Cooked brakes, how do I sort it out?

[_Nathan_]

Long pedal does suggest boiled fluid.

[the bruce]

pedal to the bottom > boiling fluid

just ''long pedal'' > fading ( = overheated pads)


 

[_Nathan_]

Are you talking about the build up of gas between pad and disk being compressed or something else?

In my experience pad fade had resulted in a solid pedal but massively reduced retardation but admittedly I've not used a car on track with plain faced disks for many years. 

[heavyd]

Oh well, I changed the brake fluid and took the face off the brake pads. The brakes are much better than they were this morning, but still arent as good as what they were before, so looks like I might have to invest in some ferodo pads
Thanks for advice people, much appreciated

[Andy]

glad your car is sorted now Dom,well the map any way, now to do the brakes,this modding cars never stops

[the bruce]

NEW AT AUDI:

Since 3/2011 the Audi TT-RS comes with a new ventilation element
fitted to the lower arms.
Furthermore there are changed dust covers (which I would remove).

The parts numbers:

Luftführung 8P0 863 149 A and 150A   13,25€  vent
Deckblech 8J0 615 311 E and 312E   23,15€  dust cover
Schraube 2x N104 222 03  bolt
Mutter 2x N 907 611 02  nut
Hülse 2x 8J0 864 133 A  ??

[bacillus]

Servo vacuum leak??

[Andy]

When.I.changed my brakes to the r32 ones right round my brakes were crap until I bedded them in and they are very sharp

[tony_danza]

Are they bedded?

Did you bleed the system with VAGCOM, so it does all the ABS etc too??

[Janner_Sy]

maybe theres something else amiss, could be servo i guess?

If you haven't fully bled the system fully id bet that could be the issue.  you also have an additonal bleed nipple on the clutch iirc as they share the same resovoir.  Id get a pro garage to bleed it correctly, as you might well have replaced alot of parts for no reason.

[Top Cat]

I cooked mine at Oulton, staying out too long and not enough time in between, resulting in expensive pads ruined and discs needing  skimming. Inspect your discs, look for contamination, if you have some pad material on the disc, i would say they need a light skim, sanding wont be enough, also you might need even more pads as some of the contamination might have got onto your new pads.

Never heard of cooked brakes whilst logging  . I thought you only needed to tick off what blocks you want to log  the do one run through third to fourth.

[heavyd]

I honestly can't see it being air in the system, as system hasn't been opened, so no way air could have entered the system, the pedal isn't spongey, just lack off braking force. I just bought new set of disks, and took the top off the pads, so no contamination there. Discs were purple when they came back after datalogging and absolutely stunk

[martziniuk]

Sounds like this remap is getting expensive 

[muckipup]

Did you bleed the system with VAGCOM, so it does all the ABS etc too??

Quick question and hopefully not too off-topic but is recycling of the ABS pump with VCDS really necessary? I heard one story about old brake fluid hiding in there but another from a techie I think saying that it was nonsense as the ABS pump was in an 'open' state when inactive such that when pushing new fluid through the system it also pushes through the pump. Can someone clear this up?

[Hedge]

Deep down you know the answer though.  

http://www.mk5golfgti.co.uk/forum/index.php/topic,31194.0/topicseen.html