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      01-25-2018, 01:13 PM   #1
STLVL335
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Suspension Clunk/Thud

Hello,

I recently installed BC Racing BR coilovers and adjustable endlinks. I've heard plenty of mixed reviews on how to install them. I didn't have any access to ramps so what I did was put the car on jacks and lift both rotors until the center of the hub was 12.5" from the fender. I then installed the endlinks at 12.25" which came to be just barely shorter than stock. After this I am still hearing a clunk/thud when I hit bumps. This sound is mainly coming from the front left and I can't seem to hunt it down. Anyone have any experience with this?
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      01-25-2018, 01:17 PM   #2
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Remove the endlink and see if the clunk is still present.
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      01-26-2018, 01:20 AM   #3
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Today I shortened the endlinks and also hand tightened the top strut bolt. The sound was about cut in half so I'm going to try a pneumatic gun next to snug the top bolt down even further and see if this eliminates the issue.
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      01-26-2018, 01:21 AM   #4
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Quote:
Originally Posted by FCobra94 View Post
Remove the endlink and see if the clunk is still present.
If the issue persists I'll direct my attention back to the endlinks. For now I'm convinced it was the top hat being loose although it felt tight by hand. Thanks for the advice!
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      11-03-2018, 03:10 AM   #5
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So here's an update...

• I had the front left shock rebuilt
• I got new adjustable end-links and torqued them down
• I swapped the front arms for M3 arms... tie rods are stock (arms torqued at tide height)
• I double checked the top bolt on the coil-over
• I checked the strut brace in the engine bay
• Sway bar bushings look okay
• Had the car aligned twice
• Wheels are torqued
• Reset the preload on the coil-over
• Adjusted the U-joint on the steering
• Torqued the tie rod to the hub at 100 foot lbs

I'm honestly puzzled as to what it could be at this point...
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      11-03-2018, 04:19 AM   #6
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Quote:
Originally Posted by STLVL335 View Post
So here's an update...

• I had the front left shock rebuilt
• I got new adjustable end-links and torqued them down
• I swapped the front arms for M3 arms... tie rods are stock (arms torqued at tide height)
• I double checked the top bolt on the coil-over
• I checked the strut brace in the engine bay
• Sway bar bushings look okay
• Had the car aligned twice
• Wheels are torqued
• Reset the preload on the coil-over
• Adjusted the U-joint on the steering
• Torqued the tie rod to the hub at 100 foot lbs

I'm honestly puzzled as to what it could be at this point...
Damn that's frustrating
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      11-03-2018, 04:24 AM   #7
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Quote:
Originally Posted by pizza_nightmare View Post
Damn that's frustrating
Yeah I'm thinking maybe engine mount or something not related to the suspension next...
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      11-05-2018, 02:53 PM   #8
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Mine was from the endlinks not being torqued with proper pre-load. Took me 4 attempts at the end links but finally got the clunk gone. I suspect this is still your issue, I would get ramps if I were you to make sure
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      11-05-2018, 03:11 PM   #9
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Quote:
Originally Posted by BdSM n54iS View Post
Mine was from the endlinks not being torqued with proper pre-load. Took me 4 attempts at the end links but finally got the clunk gone. I suspect this is still your issue, I would get ramps if I were you to make sure
Yeah I'll have to find a spot I can torque them better
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      11-06-2018, 08:15 AM   #10
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Either that or take them off completely and see if the noise persists.
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      11-11-2018, 04:12 AM   #11
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Quote:
Originally Posted by FCobra94 View Post
Either that or take them off completely and see if the noise persists.
Did it sound/ feel like something was popping out of place? And it only does it on one side?
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      11-14-2018, 06:46 PM   #12
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I discovered a clunk while turning the steering wheel in park on the front left which leads me to think this is related to either the tie rods or steering rack...
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