Coilover Spring Rates

[pwmin]

I have Rev9 coilovers on my 2001 GT.  I have 0 pre-load, which helps, but they're still a little bouncy and harsh no matter what I set the damper setting to.   I have ZZP coilovers on the red car and, while not perfect, they are much better. I'm trying to figure out what spring rate they are or if anyone knows what I should swap them out for? I'm also going to grab more collars so I can lock them together.  They keep coming loose.  They have a thin lock washer, but one of them broke.

[55trucker]

Hmmmmmm.......... the Rev9 supplier doesn't disclose the coil spring rates to the customer?

is it safe to assume you're using the 97-04 Buick Regal coils?

https://coiloverkits.com/collections/rev9-coilovers/products/buick-regal-coilovers-1997-2004-rev9-hyper-street-ii-32-way-adjustable

[pwmin]

2 hours ago, 55trucker said:

Hmmmmmm.......... the Rev9 supplier doesn't disclose the coil spring rates to the customer?

is it safe to assume you're using the 97-04 Buick Regal coils?

https://coiloverkits.com/collections/rev9-coilovers/products/buick-regal-coilovers-1997-2004-rev9-hyper-street-ii-32-way-adjustable

Well, crap, I'm an idiot     

Spring Rate(FRONT): 8 kg/mm (448 lbs/inch) (8k) (Spring Rate(REAR): 5 kg/mm (280 lbs/inch) (5k)

https://www.ebay.com/itm/363295804829

BC (from ZZP): 5k Front, 6k Rear 

ZZP: 6.6kg front spring rate, 6.6kg rear spring rate

 

Looks like I'm going to switch the fronts out for probably 6k if I can find them in 200mmx62mm (7.87" x 2.44") and try that.  I believe the other ones use 10" springs, but I'll have to measure the other car this weekend.

[55trucker]

The softer the spring one uses the stiffer the dampening that's needed to keep ones ride from *floating*. 

Are these Rev9 shocks single or double acting? 

[pwmin]

• 32 Clicks of Rebound Force Adjustment (I'm assuming single)