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  1. #1
    JD09's Avatar
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    Brembo brakes on eBay - any reason why not?

    The phrases "too good to be true" and "buy cheap, buy twice" spring to mind, but any reason why I shouldn't buy these?

    VW/AUDI/SEAT/SKODA 323mm MK4 GOLF TT S3 BREMBO CALIPERS on eBay (end time 14-Jan-11 20:29:00 GMT)

    He has several kits, I would probably go red or black...?

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  3. #2
    LiveWire's Avatar
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    Yeah dont buy them, I want to :o)
    52 plate S3 / Ming Blue / 60K / Celtic Tuning Re-Map, Allegedly 278 Bhp-256 lb/ft (not proven/no chance)

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    Dane's Avatar
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    Hmm seems pretty cheap for a brand new kit.

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    JD09's Avatar
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    My thoughts Dane. Lol LiveWire. There are a few sets, otherwise I would have Facebooked Welly or Tuffty lol!

  6. #5
    S3 Paul's Avatar
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    They dont to me look like a "kit" from brembo as the calipers in the GT jnr kit are Lug mount and these are Radial mount... or the other way round,
    But you get my point? They are probably from an Evo or Alfa or something like. That said they can work IF the kit has been designed / made correctly.
    Personaly i would want to know what car the calipers are from as it may become a pain at a later date to get hold of new pads
    Noggy Blue 2001 S3

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    JD09's Avatar
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    Hmmm interesting point Dave.

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    jack.s's Avatar
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    I thought it looked to good to be true, would be awsome if it is genuine.

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  9. #8
    JD09's Avatar
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    My thoughts Jack, but alarm bells rang so AS.net it was! Still wonder whether it is that bad a deal... need to see what sort of pad coverage they have. No point going for less pad area with 4 pots than I already have with the standard brakes...

  10. #9
    colicabcadam
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    4 pot calipers over the standard 1 pot? regardless of contact area, it'll be miles better

    those discs cost 200 on ebay with pads, so you are getting the bracket and calipers for 300, do the maths, as for "what pads do they take it might be a problem" have a think about what you said, it;s a brembo caliper, not some cheap thing from china lol, you'll find pads easily

    i'm due a brake disk change, so i may even grab these myself....

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    JD09's Avatar
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    Are you the seller

    I know how hard it was for another member (DJ Troopa?) on here to get pads after buying a set of Alfa calipers, but think Bill sorted him.

    The issue now is the seller has come back with "they are Porsche calipers", which beggers the question (by memory) that there are some that are ****e and not worth the Brembo sticker they wear...

  12. #11
    Dane's Avatar
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    ask whether they are front or rear calipers.

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    JD09's Avatar
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    Way ahead of you my friend Just been reading up in the thread that Joe made a while back about the sizes of the calipers and it's not quite right...

    Seems an OK seller though so hopefully can get the info out of him and report back (after buying a set if it's good news, before you lot get your hands on them!).

  14. #13
    colicabcadam
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    you should think less........

    sorry i grabbed them lol, i needed new discs, so was going to spend 200+ anyways, so 300 for the calipers, brackets and bolts seemed reasonable, and it it's a fit like they say, it should be well worth the money

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    JD09's Avatar
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    Ha, wondered where they went.

    No, I don't rush. Would rather loose out on calipers than loose out on my legs

    I think the seller could well be DaveB (quoted in the brake thread stickied above as the supplier of bolt on parts). I want 312, not 323 as the disks are triple the price and 312s are still available.

    Although please let me know how you get on!!!

  16. #15
    jojo's Avatar
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    I'm curious what calipers they are, they are definitely not Brembo GT/LCR calipers, infact, they look similar, but smaller, so definitely need to do some research if buying.


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    finesse's Avatar
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    interesting!

    lol @ jd , still looking for brakes

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    i was going to get this set up 2 but ill see what he say's about the calipers first
    350bhp & 316ftlb BBT new k16 7+7 blade hybrid turbo, Welly cooler, jetex filter, relentless ported v3 manifold 3" downpipe & de-cat, liquid gauge, r32 rear arb, AGU ported and polished Head, 550cc injectors, kw v2 Coilovers, s3dave tie bars & heat sheild, milltek cat back, I.E forged rods, brembos, inline fuel pump, v3 badger 5 tip, devils own WMI kit, AGU pistons, rear grooved discs & brembo pads, ds2500 pads & EBC ultimax disc, stack boost gauge

  19. #18
    JD09's Avatar
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    Quote Originally Posted by jojo View Post
    I'm curious what calipers they are, they are definitely not Brembo GT/LCR calipers, infact, they look similar, but smaller, so definitely need to do some research if buying.
    Exactly my thoughts Joe, after consulting your thread in depth!

    Quote Originally Posted by finesse View Post
    interesting!

    lol @ jd , still looking for brakes
    I know mate, but they're not knackered yet, so life in the OEM stuff. Just careful of my speed and braking distances. Suspension has been finished today, so on to the next one!

    Quote Originally Posted by s3gazz View Post
    i was going to get this set up 2 but ill see what he say's about the calipers first
    I'll report back Gaz fella.

  20. #19
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    i was also looking at these haha,,

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    Mpathe's Avatar
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    I was also looking at these but gave it a miss as I thought they will be rear porsche calipers for that price and have some wilwood 4 pots now instead.
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    future's Avatar
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    they are radial mount by the looks of it, but im pretty sure they are 964 rear calipers. Dont know how these work with s3 set up but would guess the pistons are too small (32/34 or 28/32 iirc)

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    JD09's Avatar
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    The rear pads are listed on a range of front and rear porsche set ups but not the 996. 928 rears,944 front and rears,968 front and rears,911 front and rears,911(964)front and rears,911(993) rears, the pads are 97mm long and approx 50mm high pad track.

    From the seller. So that's a no then?

  24. #23
    colicabcadam
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    they are 964 rear calipers, which will be far better than the crap single piston standard brakes, they are branded porsche, but, brembo make them.

    when i found out the front brakes on an s3 were only a 1 piston setup i was shocked, i reckon my ducati has more stopping power from one caliper when compared against the 2 fronts from the s3!

    the calipers sell on their own for 175 on ebay, so a good buy if you ask me! i'll prob get them fitted mid jan, so i'll report back then!

  25. #24
    Mpathe's Avatar
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    can tell you haven't read the brake thread!

    the porsche rear calipers have four small pistons and so have less surface area than the large single pot caliper which makes the s3 caliper miles better than the rear 4 pot caliper
    09 white black edition a3 2.0 tdi 😃
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  26. #25
    S3 Paul's Avatar
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    With regards "you should think less "... These are brakes !
    If any one area doesnt need a rash choice. this is it,
    Im sure Tuffty told "animal" ( sorry forgot ya sunday name ) to stay away from rear porsche calliper set up on to the front of S3
    I uprated the front brakes on my Supercharged VR6 golf to those from an S3 and it stopped very well. So what you have is more than upto the job of a daily drive. For big power or "balls out " drivers you may want to look at an upgrade.
    My car had Brembos when i got it But even with the DS2500 pads Uprated discs and ATE super racing blue fluid i can still worry about fade after a few laps.
    For the money i dont think its bad. IF like i said you can get parts off the shelf AND they have been designed to mount correctly.
    Noggy Blue 2001 S3

    I ask questions because i change my mind so much. If i ask questions you have already covered... just leave it be?

  27. #26
    colicabcadam
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    Quote Originally Posted by Mpathe View Post
    can tell you haven't read the brake thread!

    the porsche rear calipers have four small pistons and so have less surface area than the large single pot caliper which makes the s3 caliper miles better than the rear 4 pot caliper
    the porsche caliper has (30mm x 2) + (28mm x 2) = 2642mm and the audi has 1 x 54mm = 2290mm surface area, plus the porsche setup sits on a larger disc which means they automatically have more stopping power due to the laws of leverage

  28. #27
    Mpathe's Avatar
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    nope you count 1 side/half the amount of pistons for a fixed caliper and x2 for a sliding caliper so your equations are wrong straight away
    09 white black edition a3 2.0 tdi 😃
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  29. #28
    Mpathe's Avatar
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    taken from the brake thread

    Standard A3 caliper has a single 54mm piston. This has an area of 22.89cm^2 or 3.55 square inch. Applying our simple physics, 3000psi x 3.55 sq inch = 10650lbs of clamping force.
    A Porsche rear caliper has a pair of opposed pistons, one 28mm and one 30mm. These have an area of 6.15cm^2 and 7.1cm^2 respectively, giving a combined area of 2.05 square inch. As above, 3000psi x 2.05 = 6150lbs
    09 white black edition a3 2.0 tdi 😃
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  30. #29
    colicabcadam
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    Quote Originally Posted by Mpathe View Post
    nope you count 1 side/half the amount of pistons for a fixed caliper and x2 for a sliding caliper so your equations are wrong straight away
    so if that is correct, why on earth does my ducati stop 10x quicker than a bike with a large single pot caliper?

    all of this is theory, if its crap, i'll admit it, but i can not see how the setup i bought would be worse than the standard!!!

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    Mpathe's Avatar
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    because that will have bigger caliper designed for the front of the bike. where as fitting a rear caliper suited for rear braking "which has smaller pistons so not to lock the rear wheels all he time" to the front would make the brakes worse
    09 white black edition a3 2.0 tdi 😃
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  32. #31
    JD09's Avatar
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    I swear tuffty/bill/another knowledge bank said to stay clear of 964 rears...

  33. #32
    Mpathe's Avatar
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    Quote Originally Posted by JD09 View Post
    I swear tuffty/bill/another knowledge bank said to stay clear of 964 rears...
    I'm sure they did aswel that's what reminded me of the brake thread
    09 white black edition a3 2.0 tdi 😃
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  34. #33
    colicabcadam
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    Quote Originally Posted by JD09 View Post
    I swear tuffty/bill/another knowledge bank said to stay clear of 964 rears...
    I read the thread, they were talking about the 2 pot version (Porsche released a new 4 pot rear caliper on later models )

  35. #34
    "Stick a V8 in it!"

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    It doesnt really matter how many pistons it has, and the maths i did in that thread were based on a 996 rear caliper, which is a 4pot.

    The area of the pistons on a porsche rear caliper is much smaller, just like it is on an A3.

    Theres actually very little difference in clamping force between a properly specced 4 pot caliper, and the original front caliper. This is because you need to match the piston area to the master cylinder, so suitable calipers can only come from a narrow range.

    Fitting rear calipers to the front will give you a wooden pedal, and much less braking for a given leg input.

    The only real advantages from using a 4 pot caliper along with a standard 312mm disk, is that its more rigid, which helps make the braking a bit less spongy, and may have better pad selection. Its not going to stop the car any quicker.

    If you want to improve the braking, you need to fit a larger disk, but even then, you wont actually be able to stop any faster, because the braking is limited by the tyres adhesion to the road surface. The only thing you will gain is more thermal mass, ie it will keep working for longer before it overheats when driven hard.

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  36. #35
    Prawn's Avatar
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    Quote Originally Posted by colicabcadam View Post
    I read the thread, they were talking about the 2 pot version (Porsche released a new 4 pot rear caliper on later models )
    I'm afraid that's incorrect matey. The calipers discussed in the other thread were 996 rears, which are also 4 pot.

    In buying these calipers. you could have let yourself in for some bad luck. none of the porsche rear calipers have large enough pistons to work properly on the front of an S3.

    As said above, when comparing single pot calipers to 4 pot calipers, you only take one side of the 4 pot into the equation. as in a single pot caliper with a fixed opposing pad, the opposite pad applies an equal and opposite force.

    So, your 964 rears have roughly HALF the hydraulic stopping power of your standard 312's.

    The reason your ducatti brakes are so good, is that the pistons are matched to the master cylinder.

    The reason rear calipers cannot be used on the S3, is that the master cylinder remains unchanged, so you need to match or better the piston area to retain good braking.

    In theory, the rear calipers could be made to work well using a TINY master cylinder, but that would require a redesign of the rear calipers we well.

    If something looks too good to be true, it usually is.

    I contacted this same guy about a set of these recently too, and he was unable to tell me what the calipers came from. SO they were instantly dismissed.
    Last edited by Prawn; 21st December 2010 at 11:28. Reason: Edited for early morning grumpyness
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  37. #36
    JD09's Avatar
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    Thanks for the replies, but can we keep it to a discussion lads, rather than throwing around words?

    Prawn, you were one of the knowledge banks I was looking for :D

    I presume due to the pad diameters posted above, these work out actually smaller than my current 312 S3 setup? And therefore aren't worth it, from what you've said above? Was in at Awesome GTI today, picking the car up and had a good wee chat about other options (Tarox). But from what the lad was saying, 6 pots/4 pots might be over kill!

  38. #37
    s3dave's Avatar
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    I think djtrooper on here had these? and the pad situation was a nightmare for him,

  39. #38
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    JD - sorry, forgotten your first name

    I have a conversion which uses evo calipers, some custom brackets and R32 discs. The brackets are around 90 and then you'll need to source your caliprs (look on flea bay for bargains) and discs. The only other thing you'll need issome hoses which convert the audi line to the mitsi banjo bolt
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  40. #39
    JD09's Avatar
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    Jamie, don't worry

    Cheers fella, might have to PM you after the festive period about your setup

  41. #40
    Prawn's Avatar
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    I wouldn't say 4 pots are overkill at all Jamie.

    Even with uprated discs and pads, the 312's will quickly fade and fail under hard use.

    The increased stopping power with 4 pots is just amazing, and really gives you so much more confidence. Driving other cars feels unsafe to me now!

    I'm currently on the look out for a standard set of LCR 323mm brembos, so I can put my porsche 996 brakes on the track car.
    I had previously said I'd go back to 312's on the road car, but having had the porshce's on for 6 months, I don't think I'd feel safe going back now.
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