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09-30-2018, 02:17 PM | #1 |
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HELP - Modulating Whirring Sound From Diff or Rear End Area???
I have a modulating whirring sound coming from the differential rear end area at about 20mph, regardless of gear. Could this sound be from a wheel bearing, or the differential nose bearing, or perhaps a driveshaft bearing? Sound clip link below.
The recording was made with the rear seats down. Listen for the modulating wah-wah type sound. The car makes the noise when coasting in neutral, or at steady state speed of 20mph. I do have 12mm spacers, so I am wondering if perhaps the whirring sound is a driveshaft bearing? Who knows? Opinions please. The sound clip can be heard best on mobile phone speakers or with computer speakers, but not with ear buds which seem to boost the bass too much. Take a listen. https://soundcloud.com/user-90547482/diff-whirring
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Last edited by DrFerry; 11-20-2021 at 07:13 PM.. |
10-05-2018, 11:39 AM | #3 | |
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The outcome was a worn wheel bearing .
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12-18-2018, 10:19 AM | #4 | |
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12-20-2018, 02:11 PM | #5 | |
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this was obviously an installation error of the person who installed the gearset/quaife. this is no normal wear and these side bearings are rock solid and do fail very very very rarely. and these ones look really horrible... furthermore, if there is no manufacturer name on them it could be there has been used poor quality noname stuff when installing the quaife?! i hope the fix has been done by another shop now and they used OE bearings and have (and know how to use) the tools to set dynamic friction values right. if they did not set it right you will have the same problem again, soon! |
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12-20-2018, 06:51 PM | #6 |
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Glad you figured out what it was . Good job !
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01-18-2019, 02:56 PM | #7 | |
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wtf
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10-28-2022, 01:30 PM | #8 | |
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Sure hope these bearings last longer than the old ones. Perhaps the pre-load was too tight? Comments would be appreciated. .
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10-28-2022, 01:31 PM | #9 |
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IF I had to do it all again I would've bought a Diff from driftflo.
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'08 E92 M3 DCT Melbourne Red/Bamboo Beige Leather/EDC/SSP Spec-R DCT clutch discs/SSP Pro-Gold DCT Fluid/Quaife LSD/3:45 Final Drive by Diffs Online/BE Bearings & ARP Bolts/Vibra Technics Engine Mounts/M3 World HFC X-Pipe/LUX H8 180/BPM Sport DCT Tune/PFC Z-Rated Pads/ECS Brass Brake Caliper Bushings/Alex Shop Solid Sub-frame Bushings/Motul 600/Tint
Last edited by DrFerry; 12-20-2023 at 04:16 PM.. |
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