MyE28.com

today finally I found some time to switch the rear springs , 'Pink' code Bielstein OE match , with some cheapish coil over set up that I had laying around for some time
the reason I am doing this is very simple ! after I removed so much weight from my car , the rear end jumped up 3" so now instead cutting the almost brand new OE springs I tried to go the coil over way . but since the after market ones I have seen for our e28s are so high $$ , I just went and bought some fleebay pieces and tried to fitt'em myself , so here you go

the steps inside the cylinder were the perfect fit over the Billy HDs

all the pieces from the puzzle


the size difference between the OE ones and the fleebay ones

it is so easy to put them together , no need of a spring compressor either .
I think this set up is perfect cause you can chose the hight by switching the ring to a different groove and the rate of the spring by tightening the culler nut . I think with the Billy sport would be even better , but ... I have HD so ...



they fit just fine

now I just have to either put some more weight in the rear or get the 10" ones , cause the car dropped only an inch !

I am sure this set up would be better in a stock car but my isn't any more so this is gonna be done all over again once l get some sorter ones

the 'Pink' OE BMW springs will be in the FS section
http://www.mye28.com/viewtopic.php?p=920898#920898

I have Bilstein HDs too. Do you remember if the sleeve's diameter was 2"? Will this work? I was thinking about buying the coilover sleeve on Ebay and some 2.5" springs from SummitRacing.

http://www.ebay.com/itm/New-7-Coil-Over ... 2c&vxp=mtr

D Unit wrote:I have Bilstein HDs too. Do you remember if the sleeve's diameter was 2"? Will this work? I was thinking about buying the coilover sleeve on Ebay and some 2.5" springs from SummitRacing.

http://www.ebay.com/itm/New-7-Coil-Over ... 2c&vxp=mtr

the diameter of the color nut was just the perfect size to fit over the Billy HDs [ just a tiny bit loose ] , and the step was just the perfect size that allowed me to slide it over the locking ring . I don't remember the exact size , so if you measure your shocks outer diameter then you will know the size you need

If you drop your car too much on those HD, you will bottom them out excessively.

Yes, 2" threaded collars work on Bilsteins.

Lowering the clip just lowers the starting point of your perch. Raising the perch does not change the spring rate. It changes the preload on the spring.

Do you have any idea what spring rate you have?

mooseheadm5 wrote:If you drop your car too much on those HD, you will bottom them out excessively.

Yes, 2" threaded collars work on Bilsteins.

Lowering the clip just lowers the starting point of your perch. Raising the perch does not change the spring rate. It changes the preload on the spring.

Do you have any idea what spring rate you have?

I am planning to use them on my e23. I was told the e28 HDs were basically the same as the discontinued e23 rear sports. I was thinking of using an Eibach 6" or 7" spring, but not sure which spring rate to use. Any suggestions?