Suspension overhaul advice - 1985 CQ

andya · 12-08-18, 06:35 PM

Hi all

Just after some advice - I'm replacing the shocks and springs all round on my cq. At the same time I'm doing the wheel bearings, top strut mounts, ball joints and converting to poly wishbone bushes. On the rear I am also replacing the rear discs. Is there anything else I may think about replacing while the struts are off??

Many thanks
Andy

droopsnoot · 13-08-18, 12:11 PM

I'm interested in this, as I will need to do similar to mine once I've welded it back together.

Are the parts generally quite easy to find, or have you had trouble sourcing some things?

So far I know that I've got to change some of the mounts on the rear subframe, and I'm a bit annoyed that it seems that I've got to put poly on it, as I'd rather use normal rubber ones. I haven't spent much time looking, though. I've got to do springs - I swapped the fronts ages ago, and I'm sure they were too long for the car, and combined with the rears being original, it's given the car quite a nose-up look.

It would make sense to do some wheel bearings and stuff while it's all in pieces, but as I'm not really sure what I want to do with the car once it's finished, it's difficult to decide which way to go with it.

mikes2 · 13-08-18, 12:30 PM

ARB bushes are the only ones missing.

Be careful with the track rod ends when you release them from the struts or you'll damage the rubber boots and need to replace. Now's a good time as it will need aligned anyway

If you want to go even further, subframe bushes and gearbox / diff mounts

Hanuman · 13-08-18, 12:49 PM

I did a comprehensive rebuild on the quattro a few years ago, now.
Starting with a full set of struts which i'd purchased earlier, I slowly collected all the parts over time, and then built the whole lot up, to swap in one go.

A plan that almost worked. I was going to use some offset subframe mounts at the front, with the new subframe, but ran into some small technical issues (not helped by some really poor advice from a so-called quattro expert)

The result is the rear subframe is on alloy mounts, the front on poly. The wishbones all on poly. I used Koni dampers, but had no issues with the OEM dampers which i'd used about 10 years earlier, save they were due for a replacement.

I just replaced all the joints and arms in one go. The one thing I forgot was to check the steering rack gaiter. It was split, and gave up the ghost a short while later.

Track arms were fully dismantled, packed with grease, before assembly. Something i've done many times, and avoids the pain of seized arms later when you want an alignment.

parts list-
Ball joints
bushes
mounts
track arms
damper dust shrouds
(4V6-Industries) disc brake shields (time required for getting rotten bolts out from the struts)

Worth overhauling the brakes at the same time.
Hoses, calliper piston dust seals, calliper pin dust shields. Attention to any brake hardline while in there, and access is improved.

Diff mounts?

andya · 13-08-18, 06:32 PM

Wow thanks for the input guys - ARB bushes is the glaring one I forgot, so thanks.

Droopsnoot - I can source most of my parts from Pete Reeve at Quattro Corner. The poly bushes are readily available from sellers on eBay - failing that again Quattro Corner or you can try AM Cars at Ilminister.

I've opted for koni shocks for the rears. Haven't yet purchased fronts, I'm edging towards a pair of Bilsteins as I hear they are much harder than the konis and oem boge shocks. Happy to get some feedback on that

Droopsnoot - you've also got a cq haven't you?

Regards
Andy

droopsnoot · 13-08-18, 06:47 PM

Yes, I've got a cq that I used to run as a daily driver from 72k to 273k, then took it off the road for various reasons. I started a rebuild thread on it as I've started welding the back end together: http://www.classic-audi.co.uk/forum/...ad.php?t=38341

Cheers for the pointers on parts suppliers. I carry a list of Vauxhall bits around with me when I go to autojumbles, and it's about time I started carrying the same for the cq.

andya · 13-08-18, 06:53 PM

Quote:

Originally Posted by droopsnoot

Yes, I've got a cq that I used to run as a daily driver from 72k to 273k, then took it off the road for various reasons. I started a rebuild thread on it as I've started welding the back end together: http://www.classic-audi.co.uk/forum/...ad.php?t=38341

Cheers for the pointers on parts suppliers. I carry a list of Vauxhall bits around with me when I go to autojumbles, and it's about time I started carrying the same for the cq.

I've been to many autojumbles in my time - beaulieu is only down the road. Found very little!! Unless by luck you find someone who has travelled from Germany to sell their wares.....

20vcqdriver · 16-08-18, 12:59 PM

Quote:

Originally Posted by andya

Wow thanks for the input guys - ARB bushes is the glaring one I forgot, so thanks.

Droopsnoot - I can source most of my parts from Pete Reeve at Quattro Corner. The poly bushes are readily available from sellers on eBay - failing that again Quattro Corner or you can try AM Cars at Ilminister.

I've opted for koni shocks for the rears. Haven't yet purchased fronts, I'm edging towards a pair of Bilsteins as I hear they are much harder than the konis and oem boge shocks. Happy to get some feedback on that

Droopsnoot - you've also got a cq haven't you?

Regards
Andy

I have tried all damper variations in the 28 years I've had my Cq and Koni adjustables set to one full turn towards firm have proven to be ideal. Fully firm for a track day but you'd not want that on our bumpy uk roads

Oh and this is in combination with H&R springs

andya · 16-08-18, 07:16 PM

Quote:

Originally Posted by 20vcqdriver

I have tried all damper variations in the 28 years I've had my Cq and Koni adjustables set to one full turn towards firm have proven to be ideal. Fully firm for a track day but you'd not want that on our bumpy uk roads

Oh and this is in combination with H&R springs

Great thanks for that

Duffy3074 · 13-08-18, 06:45 PM

Quote:

Originally Posted by Hanuman

I did a comprehensive rebuild on the quattro a few years ago, now.
Starting with a full set of struts which i'd purchased earlier, I slowly collected all the parts over time, and then built the whole lot up, to swap in one go.

A plan that almost worked. I was going to use some offset subframe mounts at the front, with the new subframe, but ran into some small technical issues (not helped by some really poor advice from a so-called quattro expert)

The result is the rear subframe is on alloy mounts, the front on poly. The wishbones all on poly. I used Koni dampers, but had no issues with the OEM dampers which i'd used about 10 years earlier, save they were due for a replacement.

I just replaced all the joints and arms in one go. The one thing I forgot was to check the steering rack gaiter. It was split, and gave up the ghost a short while later.

Track arms were fully dismantled, packed with grease, before assembly. Something i've done many times, and avoids the pain of seized arms later when you want an alignment.

parts list-
Ball joints
bushes
mounts
track arms
damper dust shrouds
(4V6-Industries) disc brake shields (time required for getting rotten bolts out from the struts)

Worth overhauling the brakes at the same time.
Hoses, calliper piston dust seals, calliper pin dust shields. Attention to any brake hardline while in there, and access is improved.

Diff mounts?

What did you think of the Konis?

The Rolls Royce of shocks in many ways!

Worth the extra money?

13-08-18, 12:30 PM	#3
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	ARB bushes are the only ones missing. Be careful with the track rod ends when you release them from the struts or you'll damage the rubber boots and need to replace. Now's a good time as it will need aligned anyway If you want to go even further, subframe bushes and gearbox / diff mounts __________________ 1991 90 quattro 20v sport 1991 90 quattro

13-08-18, 12:49 PM	#4
Hanuman Trickster Classic Audi Club Member Join Date: May 2009 Location: Heckling from the cheap seats, Phnom Penh, KoW Posts: 7,006	I did a comprehensive rebuild on the quattro a few years ago, now. Starting with a full set of struts which i'd purchased earlier, I slowly collected all the parts over time, and then built the whole lot up, to swap in one go. A plan that almost worked. I was going to use some offset subframe mounts at the front, with the new subframe, but ran into some small technical issues (not helped by some really poor advice from a so-called quattro expert) The result is the rear subframe is on alloy mounts, the front on poly. The wishbones all on poly. I used Koni dampers, but had no issues with the OEM dampers which i'd used about 10 years earlier, save they were due for a replacement. I just replaced all the joints and arms in one go. The one thing I forgot was to check the steering rack gaiter. It was split, and gave up the ghost a short while later. Track arms were fully dismantled, packed with grease, before assembly. Something i've done many times, and avoids the pain of seized arms later when you want an alignment. parts list- Ball joints bushes mounts track arms damper dust shrouds (4V6-Industries) disc brake shields (time required for getting rotten bolts out from the struts) Worth overhauling the brakes at the same time. Hoses, calliper piston dust seals, calliper pin dust shields. Attention to any brake hardline while in there, and access is improved. Diff mounts? __________________ I wish they would keep the damned Chinese away now that I can go home, so that I can enjoy Fish amok and a draught Angkor

13-08-18, 06:32 PM	#5
andya Senior Member Classic Audi Club Member Join Date: Aug 2010 Location: Hampshire Posts: 1,149	Wow thanks for the input guys - ARB bushes is the glaring one I forgot, so thanks. Droopsnoot - I can source most of my parts from Pete Reeve at Quattro Corner. The poly bushes are readily available from sellers on eBay - failing that again Quattro Corner or you can try AM Cars at Ilminister. I've opted for koni shocks for the rears. Haven't yet purchased fronts, I'm edging towards a pair of Bilsteins as I hear they are much harder than the konis and oem boge shocks. Happy to get some feedback on that Droopsnoot - you've also got a cq haven't you? Regards Andy __________________ 1985 Coupe Quattro 1986 Coupe 1.8 weber carb 1987 Coupe 2.2 GT

13-08-18, 12:11 PM	#2
droopsnoot Grown up member Join Date: Jun 2015 Location: South Cheshire Posts: 212	I'm interested in this, as I will need to do similar to mine once I've welded it back together. Are the parts generally quite easy to find, or have you had trouble sourcing some things? So far I know that I've got to change some of the mounts on the rear subframe, and I'm a bit annoyed that it seems that I've got to put poly on it, as I'd rather use normal rubber ones. I haven't spent much time looking, though. I've got to do springs - I swapped the fronts ages ago, and I'm sure they were too long for the car, and combined with the rears being original, it's given the car quite a nose-up look. It would make sense to do some wheel bearings and stuff while it's all in pieces, but as I'm not really sure what I want to do with the car once it's finished, it's difficult to decide which way to go with it.

13-08-18, 06:47 PM	#6
droopsnoot Grown up member Join Date: Jun 2015 Location: South Cheshire Posts: 212	Yes, I've got a cq that I used to run as a daily driver from 72k to 273k, then took it off the road for various reasons. I started a rebuild thread on it as I've started welding the back end together: http://www.classic-audi.co.uk/forum/...ad.php?t=38341 Cheers for the pointers on parts suppliers. I carry a list of Vauxhall bits around with me when I go to autojumbles, and it's about time I started carrying the same for the cq.