Well it's been awhile, and projects keep stacking up due to my recent work travel schedule, but the coilover conversion is complete!
Pretty straight forward really. The only real gotcha on the v12 cars is the tandem pump that handles both abc and PS (through separate reservoirs). On the v8 cars you can just swap to a ps only pump from a non abc car, but since all the v12s were abc you're stuck with the tandem pump. Running them dry eventually leads to pump failure, and it's a bitch to change, so I just cut the main pressure line and fed it back into the return line...that way fluid keeps running through both sides of the pump and it stays happy.
Otherwise, some other things to note:
Cost was not bad at $950 shipped from the U.K. Had I done this conversion immediately when I got the car I could have saved 500-600 on my initial ABC related repairs.
Install was pretty simple. The fronts went very quick....rears took a little longer, but would have been quicker if I'd used my lift instead of a jack. My other v12 Benz was on the lift and I didn't feel like it was a big enough deal to move it when I started the coilover job....lesson learned. Rerouting the pump hydraulics and setting the height probably took longer than the strut install.
The ride is good, not ABC hydraulic good, but still not bad at all. The difference is more noticeable on the rough stuff than anywhere else really. Plus, I now have squat, dive, and some body roll that ABC took care of in the past, but that's to be expected. I'm still fine tuning the settings, and currently am about halfway between soft and hard, so can tune some of that out. However, this is my commuter and will never be a track car, so I don't want to make it too stiff.
After completion I had the big red abc malfunction light that you can't get past initially. I pulled the f46 fuse, which got rid of that and now I just have a white warning light than comes up on startup, but I can just cancel out of. Strutmasters makes a module to get rid of it completely, but it's $400, so I'll just keep hitting cancel for now.
I'm still tweaking the ride height. After a few tries I'm close now, but need to come up on the front slightly. Once I get it right, and find another hosting site other than stupid photobucket, I'll post some pics.
Anyway, I took the CL on my commute today, which is 104 miles round trip, and am very happy with the results. I loved the feel of ABC, but the converted ride is definitely good enough, I have the piece of mind of not having to worry about a sudden hydraulic failure now, or the time consuming repairs associated, and it should save significant money in the long run.
Now if I can just find the time to tackle the needed turbo rebuild on the s600......