shocks with clevis mounts noise normal?

stevehifi · 04-20-2021, 06:11 PM

Hi Guys,

I recently installed a bilstein clubsport suspension on my car. The rear shocks have top spherical mounts that get connected to clevis mounts mating directly to the body of the car.

I'm hearing what sounds like small knocks in the back (on both driver/passenger side). I'm not sure what this could be, this is a divorced
setup with spring perch/spring + standalone shock. Could it be the bearings
in the shock making noise?

Has someone encountered this before with similar type suspension (MCS, AST, Moton) that use spherical mounts on top of a shock mated to a clevis mount?

SHould I have installed a gasket between the clevis mount and surface of the body mounting point to reduce noise diffusion into the cabin?

Thanks
Steve

stevehifi · 04-21-2021, 06:42 PM

update it looks like its only on the driver rear side. could it be the spherical bearing in the shock mount or could i have a bad control arm ball joint...

sly1types · 05-10-2021, 08:53 PM

I have the clevis mounts and no noise, but i'm also running a rear coilver.

MetalsMan · 05-24-2021, 11:08 AM

You chimed in on my thread, so happy to offer what I found on mine - One of the bushings on the mcs damper was a little out of spec. I had to force it into the spherical bearing when I installed the setup and it was bound up from the get-go. Wasn't moving freely when needed and creating some binding thus creating the noise over small sharp imperfections

stevehifi · 05-24-2021, 01:02 PM

Are you referring to the top mount (clevis) where you have 2 bushings or spacers (4 (B) in picture) pressing into the spherical bearing to mount with a bolt+nut?

I have the same setup with bilstein clubsport. I think I remember on one of the shocks the bushings moved in and out freely easily and on the other shock it was a bit more snug.

I attached a picture to make sure that is what you mean.

eXstasy · 12-07-2022, 12:41 AM

stevehifi did you ever resolve this issue?

shaddy · 12-07-2022, 12:27 PM

Quote:

Originally Posted by eXstasy

stevehifi did you ever resolve this issue?

This is setup similarly on my Nitrons. On initial install I did DIY I had clunks driving to alignment shop coming from the rear. When I got there I had them double check everything and tighten it to spec and all my clunks went away. I'd start there, sounds simple but especially after driving the vibrations got a little worse so I'd just go around and tighten the top mounts!

stevehifi · 12-09-2022, 04:25 PM

It was the bottom mount. Not tightened enough.

04-20-2021, 06:11 PM	#1
stevehifi Captain 527 Rep 855 Posts Drives: 17 F80 M3 ZCP Join Date: May 2008 Location: Irvine,CA iTrader: (5)	shocks with clevis mounts noise normal? Hi Guys, I recently installed a bilstein clubsport suspension on my car. The rear shocks have top spherical mounts that get connected to clevis mounts mating directly to the body of the car. I'm hearing what sounds like small knocks in the back (on both driver/passenger side). I'm not sure what this could be, this is a divorced setup with spring perch/spring + standalone shock. Could it be the bearings in the shock making noise? Has someone encountered this before with similar type suspension (MCS, AST, Moton) that use spherical mounts on top of a shock mated to a clevis mount? SHould I have installed a gasket between the clevis mount and surface of the body mounting point to reduce noise diffusion into the cabin? Thanks Steve
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04-21-2021, 06:42 PM	#2
stevehifi Captain 527 Rep 855 Posts Drives: 17 F80 M3 ZCP Join Date: May 2008 Location: Irvine,CA iTrader: (5)	update it looks like its only on the driver rear side. could it be the spherical bearing in the shock mount or could i have a bad control arm ball joint...
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05-10-2021, 08:53 PM	#3
sly1types Captain 432 Rep 938 Posts Drives: F80M3 and E46M3 Join Date: Apr 2007 Location: KC iTrader: (0)	I have the clevis mounts and no noise, but i'm also running a rear coilver. __________________ F80 M3-DCT MaxPSI CH, BM3 with F80 Paul E85 and Custom Rom track tune MCS 2Way Remotes Signature SV104 E46 M3 F85 X5M https://www.instagram.com/fastmacm3/
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05-24-2021, 11:08 AM	#4
MetalsMan Second Lieutenant 35 Rep 201 Posts Drives: 2015 Mineral Gray M3 Join Date: Apr 2017 Location: Baton Rouge, LA iTrader: (0)	You chimed in on my thread, so happy to offer what I found on mine - One of the bushings on the mcs damper was a little out of spec. I had to force it into the spherical bearing when I installed the setup and it was bound up from the get-go. Wasn't moving freely when needed and creating some binding thus creating the noise over small sharp imperfections
	Appreciate 0 Quote

05-24-2021, 01:02 PM	#5
stevehifi Captain 527 Rep 855 Posts Drives: 17 F80 M3 ZCP Join Date: May 2008 Location: Irvine,CA iTrader: (5)	Are you referring to the top mount (clevis) where you have 2 bushings or spacers (4 (B) in picture) pressing into the spherical bearing to mount with a bolt+nut? I have the same setup with bilstein clubsport. I think I remember on one of the shocks the bushings moved in and out freely easily and on the other shock it was a bit more snug. I attached a picture to make sure that is what you mean. Attached Images
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12-07-2022, 12:41 AM	#6
eXstasy Private First Class 30 Rep 124 Posts Drives: 16 F80M3, 11 E93M3, 06 E46M3 Join Date: May 2009 Location: Bay Area, CA iTrader: (6)	stevehifi did you ever resolve this issue?
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12-09-2022, 04:25 PM	#8
stevehifi Captain 527 Rep 855 Posts Drives: 17 F80 M3 ZCP Join Date: May 2008 Location: Irvine,CA iTrader: (5)	It was the bottom mount. Not tightened enough.
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