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Building a Bumper?Ruffstuff Axle Simple Swap Kit!~Artec JK 1 TON SWAP~

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Unread 01-31-2014, 04:30 PM   #1
ufatbastehd
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Regearing Limited slip questions

I've been saving up and am close to re-gearing my 5 speed 6 cyl from 3.73 to

4.56 gears. I running 33x12.5 duratracs

I wanted to install truetracs front and rear. but for my use rear only could be fine. I want to have this done once and done right

My jeep is basically a street Jeep that's used in the snow/ice with some beach and logging trail use

Questions are;
a/Are trutracs front and rear overkill for my use?
b/As I understand I do not need to buy new carriers if I go the trutrac route correct?
c/I have a D30 front and and 44 rear If I don't go trutrac I understand I only need to but a new rear carrier. Is this correct.
d/ Should I have the inner axle seals replaced too?

I found a shop that will re-gear for 300 for the rear and 375 for the front.
if I supply the parts. I know it's best to have the shop supply but this shop comes highly recommend.


Thanks

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Unread 01-31-2014, 04:42 PM   #2
dakman
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You will have to buy new carriers, they are the truetracs. Yes you should have the inner seals replced. True tracks front and rear would work great in snow, ice, beach, and trails.

Mark
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Unread 01-31-2014, 04:49 PM   #3
Wheelin98TJ
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A. I don't think front and rear TrueTracs would be overkill.
B. Correct, no new carriers needed if you buy TrueTrac limited slip diffs.
C. Instead of a new rear carrier, another option is to use thick cut gears. You could keep your existing carrier and use that with thick cut 4.56 gears.
D. Yes
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Unread 03-25-2014, 04:47 PM   #4
ufatbastehd
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I just got off the phone with a shop that advised me that I would be over geared if I go to 4.56. He said he has done this for others and the were very unhappy.
He also said not to believe what you read in the forums. Funny everybody in the forums have said 4.56 is perfect for my rig. Everything I've read indicates 4.56 is the way to go.

This came from an off road shop in my area. I've called about 7 shops for estimates and that's the first time I've heard this.
His price was high too!
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Unread 03-25-2014, 04:52 PM   #5
biffgnar
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Quote:
Originally Posted by ufatbastehd View Post
His price was high too!
Tell him you want the option of a free regear if you follow his advice and are not satisfied.
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Unread 03-25-2014, 05:00 PM   #6
ufatbastehd
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Originally Posted by biffgnar View Post
Tell him you want the option of a free regear if you follow his advice and are not satisfied.
Good one.
I'm not going to deal with this shop in any way
Actually he told me if he does it and I'm not happy with it there is no going back
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Unread 03-30-2014, 08:57 AM   #7
joe_jeep
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4.56's, and 33's, with a 5 speed, is the perfect setup. 4.10 is a little weak, 4.88 is a little deep. if he says thats wrong, he is the wrong guy to do the regear!
look for spicer gears, and timken bearings for the regear. dont buy your own parts, let them supply them! if they wont warranty the work leave!
it will be a new jeep after u re-gear. you will love it!
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Unread 03-30-2014, 09:06 AM   #8
McLovin
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Personally I'd go 4.88's, it would give you the option of running 35's later, and in the meantime there is an approximate 170 rpm difference, in 5th gear at 65.
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Unread 03-30-2014, 09:10 AM   #9
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Quote:
Originally Posted by biffgnar View Post
Tell him you want the option of a free regear if you follow his advice and are not satisfied.
OP, if you spend more time in the forum you'll find a variety of preferences about gearing. Shops differ in how stringently they have to account for their time, so many of them can't offer a re-do if your preferences turn out to differ from the norm.

In the past, I've found the front Truetrac makes a single banging noise when it engages. I read somewhere that it's attributable to the differing lengths of the front axle shafts. That banging noise is actually a good thing, because tapping the brake pedal helps to engage the Truetrac, and the banging noise let's you know that it's engaged. I guess that noise from the front is a reason to install Truetrac in the rear, as well (you'll know they're both engaged).

Yesterday, I was wheeling in 4-HI and did not hear the banging noise from the front Truetrac. I wonder if the noise only occurs in the low range?
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Unread 03-30-2014, 01:55 PM   #10
BorderTJ
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Quote:
Originally Posted by Pine_Cat
OP, if you spend more time in the forum you'll find a variety of preferences about gearing. Shops differ in how stringently they have to account for their time, so many of them can't offer a re-do if your preferences turn out to differ from the norm. In the past, I've found the front Truetrac makes a single banging noise when it engages. I read somewhere that it's attributable to the differing lengths of the front axle shafts. That banging noise is actually a good thing, because tapping the brake pedal helps to engage the Truetrac, and the banging noise let's you know that it's engaged. I guess that noise from the front is a reason to install Truetrac in the rear, as well (you'll know they're both engaged). Yesterday, I was wheeling in 4-HI and did not hear the banging noise from the front Truetrac. I wonder if the noise only occurs in the low range?
I could be wrong but I don't think the TrueTrac makes any noise.
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Unread 03-30-2014, 05:01 PM   #11
FarmerinVA
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Originally Posted by BorderTJ View Post

I could be wrong but I don't think the TrueTrac makes any noise.
It's certainly noiseless in the back. And due to the design, it isn't the TrueTrac that's banging in the front, either, although it may be something that goes along with knowing the front axle is fully engaged. I'm curious to see what this is about.
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My do-it-yourself install thread for a TrueTrac in the rear, upgraded shafts, and a PowerTrax No-Slip in the front:

http://www.jeepforum.com/forum/f9/ex...hafts-1234745/
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Unread 03-30-2014, 05:22 PM   #12
gregstudeny
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I just got front and rear TT installed. I haven't noticed any noises.
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Unread 03-30-2014, 06:42 PM   #13
IslandTJ
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I have the TrueTracs in the front and rear and they are silent
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Unread 04-03-2014, 06:28 AM   #14
Pine_Cat
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Back when I was trying to decide on a front traction device, I found an article by a University of Northwestern Ohio instructor who indicated that front Truetracs make a single banging noise when they engage because the front axle shafts are of different lengths. Now I can't find that article using different search terms, which is always frustrating, especially since it had been so easy to find a couple years ago.

Apparently, the Truetrac gears are not always engaged, but they can be encouraged to engage with a single tap on the brake pedal. This matched up with my experience when I first had the Truetrac installed. In slippery conditions, I would have to tap the brake pedal, and then I would hear the single bang from up front, and then feel the extra pull from the front axle. Initially, I was dismayed by the single bang upon engagement, but eventually I realized that it was helpful because it let me know when I applied enough brake to engage the Truetrac. It's only a single bang because then the Truetrac gears are engaged.

This experience was mostly on 29" tires. I wonder if there's something about larger tires that causes the Truetrac to be engaged all the time, so you don't hear the bang? Eaton did indicate a sensitivity to tire size. Back in the day, they did not recommend Truetrac for larger than 33" tires. However, a few years ago they revised that to 38" notwithstanding the unit's sensitivity to tire size.
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Unread 04-03-2014, 06:47 AM   #15
robncar
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OP, not only replace the seals but buy "master install" kits for both axles.
You may have been planning on this but I didn't see you list it.
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