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Put it in terms of a race car:

Posted by: Pat-SoCal on 2005-06-02 14:49:01
Account #: 16079

In Reply to: oh sure, if you put the whole "B5 S4 street/track car" restriction on it... posted by ryans4 on 2005-06-02 14:42:41

Outside of running an Audi sedan in ALMS or World Challenge, both of which allow aftermarket pedal and master cylinder assemblies... Grand Am Cup, SCCA Touring, NASA GTS and other street car based racing series require the retention of the factory master cylinder. You can't put a driver in a car with big brakes on OE systems... he'll never drive for you again.

Thread:

New thread.. Brakes what has Pat tried, and what is his summary, Ryan and others may chime in - Milpitas2.7T 2005-06-02 11:46:50 (464 views)

all are better then the stock anchors, but like everything, how much do you want to spend... - ryans4 2005-06-02 12:58:32 (3696 views)

Got another question for you if you don't mind... - RocketBoy 2005-06-02 21:59:48 (304 views)

actually, i'm backwards, the leading edge of the pad is hotter then the trailing edge... - ryans4 2005-06-03 08:12:53 (298 views)

I think stock brakes grab HARD with very little pedal pressure, how do the various kits compare to - mjtaylor 2005-06-02 15:26:43 (353 views)

well, you have to assume the same pad. At that point, pedal feel is going to be based on pistons... - ryans4 2005-06-02 15:41:23 (417 views)

Depends on which pad you have in there... - RKA 2005-06-02 15:39:49 (370 views)

Do you think that caliper displacement has any significant affect on brake actuation time, or the - RocketBoy 2005-06-02 14:46:10 (330 views)

I think it's more the piston seals then anything else that you'll notice with on/off times... - ryans4 2005-06-02 14:57:55 (329 views)

How do piston seals affect actuation times? Is it stretching of the seals under pressure increasing - RocketBoy 2005-06-02 21:55:04 (244 views)

the seals retract the piston when off the brakes... - ryans4 2005-06-03 07:59:16 (312 views)

Of course there will be. *edit in regards to time vs. pressure* - Pat-SoCal 2005-06-02 14:56:52 (290 views)

That's a good point. I have always wondered about the ability of stock master cylinders to be able - RocketBoy 2005-06-02 22:05:08 (240 views)

I have a question... - RKA 2005-06-02 13:59:32 (353 views)

Jumping to eight pistons often means less pad area. - ryoung 2005-06-02 22:09:58 (503 views)

does 8 pistons always mean 2 pads per side like that? - Andrew C. 2005-06-02 22:39:00 (286 views)

Not certain, but I believe yes. - ryoung 2005-06-02 23:10:04 (280 views)

Hmmm... - ryans4 2005-06-02 14:24:41 (754 views)

Re: F1 brake calipers - ryoung 2005-06-03 00:26:39 (383 views)

good to know. Interesting that the caliper is that long for only 6 or 4 pistons? - ryans4 2005-06-03 07:52:49 (240 views)

They get an amazing amount of stopping power under a 13" wheel. - ryoung 2005-06-03 08:46:48 (224 views)

My simple-minded thoughts for our application: - Pat-SoCal 2005-06-02 14:38:12 (377 views)

oh sure, if you put the whole "B5 S4 street/track car" restriction on it... - ryans4 2005-06-02 14:42:41 (340 views)

Put it in terms of a race car: - Pat-SoCal 2005-06-02 14:49:01 (328 views)

LOL Totally agree - Eric Fletcher 2005-06-02 18:26:15 (272 views)

more pistons doesn't have to mean longer pedal travel? - ryans4 2005-06-03 07:49:41 (359 views)

What I was saying was... - Pat-SoCal 2005-06-03 08:28:19 (315 views)

ok, i do follow you, and you are totally right, but... - ryans4 2005-06-03 08:42:28 (281 views)

Yeah, exactly - Pat-SoCal 2005-06-03 08:58:28 (349 views)

from your posts, i'm guessing your brakes come on quick... - ryans4 2005-06-03 09:01:44 (362 views)

How cute? You guys should hug now... go ahead closing my eyes. - Tomasz@StartupRacing 2005-06-03 10:57:36 (350 views)

i'm not sure I follow you, but I'm sure I agree... - ryans4 2005-06-02 14:52:09 (260 views)

I just started my ESL class :P - Pat-SoCal 2005-06-02 14:58:29 (220 views)

Hero post, please add to FAQ or Searchable archive or something, seriously. - Milpitas2.7T 2005-06-02 13:22:42 (250 views)

Nice writeup. - NO.BRAZIL 2005-06-02 13:21:21 (228 views)

Nice write-up, Ryan. I like how it's pretty objective. - O.W. Kenobi 2005-06-02 13:20:24 (303 views)

2nd Very nice, Ryan! - Pat-SoCal 2005-06-02 13:43:12 (277 views)

3rd, excellent write-up! - ryoung 2005-06-02 22:11:46 (238 views)

with all that being said, I run 6 piston Alcon's... - ryans4 2005-06-02 13:23:34 (263 views)

I run 4-piston Alcons and I would agree that Alcon is the best brake setup for the S4. - NO.BRAZIL 2005-06-02 14:04:28 (324 views)

Thanks for the thread... I was writing you an e-mail when I saw it :P Here we go: - Pat-SoCal 2005-06-02 12:36:36 (676 views)

And to shock Most people here I agree on the "STOPTECH ROCKS" comment - Eric Fletcher 2005-06-02 18:35:34 (395 views)

thanks bro!!! appreciate the info, man more suspension/brake porn :) - Milpitas2.7T 2005-06-02 13:23:29 (331 views)

SKIP the Tilton Master Cylinder... - ryans4 2005-06-02 13:10:40 (310 views)

Yes, I know. Not my car though. - Pat-SoCal 2005-06-02 13:44:39 (296 views)

a year? on a tilton MC? that was downright optimistic. - ryans4 2005-06-02 13:52:53 (233 views)

reasoning you stuck with the 332s? - internecine 2005-06-02 12:51:16 (309 views)

I don't believe there is a necessity for a larger rotor. - Pat-SoCal 2005-06-02 12:57:14 (312 views)

so brake fade wouldent be decreased significantly with a larger rotor? - internecine 2005-06-02 13:03:45 (268 views)

I doubt I'll run into that problem on my car. - Pat-SoCal 2005-06-02 13:41:10 (310 views)

that's really a pad thing... - ryans4 2005-06-02 13:12:24 (406 views)

so why have 370mm rotors? - internecine 2005-06-02 13:18:06 (249 views)

leverage and efficiency increase... - ryans4 2005-06-02 13:20:46 (223 views)

I happy with StopTech fronts and Stasis rears... - Tomasz@StartupRacing 2005-06-02 11:56:48 (441 views)

Same setup as I have. Although I need new rotors and would rather stay away from that Coleman crap - Eric Fletcher 2005-06-02 18:20:46 (293 views)

So what rotor are you going to get? - Tomasz@StartupRacing 2005-06-02 18:49:34 (299 views)

I'm looking at options - Eric Fletcher 2005-06-02 19:14:30 (298 views)

Well... brakes and oil cooler. - Tomasz@StartupRacing 2005-06-03 10:55:18 (259 views)

Naahhh Many yers ago I built a big brake kit for the 5000TQ and 200's (Type 44 cars) - Eric Fletcher 2005-06-03 10:58:39 (357 views)

" I would not recommend it for street use. " the 332 kit, why is that? - Milpitas2.7T 2005-06-02 12:17:40 (250 views)

I believe he means street use *only* as that would be a waste. - DocSlow (Mini P!g) 2005-06-02 12:18:42 (253 views)

Yes! - Tomasz@StartupRacing 2005-06-02 13:29:32 (225 views)

I used the axxis pads on the track (very small track) recently. - DocSlow (Mini P!g) 2005-06-02 11:58:50 (221 views)

How are your brakes now? I ruined a set of rotors - pad material transfer. - Tomasz@StartupRacing 2005-06-02 12:12:01 (321 views)

I had major vibrations under light braking for a while. It's been ~2 weeks now and they seem okay. - DocSlow (Mini P!g) 2005-06-02 12:13:33 (246 views)

Start saving for new rotors... you will see. - Tomasz@StartupRacing 2005-06-02 13:30:35 (354 views)

Pat has Stoptechs on his car. Good enough for him, good enough for me. :) - DocSlow (Mini P!g) 2005-06-02 11:49:02 (265 views)

Ya but think he went thru a few iterations. 355's front and custom rear, now? or other - Milpitas2.7T 2005-06-02 11:55:17 (345 views)

good topic, i've been considering new brakes lately. I'd love to hear what our AW 'pros' recommend - mjtaylor 2005-06-02 11:49:00 (347 views)

ECS stage III has been great for me so far. 17 track days on them so far... - O.W. Kenobi 2005-06-02 11:54:29 (398 views)

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