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Some noise already?!

This is a discussion on Some noise already?! within the Drivetrain forums, part of the LSx Technical Help Section category; I recently got my rear end rebuilt and I waited the 500 mile break in period, about 600 actually. I ...

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    Team Skeet Captain JHayesLS1's Avatar
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    Angry Some noise already?!

    I recently got my rear end rebuilt and I waited the 500 mile break in period, about 600 actually. I didn't romp on it or anything I drove it nice. So lately today while driving to class I hear it making a little noise. Is that normal for a newly rebuilt rear end? I have a feeling I'm 100% screwed.

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    Senior Member 2001camaroSS's Avatar
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    i had mine rebuilt. before so it was quiet and didn't whine. they opened it up and the carrier was hanging on like a loose tooth. now after having it rebuilt the damn thing whines.
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    Team Skeet Captain JHayesLS1's Avatar
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    I hope its normal.. that makes me feel a little better.

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    Senior Member 2001camaroSS's Avatar
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    Quote Originally Posted by JHayesLS1 View Post
    I hope its normal.. that makes me feel a little better.
    its pretty normal. i've talked to a lot of car guys who say its near impossible to get them to not whine some.

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    Team Skeet Captain JHayesLS1's Avatar
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    Good. I've got a friend who just got a 2007 Mustang GT and he wants some.

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    Senior Member 98maro's Avatar
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    Mine wa rebuild 2000 miles ago. Since the first day. Is makin a noise. It's annoying on the freeway
    I thought it could be cuz I put 3.73s.
    What gears did u get?
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    Moderator 35th-ANV-SS's Avatar
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    Gear whine is usually the result of not properly being set-up or shimmed...

    Too much backlash or improper pinion depth normally....

    With that said though, some gear manufacturers are noisier than others.

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    Senior Member 2001camaroSS's Avatar
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    Quote Originally Posted by JHayesLS1 View Post
    Good. I've got a friend who just got a 2007 Mustang GT and he wants some.
    Go give em hell. Sounds like some fun.

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    Team Skeet Captain JHayesLS1's Avatar
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    Quote Originally Posted by 98maro View Post
    Mine wa rebuild 2000 miles ago. Since the first day. Is makin a noise. It's annoying on the freeway
    I thought it could be cuz I put 3.73s.
    What gears did u get?
    Factory gears for a M6. I wanted 4.11's but I couldn't since the work was done under warranty.

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    Senior Member 98maro's Avatar
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    Under warranty?
    Factory?
    If some day in a future u want to change the ratio. 4.10s are better.
    I went for 3.73s. Not a big difference from 3.42

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    Auto Painter RyanJM's Avatar
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    I have a A4 and replaced the factory 3.23's with a set of GM's the first time and they made a little noise and now o have motive 3.73's and they make a little noise. Richmond gears are the loudest usually. I replaced the gears in my 5.0 8.8 with factory Ford 3.55's and they make almost no noise. The GM 10 bolt rears seem to be more prone to a slight whine after you swap out the factory gears compared to a 8.8 mustang rear so I wouldn't worry about it.
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    Member bberretta's Avatar
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    Richmonds are loud but not unbearable. Sounds to me like it was setup wrong if it's that's noticable, especially on a stock gear. Take it back and have them recheck the backlash and set it up right, especially if it's still under warranty.
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    Senior Member INMY01TA's Avatar
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    A little gear whine won't hurt nothin.

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    I'm taking it back to the shop. It has become much louder than it was. I'm so sick of these repairs.

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    Moderator 35th-ANV-SS's Avatar
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    See my post #7....

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    Team Skeet Captain JHayesLS1's Avatar
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    Quote Originally Posted by 35th-ANV-SS View Post
    See my post #7....
    Taking advice from your post #7.

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    Team Skeet Captain JHayesLS1's Avatar
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    Shop said it was leaking, I'm taking it back thursday to have it on the lift and examined.

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    Member bberretta's Avatar
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    Quote Originally Posted by JHayesLS1 View Post
    Shop said it was leaking, I'm taking it back thursday to have it on the lift and examined.
    From where? If it was low then yes, it would get loud.

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    Team Skeet Captain JHayesLS1's Avatar
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    I guess the pumpkin casing? Hopefully that will be the fix. Student loans are about to buy me a 9".

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    Moderator Firebirdjones's Avatar
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    Sorry to hear it. It shouldn't make noise at all. Most shops have flat rate paid mechanics that won't or can't take the time to set up gears properly. Get it in and get it out type of thing.

    I rarely see anyone use a pinion depth gauge anymore, and most throw the new gears in with the old pinion shims and think it'll be okay. Doesn't work that way.

    I hope that's not what you ran into, and hopefully they are a stand up shop that'll make it right.

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