MiGi

As title...........

I have a sti6 so it has the 300mm 4 pots on the front but these are pretty c**p. I want them for hard trackday use, am i going to find anthing that won't fade on the track and to fit under 16's?

cheers

simonburton

I run 16" wheels for track use and have just uprated mine with some new discs (DBA 5000) from TSL, Nottingham. I still use the OEM callipers, use DS2500 pads and they are great.

Ask for Graham and say Simon recommended you.

Good luck

greasemonkey

If you want a good braking solution within the bounds of a 16" wheel, you could fit the Brembo 308mm kit, but IMO this is a waste of money bearing in mind that the standard calipers are actually very good.

With a good aftermarket disc/bell setup, good pads, braided lines and high temp fluid, plus some ducting to make use of the air from the "wedge" intakes (remove the wedges themselves) under the indicators, your brakes will not fade.

The DBA 5000 series discs as used by Simon are a good option, while the two piece setup being developed by Performance Braking (01600 713117) should be ready by now. For track use you'll probably want a slightly higher temp pad than DS2500, think more in terms of DS3000 or Pagid RS15.

MiGi

Sounds like a plan,

I'll look into this option....

Is there anything else thats worth considering in the rest of the scoobies brake system? Aside from better fluid and brake lines etc... How about rear calipers and discs? (I know it makes no difference on lighter cars but does having bigger rear brakes offer a advantage on these heavy things)

greasemonkey

There's not a huge amount you need to do to the backs, as the front brakes do the vast majority of the stopping, especially on a dry track. Sure, if you've got a really big brake kit fitted to the front, you might get to the stage where the rears need some upgrading to keep up, but if you're sticking to the 294mm front brakes you shouldn't need to make any fundamental changes.

Obviously if you're going to upgrade the brakelines you'll need to do the rears as well as the fronts to get the full benefit, and it's also advisable to match the thermal performance of the front and rear pad compounds (even if you don't go for the same compound front and back).

You don't for example, want to leave a soft "road" pad on the back while putting a racing compound (with less cold bite) on the front. Doing so can result in a situation where the rear wheels can start to work first, with unpredictable results.

trout2

Dont waste your money on disks and pad combinations. I have cracked so many disks, replaced wheel bearings and hubs its not worth it. Go straight for a brake kit. I use an AP braking kit on the front (approx £1500). Beware you must run them in, warm them up and cool them down and do not leave your foot on the brake when stopped. This will decrease your lap times and your overheads

greasemonkey

That's doesn't seem to be an option for the original poster Trout2, as it seems as though he wants to keep his 16" wheels.

In any case, you don't need to spend 1500 quid just to get a set that won't crack. The route suggested above will be fine for track use. Sure, a big brake kit will give more ultimate retardation provided there's enough grip to make use of it, but as far as longevity/robustness is concerned, MiGi'll be fine with the above.

MiGi

Its not the money that stops me from doing this brake conversion. I just find on the track its the driver that really makes the difference and I'm not that good yet so there is little point in spending huge cash on brakes. Last track day I went to there were 3 scoobies all very different specs and they were all the same out on the track. I just want something fade free that I can be confident in. If that means going for ap's and 17's then so be it but I'm looking for options on standard wheels atm. Thanks for advice so far, any more options???

stockcar

we have been involved in numerous "grpN" (production spec) race and rally cars that have no option but to retain the std set-up....................never had any problems with "fade" on track or tarmac stages, just depends on how 'aggressive' you would like to be in your pad and system choice!!

whilst doing a "shakedown" at a local trackday was always pulling distance out of most other trackdayers under braking using Pagid rs15...................

can sort a "spec" to suit your needs, if you need any specific advice feel free to email or phone me (0191-4103770)
alyn - asperformance.com

BART!

Totally agree ! Every brake-kit has its limits , just like there is never enough power ....

I drive the Pagid grpN+ with RS15 or RS14 and after having troubles with cracked discs and vibration , I finally saw the light ....after improving cooling on track (cooling tubes directing to discs and calipers and removing dust covers front and rear) , I think it is cheaper to run then an expensive AP kit that might last twice as long but replacements parts are triple in price and what about availability ...

ps RS15 quite agressive though but absolutely the best in group N

TTZZ

In my opinion the apracing kit is a good option.
CP5200 - 1035G8, 304x28 mm grooved,
4 pots http://www.apracing.com/roadcar/cali...?family=CP5200
and ferodo ds2500 pads http://www.apracing.com/roadcar/brak...?pad=CP3215D50

http://www.apracing.com/roadcar/brakekit/dataselect.asp
and goto subaru/impreza. they suit well under the standard 16" wheels.
http://www.apracing.com/roadcar/brakekit/p16073.pdf
http://www.apracing.com/roadcar/brakekit/p12073.pdf

or have a look here
http://www.scoobymania.co.uk/brakes_info.asp?c=1#here
and scroll down.
Other comparable pads are pagid rs4-2 and mintex m1166, these pads are a little bit more harsh to the disk.
And have fun,
Jan-egbert

Floyd

iTrader: (9)

I got the AP 310mm 4 pot set up but I would have been tempted to try the DBA 2 piece kit from Aus if it weren't for the fact that I couldn't get a price from MRT. Now they do 'em here I'd try that route for a good compromise.

F

MiGi

£501.73 for a pair of DBA 5000 series discs seems just a tad steep!

Is this a reasonable price?

How much are oem discs?

Does anyone know where to get them cheaper?

greasemonkey

Yes, that's a lot of money given the alternatives. You could do far worse than contact Performance Braking as suggested up top. Last time I spoke to them (which was October time) their two piece system for the Impreza was near completion, so I'd imagine it'll be done by now. Likely to be considerably cheaper than the DBA product, and at least as good.

The OE discs are about £40 each incidentally.

Big Sky WRX

I'm in the same boat, don't want to go to bigger wheels- I like 16" wheels.

We have a little different setup in the US brake wise- 2 pot sliders in the front/1 pot sliders in the rear. Rotors are the same up front, 266X10mm non vented in the rear.

The US setup is very front bias (slightly bigger pistons than the Suby four pots/smaller discs rear). What I've done thus far is the usual ss lines/fluid upgrades along w/ DS2500's (f/r). I've also upgraded the rear rotors to 290X10 Legacy rotors- this helped move a little bias rearward, which definitely helped braking. I also upgraded front rotors to DBA 5010's (two piece) rotors. The DBA's besides providing quality heat treated rotors and aluminum tops, also manage to squeeze another mm in thickness (25mm) and in diamter (295mm)- a little bonus.

In addition I've fabbed up some duct work w/ 2.5" ducting straight to the center of the rotors- air is sourced through the fog lamp holes.

This provided pretty good braking at the track, but I have been eyeballing the AP kit- 304mm not 310 as someone mentioned above) X 28mm rotors. They also use smaller pistons than the US setup moving bias even more slightly back.

I think I will go to DS3000's next track day though.

Big Sky

bartmanuk

ive got 16's on my MY98 uk turbo,and i have hi-spec billet 6 pots with 310mm disc's,theres not alot of clearance from caliper to inside of the wheel but they do fit...

BM

Godspeed Brakes

iTrader: (259)

To give you another option , I make a 2 piece disc and bell , which is the standard diameter of 294mm , but are 28mm thick for track use , the discs come with a set of caliper spacers to fit between the 2 caliper halves , which makes tham wide enough to fit a thicker disc into , I sell these for £425 , these fitted with a good pad will be well up for track use
Cheers Ian

warrenm2

I also have the Hi-spec kit - but only the 4pots. Its the 310mm Monster 4 setup - with the large piston caliper (apparently they do a small piston setup which has less initial travel but less outright stopping power). I use Racing Blue fluid (an American brand I think) and DS2500 pads on my MY98 classic.

I have just come back from a track day today at Oulton and I can honestly say that they have absolutely no fade and fantastic performance! And that was doing 2.07 laps on the International circuit. I managed to get the std setup to go to the floor after 8 laps at Coombe last year on a cooler day than today.

Little bit uneven at the limit but controllable (this is not a big deal just thought Id mention it) and NOTHING was outbraking me.

1200 quid including fitting (but I dont recommend you get Hispec to fit them!). I think TSL do them (their Billet 6 are in fact resold Hispec kits).

StickyMicky

i need sum bigger brakes as well, i would be tempted by the standerd 4 pots of there were sum decent pads and discs to go with them, the god speed kit looks intresting

i would have to buy sum 4 pots first tho

trout2

blah

dela

I can vouch for the Godspeed kit that Ian mentions above, as thats exactly what I have - as I was keen to retain my 16" rims.

I have been on quite a few trackdays with them and never had any fade, and I know about fade after doing a couple of trackdays on the standard setup.

My setup is Pagid Blue pads, braided lines throughout and Silkolene DOT4 fluid (v.high boiling point)

dela