Confusion over rear suspension

TopElement

1. Shock mounts on chassis and upright were not meant to support the weight of the car.

2. Spring loads are originally inline with vertical wheel loads. With a spring moved rearwards, there is a twisting force on the upright and suspension links.

3. With the spring removed from the center suspension link, there is a a twisting force on the upright when the wheel tries to move it vertically but the damper provides resistance on the rear of the upright.

Not saying any of this is going to cause a failure, but definitely something to think about.

SPOHN

I can see that being very true to a point. But do you think having higher springs weights help with this a little?

__________________

chknhawk

So I am totally new to all of this talk and want to ask an even more simple question. Can I just leave the spring there or maybe put a lowering spring in place of the oem spring AND put my coils on. I got the Stance GR+ and I read a couple places that I should take the spring out. I am thinking that it will not affect the coil and possibly provide some added support on the frame itself. is this wrong of me to think that double damper is not better than single coil damper? insight?

__________________

cv129

I'm thoroughly confused by what you said.

My guess is you wanna run 2 springs (oem location plus the coil springs over the dampers) and 1 damper on each side...?

I think theoretically, sure, but have fun figuring out the right combination of spring rates needed. Both springs will have to be significantly softer, and the rates cannot be directly compared to each other due to the different locations.

2 springs won't yield added chassis support, at least not that I can see here. I think your concept is that it's better to spread the weight load to 2 spots instead of 1. Well technically speaking, the shock mount was never designed to take on car's weight.

__________________
Setrab | RE-71 | SPL | JRZ | Nismo | ARK | Whiteline | RacingBrake | CJM Oil Pan | Ti shield

chknhawk

I guess thats what I was thinking... distribute the damening acriss 2 springs... I figure why not. But I could be totally off on that thought. Call me crazy. Lol

Sent from my SAMSUNG-SGH-I337 using Xparent Skyblue Tapatalk 2

__________________

johnostroski

I just bought Bc racing coilovers and i’m trying to install the rear coil right now. Got it on no problem however the oem spring is too big to get the control arm back on the strut. I tried jacking up the control arm to get it up to it but it couldn’t get high up enough. Do i need new springs or is there a solution to this?

OptionZero

Post pictures to show us what the problem is and give hs more info


Do you have OEM arms or aftermarket

By “too big” do you mean too tall or too wide?

The OEM spring bucket is around…3.5 inches i think? And BC should have supplied springs that easily fit in there


OTOH, the spl midlinks require a spring thats 65mm ID which is smaller than an oem spring

__________________
OptionZero Build Thread