Rear end suspension rebuild

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
ChrisA
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Rear end suspension rebuild

Post by ChrisA » Thu Nov 03, 2022 11:19 am

Morning guys

I thought I’d make a post showing the progress of my rear end rebuild (now that there is some :oops:).
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As most of you know I brought some 19” Rotors to fit to the RS. Sadly they didn’t fit over the standard front callipers. This lead to making some spacers to see what width was required. 12.5mm ply was perfect so I brought some 12mm spacers which made the stance look awesome however, with the wider stance the wheels now rubbed the arch lining. 🙄
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Not a problem I thought, she’s sitting on Bilstein PSS9, I’ll just lift her up. Unfortunately the Billies were so corroded I couldn’t for the life of me move the base plate.

So after a bit of back and forth I brought a new set of PSS9s and ancillary’s and fitted the fronts. These were very straight forward to fit however the backs were proving to be a pain to remove, probably due to the kids climbing all over me every time I attempted to have a go.
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I’ve now decided to get a mobile mechanic (Ade) to get them off as it’s taken nearly a year to get to this point.

I’ve asked Ade to remove the rear coilovers, upper and lower control arms, front and rear ARBs and front and rear callipers.

In the pouring rain he put a few hours in and got the NSR coilover, disc and calliper off.

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It’s so nice to see a bit of progress and I’m really looking forward to seeing the end results.
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ChrisA
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Re: Rear end suspension rebuild

Post by ChrisA » Thu Nov 03, 2022 6:11 pm

Also, as you can see in the picture the off side drive shaft has a patch of corrosion. Is this common, is it anything to worry about, can it be tarted up or am I best off replacing the drive shafts?

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Shoppinit
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Re: Rear end suspension rebuild

Post by Shoppinit » Thu Nov 03, 2022 7:03 pm

It’s only cosmetic. You could give it a bit of a sanding down and use some hammerite black on it (not the textured stuff).
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

ChrisA
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Re: Rear end suspension rebuild

Post by ChrisA » Thu Nov 03, 2022 7:15 pm

Thanks. 👍

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Capt Ric
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Re: Rear end suspension rebuild

Post by Capt Ric » Sat Nov 05, 2022 5:11 pm

Chris,
Rotors look great.
How are the EBC floating discs?

Lander91
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Re: Rear end suspension rebuild

Post by Lander91 » Sat Nov 05, 2022 8:34 pm

Man I love those wheels, so hard to find down here.

ChrisA
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Re: Rear end suspension rebuild

Post by ChrisA » Sat Nov 05, 2022 10:18 pm

Capt Ric wrote:
Sat Nov 05, 2022 5:11 pm
Chris,
Rotors look great.
How are the EBC floating discs?
In all honesty I couldn’t give you and honest impartial review as they’re the only disc I’ve experienced on a 6 and I’ve yet to push the car to a point where I’ve had to rely on the brakes. However i can’t say they’ve given me cause for concern and they look smart. 👍

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Re: Rear end suspension rebuild

Post by ChrisA » Sat Nov 05, 2022 10:23 pm

Lander91 wrote:
Sat Nov 05, 2022 8:34 pm
Man I love those wheels, so hard to find down here.
Seem to be ten a penny over here. One thing I would say is that OEM Rotors don’t offer much in the way of a lip for reskimming, where as the copies have a lot of meat on them for diamond cutting. It would be interesting to know if there’s much weight difference between the OEM and copies.

Astrosquirrel
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Re: Rear end suspension rebuild

Post by Astrosquirrel » Sat Nov 05, 2022 10:46 pm

Good to see progress. Keep at it. Looking forward to the results.

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ChrisA
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Re: Rear end suspension rebuild

Post by ChrisA » Sat Nov 12, 2022 1:35 pm

So the rears are stripped back now with only a few more parts to come off.

I was wondering if anyone knew how or if it’s possible to split the plastic arms from the retaining clip of these sensors so I can clean them up (which I think are for the DCR?)?
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Also, again in the front arch, what is this cylinder to the right of the two brake pipes doing? I’d like to get that bracket off for powder coating but that item looks expensive, important and fragile. 😬
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Shoppinit
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Re: Rear end suspension rebuild

Post by Shoppinit » Sat Nov 12, 2022 2:21 pm

Those are the level sensors for the headlight levelling. It should be possible to remove the sensor. Can’t remember how though. The DRC doesn’t have any sensors.

The cylinder looks like the connection point for the DRC shock, presumably no longer present.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

ChrisA
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Re: Rear end suspension rebuild

Post by ChrisA » Sat Nov 12, 2022 2:34 pm

Thanks mate.

They’ve got replica’s on eBay, do you know if they reliable or if OEM are still available?

And there’s a headlight levelling sensor on the back too?
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DRC no longer fitted and Grizz said it would be a PITA to refit. So is there a point further back that it can be removed to?

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Shoppinit
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Re: Rear end suspension rebuild

Post by Shoppinit » Sat Nov 12, 2022 3:00 pm

Not really. It’s all intertwined. I’d just leave it. That’s what I did. Maybe someone one day will want to restore it. Who knows.

There’s a sensor at the back and one at the front. Don’t know about the cheapo copies. Oem is best obvs. Are yours faulty then?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

ChrisA
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Location: Langstone, nr. Portsmouth

Re: Rear end suspension rebuild

Post by ChrisA » Sat Nov 12, 2022 3:05 pm

Shoppinit wrote:
Sat Nov 12, 2022 3:00 pm
Not really. It’s all intertwined. I’d just leave it. That’s what I did. Maybe someone one day will want to restore it. Who knows.

There’s a sensor at the back and one at the front. Don’t know about the cheapo copies. Oem is best obvs. Are yours faulty then?
Not faulty, just rusty at the clamps. Will take them off and see what I can do with them. Might have to tape them up and paint if I can’t split them.

Sxcarmyboi
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Re: Rear end suspension rebuild

Post by Sxcarmyboi » Sat Dec 03, 2022 3:33 pm

I done a full resend rebuild a couple of years ago on my rs6 if you have any question.

I did have a second complete subframe that I stripped down, cleaned and then fitted all my parts to. The. One weekend me and a mate swapped them over
C5 RS6 Avant
800+ BHP loading
1100+ ft lb loading

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