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Thread: BC racing coilover spring rates

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Posts: 11-20 of 23
2013-01-03 07:42:54
#11
I had 8/6kg on aprox. 1000kg N14 (same as B13) with ES bushing all around and it was stiff. Next time id get something like 5/4kg for sure.
2013-02-21 02:28:39
#12
So I got my BC's.. 6k/4k
Still trying to dial them in correctly, my friend installed them as part of the group buy price.
I think the preload might be a little too much, he said he did 1/2" of preload. The BC website says to do 5mm, which is the thickness of the spanner wrench they give you. Ill be taking the car to get an alignment soon. Should I have them adjust the preload to 5mm?

I had the stiffness set to 10 clicks from stiff up front & 12 from stiff in the rear.. car was very bouncy even on somewhat smooth roads, especially at speed on the highway. Now I have it set 8 from soft on the front & 10 from soft in the rear. Much less bouncy but still not as smooth as the AGX/Hyperco's were.
2013-02-21 02:34:37
#13
Originally Posted by deception
So I got my BC's.. 6k/4k
Still trying to dial them in correctly, my friend installed them as part of the group buy price.
I think the preload might be a little too much, he said he did 1/2" of preload. The BC website says to do 5mm, which is the thickness of the spanner wrench they give you. Ill be taking the car to get an alignment soon. Should I have them adjust the preload to 5mm?

I had the stiffness set to 10 clicks from stiff up front & 12 from stiff in the rear.. car was very bouncy even on somewhat smooth roads, especially at speed on the highway. Now I have it set 8 from soft on the front & 10 from soft in the rear. Much less bouncy but still not as smooth as the AGX/Hyperco's were.


Comparing "smooth" is difficult since you went from progressive spring rates to linear spring rates. However, that can be a reason to explain why you feel it is not as "smooth".

More importantly, does it handle better? That is the whole point, is it not?
2013-02-21 18:24:26
#14
Turn down the damping, it does not need to be that high for street use. 3-5 up front and 2-3 in the rear and you should be good. If you want to play around and do some cornering i would bump it up a few clicks each.

Preload will effect the alignment so make sure they adjust it first. I would say turn it down, too high can cause the springs to be too stiff.
Last edited by squirlz on 2013-02-22 at 12-25-28.
2013-02-21 18:31:20
#15
Damping, not dampening. Unless you want to moisten stuff.
2013-02-21 20:16:17
#16
I laugh everytime I see a "I installed coilovers" thread and then somewhere in the thread I see a discussion about ride quality and how to improve it. The answer is to NOT install coilovers, if you're concerned about the ride.
2013-02-21 23:17:54
#17
Thanks man, thats what I was looking for.. ill have them adjust pre-load correctly when I get it aligned
2013-02-22 12:24:36
#18
Originally Posted by Kyle
Damping, not dampening. Unless you want to moisten stuff.


I like things moist...
2013-02-22 17:16:26
#19
Originally Posted by hammerin
I laugh everytime I see a "I installed coilovers" thread and then somewhere in the thread I see a discussion about ride quality and how to improve it. The answer is to NOT install coilovers, if you're concerned about the ride.

I know I'm late to the party, but based on the first post, I would have thought CSK's with the existing Hyperco springs.

Street priority, same drop....CSK's.

I had Hyperco/AGX and now have Hyperco/CSK and the latter is soooooo much better than the former that it is mind-blowing. Not even close. Waaaay smoother, way more comfortable, better performance - more planted over rough stuff. The comfort is what blew me away as even with the Hyperco/AGX the car handled better than I can drive.

Two very late cents.
2013-02-23 08:26:55
#20
front 7k rear 5k.....
do you have solid rear beam qt suspension?
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