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Old 01-23-2007, 09:26 PM   #1
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Which pumpkin should i lock?

I have a 2000 tj with no lift and 31 inch procomp mt's. I dont want to go any taller than that but i want to be able to maximize my traction. I want to lock either my d30 or my d35 rear with a lunchbox locker. Which is safer on the road and on my axles? I have heard stories of a rear locking at highway speeds. But i have also heard that if I stick the locker in the front it doesnt handle great. What should i do??????

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Old 01-23-2007, 11:25 PM   #2
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You understand the two issues very well. Normally I would tell you to keep the locker in the rear in the event you need your 4wd for snow driving. Since that is not an issue for you I would lean toward the front.

If you did have to contend with snow then I would say the rear.

With a rear install you do have the "locker lane change" on occasion. However, with getting used to the locker and how to drive it, this is greatly reduced.

It's a tough call. There are benefits, and drawbacks, to both.

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Old 01-24-2007, 03:24 AM   #3
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lock up the front the lunch box locker will not tack the abuse in the rear Ive tryed it and it lasted two blocks they sent me a new one that lasted to the middle of a series of water falls
sent that back and put a spool out back

we had a friend put one of thoes lockers in the back of his jeep and he didnt even make to the trails we towed him back to the shop

but I wouldnt lock the dana35 just the dana 30 and upgrade the rear axle.
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Old 01-24-2007, 05:54 AM   #4
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If you lock a Dana 35 you will be replacing it. If your even thinking about putting a locker in a D35 go with a Super35 kit.
Or just lock the front
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Old 01-24-2007, 06:18 AM   #5
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Based on the rear dana 35, I would lock the front. You may hear clicking sounds, which is normal, and usaully in very tight turns you will hear some very loud clicking and the front may chatter a bit, but this is normal. Other than that you should not know its there on dry pavement or at highway speeds. If you do have to drive in the snow however, then yes it become a chore, as the locker and steering seem to fight each other for control of which way the jeep is going.
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Old 01-24-2007, 08:09 AM   #6
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Quote:
Originally Posted by Moab Man View Post

It's a tough call. There are benefits, and drawbacks, to both.
I agree completely. This is usually a can o' worms

I lean towards upgrading the rear axle and locking that. If you think about it, the times you'll need it the Jeep will be going uphill. The weight of the vehicle will be transferred to the rear at that point. That's where I want my traction.

Again, this is just one opinion. Do your homework and decide what will work best for you.
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Old 01-24-2007, 08:37 AM   #7
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Whats lunchbox locker? Why don't you just get a selectable locker.
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Old 01-24-2007, 08:42 AM   #8
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Lock the rear. Here is why I say that.....

You are running 31 inch tires and do not plan to go to larger tires. A Dana 35 is plenty strong enough for 31's, even when it's locked.

As for locking at highway speeds, my buddy has a loc-right and has never had that problem. I run a Powertrax No-Slip and love it. On the road I do not ever feel the locker and rarely hear it.

My advice is to lock the rear and worse case scenario, if you're not happy you can sell the lock for 3/4's what you paid and then go to the front.
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Old 01-24-2007, 08:55 AM   #9
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Lock the rear. Here is why I say that.....

You are running 31 inch tires and do not plan to go to larger tires. A Dana 35 is plenty strong enough for 31's, even when it's locked.

.
Nope.. 31's and a locked dana 35 will break, seen it happen.
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Old 01-24-2007, 09:20 AM   #10
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Lock the rear. Here is why I say that.....

You are running 31 inch tires and do not plan to go to larger tires. A Dana 35 is plenty strong enough for 31's, even when it's locked.
i read a post by jerry bransford saying hes seen a 4 banger on 31's break a dana 35 rear (i don't even think it was locked) and he had to tow it off the trail. whether it was locked or unlocked it broke. plus i saw a dana 35 for sale and the dude said he was on 31's unlocked on the street when it grenaded.

i say lock the front unless you wanna upgrade the rear at the same time you put the locker in.
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Old 01-24-2007, 10:57 AM   #11
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lock the front!

if you get an aussie locker get it from www.northridge4x4.com
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Old 01-24-2007, 12:12 PM   #12
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That you have a Dana 35c in the rear makes that decision very easy, lock the front axle. The Dana 35c isn't strong enough to lock, even if you stuck with 30" tires.

So far as locking the front goes, you will not notice its presence when you are in 2wd in the least, not at all. It only locks up hard when you're in 4x4 as it should. And not all lockers click when installed in the front, my Powertrax No-Slip locker installed in my front axle is virtually soundless in both 2wd and 4wd.
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Old 01-24-2007, 02:25 PM   #13
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Hmmmmm.......I guess my previous post (D35 is strong enough locked for 31's) was incorrect. I was under the belief that the norm was hard wheeling on 33's or running 35's in general doomed the D35. Learn something new every day.
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Old 01-24-2007, 03:18 PM   #14
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Hmmmmm.......I guess my previous post (D35 is strong enough locked for 31's) was incorrect. I was under the belief that the norm was hard wheeling on 33's or running 35's in general doomed the D35. Learn something new every day.
The D35 is doomed with any tires on it if it's locked up plain and simple. Jeep has took this under consideration with the JK and beefed up the D35.

Also my .02 on this one is to go ahead and just lock the front. I run Lockrite's front and rear in my D30/D44 and I've yet to have a problem with either of them. There's something like 16 - 23 degrees of rotation allowed by a lockrite before it starts to lock up and this only occurs when there is torque applied to the locker. This will never happen in the front unless you have 4wd engaged.
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Old 01-24-2007, 04:08 PM   #15
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i have a D35C on 33s and a heavy right foot. landed on both rear tires very hard multiple times with no bad after effects.

rear is logical and would be better, but with a locker, i would carry spare shafts. front is safer but wont be as good as a locked rear (it will still improve traction though)
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Old 01-24-2007, 04:32 PM   #16
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There's something like 16 - 23 degrees of rotation allowed by a lockrite before it starts to lock up and this only occurs when there is torque applied to the locker. This will never happen in the front unless you have 4wd engaged.
A Lockrite's normal operating mode, like a Detroit Locker, is to be locked even when the Jeep is sitting still in the driveway. An automatic locker unlocks when the outside tire rotates faster through a turn but it locks up again upon both tire RPMs are again the same. And in the rear, the locker is always receiving torque when you're driving so it's generally always pretty firmly locked up. A rear automatic locker is just a little more easily unlocked when it's not receiving as much torque like when you don't have your foot firmly planted into the gas pedal.
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Old 01-24-2007, 05:46 PM   #17
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I recently locked my front D30 with an Aussie lunch box locker. I have had no negative effects on the street. I can't even tell it's there. In 4wd, it does great too. Whenever I turn, I can feel the steering wheel trying to recenter itself a little harder than it used too, but that complaint is hardly worth mentioning. In snow it tends to under steer a little, but once you get used to it, it's not a problem
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Old 01-24-2007, 06:11 PM   #18
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lock up the front the lunch box locker will not tack the abuse in the rear Ive tryed it and it lasted two blocks they sent me a new one that lasted to the middle of a series of water falls
sent that back and put a spool out back

we had a friend put one of thoes lockers in the back of his jeep and he didnt even make to the trails we towed him back to the shop

but I wouldnt lock the dana35 just the dana 30 and upgrade the rear axle.
Not an attack on you but this really sounds like improper installation. What brand of locker were you using?

I have watched these lockers on Jeeps for years rockcrawling Moab and have not seen this kind of failure rate in total. Sure, plenty of snapped D35 axles but not the lockers.

Oops, back that up. I have seen that kind of failure rate of the locker when people were running 35"+ tires which is not the lockers fault.
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Old 01-24-2007, 08:30 PM   #19
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Thanks for all the advice. I starting to lean towards the front locker. Now my next question is what locker should i go with? Should i upgrade my axles in the front? Also and last question is, should i go this route or is there something else i can do to me heep in order to make more traction? Keep in mind i dont want to go any bigger than 31's. Thanks for all your input and your patience.
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Old 01-24-2007, 08:39 PM   #20
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Quote:
Originally Posted by Wr@ngler00 View Post
Thanks for all the advice. I starting to lean towards the front locker. Now my next question is what locker should i go with? Should i upgrade my axles in the front? Also and last question is, should i go this route or is there something else i can do to me heep in order to make more traction? Keep in mind i dont want to go any bigger than 31's. Thanks for all your input and your patience.
tires are going to be your biggest attribute to traction. you can lock front and rear axles, but if you are running racing slicks than none of that torque distribution is getting to the point that matters, the ground.

the tires that work best for you is going to matter on what kind of wheeling and driving you do. is this mostly a weekend warrior? DD that might see offroad once a month? beat on 3 days out of the week? mud, rocks, dirt?
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Old 01-24-2007, 09:42 PM   #21
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Quote:
Originally Posted by Wr@ngler00 View Post
Thanks for all the advice. I starting to lean towards the front locker. Now my next question is what locker should i go with? Should i upgrade my axles in the front? Also and last question is, should i go this route or is there something else i can do to me heep in order to make more traction? Keep in mind i dont want to go any bigger than 31's. Thanks for all your input and your patience.
Get an "Aussie Locker" from www.northridge4x4.com !!!!!!!

they have a good package deal with the aussie and a rockcrusher diff cover for $305: http://www.northridge4x4.com/proddet...KG-DANA30-ROCK

or you can just buy it byitself for $250 Shipped: http://www.northridge4x4.com/proddet...od=AL-XD-13027
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Old 01-24-2007, 10:31 PM   #22
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It might have been on this board that I saw someone's pictures of an Aussie and if that was any kind of representation of what that locker is I would pass. My suggestion is Lock-Right. Seems to be of better steel than any of the clones out there.

No need to upgrade your axles. The u-joint will be the weak point in the front and I believe you have a TJ (too lazy to go back and look) so you already have the D44 u-joints.
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Old 01-24-2007, 10:34 PM   #23
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It might have been on this board that I saw someone's pictures of an Aussie and if that was any kind of representation of what that locker is I would pass. My suggestion is Lock-Right. Seems to be of better steel than any of the clones out there.

No need to upgrade your axles. The u-joint will be the weak point in the front and I believe you have a TJ (too lazy to go back and look) so you already have the D44 u-joints.
that was the "lost" that had the aussie.
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Old 01-24-2007, 10:36 PM   #24
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yep,

here's what moab man was talking about.
http://i81.photobucket.com/albums/j2...ielocker-1.jpg
(circled in red)
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Old 01-24-2007, 11:29 PM   #25
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It'd be very hard to go wrong with a Lockrite or a Powertrax No-Slip up front.
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Old 01-24-2007, 11:52 PM   #26
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im a fan of the aussie, personally.

in my club there is a D30, D35, D44, and 2 toyota 8" aussies and none of them have failed...all owners say they will never buy anything else. seem to be quiter than other brands, too...

im going with the aussie / rockcrusher combo within the month
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Old 01-25-2007, 12:40 AM   #27
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It may be a good locker but that pict really concerned me. I personally have no experience with that brand.
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Old 01-25-2007, 03:47 PM   #28
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It may be a good locker but that pict really concerned me. I personally have no experience with that brand.
was the pic of a new locker, or one that had been installed for some time? all of the aussie lockers i have seen have had no manufacturing problems
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Old 01-25-2007, 05:07 PM   #29
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yep,

here's what moab man was talking about.
http://i81.photobucket.com/albums/j2...ielocker-1.jpg
(circled in red)
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was the pic of a new locker, or one that had been installed for some time? all of the aussie lockers i have seen have had no manufacturing problems
Brand new... click the link ^^
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Old 01-25-2007, 08:10 PM   #30
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Brand new... click the link ^^
thats odd. never seen any manufacturing defects like that in any aussie.

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