Locker Question

Fulltimer · **Posted:** Wed May 21, 2008 7:41 am

Where is the best place to order the Detroit Locker and Tru-Trac locker. I looked at a few online sites and they all list Dana 30 but not the 30A. I'm sure if I asked they would probably have them. The part numbers would be nice also.

Thanks!

Terry

ATXKJ · **Posted:** Wed May 21, 2008 10:40 am

The 30 to 30A difference is the pinion length - the ring gear carrier is the same.

jsc7002 · **Posted:** Wed May 21, 2008 11:43 am

I just bought the DTT from 4wheel drive for $387 shipped they were the cheapest I found

jsc7002 · **Posted:** Wed May 21, 2008 11:55 am

http://www.4wheelparts.com/Drivetrain-D ... DET912A585

Fulltimer · **Posted:** Wed May 21, 2008 12:32 pm

So the Detroit Tru-Trac is a limited slip. That isn't what I want. Back to looking at ARB I guess.

Terry

jsc7002 · **Posted:** Wed May 21, 2008 1:24 pm

ARB and the DTT is all we can do in the front b/c we dont have lock out hubs, whats wrong with the DTT in the front?? thats what it was made for

Fulltimer · **Posted:** Wed May 21, 2008 3:36 pm

The web site says it's limited slip.

Terry

InCommando · **Posted:** Wed May 21, 2008 3:41 pm

It is technically a LSD, but it is really about 1/2 way between an LSD & a locker. It works in a completely different fashion than a LSD. In a bind, it sends power to the wheel with the most traction, not the least. It is entirely mechanical and does not wear out.

No, it is not a locker. If you need a locker, you need a locker. But it might be a better choice than you might think if you are considering it " just an LSD."

ROWA · **Posted:** Wed May 21, 2008 4:52 pm

Try, http://reiderracing.com/ I got my limited slip from them. Excellent customer service.

jason thompson · **Posted:** Wed May 21, 2008 6:12 pm

There is no reason you could not put any locker in the front of your KJ
as long as you dont have it in 4wd then it will not matter
They all work on input power not the wheels turning
The reason that people are "scared" to put a full locker in the front is due to the weak diff.
but when an ARB is on it is like having a spool or welded diff. even in 2wd if you turn on an ARB it locks the left and right shaft a Detroit locker will do nothing in 2wd but once in 4wd you can not turn it off to make a sharp turn

The True Track will be all you need for the front of a KJ , IMO
the times I need both my lockers ,ARB front and Detroit rear, in my TJ are few and far between and when I do need them any IFS KJ would be "hurting" even FJ's running 3" lifts and 34" swampers get "nervous" or "shaky" where I need both diff. locked

jason thompson · **Posted:** Wed May 21, 2008 6:17 pm

InCommando wrote:

It is technically a LSD, but it is really about 1/2 way between an LSD & a locker. It works in a completely different fashion than a LSD. In a bind, it sends power to the wheel with the most traction, not the least.

NOT true
it works just like any other LSD just more aggressive
also with a TT if you lift a wheel it will spin some times breaks can help but for the most part if all you have is a TT then all you have is an LSD ,a really good ,best you can buy LSD, but it will still become the victim to 1 wheel peel

tjkj2002 · **Posted:** Wed May 21, 2008 7:06 pm

jason thompson wrote:

InCommando wrote:

It is technically a LSD, but it is really about 1/2 way between an LSD & a locker. It works in a completely different fashion than a LSD. In a bind, it sends power to the wheel with the most traction, not the least.

NOT true
it works just like any other LSD just more aggressive
also with a TT if you lift a wheel it will spin some times breaks can help but for the most part if all you have is a TT then all you have is an LSD ,a really good ,best you can buy LSD, but it will still become the victim to 1 wheel peel

The TT has over twice the torque bias built into it then any other LSD,basically it takes more force for the TT to "unlock" then any other LSD.And if you apply the brake pedal a little it will fool the TT to stay "locked" even with one wheel in the air,I do it all the time with my TT in the front of my KJ and it works awesome.Plus with the brake applied a little it will also keep wheel spin to a very min if the TT does "unlock" so it's less likely break the front diff,I like to go nice a very slow on obsticals that I might raise a wheel anyway.

Fulltimer · **Posted:** Wed May 21, 2008 7:21 pm

Thanks guys I learned a lot in this short space. I would like the ARB, but the price of the others is very inviting. I plan on a CO2 setup so air wouldn't be a problem. What about the electrically activated ones? Are they LSD or lockers?

Terry

jason thompson · **Posted:** Wed May 21, 2008 8:31 pm

tjkj2002 wrote:

jason thompson wrote:

InCommando wrote:

It is technically a LSD, but it is really about 1/2 way between an LSD & a locker. It works in a completely different fashion than a LSD. In a bind, it sends power to the wheel with the most traction, not the least.

NOT true
it works just like any other LSD just more aggressive
also with a TT if you lift a wheel it will spin some times breaks can help but for the most part if all you have is a TT then all you have is an LSD ,a really good ,best you can buy LSD, but it will still become the victim to 1 wheel peel

The TT has over twice the torque bias built into it then any other LSD,basically it takes more force for the TT to "unlock" then any other LSD.And if you apply the brake pedal a little it will fool the TT to stay "locked" even with one wheel in the air,I do it all the time with my TT in the front of my KJ and it works awesome.Plus with the brake applied a little it will also keep wheel spin to a very min if the TT does "unlock" so it's less likely break the front diff,I like to go nice a very slow on obsticals that I might raise a wheel anyway.

Yes but read my post
"IF ALL YOU HAVE IS A TT" you have a rear locker so even when you lift a front wheel 1 of your rear wheels is getting a good bit of the weight making better traction on that wheel
also terrain has a lot to do with it down here it is lockers or 1 wheel peel even when you have weight on the wheel that will peel
I know of 2 guys with front and rear TT and both fall victim to 1 wheel peel even with breaks on
1 YJ and 1 ZJ ,The ZJ now has a Detroit in the rear and a TT front and has no issues ,still uses the break but not always needed just habit

also he said it works different and that it sends power to the wheel with more traction
if that were the case you would not need to apply breaks it would pull on the wheel that has traction or is on the ground

InCommando · **Posted:** Sat May 24, 2008 1:47 pm

Let me cut & paste from the TrueTrac owners manual:

"If one wheel loses traction, the pinions seperate slightly from the side gear, and wedge in the pockets. As torque increases, the seperating force increases, thus slowing or stopping the spinout. This allows torque to be distributed to the wheel with the best footing."

Sorry, I'll listen to a dozen websites & the manufacturer's description, and my own vision on seeing them work.

As stated: If you need a locker, you need a locker. They are not a locker.

But the TrueTrac is a dandy alternative for most people if you are smart enough to use it correctly. People who don't understand them see that they are not "rooster tailing" from both tires and think that they are not working when they are working as designed. You can trick them into spinning both wheels knowing that they will succumb to their bias at at some point. For some people who can't control their right foot, this action may be a diff-saver.

Joe Jeeper · **Posted:** Sat May 24, 2008 4:59 pm

I had a DTT in the rear of my Grand Cherokee it was awesome, I would recommend it and it's on my wish list for the LTD!

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