BalliSTIc Posted June 21, 2009 Posted June 21, 2009 NOTE - if this is felt to be a bit of a duplicate post, feel free to flame, but I DID feel it was a rather specific situation and would value advice. OK - that's that out ra way...! I'm lucky enough to be able to use my Dark Age STI as a daily drive, but taking to the back roads en route to work at... enthusiastic... speed led me to chew through the factory front pads in VERY short order (rears OK and front discs OK). Thinking I probably gave 'em enough beans to get heat into them and the tougher compound being harder wearing, I put EBC yellows on the front (Brembo fitment), fully aware they'd take time to warm up en-route to/ from work (30 miles each way) and figuring after a coupla hard stops they'd be fine. Sadly, they still lack a bit of bite, even when nearing my destination and (as you can appreciate) it dents the confidence somewhat. Any thoughts on a cure? Uprate the factory discs to match? Or are a new set of pads a better option (bearing in mind I'm standard at the mo, but gearing up for "the usual" and more grunty stoppers would probably be better! Cheers folks! Glyn
scooby222 Posted June 21, 2009 Posted June 21, 2009 Hi mate,depends how far your planning ahead-the brembos will take quite a bit more power so id go with braided hoses and maybe some higher grade fluid. pads wise id stick with either mintex 1144 or ferodo ds2500,ive the mintex with goodridge hoses and miller brake fluid from awd and they give good bite right from cold. once your discs are nearing the end of their life then id look at performance friction discs or a full on 8 piston setup like ksport
DR Motosport Posted June 21, 2009 Posted June 21, 2009 Glyn, How long have you been using the yellow pads? I've got a set fitted to my track car on AP 330mm 6 pots. Also the same fitted to the standard rear calipers. What I found was they were ok, to start with, nothing special. Then they went through about 3 cycles on track when the pedal felt ok but the car wasn't slowing as well as it should. They were ok - then poor, ok - then poor, ok - then poor. After those 3 heat cycles they are great all the time. So they do take a bit of work to get them working when new pads are fitted, but now I don't think there's many Subarus that could brake later than me at Knockhill. I would add they are pretty sore on the discs. Dipsy, on my JDM STi road car, I use 1155's front and 1144's rear. Mintex OEM pads are rubbish, so would change those first.
BalliSTIc Posted June 21, 2009 Author Posted June 21, 2009 Thanks for the responses so far... certainly room to uprate the hoses/ fluid in the 1st instance. Glyn,How long have you been using the yellow pads? I've got a set fitted to my track car on AP 330mm 6 pots. Also the same fitted to the standard rear calipers. What I found was they were ok, to start with, nothing special. Then they went through about 3 cycles on track when the pedal felt ok but the car wasn't slowing as well as it should. They were ok - then poor, ok - then poor, ok - then poor. After those 3 heat cycles they are great all the time. So they do take a bit of work to get them working when new pads are fitted, but now I don't think there's many Subarus that could brake later than me at Knockhill. Interesting you should say that... Have done about 3K on them now. Was out on a run/ meet not long after fitting and they felt a bit slippery, but I figured they were just bedding in. Have had various occasions since where they've felt better and then others when I'm less convinced again. Would have thought by now they'd have settled. I would add they are pretty sore on the discs. Yeah, so I figured. Discs look rather shiny at the mo! Difficult to say how quick they're chewing up! I wondered if the simplest answer was to stick on some uprated/ cross-drilled discs that'd maybe give a bit more bite. I suppose if I'm gonna up the power I might be better to put up for now and uprate the alloys for some bigger stoppers. Thoughts?
arch Posted June 22, 2009 Posted June 22, 2009 I wouldnt use drilled discs. For a road car on Brembo set up then I would go for Performance Friction Z compound pads every day. If the discs are not warped then put some PF pads on and give the discs a good clean with a green pad before fitment of new pads to remove any brake deposits coating the surface of the disc.
BalliSTIc Posted June 22, 2009 Author Posted June 22, 2009 It is burning the disc if it's shiny? Hmm. Wasn't sure if your reply was a statement or a question with the "?" on the end. I'd figured it was just normal wear... they looks almost mirror polished *chuckle*. But it's very even, rather than looking like heat "spots" - is that still what you'd expect? I wouldnt use drilled discs. For a road car on Brembo set up then I would go for Performance Friction Z compound pads every day. If the discs are not warped then put some PF pads on and give the discs a good clean with a green pad before fitment of new pads to remove any brake deposits coating the surface of the disc. They don't look warped. VERY shiny as noted... don't see much crud to clean off! Any idea what the PF Zs are like for dust, mate? I guess we're probably going over old ground here... I'll look for some old threads on this... any helpful links appreciated.
fai17 Posted June 22, 2009 Posted June 22, 2009 Speak to Alyn @ As Permance he is your man for brake parts or any other scooby parts.
stevie 4 Posted June 22, 2009 Posted June 22, 2009 i am running the ebc yellow pads on my front with drilled and grooved discs and i have to say the first couple of uses of the brake pedal they are not very good but after that they are ok.but have to say that they are really hard wearing on my discs. i have had the pads on my car 2 months and i already need to change my shiney worn discs. i am going to put solid discs on this week but if they start to go the same way i will be taking the yellow pads off and putting the ebc red pads on i think
BalliSTIc Posted June 22, 2009 Author Posted June 22, 2009 i am running the ebc yellow pads on my front with drilled and grooved discs and i have to say the first couple of uses of the brake pedal they are not very good but after that they are ok.but have to say that they are really hard wearing on my discs. i have had the pads on my car 2 months and i already need to change my shiney worn discs. i am going to put solid discs on this week but if they start to go the same way i will be taking the yellow pads off and putting the ebc red pads on i think What discs are you planning on?
stevie 4 Posted June 23, 2009 Posted June 23, 2009 What discs are you planning on? not sure yet i think it will probably be mintex
BalliSTIc Posted June 23, 2009 Author Posted June 23, 2009 (edited) I wouldnt use drilled discs. For a road car on Brembo set up then I would go for Performance Friction Z compound pads every day. If the discs are not warped then put some PF pads on and give the discs a good clean with a green pad before fitment of new pads to remove any brake deposits coating the surface of the disc. I ask only for interest - why not drilled discs? Or grooved for that matter? Do they just knacker the pads quicker? Presumably a harder compound disc would give better friction vs my current pads... or am I better just cutting the losses and going PF Zs as suggested? Stevie, you had any feedback about EBC discs? Was wondering about a set to match the yellows. ALSO... if I uprated to, say, an AP racing or Alcon upgrade on the front, can you switch the heavier duty "front" brembos to the rear... or am I just being really green and stupid here? Edited June 23, 2009 by BalliSTIc
scooby222 Posted June 23, 2009 Posted June 23, 2009 ive seen waaaay too many drilled discs split through the holes on cars - doesnt seem to happen so much on bikes but they have better cooling i guess
BalliSTIc Posted June 23, 2009 Author Posted June 23, 2009 (edited) ive seen waaaay too many drilled discs split through the holes on cars - doesnt seem to happen so much on bikes but they have better cooling i guess Perhaps wonky terminology on my part... perhaps slotted or dimpled was more whatI meant, eg: http://www.ebcbrakes.com/automotive/ebc_3g...ors/index.shtml Edited June 23, 2009 by BalliSTIc
stevie 4 Posted June 24, 2009 Posted June 24, 2009 Stevie, you had any feedback about EBC discs? Was wondering about a set to match the yellows. i thought about that myself but i have not heard anything about ebc discs.but ran mintex all round on my last car so i know what they are like.and thats all i am basing my descision on.
sti pretender Posted June 24, 2009 Posted June 24, 2009 I warped my EBC discs and have heard of a few others doing the same, changed to Godspeed disc as you get a 12 month guarantee against warping and that includes track use. Still bedding them in just now with Ferrodo pads, on track this weekend so will see how they hold up with heavy braking.
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