Fabio421

Rixter, would you like to share with the class, how you know this?

<--- These are Capuccino.

marton

It has a higher boiling point than 4; I switched to it last year.

Marton

UKKid35

You don't say...

UKKid35

Approximate costs as follows:

Fuel London - Nurburgring return, plus laps - $800
Ferry - $70
Hotel two nights - $400
8 Lap ticket - $200
Dinners - $100
Photos from FrozenSpeed - $100

I had hoped to share some of these costs with my passenger/navigator, but unfortunately two different people cancelled, the second only 24hrs before the trip.

dr bob

And we gripe about the costs of fuel here... That's barely nine tanks here, 3000 miles worth or more.


Keeping the whole costs in perspective: nice drive over to the continent, a bit of touring and nightlife, a few ripping laps of the 'ring, all for less than $2k.


I still think you coul have paid for the 'good' fluid and never noticed the cost.

Charles Parkinson

Change to ATE super blue/gold as someone previosuly mentioned and bleed it regularly. If you are at the 'ring for more than one day, bleed it at the end of each day and you won't have problems - assuming all your brake system components are in good order.
I would suggest that moving up to Pagid RS14s (Black) for the 'ring in a 928. I use them for track days and they are truly amazing. Downside is they squeal and eat rotors. Cheers, Charles in OZ.

SeanR

Pagid blacks are great when they are warm, but damn.........cold.........squeeks, and new rotors frequently.

Track wise they are great when you can keep them warm. Semi track use, I'd go with Hawks.

JET951

Hi Paul , I do not know if you chose the correct Pagids for the job ? .(track etc) , the Pagids we use for track are orange or Blue on the fronts and Blue on the rears which are a bit different to the one's shown in your photo , the Pagid blue's we are used to do not have the words "Pagid Fast Road Car Disc Brake Pads" on the box lid.
So in other words the Pagids you have, are they the OEM road versions?
The Pagid Blue have the words Race Disc Brake Pads on the lid of the box, and under the word Pagid there is a large RS symbol in silver (same with the orange and black Pagids)
So I would suggest for next time do the following
A) Pagid Blue front and rear (don't forget the rears)
B) braided brake lines
C) Castrol SRF (synthetic Racing Fluid )
Regards .BB.

Charles Parkinson

Hi Guys, Not suggesting Paul use Pagid RS14 (Black) for general road use as they are not suitable and may be illegal - box says "race use only". But for multiple laps of the 'ring you need all the stopping power you can get and RS14s are hard to beat for that Cheers, Charles

UKKid35

OK, so following your advice I flushed and filled with a new container of ATE SuperBlue. And as soon as I got the the Alps and tried a long downhill twisty road (the Umbrail Pass) the brakes faded.

I stopped and checked the discs, not red, but certainly hot. However the brake fluid had boiled over and was dripping from somewhere around the resevoir. Perhaps it was slightly over the max line to start with, but even so I was suprised to find a small puddle of blue fluid under the car.

As for the pads, I was quite pleased with them, they became more and more squeally as they approached the point where the brakes faded. This was very useful and enabled me to keep pushing the car until the audible warning, and then I would back off and let them cool down.

I am not going to fit anything more radical, I need the car to stop when the brakes are cold, in fact that's probably much more important. An emergency stop on an urban road when a child runs out is always going to be my priority. However I'm disappointed by their performance on the Alpine roads which I enjoyed so much.

mark kibort

pads might not have been bedded. even over their life, if you dont "race " cook them, you dont get all the resins out of them. pagid orange are great street and track pads.
fluid wouldnt be fade, but soft pedal

mk

UKKid35

Sorry, my mistake, I should have said that the pedal became progressively softer, and required much more effort to slow the car, as the brakes completely lost their bite.

UKKid35

Thanks BB - I do have braided lines, and I think I will try Castrol SRF next time I flush.

pcar928fan

Someone mentioned the direction of the vanes in the discs... I thought they needed to curve FORWARD not backwards, but regardless you have something going on there. Maybe you are just the KING of braking!

I have run my race car and my S4 on track with stock S4 brakes and Pagid Orange and NEVER had a fade problem... Are you riding your brakes? Do you have a brake piston (maybe on the inside of the front brakes) that is stuck and thus causing enough drag that you don't notice it but enough to overheat the fluid? Do you have something else rubbing? Are your air ducts clear of obstructions and pointing at the rotor as they should be?

It is VERY rare to have S4 brakes let you down anywhere but on a track under the most stringent of driving tasks. They can even be a little light for BIG TIME pro level track work, but anything this side of that (ie. club racing, DE's, street, etc) they should be MORE THAN ENOUGH!

Good luck and keep us posted!

Charley B

Logic would seem to say the rotor's cooling vents should face forward to "catch" the air flow, but the air actually enters near the center and flows through and out the top of the rotor. With the vent's curving rearward it helps draw the air through the rotor.

Switched front rotors is a surprisingly common occurance, and problems usually show up only under hard braking conditions.