BREMBO BRAKES

[bobbler]

On the disc - approx 75mm
Direct across the pad (from the "hole" to the edge in a straight line) - 65mm

[S4]

so the only disc to use with the cayenne, is the expensive type... RS4 turned down, or the ECS.... I don't think the ECS wear that well, I have read some other stuff...... thats handy for them If you have to purchase there disc, I bet they are quite pricey too.... so its just the choice out of the 2. Thought there would be more options.

Darren

[MarkB]

On the disc - approx 75mm
Direct across the pad (from the "hole" to the edge in a straight line) - 65mm

Good info. Thanks

[jimbo1234567]

just got back from a few days away to find a big sleel wheelbarrow has fallen onto the front of my already shagged car thus making it more shagged to the tune of a wing bonnet and bumper which will all need a respray , i could have cried. anyway heres a photo of the disc as promised and a couple of the pads both are pagid the knackered being black and the other being a yellow. the yellow one seems to have been modified with a grinder and only has 2 sticky up cylinder type bits whereas the black pads have 4 each. all im after is some decent pads for day to day use giving a good bite from cold but not fading away. oh and just to add to my misery when changing the link pipes round one of the fittings doesnt seal any more so the calipers off to the machine shop tomorrow if i dont chuck it in the bin first, im pretty fecked off tonite, any advice on pads appreciated.

[s4woody]

the black pads in the pic are like what i had fitted in my car..i paid £55 for a set IIRC..no squeaking and lasted very well..mite still be in there unless they have been changed by the car's present owner..

[bobbler]

Looks to be same as what I have -

[MarkB]

Looks to be same as what I have -

Have you got a part number?

[bobbler]

Numbers from the rear of that pad -
HB501 HPS
HAWK7266-2-FF
025-1AH01F

Have a look on here too, should be easy enough to find another compatible pad - http://www.livermoreperformance.com/por ... _pads.html

[MarkB]

Cool, and another question... have you got a part number off the calipers?

Numbers from the rear of that pad -
HB501 HPS
HAWK7266-2-FF
025-1AH01F

Have a look on here too, should be easy enough to find another compatible pad - http://www.livermoreperformance.com/por ... _pads.html

[bobbler]

Yeah calipers are 18ZL and 18ZR
Only other number on them appears to be a serial number - 7A2223 and only appears on one of them.

[bobbler]

Also can I ask how we know the calipers are on the wrong way round Corey?
Not being funny but I have the set in front of me and they will configure the same when they are installed with the smaller piston to the top of the caliper (the pipework is bottom, nipples to the top).
I would be very much inclined to think that ECS and a respected Audi tuner like Dialynx would have a little clue on the installation/configuration - certainly better than most of us here.

From my point of view I thought the larger piston is best served up in at the front "edge" of the rotation not the trailing edge?

This is how I imagine it (excuse my basic paintshop skills) and appears to be how Jimbos are and mine will end up when installed.

[Corey]

Also can I ask how we know the calipers are on the wrong way round Corey?
Not being funny but I have the set in front of me and they will configure the same when they are installed with the smaller piston to the top of the caliper (the pipework is bottom, nipples to the top).
I would be very much inclined to think that ECS and a respected Audi tuner like Dialynx would have a little clue on the installation/configuration - certainly better than most of us here.

Brake caliper 101
The reason the pistons are different sizes is due to the force they exert on the pad, the larger the piston the more force applied to the back of the pad.
So if the larger piston is on the lead then it will apply more force to the pad causing the uneven wear you are experiencing.
The small piston MUST be on the lead (same applies to trailing calipers as it does to leading calipers, ((lead means before the axle, trailing after the axle btw)) ok) of the disc so that the force is the same when the pedal is pressed.
Nothing funny about brake upgrades, something which my company has been doing for about the last 15 years so I hope I may know a little about Audi/Porsche brake setups but always willing to learn something new though, if the brakes don't work it isn't very funny!!!
I tend to believe Porsche though rather than some aftermarket tuners. Images show are untouched Porsche GT3 6 pot caliper (trailing type caliper)


and as you can see the small piston is on the lead (Porsche like Audi assigns part numbers based on the side of the chassis and 996.351.431.00 shows itself as a front near side caliper.
Ok?

The calipers you have infront of you have not been configured at all, they are how they were removed from the vehicle they originally came from, their original fitment is a leading caliper, THEY NEED TO BE MODIFIED TO BE USED ON A TRAILING FITMENT.
Do what you like its your car and family on board it but I hope you never travel behind anybody I know. Please take the advice as it was given.

[bobbler]

Alright calm down. No need to get all arsey about it! And certainly no need to wish ill on peoples families is there.
Gods sake people on the internet are a funny bunch of gits over simple questions. "Oh no don't you dare question me RAAAAAAR!!!!"

I was SIMPLY ASKING THE QUESTION BECAUSE I WOULD LIKE TO KNOW WHY YOU THINK THEY ARE UPSIDE DOWN? Why you think a respected Audi tuner would put them on upside down. Why you think ECS would send out probably thousands of these caliper sets upside down. Why you think that everyone who has installed ECS stage IVs (near enough the same caliper as above) has never mentioned they needed to switch it around.

It really goes against what every one else is saying. Thats why I asked.

I was not questioning your motives or your work location or trying to invoke an argument. Seems I got a whole crapload of those things though eh?

Incidentally they are not removed from a vehicle they are brand new as purchased from ECS.

[bobbler]

Response from ECS - (Asked them do I need to make any changes to the caliper or is it already correct with the lead piston being the biggest one)

Thank you for your inquiry. There are some changes that need to be made to the calipers however we take care of all of that before shipping the kits out. As you receive them is exactly how they go onto your car.

Dont get me wrong, I just want the best from these brakes, they make up a quarter of the cost of the car!

[Harper--D]

It could just be that jimvos slipped through untouched and wernt checked by dialinx before fitting? Just another possibilty.