Hello

I drive a 94 DB that is completely stock

I purchased brand new koni yellows sp3 and a set of mint condition ground controls for koni.

I'm not too sure why I keep bottoming out in the front? I have OTS spring rates for dc.

Can anyone help me out here?

 

Springs too low?

 

I have the perch at the first setting which is the highest one.

 

But is your perch near the bottom? Also is your Fronts the stiffer of the two springs?

 

The perch is near the top, highest setting not the lowest. The stiffer rates are in the front, correct.

 

Maybe you need stiffer rates.

 

Maybe but is this normal for koni/gc? I mean every single little pot hole sounds horrible..and sometimes when going over a uneven paved road somewhat like a wavy road, It would sound as if its already bottoming out.

 

Any help/advice will be greatly appreciated. This is horrible :'(

 

Sounding like its bottoming and acutally bottoming out is different. Is the sleeve and the perch both at the highest setting? If so that's only about a .5" drop there is no way you should be bottoming out.

 

A picture of the coilover would help.

Try reading the markings on the spring, to know springrate.

 

Is the GC SPRING PERCH near the top or bottom? You could just be too low for that spring rate.

I hope you're referring to the Koni circlip being on the highest setting. You should NOT use the Koni spring perch at all with Koni-specific GC sleeves.

 

What are the exact rates AND length of the spring? Every rate ahs a length that is appropriate...or not. You may well have enough damper travel, but if the spring's rate or length is not correct the spring will reach block height before the damper and bump stop do. This will result in a very nasty crashing sound.

Remove the springs and install the dampers. Then, measure the full suspension stroke - you will need to identify the damper's piston postion at ride height first. Get under the car - on an alignment rack - and tie a zip tie to the pistion. When you perform your travel experiment you will know where bound and rebound begin and end. Then calculate this dimension agsint the spring's block height - can be found on GC's website or Ground Control's web site. If you have progressive rate springs I cannot help you.

If your car is lowered by 1" - 1.5" the front rates should be in the ~ 350lb/in range. I am unfamiliar with a 94 DB, but if it has an SLA front end your ride height and camber will change the motion ratio. So you need to be aware of what that will mean for a ~350lb/in spring.

 

Pictures, pictures, ...

 

x43 on pictures

and if the car is lowered did you cut the bumpstops?
im still confused how you have this all adjusted

also if you can post the part numbers of your springs