Dimitri_944

wow this is awsome

Squatting Ninja

I need to re-read this once the beers have worked my way out of the system but for now..

V2Rocket

well f*ck me again, RL ingenuity is really coming up these days...thanks for this!

coilovers for under $400, if you have bilstein cut the groove for you...

...just discovered that the bilstein facility to machine the grooves is in my hometown, less than 5 minutes from my house...

CyCloNe!

heck yes thank u!

River

sonofabitch.

wish you posted this before I went with the koni! That is super super cheap and well worth the work!

V2Rocket

robstah, if you get a chance could you measure the OD of the springs? They may just be narrow enough to use on the early suspension...BTW might be worthwhile to flip that bolt around, the one that holds the banana arm mount (by upper shock mount)

come to think of it, I sold a KLA QA1 setup for more than your bilstein setup not too long ago

Richgreenster

Way cool. So what does your car ride like now vs. before?

Squatting Ninja

I would imagine its pretty stiff with the spring plates+new springs?

Ill give this a go this weekend/week while my car is immobile waiting for the new gearbox. Safe to delete torsion bars and use this setup to have a fully adjustable rear ride height I would assume. Anyone confirm?

Ive got a set of these lying around, made for the front of earlier cars but after seeing this, I reakon its worth a bash! Ill measure up the rear shocks and see if I can proceed unless im missing something major:

http://www.ebay.co.uk/itm/1606327334...fvi%3D1&_rdc=1

Thanks a ton robstah for the awesome share!

F40LM

First outstanding write up. Rarely does anyone, including myself, go to such lengths to address so many aspects of a DIY project.

Second....damn you. Now I have another 'must do' project that will bug me night and day until I give it a go.

Great job and keep them coming.

Michael

MAGK944

I must admit I was skeptical about this project but you seem to have pulled it off, well done!

A couple of observations:

1. I'm still not confident running rubber bushes with higher spring rates. Have you looked at a sperical bearing option?

2. Springs are listed ID because the OD changes with spring rates. Without torsion bars do you think the larger OD of the higher spring rate spring needed will clear? (i.e: how much clearance do you have to accommodate 600lb+ springs).

Dimitri_944

Im not suspension expert but isn't that a lot of spring pressure on those rubber bushings?

MAGK944

robstah, when you change the spring rate to a higher rate the springs will be shorter and fatter. ID will stay the same but OD is bigger and the length is changed (shorter) to maintain the same ride height. Just bear that in mind when you measure for clearance.

Without doing the math a 10" 225lb coilover spring with torsion bar might have to be changed to 8" 600lb spring without torsion bar to maintain the same ride height and spring rate. So not only does the spring length get shorter but the OD gets bigger too.

andys-944

Thanks a great write up.

V2Rocket

The factory Turbo Cup coilovers in rear were progressive 200-400lb-ish springs and they used rubber, though they did have t-bars still.

MAGK944

Yep, that's what concerns me. Without the torsion bars you will need to run spring rates 450lb and up. Still these are a great solution to run with torsion bars and much cheaper than the Cups.