone and lock the front. Aussie, Detroit, Spartan are good, inexpensive ($300), units. They're not too hard to put in. Just takes time. Post up for a shop day for some help. You'll save money and learn about your Jeep. With a front locker and new tires, you'll feel like you have a whole new vehicle
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Old 03-08-2014, 09:14 AM   #11
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I have an Aussie up front and I've yet to hear it click once, in 2wd I can't even tell it exists. But as soon as I hit the trail I wouldn't trade it for the world

But can you still turn while its in 4x4? I have a ford f250 and when you lock the front its very hard to turn even in dirt.
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Old 03-08-2014, 10:26 AM   #12
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Aussie, Detroit, Spartan should click while turning on the street and some times off road. That's the mechanism releasing to allow for the difference in inside vs outside wheel speed. It should never be hard to tirn
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Old 03-08-2014, 10:36 AM   #13
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But can you still turn while its in 4x4? I have a ford f250 and when you lock the front its very hard to turn even in dirt.
Yes and no, that depends on the trail surface and how hard the front axle is loaded.

When there isn't much load on the front axle, an automatic locker like an Aussie will unlock & let you turn fairly easily. If there is a heavy load on it, the locker won't be able to unlock easily and it's going to be difficult to turn if you're on a high traction surface.

In most situations a front automatic locker is fine for letting you turn when you're in 4x4. But there are some where turning will be difficult if not seemingly impossible in some unusual/very difficult trail conditions. My previous TJ has a No-Slip locker (similar to the Aussie) up front and it was great 90% of the time but once in a while, it could make it a booger to turn on a difficult trail. Fortunately I had manual hubs so occasionally I would hop out & unlock my hubs so I could stay in 4Lo without the front locker being engaged.
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Old 03-08-2014, 11:24 AM   #14
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But can you still turn while its in 4x4? I have a ford f250 and when you lock the front its very hard to turn even in dirt.
Depends on what you're driving on, I live in the Midwest so most trails are wet or loose dirt so turning isn't a problem only issue I've ever had was turning around at the top of a rock wall but since there was so much grip just put it in 2wd and turned around like normal

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