Originally Posted by
Mercguy
I have your answer :d
Mercedes SLS struts & levelling valve.
If you can rebuild a citroen, then the sachs SLS damper will be a piece of cake. reshimming to spec will be easy. setting preload is as simple as placing a load over the rear axle and adjusting the actuator linkage.
You'll of course need an engine driven pump, but that's not hard to achieve, and a pair of nitrogen spheres from rexroth or even butcher your citroen ones.... but the principal is pretty straightforward and works well.
The only difference on the SLS mercedes cars is the spring rate is reduced. on an rrc, I doubt a reduction would be required, as the hydraulic struts are assisting the coils as well as controlling the damping. It's just a matter of getting the correct damping rates.
I have already given this serious consideration in my RRC.
Note: I am not talking about the full 4-corner hydropneumatic suspension on the w116 450SEL 6.9, which is a ridiculously expensive setup. I'm referring to the self-levelling struts. These can also be used on all 4 corners with ride height adjustment, not unlike the EAS, however if one was going to that extreme, the EAS would likely be cheaper, as it was already available on later rrc's.
I prefer the ride of coils.
There also used to be a brand of shock absorbers called hi-jackers, which was a crude but extremely effective solution. I remember my old man used them on his HJ prem when towing the boat. worked like a charm. pump them up with a bike pump or servo compressor etc... dead simple and effective.