Installed BMR Suspension, Question?

Discussion in '2011+ Mustang GT 5.0L Tech' started by Travis Johnson, Oct 22, 2020.

  1. Travis Johnson

    Travis Johnson Junior Member

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    Hey everyone, hope this is the proper place to post

    so today I’ve had a shop install a pair of BMR Springs with rear Vi-King Shocks and Koni Shocks up front
    This is drag racing suspension but I wanted to know if

    1. The loud creaking groaning noise it makes at every turn is normal with a drag set up since it’s stiffer

    2. Going past 60 makes the engine almost whine like it’s supercharged now, not that it doesn’t sound good but I’ve never heard of suspension mods ever changing the sound of the engine.

    Sorry for long post, Hope someone can help!
     
  2. Joe combs

    Joe combs Junior Member

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    i take it that you didnt install an adjustable panhard bar. if not, lowering the car has the rearend shifted to the drivers side, and probably has the lower control arms in a bind due to the housing being shifted.
     
  3. Travis Johnson

    Travis Johnson Junior Member

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    No I got that, it came with a full kit, differential bearing, Panhard rod, all the control arms
     
  4. Joe combs

    Joe combs Junior Member

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    Not sure which lower control arms you have, as they do several. Mine have grease fittings and are stiff, but quiet. We made sure to put grease on the outer portions of the bushings and on the portion of the bolt that the control arm pivots on.
     
  5. Travis Johnson

    Travis Johnson Junior Member

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    Okay I’ll check them out and see if I can get them lubed or greased a bit
     
  6. JerryZ

    JerryZ Junior Member

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    1. I would say the turning noise is just the harder suspension bushings. Just be sure and keep them greased especially when first installing.
    2. I think the weird engine noise is the same thing. The harder bushings will radiate more engine and drivetrain noise. Unless you did something else with the engine, I doubt it is a problem.
     
  7. AndrewNagle

    AndrewNagle forum member

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    more lube is always better lol
     
  8. dark steed

    dark steed Resident noob

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    Fixed it for you lol


    Sent from my iPhone using Tapatalk
     
  9. oldVOR

    oldVOR forum member

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    Isn't "lubin' the Toobin" the correct term?

    Sorry, I digress....

    As others have noted, without lube on the poly bushings, they will moan a good bit as the suspension articulates. The poly bushings will need a squirt or two of Super-Lube each year to keep them from drying out.
    Also, with a differential bearing, you will get gear whine transmitted into the cabin.
     
    AndrewNagle likes this.
  10. Travis Johnson

    Travis Johnson Junior Member

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    Thanks everyone! I’m getting a alignment today I’ll get my bushing greased while I’m there
     
  11. RED09GT

    RED09GT Senior Member S197 Team Member

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    So, was this all that was installed at this time or were there other parts installed at the same time-or other parts previously installed?

    This information is required in order to receive proper help.
     
  12. Travis Johnson

    Travis Johnson Junior Member

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    This was all installed at the same time, panhard rod, upper control arms, shocks, everything that was part of the NVH "Steak and Potatoes" Package
     
  13. RED09GT

    RED09GT Senior Member S197 Team Member

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    Well, since the package is described as having a side of NVH, sounds like things are normal to me.
     
  14. Travis Johnson

    Travis Johnson Junior Member

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    Okay, just been making sure, I'm still so new to mods for my car especially on my suspension.
     
  15. Sky Render

    Sky Render Stig's Retarded Cousin S197 Team Member

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    You put a differential bearing in. Did you replace all the rubber on the upper control arm with spherical bearings? Because that will give you some serious gear whine in the cabin.
     
  16. RED09GT

    RED09GT Senior Member S197 Team Member

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    Travis Johnson likes this.
  17. oldVOR

    oldVOR forum member

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    For a drag car, that's perfectly fine. If you plan to DP the car, better wear ear plugs.
     
    Travis Johnson likes this.
  18. Sky Render

    Sky Render Stig's Retarded Cousin S197 Team Member

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    LOL, it even says "with a side of NVH!"

    OP, do you not know what Noise, Vibration, and Harshness is? :roflmao:
     
    Travis Johnson likes this.
  19. BottleRocket

    BottleRocket Junior Member

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    So is there a way to tighten up the rear suspension without getting the NVH? I personally can't handle engine or suspension noise. That's why I've never run a solid flat tappet can in any of my street cars.
     
  20. RED09GT

    RED09GT Senior Member S197 Team Member

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    There is a difference between scratching your ass and ripping it wide open. The poly bushing versions of many of the same parts that the OP has on their car are street friendly and do not make what I would consider to be excessive noise, the version of the parts the OP installed are a no-compromise setup geared strictly for racers.

    So, there are a lot of options for tightening things up and still keep the fillings in your teeth from falling out. There will be a compromise so depending on your level of tolerance, there should be options available.
     
    Last edited: Oct 28, 2020
    J.Kidd likes this.
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