Let's talk about track day brakes

[TobyB]

I tried several sets of the Blues, because they worked amazingly well in the 2002 with
the bigger calipers.
In the E30, I had real trouble with them overheating and not heating up evenly- as in, I'd
get too much rear brake on lap 2, but by lap 10, they were overheated in the rear and not
doing much. And by tempi- paint indicators, they all got too hot after 20 laps.
Maybe with ducts in back and for a lapping- not race- car they'd hold up.

Then I tried the DTC60/ht10 combo for a few sets, and just never got a pedal feel I could
count on. Unlike the Blues, that I liked the feel of, until they went away.

The PFC08's seem to be the best of both worlds so far...

And I completely agree- brake feel and function are a match to an individual driver.

How far I've gotten,

t
ps, the cross- drilled brake lines are a rip- off- don't spend the extra money...

[djjerme]

See, I feel the opposite - I like the feel of the DTC60/HT10 combo, and not a fan of the PFC08's...

I have ran the 08's in a couple of the Enduro's (Gary's car and others) and the feedback just wasn't the same. I didn't feel like I could brake as deep as I could with 60's..

[Wschnitz]

Just popping in this thread to hammer on the Hawk pads suck, my hawks are almost toast and they only made it through maybe 5-8k miles of normal DD driving.

Pagids or PFC08 are gonna go on sometime soon.

[TobyB]

uhhh, which Hawks?
I can't imagine the Blues lasting a thousand miles on the street-
those suckers spit more shavings than a Bridgeport
when they're cold...

In fact, there's a thread here http://www.bmwpugetsound.com/vbb/thr...-rotors.49108/

about using the darned things to strip buildup off of expensive rotors...

And yes, on the E30, they really didn't work very well.

Jeremy, if I find any spares/part used pads of the DTC/HT variety(I would swear I had some kicking around)
they're yours next time we're on track together

t


t

[djjerme]

You know me Toby, I am never one to turn away hand me down spares!

:)

[HennaE30]

this is one of the rare threads on r3v that has stayed on topic, lets try to keep it that way :up:

any other input for those "weekend warriors" like me?

Swap pads, thats what we do on the E46. Z Rated's for the street, 08s or 11s (usually 08's) for the track. Also have a PFc front BBK on it. 350mm iirc.

[JRKOUPE]

Ill add my .02..

I run ht 10 on a massive street kit....my car is 99% tracked......ive run them for yrs, then tried DTC 60's......

I dont like the pedal feel on the 60's....I feel they are not as bitey, which I likey.

i will try the pfc or the st43 's.

that being said I need advice:


my brake pedal needs a pump or 2 on track to get hard. I have zero symptoms on street.


what say you?.....needs a bleed?, pedal knock back?, master cyl issue?, perhpas a ball jt going bad( caUSING THE KNOCK BACK?)..

[nrubenstein]

One thing to keep in mind, is that in addition to sucking, Hawk Blue dust is seriously corrosive. Do *not* run them on a car that you care about the paint on.

Having used various kinds of Hawks and Carbotechs on track, I'm very, very pleased with the PFCs. Everything else that I've used either doesn't last as long, brakes worse, or both.

[kingston]

My occasional track car is not a DD. If it were though, I'd probably do a dedicated set of pads and rotors for street use (only) and another set of both for the track.

I am going this route. I have the Massive Engineering Sport 300mm BBK up front, and have been running HT10s. Great on the track...not so much for a street car.

So I will keep running them on track with a different set of rotors, and I am going to go to EBC Green Stuff for my street pads with a dedicated set of street rotors.

[2mAn]

I think Im going to just buy a set of the cool carbons from Pelican... I got a coupon for 10% off haha

[Cephas]

Ill add my .02..

I run ht 10 on a massive street kit....my car is 99% tracked......ive run them for yrs, then tried DTC 60's......

I dont like the pedal feel on the 60's....I feel they are not as bitey, which I likey.

i will try the pfc or the st43 's.

that being said I need advice:


my brake pedal needs a pump or 2 on track to get hard. I have zero symptoms on street.


what say you?.....needs a bleed?, pedal knock back?, master cyl issue?, perhpas a ball jt going bad( caUSING THE KNOCK BACK?)..

Do these symptoms start right away, or are they after a couple laps?

When is the last time you did a full fluid flush?

When was the last time the calipers were rebuilt?


Check out the shit behind the piston in this thread:

http://www.e30tech.com/forum/showthread.php?t=39965

Also, using compressed air to push a piston out seems really dumb. Dont atomize brake fluid!

[TobyB]

Also, using compressed air to push a piston out seems really dumb.

Any other suggestions? I've only been doing it that way for 20 years or so...
...especially with a 4- pot fixed caliper, I've never found any other way to get 'em out without destroying 'em.

I DO wrap that wrascal in a towel... which helps a lot with the cloud of breatheable yumminess...
...and usually catches the flying piston!

t

[z31maniac]

Also, using compressed air to push a piston out seems really dumb. Dont atomize brake fluid!

How do you do it then?

[berlow94]

My car is a high hp S52 swapped dedicated track car. Brakes are Massive race kit with 320mm rotors, Wilwood SL6 calipers up front and SL4's in the rear. I'm running dual 5/8" master cylinders with no brake booster and a remotely adjustable bias bar.
Car weighs less than 2500 lb's with a full tank of gas and me in it.
I started off with Ferodo DS2500 pads last year and hated them.
Currently on DTC60's. They eat rotors if driven below operating temp at all and get kind of noisy when they get up to temp.

(Which im sure is partly due to the fact that i have giant solid radial mounted calipers)

With that being said, the friction level and initial bite are amazing. Totally worth the noise.
The wear is also very impressive!

Here is a video example of the noise: https://www.youtube.com/watch?v=6_qRwaq49Ag

[JRKOUPE]

cephas..pm sent




andrew..

I kinda like that noise..its comforting hearing the brakes work on the track....

btw..CAE porn...geez, I gotta visit you....sweet.

do u run 16's...r6 or 7?....or do u run 15's?