Classic Audi » Technical » Mech/Tech » Suspension & Brakes » Coupe quattro uprated brake recommendations

Reply
 
Thread Tools Display Modes
Old 18-10-16, 03:17 PM   #1
20vcqdriver
4 ring whore!
Classic Audi Club Member
 
20vcqdriver's Avatar
 
Join Date: Dec 2007
Location: Wirral
Posts: 3,910
Default Coupe quattro uprated brake recommendations

Had good fun Saturday although only doing the parade laps caused me concern as after following not far behind the red R8 and able to do plenty of heavy braking before corners I realised despite Black diamond grooved 280mm discs and pads up front and 256mm at the rear, (both with standard calipers) I was starting to get brake fade. I am therefore looking for anyone who may of further uprated the braking on these series 2's bearing in mind I am sticking with the 15" Ronals for originality.
Have found this site but had no experience of them. All feedback appreciated.

http://www.bigbrakes4u.co.uk/k-sport...prod_2055.html
__________________

Coupe quattro 1986:-~450bhp + loooong list of mods!
Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque!
Audi S4 4.2 V8 cabriolet 2004:-
20vcqdriver is offline   Reply With Quote
Old 18-10-16, 03:37 PM   #2
quattromnc
Grown up member
 
quattromnc's Avatar
 
Join Date: Mar 2011
Location: Newton Mearns, Glasgow
Posts: 177
Default

Quote:
Originally Posted by 20vcqdriver View Post
Had good fun Saturday although only doing the parade laps caused me concern as after following not far behind the red R8 and able to do plenty of heavy braking before corners I realised despite Black diamond grooved 280mm discs and pads up front and 256mm at the rear, (both with standard calipers) I was starting to get brake fade. I am therefore looking for anyone who may of further uprated the braking on these series 2's bearing in mind I am sticking with the 15" Ronals for originality.
Have found this site but had no experience of them. All feedback appreciated.

http://www.bigbrakes4u.co.uk/k-sport...prod_2055.html
Hey,

I've just put Brembo OE discs (euro car parts stock them) and EBC yellow Stuff pads on our 2.0 B4 Coupe, it has G54 single pot calipers with 280mm disc, and I am yet to fade these. You may point out an engine difference here but trust me if I'm not fading these brakes you'll struggle. There are a few here that may vouch for this
quattromnc is offline   Reply With Quote
Old 18-10-16, 04:10 PM   #3
Hanuman
Trickster
Classic Audi Club Member
 
Hanuman's Avatar
 
Join Date: May 2009
Location: Heckling from the cheap seats, Phnom Penh, KoW
Posts: 7,006
Default

I once ran Black Diamond 280mm (standard size) grooved with red stuff on the Ur giving it a bit of effort on Knockhill, after previously getting fade with standard discs and pads on G54 calipers.
It took quite a while to start suffering fade with the BD discs.

With G60 calipers, and standard discs but Green pads, the overall feel was much better. 276mm x25mm disc. No noticeable fade after several decent runs.

Now on Brembos (Boxter), with 288mm x 25mm A100 discs, it's pretty good, but hasn't been tried hard. Currently using standard Pagid discs and pads after having a bad set of Black Diamonds!

Apikol do/did a brake calliper bracket in machined cast iron, but my calipers are mounted on Ally brackets from Bambridge.

I think, but I'm not certain, that there are discs of the right size for 4 stud hubs.
On the rear, if you can find a suitable disc, the 'vented' calliper & bracket of the V8/S6/20vUR may fit, but would it give you much extra without a bias pedal box?
__________________
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
Hanuman is offline   Reply With Quote
Old 18-10-16, 04:25 PM   #4
4v6
Ex Member
Classic Audi Club Member
 
Join Date: Dec 2007
Posts: 5,565
Default

Probably the easiest way to improve braking is to simply move the calipers outwards via the use of a suitably made bracket, TSR used to supply a kit to do this on the golfs which allowed 285mm BD discs up front on a 15mm wheel,
4v6 is offline   Reply With Quote
Old 18-10-16, 06:49 PM   #5
Andy10v
Grown up member
Classic Audi Club Member
 
Andy10v's Avatar
 
Join Date: Dec 2008
Location: Stirling
Posts: 861
Default

First upgrade would be a set of track orientated pads (Black Diamond performance pads are a "fast road" pad iirc), DS3000, Carbone Lorraine RC6, Carbotech XP10 (or 12 due to weight), Pagid RS29, EBC yellow. The next thing is normally boiling the fluid so you may then need more heat capacity or cooling.

Do the K sports have dust seals? You want dust seals on a road car.

I would be tempted to get a set of Porsche Brembo calipers like the UR guys do as they are designed for road use if you want to change the calipers. Track calipers if its just for track use.

RS2 has brake cooling scoops on the wishbone, you could also fit ducted backing plates.

Most road car setups will not last long under hard track use, tyres will overheat quickly as well if you can stay out longer, its an expensive slippery slope!
__________________
2005 350z GT

Sold-1992 3B S2 coupe-RS2+, 996s, konis, forged rods, rear torsen....
Sold-1993 ABY coupe
Andy10v is offline   Reply With Quote
Old 19-10-16, 10:47 AM   #6
Hoyle
80q addict
Classic Audi Club Member
 
Hoyle's Avatar
 
Join Date: Nov 2010
Location: North Wales
Posts: 840
Default

I've always used ferodo ds2500 pads, ds3k might be better for track use! But also has anyone mentioned brake fluid?

I've used Motul RBF600 for years, brilliant stuff. As well as that, some diy brake ducting will make a noticable difference!
__________________

My 80 Quattro thread
Hoyle is offline   Reply With Quote
Old 17-11-16, 05:34 PM   #7
vorsprung durch technik
4 ring whore!
Classic Audi Club Member
 
vorsprung durch technik's Avatar
 
Join Date: Feb 2014
Location: Near Watford.
Posts: 7,753
Default

Quote:
Originally Posted by Andy10v View Post
I would be tempted to get a set of Porsche Brembo calipers like the UR guys do as they are designed for road use if you want to change the calipers.
Andy's spot on again. Here's a pic of what you want and what it looks like. Where's my cheap oil?

vorsprung durch technik is offline   Reply With Quote
Old 22-12-16, 08:54 PM   #8
Gaz
Senior Member
 
Gaz's Avatar
 
Join Date: Jul 2007
Location: Five Cylinder heaven
Posts: 1,493
Default

Are you 4 or 5 stud?

might be interested in your setup.. how do/did you get 280 mm front and 256 rear?

standard cq are 256mm front aren't they?

Last edited by Gaz; 22-12-16 at 08:57 PM.
Gaz is offline   Reply With Quote
Old 23-12-16, 07:59 AM   #9
20vcqdriver
4 ring whore!
Classic Audi Club Member
 
20vcqdriver's Avatar
 
Join Date: Dec 2007
Location: Wirral
Posts: 3,910
Default

Quote:
Originally Posted by Gaz View Post
Are you 4 or 5 stud?

might be interested in your setup.. how do/did you get 280 mm front and 256 rear?

standard cq are 256mm front aren't they?
I did articles on the setup in VW/Audi driver way back in 1998. Send an email address and I'll forward all the info .
Its much better than oe but compared to modern brakes they lag behind a lot , hence some uprated calipers to up the performance should be all I need. After all it only weighs around 1300kg
__________________

Coupe quattro 1986:-~450bhp + loooong list of mods!
Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque!
Audi S4 4.2 V8 cabriolet 2004:-
20vcqdriver is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT. The time now is 12:11 AM.

Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2007-2008 Classic Audi | Site by Roadrunna