My BC Racing coilovers are very noisy!
11-09-09, 06:45 AM
#1
My BC Racing coilovers are very noisy!
Is this normal for coilovers? (this is my first coilover set up)
They make a lot of 'click', 'clack', and 'clunk' sounds...
Also when I pull into a driveway that I take on an angle, I hear a noise that sounds like the springs are decompressing in the rear. Hard to describe the noise in words...
But anyway, you coilover guys... is this normal?
They make a lot of 'click', 'clack', and 'clunk' sounds...
Also when I pull into a driveway that I take on an angle, I hear a noise that sounds like the springs are decompressing in the rear. Hard to describe the noise in words...
But anyway, you coilover guys... is this normal?
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11-10-09, 12:00 PM
#9
Hmm, double check spring preload on them:
The proper way to set preload on a coilover-
-Loosen both lock rings under the spring (spring seat ring(top) and spring lock ring(bottom)) so that the spring is loose and can move up and down slightly.
-Tighten up the spring seat ring so that the spring is snug, but do not tighten it down past simply holding the spring snug, this will be "0" preload.
-Now bring the bottom lock ring up so that it is just touching the spring seat ring, but do not tighten to lock, you will be moving the spring seat ring next.
-Now tighten up the spring seat ring so that you are now preloading (compressing) the spring.
-Measure the distance between the bottom ring and the top ring as you are tightening, once there is a 3mm gap between the two rings, you have 3mm of preload on the spring.
-Tighten up the lock ring to lock your preload in place
-Repeat for all 4 corners.
You also want to check and make sure the top 17mm center nut is tight, it's best to check it with an impact gun if you have access to one, a wuick hit is all it should need. A few other areas to check are the lower mounting bolts, the 4 allen bolts that adjust camber, and the 4 lock bolts underneath the pillowball bearing, make sure all of these are tight.
Sometimes noise can come from somehwere else, endlinks, swaybars, and chassis contact can all be problems. Make sure now that the car is lowered and stiffer that you don't have exhaust contact anywhere. These are all common noise issues.
If you still have problems after that I would give BCR a call, they may be able to help further.
The proper way to set preload on a coilover-
-Loosen both lock rings under the spring (spring seat ring(top) and spring lock ring(bottom)) so that the spring is loose and can move up and down slightly.
-Tighten up the spring seat ring so that the spring is snug, but do not tighten it down past simply holding the spring snug, this will be "0" preload.
-Now bring the bottom lock ring up so that it is just touching the spring seat ring, but do not tighten to lock, you will be moving the spring seat ring next.
-Now tighten up the spring seat ring so that you are now preloading (compressing) the spring.
-Measure the distance between the bottom ring and the top ring as you are tightening, once there is a 3mm gap between the two rings, you have 3mm of preload on the spring.
-Tighten up the lock ring to lock your preload in place
-Repeat for all 4 corners.
You also want to check and make sure the top 17mm center nut is tight, it's best to check it with an impact gun if you have access to one, a wuick hit is all it should need. A few other areas to check are the lower mounting bolts, the 4 allen bolts that adjust camber, and the 4 lock bolts underneath the pillowball bearing, make sure all of these are tight.
Sometimes noise can come from somehwere else, endlinks, swaybars, and chassis contact can all be problems. Make sure now that the car is lowered and stiffer that you don't have exhaust contact anywhere. These are all common noise issues.
If you still have problems after that I would give BCR a call, they may be able to help further.
11-10-09, 05:19 PM
#10
its weird, the noise happens more so when the car is cold (just started up)... and its only present when going slow (5-10mph) out of say... my driveway, which is very long and very bumpy. Its then, and pretty much only then I hear my coilovers rattling and clunking.
Other then that, normal highway speeds ect... they sound just like stock.
I'm
Other then that, normal highway speeds ect... they sound just like stock.
I'm
11-12-09, 06:12 AM
#13
its weird, the noise happens more so when the car is cold (just started up)... and its only present when going slow (5-10mph) out of say... my driveway, which is very long and very bumpy. Its then, and pretty much only then I hear my coilovers rattling and clunking.
Other then that, normal highway speeds ect... they sound just like stock.
I'm
Other then that, normal highway speeds ect... they sound just like stock.
I'm
11-12-09, 06:40 AM
#14
Looks to me like its a matter of location (weather), neither B16da9 nor me get this since we live in warmer weather (Miami, Georgia). MdGrwl lives in New Jersey and IxI1871IXI lives in Philly and they both get it when they are cold.
