Nothing against the TT or anything but...it's noisy! Maybe I'm just hyper-sensitive but it's driving me nuts! At low speeds there is this sound, I can't really describe it. Gearhead said it sounds like "like a metal wheel rolling over a metal track, only much softer", guess that's pretty accurate. Exception13 also noticed it. It doesn't seem to bother them. If you have the radio and A/C turned down it is really noticeable. I haven't had any of the dash rattles or any other noises that bothered me, until now.
I'm not saying don't get one, just wanted to let people know. I guess there is always a trade-off. I know it won't break, it just sounds like it will!

 

Interesting... but I guess I'm not reall surprised by it either... BTW.. anything can be broken with the right motivation! LOL

 

Sounds like gear whine! I had it too, because the first shop I went too didn't use a preasure gauge when they put it in, and it caused uneven wear on my gears. So I took it to excessive and they fixed it, however because of the breakin, my gears still whine, no where as bad as before, but enough that I am going to change them out this month. It sucks, but I have to do it. Driving me nuts, gear whine and muffler drone combined are just too darn annoying.

Now, on mustangforums, before I got my motives, someone told me they whine (vs. Ford Racing Gears, which are softer), but John told me it depends on the quaility of the shop.

I spoke with Excessive (Chris) about this, and he said they have to be installed right, and the type of oil does help.

 

It's only at low speeds. I don't think it's gear whine. Makes no noise at speed.

 

Hmmm, I think Excepcion13 mentioned the same thing but wasn't enough for him to care. Not 100% sure though. I would PM him.

You want to hear bad, call me on my cell when I'm at 70mph plus, you will hear gear and muffle drone. Just ask Excepcion, he heard it on my cell phone. Luckily I worked a side job to cover the gear replacement.

 

I pm'd him before I started this thread. If you look at my original post I said that Gearhead and Exception13 are both getting the noise but it doesn't bother them. Sorry to hear about your gear whine. Hope you get it sorted out.

 

Opps, my bad. My whine is fine, Chris is gonna fix it for me.

 

Sorry to hear that you guys are getting this whine noise. I only added the ford T-loc, and kept my stock gears. Mine is quiet as a mouse. Just a question, for those getting the whine, did you also chance out your gears as well?.

 

huh That's interesting to know. I'll be going with the Ford gears & tlok.

 

Are you only hearing noise going straight ahead? If so the TT has nothing to do with the noise, unless they used bad bearings to install it. If you get noise at slow speed only, you need to fiqure out if it "whines" on the coast side or the drive side. What this means is that when you coast the gears are loaded on one side of the tooth, when you accelerate they are loaded on the other side. You need to know when it whines, this will help determine where the problem is in the setup. The rear end was more than likely not set up properly. At this point in the game the gears have more than likely already wore in to the bad setup. What this means is that they will always whine.With gear sets you usually only get ONE shot at setting them up correctly. You still need to get the rear end setup correctly, if you don't the gears will not only whine but they will wear out also . Good luck One other thing, all gear sets exhibit whine to some degree or another, SLIGHT gear noise may not be an indication of a problem. Only the trained ear knows the difference....

 

I'm hearing it mostly, or only, on the passenger's side. I hear it mostly turning corners slowly and sometimes straight ahead. It's not a whine so much, more like someone stepping on a bag of marbles. That's about the best way to describe it. I bought a $100 Richmond install kit, wouldn't that have included the bearings?

 

Does it sound like chattering? kind of a rapid binding feeling in the car that causes the car to studder while in turns? If so we used to fix that by making a series of fiqure eight turns. this will usually break the rear end in, the TT that is, it has no effect on the gearset. You may have to do 20 or so figure eights to iron it out.

 

Not chattering, not binding. I'll look for an empty parking lot and try the figure eights. Thanks for all your help, you seem to really know your stuff!

 

After Jimp's original Personal Message to me, I thought I should "cross the Ts and dot the Is" just to be absolutely sure of my TrueTrac Shuffle answer to Jimp. I sent this message this morning to Customer Service at Detroit TrueTrac:

Subject: Mustang, 2006, 7.5" Ring
To: cs@Detroitlocker.com

I have a Detroit TrueTrac installed in my 2006 Mustang with the 7.5� ring gear. It is the greatest thing since sliced bread, but I do have three questions:

1.) As I slow to a stop, I hear what sounds like a light chunking, like a metal wheel rolling over a metal track, only much softer. Is this from the parts that shuttle from side-to-side? I have started to call this the TrueTrac Shuffle.
2.) Providing that the TrueTrac Shuffle is a normal sound, would the use of the Ford stock lubricant (75W-140 without any friction modifier) be better than the Mobile 1 75W-140 LS fluid (which has a friction modifier)?
3.) Although I do have the provided oval TrueTrac label under my hood, I would like an exterior label to mount on my back window, which would match my Magnaflow label. They are white letter decals designed to go on the outside of the glass, and the main lettering is ¾� tall with accent lettering being 1&1/8� tall. Do you happen to make a label like this and if so, could I get one?

The feedback from the Mustang Source Forum has been wonderful regarding the TrueTrac. It is a very popular item in the new Mustang V6 world, since none of these come equipped with even a limited slip. Here are some of the TrueTrac threads, if you are curious:

http://forums.bradbarnett.net/index.php?showtopic=38458 (my thread)
http://forums.bradbarnett.net/index.php?showtopic=42610 (another user's thread)
http://forums.bradbarnett.net/index.php?showtopic=42048 (oil question thread)

Thanks much, Brian

 

Cool. I anxiously await the reply. Do you get the noise when you turn also? I could swear it's getting worse but I'm not 100% sure I'm not just obsessing over it. I called the shop that installed it and they said the noise is normal. I may take the car there next week so they can listen to it in person.

 

I think it is a function of slowing down under a slight compression braking load or even in neutral, and I don't think the steering angle is a causal factor for me. It seems to start at speeds as high as 25 MPH and continues until stopped. The noise isn’t bothersome to me, and definitely has been there since the start. I have about 3,000 miles on my TrueTrac now, and we did do an oil change at 1,300 miles. The TrueTrac had no shavings, plus no gear whine, and no problems. The noise would not be on what you would call a “normal� car, and I don’t like to think of my Mustang as a “normal� car. I actually find the noise pleasant, and it is reminiscent of a sound you might hear on an old steam engine passenger train. I hear the TrueTrac Shuffle, and I know that noise is what it does as part of its design. In addition, that is a design that works in a superior method over any other. It free wheels through the corners, thereby giving you the best traction to resist fishtailing, while still locking up on wet pavement when you need to accelerate. With the Detroit TrueTrac, the Eibach Springs & anti-sway bars, and the wider rubber, I feel I have the best handling car in the world, dry, wet, or ice & snow.
Go ahead, do the Shuffle, make my day.

 

Since this diff uses a parallel pinion technology, basically a floating planetary gearset for each axle,to be on the safe side, I'd take it back for a physical inspection. Given the design of this diff, the eights may produce very limited results, if any. If there is a problem with the diff, doing fiqure eights may worsen the condition. Sorry, for the bad info.....for some reason I was thinking clutches ..not the case here.

 

Good job on the update Jimp! If there is one thing all members can expect from your upgrades, is an honest opinion and follow-up..

If there is a solution to the problem, I am quite sure Jimp is going to try his best to track it down, and share the solution...

@Scrming

LOL!! The right motivation is the key here.. You crack me up!

I remember Jimp was really focused on the initial oil install.. I am very curious if this problem stems from an oil issue... Is it not correct that most of the tru-trac guys have used the same oil? Does this practice need to be altered? Isnt it worth a try for the next tru-trac victim, to possibly recommend a different oil, along with an additive base friction modifier? Some needs to change.. If not the True-Trac, atleast the oil?

 

I suppose that's possible. I think that the bottom line is this: it's supposed to sound this way. My installer even said this. It bugs me, but only if I have the radio and fans off.

 

You could always just get a set of MAC mufflers. I think I can 100% guarantee that'll stop the axle noise from bothering you (also works on conversations, the radio and even the occasional fire truck)