Not really sure where to put this for maximum exposure so if it needs moving, feel free.
Anyway, I'm finally sick and tired of the bouncing. I've determined the bounce is coming from the tired flexing because the front springs don't compress enough/at all. I tested this by setting the struts to full soft and jumping on the upper radiator support area. Reviewing the video revealed that the suspension barely moved at all, but the tire flexed like crazy. I disassembled one of the front struts to see if anything was seized up and the only weird thing I found is the strut only has about an inch of travel between fully extended and fully compressed. It did compress/extend properly and the firmness adjustment works as I could feel a difference when pressing the strut into the body, but that small amount of travel worries me.
As for the rear, I figured the same thing was happening so didn't do a jump test. However, after jacking the car up and down I did notice that the rear does compress with the weight of the car. But only about an inch. This has me thinking that the rears are actually bottomed out and causing bounce that way. I tried adding preload to the rear spring, but the collar is seized in place and I was actually chipping the wrenching surfaces trying to loosen it. I gave up after that. But being a linear spring, I don't think preload makes much of a difference anyway, or that's what I've read anyway.
I did manage to find the part/ID numbers for the springs, but can't get any information when I google them. The fronts are 11.5_205 and the rears are 0_11_250. Ksport lists the spring rates for the BH set as 7.5 kg/mm front and 4 kg/mm rear, but I haven't been able to confirm that's what mine are. I want to replace the front springs with something a little softer and the rears with something stiffer, so if anyone knows what these numbers mean please let me know.
So, basically, I'm hoping someone here can give some insight on the strut travel and the spring rates. There's a guy on the FB page that sells Yellowspeeds that I was hoping would be of use, but it seems he'd rather criticize me for not understanding how coilovers work instead of actually helping me.
Thanks.
EDIT: Scratch some of what I said about the front. I just went out to double check and the front does compress with the weight of the car. The front may also be bottomed out. That being said, is the strut travel the issue or the spring rate?
Anyway, I'm finally sick and tired of the bouncing. I've determined the bounce is coming from the tired flexing because the front springs don't compress enough/at all. I tested this by setting the struts to full soft and jumping on the upper radiator support area. Reviewing the video revealed that the suspension barely moved at all, but the tire flexed like crazy. I disassembled one of the front struts to see if anything was seized up and the only weird thing I found is the strut only has about an inch of travel between fully extended and fully compressed. It did compress/extend properly and the firmness adjustment works as I could feel a difference when pressing the strut into the body, but that small amount of travel worries me.
As for the rear, I figured the same thing was happening so didn't do a jump test. However, after jacking the car up and down I did notice that the rear does compress with the weight of the car. But only about an inch. This has me thinking that the rears are actually bottomed out and causing bounce that way. I tried adding preload to the rear spring, but the collar is seized in place and I was actually chipping the wrenching surfaces trying to loosen it. I gave up after that. But being a linear spring, I don't think preload makes much of a difference anyway, or that's what I've read anyway.
I did manage to find the part/ID numbers for the springs, but can't get any information when I google them. The fronts are 11.5_205 and the rears are 0_11_250. Ksport lists the spring rates for the BH set as 7.5 kg/mm front and 4 kg/mm rear, but I haven't been able to confirm that's what mine are. I want to replace the front springs with something a little softer and the rears with something stiffer, so if anyone knows what these numbers mean please let me know.
So, basically, I'm hoping someone here can give some insight on the strut travel and the spring rates. There's a guy on the FB page that sells Yellowspeeds that I was hoping would be of use, but it seems he'd rather criticize me for not understanding how coilovers work instead of actually helping me.
Thanks.
EDIT: Scratch some of what I said about the front. I just went out to double check and the front does compress with the weight of the car. The front may also be bottomed out. That being said, is the strut travel the issue or the spring rate?
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