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Mystery rear whine, I suspect the diff, but at a loss on diagnosing further

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Old 02-26-2019, 02:40 PM
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Originally Posted by xxyion
I know you've already ordered, but any chance it could be the diff mounts? Not sure if it would cause the same issue
Mounts look new; whole car looks new, actually.
Old 02-27-2019, 04:21 AM
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Sure its not tires? I had a crazy whine pop up at highway speeds that turned out to just be tires wearing in.
Old 02-27-2019, 06:07 AM
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Originally Posted by maranelloboy05
Sure its not tires? I had a crazy whine pop up at highway speeds that turned out to just be tires wearing in.
Pretty sure.

Originally Posted by vjarnot
I did also do the axle-nut 'tsb', and have tried a different set of rear tires - neither affected the noise.
Old 02-27-2019, 08:45 AM
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Originally Posted by vjarnot
Mounts look new; whole car looks new, actually.
Are the mounts stock? At 47k miles, I had some appreciable wheel hop whenever the car was in the wet. It was bloody awful. It did have older tires, which once replaced took care of 80% of it, but there was still the remaining 20%. I went to diff mounts next, and installed some blox collars on the bushings. This 100% took care of it, but did increase the diff sound to be more noticeable, especially with the clutch in coasting in gear or accelerating in first with light throttle, for example slowing to a stop light or taking off from one, and it increased the NVH slightly.

Any chance you can post a video of the noise?

Another benefit of the blox diff bushing collars is the rear of the car feels much more connected and in control, and I can feel the diff working properly.
Old 02-27-2019, 12:24 PM
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Originally Posted by vjarnot
Pretty sure.
Pretty sure or sure? I'd swap a set of tires before you go through the hassle of swapping the diff. I'd be very surprised if it was the diff at that mileage unless it was completely ragged on.
Old 02-27-2019, 12:52 PM
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Originally Posted by maranelloboy05
Pretty sure or sure? I'd swap a set of tires before you go through the hassle of swapping the diff. I'd be very surprised if it was the diff at that mileage unless it was completely ragged on.
I can't tell if you're writing but not reading, or just trolling.
Old 02-27-2019, 01:03 PM
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Sadly, reading comprehension is not what this forum is known for...
Old 02-27-2019, 02:26 PM
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Originally Posted by vjarnot
I can't tell if you're writing but not reading, or just trolling.
Fair enough, my bad I missed that.
Old 03-05-2019, 01:32 PM
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Well, this is a good start to the ebay diff adventure.

The beautiful packaging as it arrived to my door:


Given the state of the box, I'm actually shocked that the only obvious damage is one bent axle-flange ear:


FML. Not sure if I should bother with this thing or not...

Old 03-05-2019, 03:30 PM
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Originally Posted by vjarnot
Well, this is a good start to the ebay diff adventure.

The beautiful packaging as it arrived to my door:


Given the state of the box, I'm actually shocked that the only obvious damage is one bent axle-flange ear:


FML. Not sure if I should bother with this thing or not...
Oh forget it! That sucks! I would contact the seller asap and give them these pics, tell them you want them to send you a prepaid shipping label for a return. If they give you any push back tell them you will open a claim. Ebay should be on your side and refund you if they dont.


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