Aztec Performance Ltd

iTrader: (234)

Looking at APs.

Is their much between them in performance?

Which are the model is the better caliper?

I find that my OE 4-pots struggle with multiple high-speeds stops (150-10mph x 3,4) probably harder on the brakes than some track conditions.

I run 17s on MY99 but would like the option to use 16s if there isn't much between the calipers.

bighead

iTrader: (1)

6 pots are the best by far ...but if you want to use 16" maybe 4 pots will be up to the job

stockcar

there is a slight performance advantage (6pots marginally better) but very few people run 4pots against 6pots (330mm set-ups) and i doubt many peeps would tell the difference in most circumstances

however, if you wish to run 16's then you will probs need the 304mm 4pot kit, which works very well and certainly far superior to the O.E's............

alyn

JIM THEO

The key-word here is heat dissipation.
All quality brake kits above 335mm use floating discs but their advantage for every day or light track use is minimal and of course they cost much more and the floating discs are prone to wrap if fitted wrong or the wheel bearings/hubs aren't in perfect condition.
In most cases if you experienced fade from your brakes and overheat (NOT due to brake fluid) the 330's aren't enough for your application.
JIM

warrenm2

fit some decent pads too - DS2500 are only fast road, and not that great under real pressure IMHO

Aztec Performance Ltd

iTrader: (234)

How much better are the 4 pot APs (304s) than the OE 4 pots?



Jim: 330s+?

warrenm2

Night and day - the OE 4 pots are crap

JIM THEO

Day and night Bob!
But I have the 330mm kit and not the 304mm.
Grahamgoode as Rogerclark sell them but Graham's kit uses custom made bells and brackets.
Just remember that even a change with performance pads in the front changes the Brake Torque distribution F-R.
Thus in my WRX MY04 with 2 pots + DS2500 pads rear using stainless steel brake lines and AP 330mm + DS2500 front I have 8,11% frontward brake torque change which in some cases is good in some bad!
JIM

Aztec Performance Ltd

iTrader: (234)

Is 304mm the biggest disc that will fit under MY99 OE 16"s?

Does having braided lines on the front and not on the rear effect the balance much?


Bob

warrenm2

I think the biggest is actually 310mm for some calipers but for APs the max size is 304.... but yes basically. And the fact you upgrade the front disks, calipers and pads far outweighs the differnece from the braided lines, although would recommend changing all, no point spoiling for ha'pennys worth of tar as they say

bbdotcom

hi i have just bought a fantastic brake kit from compbrake 330mm x32mm powervane racing rotors and there prorace one circuit series calipers Allfitted great fine engineering we have just done the nureburg ring and they are excellent deemon tweeks sells them for £1100 but if you call them direct you can get them for £650 have a look on there website www.compbrake.co.uk cheers BB

IanK Spec C

They seem very cheap. Do they have dust seals on the pistons?

Regards,

Ian

Chelspeed

LOL

Four posts all saying the same thing, I think he owns the company. If so then buyer beware, he might be a bit biased.

awd wrx

no they dont have dust seals , they are exactly the same design as wilwood calipers , the Comp ones come from the states , so maybe they are made by the same company , comp brakes used to be TAS motorsport before going bust , again ....

Creepy

Off topic, I have Wilwood calipers without dustseals and after 4 years, still no problems.

On topic : assuming that both 4 and 6 pot systems are in decent shape, the only advantage you will get from 6 pots is slightly lesser stress on the system.
If you REALLY want brake power, then use road legal slicks (Pzero Corsa....), or even plain slicks...
Prepare to look after your eyeballs when they've popped out during your first big brake test then...

CAT2

iTrader: (3)

Just got a set of four pots and 330x32mm's from compbrake.co.uk, no I am not connected to the company, they are superbly made and incredibly powerful. I phoned the company direct and they were very helpful indeed.

CAT2

iTrader: (3)

If you want smaller discs, give em a call, they will probably still be ableto help.

ZEN Performance

Bob,

If you want the 16" then it's the AP304 kit. If you don't mind 17", then Stoptech or AP 330 kits. I don't know anyone that has back to back tested the AP 6pot caliper over the 4 pot on the same size disc. But other tests have proved interesting http://www.stoptech.com/proven_techn...est_wins.shtml

I can't complain about the stoptech stuff, except they don't do a kit that fits under 16" wheels.

Personally I think the right kit for you is AP304 if you want to have the option of running the 16s. Good pads are essential whatever you do.

Paul

pedro72

Just had AP six pot kit fitted to mine yesterday. Took 3 hours due to absolutely no room underneath my P1 17"s and initially still had a few noises underneath. Havent really tested them properly but compared to OE 4 pots with braided hoses and Pagids, there is no comparison. Have a track day at Brands on Monday so should provide ample testing!!
They come with Ferodos ds2500's and only cost £1200 in recent gb from godspeed.

Mark A

iTrader: (1)

Pedro

What size disks?

pedro72

335's grooved.

peterpeter

would the £650 kit from comp brake be a significant improvement over the my05 sti standard gold brmbos???

Could i still use the brembo callipers??

JIM THEO

Strange question mate, why not buy a set of good quality pads-disks for your calipers?
AP strap drives, DBA separated discs/bells, even Alcon sells disks for the Gold Brembos and there are many different pads available on the market to cover every different taste!

awd wrx

the brembo calipers you have will be much better than the Comp brakes , callipers discs and pads are all bigger , just fit a better disc and pad

peterpeter

I need help...tell me what you would get with a budget of £500 perhaps stretching to £600.

and where from?

Sorry im useless.

bbdotcom

hi i have bought a compbrake brake kit direct from the factory its excellent and they are made in Blackburn were you can be shown round and see them being made so you are very wrong mate they used to make parts for TAS ( who are still trading selling vauxhall parts i am told) the only part in the kit that are from america are the rotors made by powervane racingthe same as used by prodrive and ralli art i asked them about a group buy and said if approached they would to late for me as i have mine they are excellent demon tweeks sells the same kit for £1100 i got it direct from them for £650 and they are nothing like wilwood

awd wrx

Prodrive my ar*e , Prodrive use Alcon discs , well they did the last time I was there , I have been involved with rallying for 20 years and I dont know anyone using these discs.

Steven Fell used to own TAS , they went bust and he now runs COMP brake

JIM THEO

Prodrive uses ALCON discs not powerwave etc for the 330mm Prodrive/Alcon brake kit!
As for better discs DBA sells many different discs for the STI Brembos as AP and many other companies do.
Regarding pads I'd prefer Pagid RS 4-2.1, EBC Yellowstuffs R (1793 compound), DS2500 etc if you plan to use them more on road than on the track.
Personal choices mate, if you don't try you don't know what is better for your needs and I have tried more than 5 brands/compounds of pads!