clunking noise after installing solid diff bushings

divadp17 · 12-31-2020, 11:50 AM

I installed the Turner solid aluminum diff and subframe bushings and after my second session at the track i started hearing loud clunking noises during low speed and during gear engagements. Not sure if this is normal when running solid bushings. Would it be due to broke diff bolts? I checked to see if my diff was sagging on one side but it seems aligned. I also have aftermarket exhaust hangers and they are softer than the oem hangers so im assuming under intense heat they soften up causing the exhaust pipes to hit the diff when moving. lmk your guys experience thanks.

Video of the clunking noise.

Ajolives · 12-31-2020, 01:20 PM

Sounds like your driveshaft is slapping around under there, honestly sounds like a worn guibo to me. I would crawl under there are gets some eyes on the diff bolts real quick to be sure they're not broken.

Just speculating, maybe someone else can chime in with more experience, good luck!

Ajolives · 12-31-2020, 01:27 PM

Quote:

Originally Posted by Ajolives

Sounds like your driveshaft is slapping around under there, honestly sounds like a worn guibo to me. I would crawl under there are gets some eyes on the diff bolts real quick to be sure they're not broken.

Just speculating, maybe someone else can chime in with more experience, good luck!

On second thought, probably not the guibo. Don't mind me, haha.

tsk94 · 12-31-2020, 01:29 PM

I've had Turner solid SF and diff bushings in my car for 2 years now, never had clunking like this before. I don't think this is related to the bushings themselves causing the clunk. Perhaps now with the solid bushings the clunk is more noticeable but I doubt they are the cause.

Vybz · 12-31-2020, 02:22 PM

That sound is definitely not normal with solid differential bushings. I'd definitely get back under the car to verify things or have your mechanic check it out.

divadp17 · 12-31-2020, 04:27 PM

I'm looking at the bushings and there seems to be a slight gap between the subframe and diff bushings which is not sitting flush. I'm going to torque it down to spec and see if this helps.

ThunderMoose · 12-31-2020, 04:40 PM

Quote:

Originally Posted by davitopark

I'm looking at the bushings and there seems to be a slight gap between the subframe and diff bushings which is not sitting flush. I'm going to torque it down to spec and see if this helps.

Looks like one is installed different than the other. Lips are in different position. These are different pictures?

divadp17 · 12-31-2020, 04:44 PM

Quote:

Originally Posted by ThunderMoose

Quote:

Originally Posted by davitopark

I'm looking at the bushings and there seems to be a slight gap between the subframe and diff bushings which is not sitting flush. I'm going to torque it down to spec and see if this helps.

Looks like one is installed different than the other. Lips are in different position. These are different pictures?

Yeah that's the other thing I noticed the shop installed one of them wrong smh...

tsk94 · 12-31-2020, 04:46 PM

Quote:

Originally Posted by davitopark

I'm looking at the bushings and there seems to be a slight gap between the subframe and diff bushings which is not sitting flush. I'm going to torque it down to spec and see if this helps.

For reference, mine don't have that gap:

Not sure if that's related to your issue or not. But that 1/8" the diff is moved out, is it causing it to contact anywhere? But even so, the bushings are pressed in and shouldn't move, even if they are out of place slightly to begin with. Since the clunk is intermittent, it seems like something is moving/contacting some of the time. Not sure..

fsmtnbiker · 12-31-2020, 05:26 PM

Yeah the bushings being installed incorrectly is probably the cause of the noise. If a shop did this, it is 100% on them to fix it. Those bushings come with clear instructions, there’s no excuse.

tsk94 · 12-31-2020, 05:32 PM

Oh ya, one is backwards lol

Bartledoo · 01-01-2021, 04:11 PM

Quote:

Originally Posted by tsk94

Oh ya, one is backwards lol

roastbeef · 01-03-2021, 05:06 PM

makes me wonder if that backwards bushings is creating some misalignment in the driveshaft. its could also be the very common center cv, or its not tightened up a bit. seems to be audible when you lift, which is typical.

might as well get a one piece carbon shaft.

justint5387 · 01-04-2021, 02:00 PM

Oh man, that shop failed...

Hopefully the installed the subframe bushings correct.

divadp17 · 01-05-2021, 12:44 AM

Quote:

Originally Posted by justint5387

Oh man, that shop failed...

Hopefully the installed the subframe bushings correct.

Yea thats the next thing i was worried about so I told him to double check that as well. smfh...

divadp17 · 01-05-2021, 12:55 AM

Quote:

Originally Posted by roastbeef

makes me wonder if that backwards bushings is creating some misalignment in the driveshaft. its could also be the very common center cv, or its not tightened up a bit. seems to be audible when you lift, which is typical.

might as well get a one piece carbon shaft.

Thanks for the input I'll have the shop check the center cv

SAMM3Y · 01-05-2021, 01:11 AM

Quote:

Originally Posted by davitopark

Quote:

Originally Posted by justint5387

Oh man, that shop failed...

Hopefully the installed the subframe bushings correct.

Yea thats the next thing i was worried about so I told him to double check that as well. smfh...

I believe all solid subframe bushings go in from the bottom.

12-31-2020, 11:50 AM	#1
divadp17 Private First Class 194 Rep 163 Posts Drives: e90 m3 6mt Join Date: Aug 2018 Location: Bay Area, CA iTrader: (2)	clunking noise after installing solid diff bushings I installed the Turner solid aluminum diff and subframe bushings and after my second session at the track i started hearing loud clunking noises during low speed and during gear engagements. Not sure if this is normal when running solid bushings. Would it be due to broke diff bolts? I checked to see if my diff was sagging on one side but it seems aligned. I also have aftermarket exhaust hangers and they are softer than the oem hangers so im assuming under intense heat they soften up causing the exhaust pipes to hit the diff when moving. lmk your guys experience thanks. Video of the clunking noise. Attached Images __________________ 08 E90 M3 6MT IG: divadp17
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12-31-2020, 01:20 PM	#2
Ajolives Captain 922 Rep 933 Posts Drives: E90 M3 Join Date: Mar 2019 Location: Tampa iTrader: (0) Garage List 2019 Audi SQ5 [0.00] 2008 BMW M3 [0.00]	Sounds like your driveshaft is slapping around under there, honestly sounds like a worn guibo to me. I would crawl under there are gets some eyes on the diff bolts real quick to be sure they're not broken. Just speculating, maybe someone else can chime in with more experience, good luck!
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12-31-2020, 01:29 PM	#4
tsk94 Lieutenant Colonel 1522 Rep 1,591 Posts Drives: E92 M3, E82 128i, F82 M4, E36 Join Date: May 2017 Location: Calgary iTrader: (2)	I've had Turner solid SF and diff bushings in my car for 2 years now, never had clunking like this before. I don't think this is related to the bushings themselves causing the clunk. Perhaps now with the solid bushings the clunk is more noticeable but I doubt they are the cause.
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12-31-2020, 02:22 PM	#5
Vybz Captain 133 Rep 673 Posts Drives: Adidas and Puma Join Date: Sep 2010 Location: Kitsap County, WA iTrader: (10) Garage List 2012 BMW M3 [8.60]	That sound is definitely not normal with solid differential bushings. I'd definitely get back under the car to verify things or have your mechanic check it out. __________________ Highway Star Garage / Ruined Luxury Auto InstaGram: Ruinedluxury_vybz NA1 NSX - Storage 2nd Gen Taco - Daily
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12-31-2020, 04:27 PM	#6
divadp17 Private First Class 194 Rep 163 Posts Drives: e90 m3 6mt Join Date: Aug 2018 Location: Bay Area, CA iTrader: (2)	I'm looking at the bushings and there seems to be a slight gap between the subframe and diff bushings which is not sitting flush. I'm going to torque it down to spec and see if this helps. Attached Images __________________ 08 E90 M3 6MT IG: divadp17
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12-31-2020, 05:26 PM	#10
fsmtnbiker First Lieutenant 620 Rep 327 Posts Drives: E92 M3, Evora S, E36 Join Date: Jul 2013 Location: Phoenix, AZ iTrader: (0)	Yeah the bushings being installed incorrectly is probably the cause of the noise. If a shop did this, it is 100% on them to fix it. Those bushings come with clear instructions, there’s no excuse.
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12-31-2020, 05:32 PM	#11
tsk94 Lieutenant Colonel 1522 Rep 1,591 Posts Drives: E92 M3, E82 128i, F82 M4, E36 Join Date: May 2017 Location: Calgary iTrader: (2)	Oh ya, one is backwards lol
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01-03-2021, 05:06 PM	#13
roastbeef Lieutenant General 11583 Rep 12,723 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	makes me wonder if that backwards bushings is creating some misalignment in the driveshaft. its could also be the very common center cv, or its not tightened up a bit. seems to be audible when you lift, which is typical. might as well get a one piece carbon shaft. __________________ Instagram; @roastbeefmike
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01-04-2021, 02:00 PM	#14
justint5387 New Member 19 Rep 17 Posts Drives: BMW Join Date: Dec 2012 Location: CA iTrader: (0)	Oh man, that shop failed... Hopefully the installed the subframe bushings correct. Last edited by justint5387; 01-04-2021 at 06:39 PM..
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