Right front spring will not seat properly?

yebokmj · 07-14-2022, 02:26 PM

I swapped out my shocks and springs on my 340i X-Drive for Dinan and Koni SA. My right front spring doesn't seem to want to seat correctly. I've swapped out the spring for a new spring. I've put back the factory strut. I mounted the spring what I believe to be upsidedown and nothing works. OEM strut is right side up SA is upsidedown. Help?

_ObiJon · 07-14-2022, 09:19 PM

Where's your dust boots? From just replacing my top hats, dust boots and lower shims, the dust boot is also an integrated top shim. It has a half coil support (lack of a better term) which helps keep the coil seating correctly to the top hat. Reference FCP Euros site below. This may be the reason for it not sitting correctly.

https://www.fcpeuro.com/products/bmw...op-31306791712

yebokmj · 07-16-2022, 04:02 PM

The boot got torn from it slipping off constantly. I ordered a new one and the issue is still there. But the issue is easier to see with the boot off.

Markyboyt · 07-17-2022, 03:23 AM

As obijon said, the top part of the dust boot is the upper spring pad and locates the spring into the top mount. How are you fitting the spring and assembling the strut?
Building mine up I located the bottom of the spring on the spring pad, dust boot on the top mount and located on the top of the spring then compressed the spring to get the damper through the hole in the top mount all with the spring sitting correctly from the off.

SD Convert · 07-18-2022, 12:41 AM

The spring seat in the strut mount (the piece at the top of the strut & spring that bolts to the strut tower) rotates. Make sure that the bottom is aligned on the strut then rotate the top to align with the top of the spring. Do this when you install the new boots.

yebokmj · 07-18-2022, 10:16 AM

I've swapped the left mount to the right side and now the right is fine and the left is the one with the issue. Here are pictures of me trying yet again on the left side. You will see the strut mount, spring and strut all nicely aligned before being installed and once installed all goes to pot. I believe something inside the rubber of the mount has failed causing a distortion once there is some strain put on the mount as it bolts to the chassis and the lower portion is held in place by the knuckle.

yebokmj · 07-21-2022, 06:52 PM

In case someone else ever encounters this replacing the mount fixed it. Went together without issue. The factory mount only had 30k on it. The bearings were fine must have been the bushing in it. I don't know how it was fine before I took the suspension apart. All I care is it's fixed!

Cesarherc · 04-20-2023, 05:08 PM

Hey guys not sure if anyone can help me but I can’t find the part number or any website that has the lower shims, anyone got a part number? Thanks!

Oksamit78 · 04-21-2023, 03:42 PM

Quote:

Originally Posted by Cesarherc

Hey guys not sure if anyone can help me but I can’t find the part number or any website that has the lower shims, anyone got a part number? Thanks!

What exactly do you call lower shim? Show picture pls.

_ObiJon · 04-22-2023, 04:10 PM

This?

BMW Lower Shim

Cesarherc · 04-24-2023, 05:32 PM

Yes! I actually found it on eBay but I just couldn’t tell from the one picture that was posted if it was the right part lol
anyways I got it ordered already, thanks! Idk why I had the hardest time finding this on Google lol

07-14-2022, 02:26 PM	#1
yebokmj New Member 3 Rep 16 Posts Drives: BMW 335i, Porsche Cayman Join Date: Jan 2020 Location: Salem, NH iTrader: (0)	Right front spring will not seat properly? I swapped out my shocks and springs on my 340i X-Drive for Dinan and Koni SA. My right front spring doesn't seem to want to seat correctly. I've swapped out the spring for a new spring. I've put back the factory strut. I mounted the spring what I believe to be upsidedown and nothing works. OEM strut is right side up SA is upsidedown. Help? Attached Images
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07-14-2022, 09:19 PM	#2
_ObiJon First Lieutenant 208 Rep 306 Posts Drives: 2015 428i xDrive Join Date: Mar 2021 Location: Ashburn, VA iTrader: (0)	Where's your dust boots? From just replacing my top hats, dust boots and lower shims, the dust boot is also an integrated top shim. It has a half coil support (lack of a better term) which helps keep the coil seating correctly to the top hat. Reference FCP Euros site below. This may be the reason for it not sitting correctly. https://www.fcpeuro.com/products/bmw...op-31306791712
	Appreciate 1 casualDIYer447.50 Quote

07-16-2022, 04:02 PM	#3
yebokmj New Member 3 Rep 16 Posts Drives: BMW 335i, Porsche Cayman Join Date: Jan 2020 Location: Salem, NH iTrader: (0)	The boot got torn from it slipping off constantly. I ordered a new one and the issue is still there. But the issue is easier to see with the boot off.
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07-17-2022, 03:23 AM	#4
Markyboyt Private 35 Rep 72 Posts Drives: F36 435d Join Date: Oct 2013 Location: UK iTrader: (0)	As obijon said, the top part of the dust boot is the upper spring pad and locates the spring into the top mount. How are you fitting the spring and assembling the strut? Building mine up I located the bottom of the spring on the spring pad, dust boot on the top mount and located on the top of the spring then compressed the spring to get the damper through the hole in the top mount all with the spring sitting correctly from the off.
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07-18-2022, 12:41 AM	#5
SD Convert Private First Class 65 Rep 127 Posts Drives: 2017 430i convertible Join Date: May 2020 Location: San Diego iTrader: (0)	The spring seat in the strut mount (the piece at the top of the strut & spring that bolts to the strut tower) rotates. Make sure that the bottom is aligned on the strut then rotate the top to align with the top of the spring. Do this when you install the new boots. __________________ 2017 430i w/ Strut Brace / M-Perf brakes / M-Sport anti-sway / 255/40/18 square / iDrive-6
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07-18-2022, 10:16 AM	#6
yebokmj New Member 3 Rep 16 Posts Drives: BMW 335i, Porsche Cayman Join Date: Jan 2020 Location: Salem, NH iTrader: (0)	Mount? I've swapped the left mount to the right side and now the right is fine and the left is the one with the issue. Here are pictures of me trying yet again on the left side. You will see the strut mount, spring and strut all nicely aligned before being installed and once installed all goes to pot. I believe something inside the rubber of the mount has failed causing a distortion once there is some strain put on the mount as it bolts to the chassis and the lower portion is held in place by the knuckle. Attached Images
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07-21-2022, 06:52 PM	#7
yebokmj New Member 3 Rep 16 Posts Drives: BMW 335i, Porsche Cayman Join Date: Jan 2020 Location: Salem, NH iTrader: (0)	In case someone else ever encounters this replacing the mount fixed it. Went together without issue. The factory mount only had 30k on it. The bearings were fine must have been the bushing in it. I don't know how it was fine before I took the suspension apart. All I care is it's fixed!
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04-20-2023, 05:08 PM	#8
Cesarherc New Member 5 Rep 18 Posts Drives: 328i BMW Join Date: Dec 2022 Location: California iTrader: (0) Garage List 2015 328i [0.00] 2015 328i [0.00]	Hey guys not sure if anyone can help me but I can’t find the part number or any website that has the lower shims, anyone got a part number? Thanks!
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04-22-2023, 04:10 PM	#10
_ObiJon First Lieutenant 208 Rep 306 Posts Drives: 2015 428i xDrive Join Date: Mar 2021 Location: Ashburn, VA iTrader: (0)	This? BMW Lower Shim
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04-24-2023, 05:32 PM	#11
Cesarherc New Member 5 Rep 18 Posts Drives: 328i BMW Join Date: Dec 2022 Location: California iTrader: (0) Garage List 2015 328i [0.00] 2015 328i [0.00]	Yes! I actually found it on eBay but I just couldn’t tell from the one picture that was posted if it was the right part lol anyways I got it ordered already, thanks! Idk why I had the hardest time finding this on Google lol
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