BC BR Coilovers Question

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Dec 28, 2009 | 09:30 PM
  #1  
So as long as I can remember, the right rear wheel/suspension area makes a clunking sound every time the car goes over a speed bump or some sort of bump/small pot hole on the road. It doesn't make any noise while turning or on flat surfaces, but as soon as there's any sort of bump or what not on the road, it makes a clunking sound coming from that wheel/suspension corner. I've tried softening the dampening but it didn't make any difference.

I've driven nearly 20K on these coilovers and the spring rates are quite stiff, I believe 10k/8k, I am considering getting softer springs since i'm a daily driver.
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Dec 28, 2009 | 09:33 PM
  #2  
Are your springs snug with your perch and top mount?

I believe this is a common problem with these coils, or majority of the coils for that matter.
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Dec 28, 2009 | 09:39 PM
  #3  
I have never checked honestly, they were installed by a friend and then ride height matched by a local suspension tuning shop so i'm sure they would have noticed.
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Jan 17, 2010 | 10:34 AM
  #4  
Quote: Are your springs snug with your perch and top mount?

I believe this is a common problem with these coils, or majority of the coils for that matter.
are you referring to one of the locking rings on the coilover?

Anyone have any other suggestions?
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Jan 25, 2010 | 04:40 PM
  #5  
I have Bc type Br coils on my S2000, take a look at your coils. Make shure theres is NO gap between the spring and the top hat. I lowered my s2000 this way and its very bad for the strut. You should have 3 adjustment rings on the coil. If the spring is how im sitting raise it back up untill its touched the top hat then turn the ring like 8-10 more clicks. then lower it by lowering the whole shock into where you bolt it up on the bottom. IF its still making the noise, then you have a blown strut.

Hope this helps!
-Jt
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Jan 25, 2010 | 08:59 PM
  #6  
I have these and get no clunk. Is the clunk in the rear or the front
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Jan 25, 2010 | 09:18 PM
  #7  
thanks thatk20vteck1d, i'll look into what you said!

Green Meanie, my noise is coming only from the rear.
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Jan 25, 2010 | 10:57 PM
  #8  
Quote: So as long as I can remember, the right rear wheel/suspension area makes a clunking sound every time the car goes over a speed bump or some sort of bump/small pot hole on the road. It doesn't make any noise while turning or on flat surfaces, but as soon as there's any sort of bump or what not on the road, it makes a clunking sound coming from that wheel/suspension corner. I've tried softening the dampening but it didn't make any difference.

I've driven nearly 20K on these coilovers and the spring rates are quite stiff, I believe 10k/8k, I am considering getting softer springs since i'm a daily driver.
i have the same issue clunking noise from rear suspension area with my hks and its driving me crazy. trying to find out what cause it, im thinking its the top hat maybe, but not 100%.
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Mar 31, 2010 | 10:43 PM
  #9  
Springs are snug and pre-load was set today, still getting the noise. It only occurs when I'm going over bumpy roads and what not. Any other thoughts?
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Apr 1, 2010 | 12:01 PM
  #10  
Check all the mounting hardware. I had a similar noise once. I had tightend them well, But they needed a little more torque. They might have losend up after the install.
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