Suspension w/o SLS

ilovemy_e34 · 2nd June 2006, 19:16

Okay I just finished reading an exhaustive amout of Threads regarding suspension. I am still left with one question.

I have a 1991 3.6 M5 with stock sway bars but the SLS (self leveling system?) seems to have been deleted??? In the rear I just see some hydrolic lines zip-tied back... I am assuming the front is the same way.

and I am to assume that mine never came with EDC (Electronic Dynamic Control??)

So with that in mind should I go with the 535i suspension setup???

H&R front lowering (535i) 1.3 inches
H&R rear lowering (535i) .75 inches

or should I still install the the M5 set
which is 1.25 in the front and .3 in the rear.

(I plan to use Bilstein Sport shocks and stock sway bars and tirewear is not really a big, big deal for me, though I will take it into mind)

Does anyone else have an M5 like mine. It makes me sad... like a dog with three legs. lol
Thanks guys,

noMi5 · 2nd June 2006, 19:58

Quote:

Originally Posted by ilovemy_e34

Okay I just finished reading an exhaustive amout of Threads regarding suspension. I am still left with one question.

I have a 1991 3.6 M5 with stock sway bars but the SLS (self leveling system?) seems to have been deleted??? In the rear I just see some hydrolic lines zip-tied back... I am assuming the front is the same way.

and I am to assume that mine never came with EDC (Electronic Dynamic Control??)

So with that in mind should I go with the 535i suspension setup???

H&R front lowering (535i) 1.3 inches
H&R rear lowering (535i) .75 inches

or should I still install the the M5 set
which is 1.25 in the front and .3 in the rear.

(I plan to use Bilstein Sport shocks and stock sway bars and tirewear is not really a big, big deal for me, though I will take it into mind)

Does anyone else have an M5 like mine. It makes me sad... like a dog with three legs. lol
Thanks guys,

Hi there,

Just deleted the SLS on mine (1990 3.6 M5) after one of the rear struts started leaking intermittently.
As far as I believe the 3.6 never came with EDC - only SLS on the rear.
I opted for the 535i springs, 29672-1, coupled,at the moment,with standard shocks on the front and Koni 8240-1076 on the rear.
No problems so far whatsoever - obviously sits a bit lower at the front now (tyres fill the arches nicely) but very little difference at the rear, and the ride is pretty close to standard - depending on how soft/hard you set the Konis.

Simon.

Sebring NL · 3rd June 2006, 01:13

Hi

3.6 never had EDC

Change PAS pump to 535 one when deleting SLS. Topping off hoses will work temporarily only as my SLS hose blew @ 220 km/h. Recircing will cause the press difference between the whole SLS trace and the 50cm return hose to become evident through a pulsing noise, as many members can vouch for after riding shotgun in my car at the Nürburgring.

noMi5 · 4th June 2006, 09:47

Quote:

Originally Posted by Sebring NL

Hi

Change PAS pump to 535 one when deleting SLS.

Hi,

Heres a question.
Once the SLS has been deleted, and the PAS pump is therefore only serving the steering, does the system still require Pentosin or was that specific oil only required for the SLS struts.
I`m assuming that if you were to change to the 535 one you would be using standard PAS oil ie ATF.

Simon.

cchase009 · 5th June 2006, 20:29

All,

changing the power steering pump is not required as long as the supply and return lines are connected together (recirculated) with the female-female ended brake hose from the 1600. I deleted my SLS and I no such noise.

Regards,

C. Chase
'91 M5

illjah · 5th June 2006, 21:52

mines topped off, but welded, no probs so far, but there is a lot of un-necessary pipework & accumulators that I'd like to get rid of, as SebringNL states (and as I feared when first doing this) they are a possible source of leaks.

I've got H&R and Koni adjustables all round, i really like it.

cchase009 · 6th June 2006, 03:14

When you use the hose to recirculate the supply and return lines, both accumalatros and the piping in the rear can be removed.

Check www.bavauto.com under the suspension section for an M5. They sell a kit which you DO NOT need to buy, just the brake hose from the 1600. The pdf diagram they provide on the site shows the parts that can be removed.

C. Chase
'91 M5

noMi5 · 6th June 2006, 08:32

Quote:

Originally Posted by cchase009

When you use the hose to recirculate the supply and return lines, both accumalatros and the piping in the rear can be removed.

Check www.bavauto.com under the suspension section for an M5. They sell a kit which you DO NOT need to buy, just the brake hose from the 1600. The pdf diagram they provide on the site shows the parts that can be removed.

C. Chase
'91 M5

Thats the site I referred to when doing mine.
Instead of buying either the kit or a brake hose I went to the local motor factors who supply brake pipe and fittings and purchased the threaded connection you use at the ends of the rigid pipework (there were 2 different sizes so I purchased a couple of each - a matter of pence) and welded the hole closed - hence a solid plug which I used to plug the system at the regulator (as per the pdf diagram on the site).http://www.bavauto.com/Assets/inst_p...34ElimKits.pdf
This allowed me to then remove everything back from the regulator.

Rorschach · 3rd January 2011, 01:55

Quote:

Originally Posted by noMi5

Heres a question.
Once the SLS has been deleted, and the PAS pump is therefore only serving the steering, does the system still require Pentosin ?...

Also interested .. So, is the steering pump also designed to run specifically on the CHF (7.1/11s) ? Or after the sls delete , one can use regular ATF ?

Thankyou.

Sebring NL · 4th January 2011, 00:05

Always use prescribed PEntosin , even if you mix them up (dealers have the tendancy to say that 11 is an improved version of 7, which is SO wrong) you will get leaks.

ONLY use the Pentosin as described on the lid.