GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV

Audi s3 springs on golf r

tigeo

Autocross Champion

tigeo

Autocross Champion
Some measurements from my wagon. Ineresting in that the front is "in" the jounce/bump stop for 100% of the compression travel as I suspect many cars are w/lowering springs.

Capture.JPG
 

ZERO815

Autocross Champion
Location
Köln Germany
Car(s)
2017 GTI SE DSG
@tigeo You are right about being in the jounce/bump stop for 100% of the compression travel w/ B8's and lowering springs. If you don't mind I've compared your table to my measurements, found one difference. The block height of the jounce bumper is 14mm at 5kN = 21% of its original length. That changes max travel, and the droop to bump travel.

With measurements I've made on my car and w/ ride height of 345mm (Center of wheel to fender) you are 16mm "sitting" in your jounce bumpers. You could make it better if you shorten the jounce bumper a little bit.

1690903377329.png

Here are the measurements of my car:
1690903454749.png
 

tigeo

Autocross Champion
@tigeo You are right about being in the jounce/bump stop for 100% of the compression travel w/ B8's and lowering springs. If you don't mind I've compared your table to my measurements, found one difference. The block height of the jounce bumper is 14mm at 5kN = 21% of its original length. That changes max travel, and the droop to bump travel.

With measurements I've made on my car and w/ ride height of 345mm (Center of wheel to fender) you are 16mm "sitting" in your jounce bumpers. You could make it better if you shorten the jounce bumper a little bit.

View attachment 287268
Here are the measurements of my car:
View attachment 287269
Wow...thank you for this! Where did you get the front B8 jounce block height data?
 

ZERO815

Autocross Champion
Location
Köln Germany
Car(s)
2017 GTI SE DSG
Wow...thank you for this! Where did you get the front B8 jounce block height data?
I know a guy who knows a guy… ;-) Honestly I have access to some test machines at work.
 

tigeo

Autocross Champion

tigeo

Autocross Champion

00Zero

Go Kart Newbie
Location
Pittsburgh, Pa
Here are the measurements of my car:
1690903454749.png
That rear motion ration is quite a bit off of the ~0.64 most are using and could the difference between droop and compression travel would account for the delta?

The answer is self serving as I'm waiting on parts to put a 350lb linear rear spring on my sportwagen to implement some flat ride and this change to rear MR would really throw a wrench in my plan.
 
Last edited:

ZERO815

Autocross Champion
Location
Köln Germany
Car(s)
2017 GTI SE DSG
I expect there to be a little bit of an error the way I guesstimate it 😅. The numbers w/ my new rear R springs and 034 top mounts: Body 430 extended, 352 ride height. Spring 222 extended, 165 ride height. 57/78=0,73 if my math is right. Tape measure it on your car to compare it.
IMG_6028.jpeg
IMG_6029.jpeg
 

00Zero

Go Kart Newbie
Location
Pittsburgh, Pa
I don't doubt your measurements. I had measured the lever lengths to confirm those measurements others made but i don't know if anyone did it more proper like you have.

I'm wondering if the motion ratio changes over the travel, 0.74 full droop to ride height and ~0.65 from ride height to full compression.

I'll have to pull the spring and measure prior to installing my linear rate springs.
 

HuntR

Go Kart Newbie
Location
Seattle
Has anyone put Audi s3 springs on a golf r before?
Ive been searching for aftermarket springs that dont lower the car but are stiffer and they dont exist. Eibach pro kit which offers the least drop are softer than oem.
My brother has a 2018 s3 and I’ve measured the wheel gap between cars and they are almost identical, the rear is maybe a couple of mm lower. The s3 spring rates are much higher and there are alot for sale used that i can pick up for 100$.

S3 spring rate: 310 front 360rear
Golf r: 195 front 245 rear
Have you looked into Swift Springs? I see people referring these - mostly for Coilovers I think, but they might have options.
 

tigeo

Autocross Champion

mike-y

Go Kart Newbie
Location
Los Angeles
Car(s)
2017 GTI / 2016 R
I've used Ground control stuff on other cars before, and have been pleased with them. it's a great way to get adjustable ride height with off-the-shelf shocks/struts, and pick the rates you want. I was actually planning on buying the rear GC kit, just to be able to lower the back a little bit to be even with the front.
 
Top