1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Prawn and BigAls A3 Track Car

Discussion in 'A3/S3 Forum (8L Chassis)' started by Prawn, Dec 29, 2010.

  1. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    I can answer that one with a picture I think :)

    [​IMG]

    [​IMG]

    [​IMG]

    Forge 330x32mm, 2 piece, curved vane discs, and 6 pot Forge alloy calipers, and some orange hoses thrown in for good measure!

    I weighed up my options after donington, and this just made sense. I'd spend a fortune on upgrading my LCR brakes to 2 piece, and this way I get a bigger caliper and pad area also, and a thicker disc for a similar outlay by the time I've sold my current brakes.

    I need to say a Massive thanks to Jamie at Forge for sorting me out with these, very friendly and helpful whilst we were chatting about requirements and kept in contact whilst I was waiting for them to be made. Given the price of a new set of Brembo Jnr GT's, they're also incredibly well priced given the huge performance potential.

    they're not currently advertised for sale on the forge website for the mk4, but can be made special order, there are a few sets floating around currently on various high powered cars, and now a set will be installed on my humble little A3 also :)

    If anyone is tempted by these I'd advise e-mailing Jamie at forge, i would add his e-mail here, but my hotmail account is on the blink at the mo so I can't find it!

    More to come and some more pictures tomorrow :)
     
  2. Google AdSense Guest Advertisement



    to hide this advert.
  3. s3dave

    s3dave TFSI Hybrid
    Supporter

    Joined:
    Nov 11, 2009
    Messages:
    10,120
    Likes Received:
    734
    Really didnt have you down as a tart..;)
     
  4. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    Me neither Dave, I didn't even ask for them. Just a little extra Jamie did for me as a surprise :)
     
  5. s3dave

    s3dave TFSI Hybrid
    Supporter

    Joined:
    Nov 11, 2009
    Messages:
    10,120
    Likes Received:
    734
    HAha nice, didnt put what i wanted as i know Daddy watches this.....;)
     
  6. Lewis583

    Lewis583 Active Member
    VCDS Map User

    Joined:
    Mar 15, 2010
    Messages:
    950
    Likes Received:
    89
    They look epic Prawn. Really looking forward to some updates bud. :salute:
     
  7. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    7,393
    Likes Received:
    104
    Haha i know, ive been having blonde moments all week matey.
     
  8. MIGGZ

    MIGGZ nanananananananan BATMAN

    Joined:
    May 17, 2012
    Messages:
    1,390
    Likes Received:
    250
    Whoo hooo! 6pots for the win! Those look boss dude!
     
  9. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    Rushed for time, off out to meet mum and dad for a meal, but for now:

    That'll do pig, that'll do....

    [​IMG]

    [​IMG]

    Amazing to fit, perfect fit, no issues or missalignment what so ever, bled up really easily, and pedal feels great.

    Not even had time to test drive it yet, but I've got loads more pics I'll add tomorrow after a trip to Thruxton to watch the BTCC :)
     
  10. Scullies

    Scullies Well-Known Member

    Joined:
    Feb 9, 2012
    Messages:
    1,410
    Likes Received:
    441
    Those look absolutely terrible, you should take them off and let me take them off your hands :laugh:
     
  11. Sam_

    Sam_ Down under

    Joined:
    Mar 8, 2011
    Messages:
    2,939
    Likes Received:
    417
    They look so much better with the instagram filter and border haha
     
    Cozza McA likes this.
  12. jasongtr

    jasongtr Active Member
    VCDS Map User

    Joined:
    May 4, 2013
    Messages:
    428
    Likes Received:
    33
    i have just read the entire thread (over a several days) and its a great thread and you have built a very capable car.

    I thought id start off by saying i had a mk2 golf 1.8t 20v - BAM engine, qpeng management and it had those 2 piece discs you just bought, they are good so you wont have an issues with those.

    Its always funny to read about the FWD/Haldex arguments, and i notice somebody said it would be a good comparison to see an similarly stripped out S3 - thats my plan, its obviously going to be a few years in development behind yours so don't expect too much too soon.

    On that note, i assume any decent looking early S3 is a good base to start from?

    Id hope for Bill at B5 to do some of the future work required, i once visited his place as i was dropping a haldex diff off to one of his customers (i break 4motions) at the time i had my mk2 golf, so we were chatting about it for a while - doubt very much he will remember though.

    i should be sticking around and soaking up the tips for my new toy -
     
  13. moredoor

    moredoor Member

    Joined:
    Aug 22, 2011
    Messages:
    160
    Likes Received:
    0
    Hi mate, those look ready nice, the discs seem to be flat ie offset and in the pics the calipers seem to be sticking out way past the hub face. Is that going to be an issue with rims clearing.
     
  14. Sam_

    Sam_ Down under

    Joined:
    Mar 8, 2011
    Messages:
    2,939
    Likes Received:
    417
    They don't look as bad as the brembo 6 pots so he should be alright rim clearance wise?
     
  15. BuuBBa

    BuuBBa Member

    Joined:
    Nov 20, 2011
    Messages:
    131
    Likes Received:
    3
    Looking good! Unsprung weight loss for the win.

    Whats the weight of the disc and caliper? Also the piston diameters would be nice to know..
     
  16. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    Nice to have you on the forum mate, it's always good to see more similar projects starting up! I've been wanting someone to go the whole hog with an S3 for years! There are lots of lovely cars on here, but none have yet gone down the full on track car route yet (none that are finished!) so it'll be great to see how you get on.

    They're a fairly thick disc at 32mm, and the bells are fairly thick and do have some set back. Brake clearance isn't an issue with my Super T's, but I'll have a test with with the Rotas, S3 rims, and TT comps at some point soon to make sure I don't get any issues.

    I'm afraid I don't know the exact weight of the caliper and disc, in my haste to get them on I didn't weigh them!

    Piston sizes are 30, 36.5, and 38.5mm :)

    Just been out this morning to bed them in and they're feeling pretty damn strong, stopping power feels very good, and extremely positivel. the yellow pads are less grabby than other pads I've used, but when you give them a press it really hauls up very well indeed.

    Annoyingly, my EZ bleed was leaking like hell yesterday, so by the time I finished bleeidng the brakes up the tyre was down to 6psi so it was moving pretty slowly. The pedal feel is a little long currently, but the top feels like air, so I'll find a tyre with some more air in and go and bleed them again now :)

    Initial impressions: very impressed.
     
  17. Sam_

    Sam_ Down under

    Joined:
    Mar 8, 2011
    Messages:
    2,939
    Likes Received:
    417
    That's interesting on the piston sizes. They're bigger pistons than an 18z caliper ;) Pedal feel on mine is great but as above, everyone tells me it's terrible...

    Brembo 6 pot 17Z - pistons 34/36/38 = 3060mm2
    Brembo 6 pot 18Z - pistons 30/34/38 = 2750mm2
    Brembo 6 pot 19Z - pistons 32/36/38 = 2956mm2
     
    ReDBull likes this.
  18. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    chatting to tuffty earlier and he said the pedal on hollies TT is quite nice and high still, so I'm very sure it's down to bleeding.

    Just bled all 4 corners thoroughly, and moved my airfilter because I wanted something else to do.

    Eating now, then test drive time.
     
  19. Sam_

    Sam_ Down under

    Joined:
    Mar 8, 2011
    Messages:
    2,939
    Likes Received:
    417
    It totally is about the bleeding. Everyone keeps banging on about how **** the pedal travel is on the 6 pots but in reality those people have either never fitted them or should stay away from brakes if they can't bleed them properly. A guy once told me you only have to bleed one side of the 6 pots! Probably why he reckons they have **** travel!

    If your pedal is anything like mine it'll feel better than OEM with marginally more travel but much more notice before putting you through the windscreen. I really like the pedal travel on the 6 pots. I imagine you might have a touch more travel though.
     
  20. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    OK, so potentially rookie error on my part here.....

    My driveway is on a fairly steep downhill slope. This is where I bled the brakes and master cylinder.

    Could I be right in thinking, that any air pocket trapped in the master cylinder, could well be sitting at the back (highest point due to down hill slope) of the cylinder and when I'm bleeding it's not getting pushed out at all?
     
  21. s3dave

    s3dave TFSI Hybrid
    Supporter

    Joined:
    Nov 11, 2009
    Messages:
    10,120
    Likes Received:
    734
    Yeah, higher the master cylinder the better
     
  22. Google AdSense Guest Advertisement



    to hide this advert.
  23. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    *goes to turn the car around then try again*
     
  24. junkyardA3

    junkyardA3 New Member

    Joined:
    May 2, 2013
    Messages:
    19
    Likes Received:
    1
    Love this thread. Hoping to put together something similar myself. One thing though, I can't seem to view any photos of the car either on my phone or laptop :(
     
  25. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    Right, I decided I don't want to keep messing around with it, so I've just bought a new OE master cylinder. Mine was £20 used off ebay last year when I snapped a nipple off the other, so of completely unknown origin. Brakes are kind of important, so I'm going for the 'do it once' approach.

    Going to attempt the hateful job of fitting it this evening.
     
  26. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    Not sure why that would be :( A few images on the first few pages seem to have died, but apart from that I think they're all still there.

    Anyone else have issues viewing pictures?
     
  27. s33nyboy12

    s33nyboy12 Well-Known Member

    Joined:
    May 14, 2012
    Messages:
    1,474
    Likes Received:
    192
    i wondered why none of the writing makes sense.... There is pictures????


    lol just kidding, yeah can see it fine mate. F*** changing master cylinder as an evening job CBA nick lol, you not bin at work all day...?

    Sean
     
  28. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,163
    Likes Received:
    38
    When i changed my Master cylinder it became a right pain to bleed.... i found cycling the ABS pump with Vag-Com improved things greatly .... bleeding A3 brakes properly may be one of those only things where it's worth taking it to the stealers to get it hooked up to one of their machines
     
  29. Scullies

    Scullies Well-Known Member

    Joined:
    Feb 9, 2012
    Messages:
    1,410
    Likes Received:
    441
    Any feed back on the poly resin mounts. How are they holding up?
     
  30. 16Klappe

    16Klappe I <3 Panda's!
    Supporter

    Joined:
    Sep 16, 2008
    Messages:
    5,796
    Likes Received:
    1,172
    Neeeeever going to happen haha :p
     
  31. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    ^^^ this. Nobody works on my car, apart from me, or, if I can't do it, mates who don't ask for payment :laugh:

    Had a good long chat with Dad today, as well as several phone calls with various brake people.

    The master cylinder is a minimum of 13 years old, possibly as much as 16, and of totally unknown origin, so the new master cylinder will go on this weekend.

    Also, in for a penny, in for a pound and all that, if we're doing this, we've decided we're just going to go all out and put the pads in it that we've always wanted for years: Pagid RS29.

    We're at Spa in October, running on WTCC slicks, and the car needs to be in top shape.
     
  32. Lewis583

    Lewis583 Active Member
    VCDS Map User

    Joined:
    Mar 15, 2010
    Messages:
    950
    Likes Received:
    89
    The machines the dealers use aren't all that. VCDS can cycle the ABS pump and the machine they use to bleed brakes is just a really expensive/fancy easy-bleed.

    Spa is definitely on my trackday list at some point in the future. I actually think I would rather do Spa than the 'Ring.
     
  33. 666markyboy

    666markyboy Well-Known Member

    Joined:
    Mar 17, 2008
    Messages:
    1,163
    Likes Received:
    38
    I'm just saying that's all..... but when i did mine , if you get air in that ABS unit it can be a right mare... i tried pressure bleeding , gravity bleeding the old fashioned 2 man method of bleeding and even rigged up a setup to suction bleed and pull the fluid through the calipers..... and the all write ups i trawled through seemed to come to same conclusion that you couldn't beat the factory way .... but like you i won't let anybody work on my car, I'm an Aircraft fitter by trade with 30 years experience and currently working on Eurofighter Typhoons so i know my around hydraulic systems and in the end i just had to settle for a soft pedal, it did get better in time though but I've never been totally happy with it
     
  34. Vorshprungdork

    Vorshprungdork Active Member

    Joined:
    Feb 20, 2004
    Messages:
    458
    Likes Received:
    39
    ^^^^^ This is so similar to my experiences with my Mk4 Golf. Had to change the M/C and ran the Easy Bleed out of fluid for justs a split second and wham **** brakes and days of bleeding, gravity, normal Vag-Com just as above and my pedal got a bit better in use but I was never 100% happy, ooh and I forgot to add, the closest I have come to an Aircraft fitter is my current car's last owner was one, me I am a self taught DIY mechanic, qualified in naff all, so even more interesting we had the same experiences lol.
    Oops forgot the actual advice bit, firstly I hope you don't have air in the ABS but if you do Vag-com probably won't cure it first time so run it a few times, ie not just one full cycle which I think is about 12 repititions anyway, so expect to do maybe 5/6 of them, it's very repeptitive but probably the best chance you have of improving it, good luck!
     
    #3752 Vorshprungdork, May 8, 2013
    Last edited: May 8, 2013
  35. bigal 1

    bigal 1 Active Member

    Joined:
    Feb 27, 2012
    Messages:
    430
    Likes Received:
    142
    Wee Prawn phoned EBC brakes today to see if they could shed any light on why the brakes faded when they got hot after only minimal use. Not track day hot, just some lively road use. LOVE the answer, "it's probably because you are not using the same pads on the rear.

    Yeah and i'm the Pope.

    Bless you salesman and all the people who travel in your empty head.
     
  36. Sam_

    Sam_ Down under

    Joined:
    Mar 8, 2011
    Messages:
    2,939
    Likes Received:
    417
    I don't know how people struggle so badly to bleed brakes. I left my old calipers connected right up until the last moment after fitting the new ones, swapped the lines over mega quick and then bled each caliper (furthest away/passenger first), outer nipple first (not sure if those 6 pots have 2 nipples). I did have a slightly ropey pedal at first but put it down to fresh discs not being bed in. It's spot on now. Key is don't let the reservoir get low. I even bled with the pedal which is a cardinal sin on here!

    Perhaps you have air in the ABS pump as said or the MC is stuffed like you say?
     
  37. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    I've never had issues before Sam. This is a first!

    whats the correct procedure, inner or outer nipple first? I've been doing the inner one first then outer.

    Not cycled abs pump yet, tried to but vagcom kept reverting back to shareware version for some reason. Ill see if I can figure that out this weekend.

    I don't believe for a minute the issue is related to rear pad choice though.


    Im not in too much of a hurry to resolve it, I plan to do it once now and do it right.

    Got a few more pad enquiries to make today after some interesting conversations last night. So we'll see what's what later on :)
     
  38. Sam_

    Sam_ Down under

    Joined:
    Mar 8, 2011
    Messages:
    2,939
    Likes Received:
    417
    Now I think about it I done the inner then outer too. It goes against the "furthest away from the MC first" principle though I guess.

    I must say I'm not looking forward to the next time I do mine. Sounds like a bit of a lottery heh. Time for an MC lottery avatar.

    Hope you get it sorted in good time.
     
  39. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

    Joined:
    Jun 19, 2009
    Messages:
    3,713
    Likes Received:
    474
    Are they the CP3215 D50 pad thats used in your brakes
     
  40. future

    future Scuderia Vittoria Edition 001

    Joined:
    Sep 7, 2009
    Messages:
    371
    Likes Received:
    33
    if it helps prawn i bled my 6 pots outer nipple first and pedal travel is spot on! exactly the same as stock but with lots more bite (im running 17z's) also good choice with rs29's, the most incredible pad ive run in 6 pots :)
     
  41. BENJAMIN

    BENJAMIN Active Member

    Joined:
    Mar 3, 2011
    Messages:
    504
    Likes Received:
    91
    Pop over to the workshop on Saturday if you get really stuck mate.
     
  42. Prawn

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    10,572
    Likes Received:
    2,147
    Cheers everyone for help and suggestions :)
    Andrew: yes it's the d50 pad shape. Apparently very common.

    Future: that's good to hear man, I had some rs19 on my 996 brakes a few years back and they were insane.

    Itll either be rs29 or something a little more unusual depending on a phone call with mr Brown later on :)
     

Share This Page