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Thread: MCS 2WNR setup questions

  1. #26
    Join Date
    Mar 2006
    Location
    Menlo Park, CA
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    1,796
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    95 M3 & Legacy Manwagon
    Quote Originally Posted by lowflyer View Post
    It's probably not the shock mounts. Both MCS and Vorshlag confirm that the 2WNR rear shocks can make a knocking or clunking noise,primarily at low speeds over sharp impacts like expansion joints which is the only time I hear it. I switched from Vorshlag spherical RSMs to Rogues and the noise persists. Pretty sure Bimmerman 535i has the same experience as discussed on another forum. Still love the suspension though
    Mine clunks all the damn time. I am not convinced the MCSs are to blame though, so I'm not going to speculate until I've finished Project OE-Rubber-All-The-Things. I've removed and replaced everything except for the poly bushings and spherical RTABs at this point, so...they're the last of the suspects.

    I will echo that the clunking volume was reduced going from GC Spherical RSM to GC Poly RSM, but that the clunking itself still persists.
    "Fear disturbs your concentration" -Sabine Schmit

    1995 BMW M3/2/5-- S54 + Mk60 DSC, California Smog Legal (Build Thread)
    1998 BMW M3/4/5 Alpine/Modena, Z3 Rack, otherwise stock-- DD without burbles
    2017 Chevy SS, Orange Blast Metallic, 6MT -- DD with burbles

  2. #27
    Join Date
    Dec 2008
    Location
    O Fallon,IL
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    133
    My Cars
    2005 M3,1999 528i
    The bearing at the bottom of the shock may contribute to the noise as well but haven't attempted to or figured out how to address that.
    Mike Kenney
    E46 M3

  3. #28
    Join Date
    Jun 2011
    Location
    Vancouver, BC Ca
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    3,255
    My Cars
    1993 325is
    The spherical bearing at the bottom of my AST rear shocks is replaceable and not terribly expensive.

  4. #29
    Join Date
    Aug 2002
    Location
    Denver, CO
    Posts
    5,343
    My Cars
    '98 M3
    Confirmed the clunking noise is coming from the MCS lower heim joints. Just going to live with it, replacing these is fool hardy as they'll start clunking again in short order.
    '03 911 Turbo 6MT fun car
    '18 Toyota Land Cruiser Daily driver/Ski Machine/Off Roader
    '15 Cayenne Diesel Wife's DD
    '17 KTM 690 "Adv" 2 wheeled Adventurer

  5. #30
    Join Date
    Aug 2012
    Location
    Central, MD
    Posts
    3,847
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    1995 M3
    Ahhh...metal on metal joint. Cause, race car! My front ARB spherical joints make it about 20 days before making noise. Just a tiny itsy bitsy bit of slop and clankity clank.

  6. #31
    Join Date
    Aug 2002
    Location
    Denver, CO
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    '98 M3
    Yup, exactly. Not sure how much more performance it really gives over a rubber bushing there as well. My suspicion is, not really all that much and definitely not enough to deal with noise it creates on a track/street car...
    '03 911 Turbo 6MT fun car
    '18 Toyota Land Cruiser Daily driver/Ski Machine/Off Roader
    '15 Cayenne Diesel Wife's DD
    '17 KTM 690 "Adv" 2 wheeled Adventurer

  7. #32
    Join Date
    Aug 2012
    Location
    Central, MD
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    1995 M3
    Agreed, I'd personally prefer high quality rubber/poly/non-metal bushings.

  8. #33
    Join Date
    Nov 2005
    Location
    MA
    Posts
    2,706
    My Cars
    Cayman S, Golf GSW, E30
    Interesting. My 1WNRs have a spherical bearing at the rear shock bottom and do not clunk. Dead silent. I'm extra sensitive to it after my TCK DA rears always clunking, its so freaking nice to have it quiet back there.

    That said, i only have maybe... 200 miles on them? But my streets are horrible.

  9. #34
    Join Date
    Feb 2004
    Location
    Brew City, WI
    Posts
    697
    My Cars
    e30 m3, 318is, 88ix
    The MCS stuff really is great. My e30 has 700/900 springs and is a full on race car. I’ve done one race with MCS 2WNR and it hits curbs and takes bumps in the brake zones like it’s on air. I love it so far. Even driving around the shop area that did my alignment and loading it on the trailer I could feel the difference from the GC Koni SAs I took off the car. Now I have to relearn the cars limits and make them a worthy investment!

  10. #35
    Join Date
    Aug 2002
    Location
    Denver, CO
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    5,343
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    '98 M3
    Yeah, give them some more mileage Dan and those heim joints are going to start making a racket
    '03 911 Turbo 6MT fun car
    '18 Toyota Land Cruiser Daily driver/Ski Machine/Off Roader
    '15 Cayenne Diesel Wife's DD
    '17 KTM 690 "Adv" 2 wheeled Adventurer

  11. #36
    Join Date
    Mar 2006
    Location
    Menlo Park, CA
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    1,796
    My Cars
    95 M3 & Legacy Manwagon
    That joint on my MCSs doesn't make noise, so I wouldn't automatically assume that's the issue. I've also got 10k+ miles on them.

    The MCS-clunking I experienced was an internal shock issue. The majority of the clunking on my suspension is unrelated to the MCSs, and remained clunking while the MCSs were off for rebuild.
    "Fear disturbs your concentration" -Sabine Schmit

    1995 BMW M3/2/5-- S54 + Mk60 DSC, California Smog Legal (Build Thread)
    1998 BMW M3/4/5 Alpine/Modena, Z3 Rack, otherwise stock-- DD without burbles
    2017 Chevy SS, Orange Blast Metallic, 6MT -- DD with burbles

  12. #37
    Join Date
    May 2004
    Location
    Birmingham
    Posts
    88
    My Cars
    E36 & E34
    I have also made a recent MCS purchase and have gone with the 2W Remotes - Looking for that magic set up as well - I can say that I am very happy with the product after two weekends but still searching the optimum adjustments

  13. #38
    Join Date
    Nov 2007
    Location
    Orlando
    Posts
    259
    My Cars
    99 M3, 11 GT3RS
    Quote Originally Posted by Montana View Post
    I have also made a recent MCS purchase and have gone with the 2W Remotes - Looking for that magic set up as well - I can say that I am very happy with the product after two weekends but still searching the optimum adjustments
    I run mine with stiffer compression in the front that the BW recommendations, but I am still on my stock sway bars...
    99 M3 STU/ GTS3 Project

  14. #39
    Join Date
    Feb 2007
    Location
    Union City/Sacramento
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    4,347
    My Cars
    1999 M3
    Quote Originally Posted by tripitz View Post
    Also running MCS 2-way NR. The ride quality with big springs is amazing.

    Also echo the odd "clunk" sounds that I get. I thought it was the rear shock mounts; it's not. I also thought it may be the battery. Neither one seems to be the issue.

    I took the car off the road. It's track only at this point, so I don't really care. All insulation, etc. is stripped out so the clunk is the last thing I care about with respect to noise!
    Bumping a 3 year old thread - I recently installed some MCS singles and also have the clunking and thought it was the shock mounts and battery as well, but also might be rear springs (5" 800lb) too short. We'll see next time I get back there.

  15. #40
    Join Date
    Feb 2007
    Location
    louisville ky
    Posts
    941
    My Cars
    87 325
    MCS NR dampers can be clanky....

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