|
Post Reply |
|
Thread Tools | Search this Thread |
02-24-2020, 09:22 PM | #1 |
Captain
341
Rep 941
Posts |
M4 with GC camber plates and MP HAS suspension - crazy road noise
Hi everyone, so here's the deal. I installed GC camber plates and M performance HAS suspension and the front suspension sounds terrible. On bumpy roads there is very noticeable knocking/clunking noises coming from both passenger and driver sides. Sounds like a 20 year old car with bad ball joints/end links. We checked everything and it all looks ok, bolts are all torqued and springs properly seated. The only thing that we noticed is the strut top bolt isn't easy to tighten since it's hard to get the socket on it properly. About half the nut is able to be grabbed by the socket. I'm wondering if this noise is caused by these two nuts not being tightened enough and judging by the marred nut the shop must have had a tough time keeping a socket on it while tightening.
Does the top nut look like it is on there with enough threads grabbed? I can only assume it's either the top bolt/nut or the actual camber plates themselves causing this noise however they were fine when they came off my last M3 and made none of the clunking noise I'm hearing now. Any help appreciated, this is driving me nuts. Here's a pic of the top of the strut so you can see what I mean about the nut.
__________________
2019 M4CS Lime Rock Grey, MP HAS, GC camber plates, MPE
Last edited by avantix; 02-24-2020 at 09:46 PM.. |
02-25-2020, 07:44 AM | #2 |
Colonel
2888
Rep 2,147
Posts |
For what it's worth, I've gone through stock springs, Macht Schnell springs, Bilstein B16 Damptronic coil overs, and now MP HAS. MP HAS is the only kit for me out of those 4 that exhibits any sort of clunk sounds. It's my only disappointment with it. It's rare, but it's there. I'd imagine camber plates only make this worse, but they're noisy no matter what you put them on. Maybe the combo with MP HAS is just a perfect storm.
|
Appreciate
0
|
02-25-2020, 12:02 PM | #3 | |
Brigadier General
3996
Rep 3,533
Posts
Drives: 328d Wagon, M2 Comp, i4 eD35
Join Date: Sep 2016
Location: Bay Area, CA
|
Quote:
__________________
-328d Wagon Build Log (with helpful reference links)
-My YouTube Channel for some of the best DIYs and in depth information Please don't PM me for suspension recommendations unless interested in paid private consultations. |
|
Appreciate
2
erictrainer277.00 CanAutM321104.50 |
02-25-2020, 04:57 PM | #4 |
Captain
341
Rep 941
Posts |
To be honest I didn't check before mounting them. They are not new they were on my last M3 for 2 years but they were new when I bought them. They look older than they are because of the harsh winters here. I'm guessing the only way to check the housing is to drop the suspension again huh?
__________________
2019 M4CS Lime Rock Grey, MP HAS, GC camber plates, MPE
|
Appreciate
0
|
02-25-2020, 07:15 PM | #5 | |
Brigadier General
3996
Rep 3,533
Posts
Drives: 328d Wagon, M2 Comp, i4 eD35
Join Date: Sep 2016
Location: Bay Area, CA
|
Quote:
__________________
-328d Wagon Build Log (with helpful reference links)
-My YouTube Channel for some of the best DIYs and in depth information Please don't PM me for suspension recommendations unless interested in paid private consultations. |
|
Appreciate
0
|
02-29-2020, 03:37 PM | #6 |
Captain
341
Rep 941
Posts |
Got it checked out and surely enough bearing are loose and need to be replaced. Wish I'd checked that before reinstalling them
__________________
2019 M4CS Lime Rock Grey, MP HAS, GC camber plates, MPE
|
Appreciate
0
|
03-05-2020, 06:11 PM | #7 | |
Colonel
383
Rep 2,988
Posts |
Quote:
I was going to have the mono-balls install looked at next week. Perhaps this is the wrong starting point |
|
Appreciate
0
|
03-05-2020, 06:55 PM | #8 | |
Colonel
2888
Rep 2,147
Posts |
Quote:
|
|
Appreciate
0
|
03-05-2020, 08:38 PM | #9 | |
///M SubDriver
1824
Rep 2,781
Posts
Drives: 2017 M3, 2020 X7 40i
Join Date: Jul 2016
Location: DMV
|
Quote:
__________________
///M3 COMPETITION 6MT - 2017 F80 Smoked Topaz Metallic
BM3 / MP-HAS / GC Camber Plates / Carbonstructure Interior X7 XDrive 40i ///M-SPORT - 2020 G07 Arctic Grey Metallic X3 XDrive 30i - 2019 G01 Mineral White (wife's) / 128i 6MT - 2009 E82 Jet Black (son's) |
|
Appreciate
0
|
03-06-2020, 06:48 AM | #10 | |
General
21105
Rep 20,741
Posts
Drives: 2021 911 turbo
Join Date: Jan 2012
Location: Montreal
|
Quote:
I’ve been annoyed by light clunking sounds right from the get-go since I installed my MP-HAS with GC camber plates 18 months ago. My plates were brand new, so it cannot be from bearing wear. I tried tightening the steering rack adjustment but to no avail. I assumed it was an inherent consequence of the MP-HAS and GC plates pairing. With you reporting zero noise, I now have doubts. Maybe my camber plate bearing were either faulty when new or were damaged during install. I’ll check for play on the bearings in the spring.
__________________
Porsche 911 turbo 2021 992 GT Silver
Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black |
|
Appreciate
0
|
03-06-2020, 07:14 AM | #11 |
General
21105
Rep 20,741
Posts
Drives: 2021 911 turbo
Join Date: Jan 2012
Location: Montreal
|
jmg, how's the NVH on your setup?
__________________
Porsche 911 turbo 2021 992 GT Silver
Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black |
Appreciate
0
|
03-06-2020, 07:45 AM | #12 | |
///M SubDriver
1824
Rep 2,781
Posts
Drives: 2017 M3, 2020 X7 40i
Join Date: Jul 2016
Location: DMV
|
Quote:
After I installed the GC plates with the MP HAS, I specifically targeted known "bumps" that would cause any clunking noises, if there were any - this includes a few extra daily commutes driving in/out of Washington, DC for work in the past few days (being uber, hyper sensitive to ANY noises). After 400+ miles or so post install, I can honestly say I have no "clunks" or otherwise abnormal noise coming from the suspension. Now any time you go over any bump there will always be some noise, per se, which is that "thud" sound that any car makes when going over a pot hole, man hole cover, etc on any average street. Even in the most luxurious ride cars you will hear something. So I suspect that technically, when going over common street bumps the "standard" noise I hear post GC/MP HAS install is technically louder than the stock configuration (this would be the additional NVH I guess). But that is a completely unscientific assessment (since I didn't measure any sound levels pre GC/MP HAS install). Other than the more firm ride, which is expected, I honestly don't feel the car sounds any different (and I am still being very sensitive to any noises coming from the car...). My car will be professionally aligned next week by a competent race shop that actually specializes in suspension work. I plan to have them do a modest "shakedown" of my DIY install while they have it. But I suspect they will come back with nothing based on my experience thus far.
__________________
///M3 COMPETITION 6MT - 2017 F80 Smoked Topaz Metallic
BM3 / MP-HAS / GC Camber Plates / Carbonstructure Interior X7 XDrive 40i ///M-SPORT - 2020 G07 Arctic Grey Metallic X3 XDrive 30i - 2019 G01 Mineral White (wife's) / 128i 6MT - 2009 E82 Jet Black (son's) Last edited by jmciver; 03-06-2020 at 07:50 AM.. |
|
Appreciate
0
|
03-06-2020, 08:17 AM | #13 |
Major
1233
Rep 1,164
Posts |
MPHAS here on stock top hats and have had noises, some were solved, others remain a mystery.
1. Creaking noise when car is stationary but turning wheel - This was NOT due to the MPHAS but rather the strut knuckle bolt (which is a 1 time torque bolt). Following the torque specs, i would get a creaking/light popping noise when turning the steering wheel and car wasnt moving. Replaced the bolt with a new one, and gave it a little more persuasion than the recommended spec. Noise gone :-) 2. VERY slight clunking when going over uneven payment at slow speeds (cobble stones, potholes, crappy NYC craters). This usually only happens if wheels are turned slightly and car is moving. There is a clunking noise and the following hasn't helped. Note the noise is so faint that my wife doesn't hear it. - Swaybar link - sound is consistent with loose swaybar link bolt, tightened both sides to no avail (car was jacked up, maybe it should be tightened under load instead) - Top strut nut - its on pretty damn tight, and was tightened under load as well using the special strut nut socket. Dont want to go any tighter and potentially snap something. Other than #2 (since #1 was solved, and not due to MPHAS), no other noises when driving on smooth roads, highways, dips, etc. Learning to live with it. |
Appreciate
0
|
03-06-2020, 08:17 AM | #14 | |
General
21105
Rep 20,741
Posts
Drives: 2021 911 turbo
Join Date: Jan 2012
Location: Montreal
|
Quote:
The noise I hear is not the normal thud when hitting bumps, it sounds normal and solid here. It is a subtle clunking/rattling when driving over small road ripples at lower speeds.
__________________
Porsche 911 turbo 2021 992 GT Silver
Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black |
|
Appreciate
0
|
03-06-2020, 08:19 AM | #15 | |
Major
1233
Rep 1,164
Posts |
Quote:
|
|
Appreciate
0
|
03-06-2020, 09:26 AM | #16 | |
Colonel
383
Rep 2,988
Posts |
Quote:
Turner service (previously Turner Motorsports) are having a look at my car next week. Will report back with their findings |
|
Appreciate
0
|
03-06-2020, 09:53 AM | #17 | |
Major
1233
Rep 1,164
Posts |
Quote:
|
|
Appreciate
0
|
03-06-2020, 12:11 PM | #18 |
Lieutenant Colonel
850
Rep 1,544
Posts |
I'll also chime in and say i do not have any noises with factory strut mounts. I had the creaking/popping noise from the strut pinch bolt and just had to retorque the pinch bolts.
|
Appreciate
0
|
03-06-2020, 02:09 PM | #19 | |
Captain
341
Rep 941
Posts |
Quote:
This is exactly what I am hearing on every single road imperfection. I brought it to the shop and they compressed the suspension with a jack and then let it go all while carefully watching the top of the strut and camber plate and turns out there is some play in the bearings. I purchased a set of new bearings from Ground Control and they are on the way. I will report back when they are changed, I'm really hoping this takes care of it and is not inherent to MPHAS although now that someone reported that their car does not exhibit this behavior with MPHAS I am hopeful it will be resolved. Car is new as is the MPHAS so my money's on the plates.
__________________
2019 M4CS Lime Rock Grey, MP HAS, GC camber plates, MPE
|
|
Appreciate
0
|
03-06-2020, 02:23 PM | #20 | |
///M SubDriver
1824
Rep 2,781
Posts
Drives: 2017 M3, 2020 X7 40i
Join Date: Jul 2016
Location: DMV
|
Quote:
__________________
///M3 COMPETITION 6MT - 2017 F80 Smoked Topaz Metallic
BM3 / MP-HAS / GC Camber Plates / Carbonstructure Interior X7 XDrive 40i ///M-SPORT - 2020 G07 Arctic Grey Metallic X3 XDrive 30i - 2019 G01 Mineral White (wife's) / 128i 6MT - 2009 E82 Jet Black (son's) |
|
Appreciate
0
|
03-06-2020, 09:09 PM | #21 |
Lieutenant General
18493
Rep 14,085
Posts
Drives: G82 M4C X-Drive
Join Date: Mar 2013
Location: Orange County, CA
|
No clunking, no noise whatsoever at cruising and above 100 mph. Car is corner balanced and corners like never before. Harshness is expected, but not as bad as when I was on Springs alone. Road imperfections are transmitted more as well.
__________________
2022 G82///M4 Competition X-Drive - KW-HAS, EBC Bluestuff, Millway Race Camber Plates, Cup2 Connect*, PSI High Flow Midpipe, Lightweight Front Lip, M Perf Flow Through Wing Previous • 2018 F80 ///M3 CS • 2016 F80 ///M3 IG: Raging_G82 |
Appreciate
0
|
03-07-2020, 06:21 AM | #22 |
Captain
341
Rep 941
Posts |
I thought about that as well. Is the nut specific to the camber plates or just a regular nut that comes with the car? If it's the latter it makes no sense that it would look like that on a 1 month old car.
__________________
2019 M4CS Lime Rock Grey, MP HAS, GC camber plates, MPE
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|