2 and 9 haven't been on the lottery in a very long time, think the last time they were, I got 5 numbers.

Was only jesting Jon.

 

You may jest, my wifes syndicate got 5 numbers 12 years ago and won £85k between 10 of them - paid for respray at the time

 

Alyn, could you offer an explanation as to why this would happen?
K-sports use a 2 piece disc, as do PF, and have 8 pot calipers as opposed to the Brembo 4's.
PF discs themselves cost more than the whole K-sport setup.
I'm guessing there must be more heat resistance in the PF discs to justify that price?
Just FYI - I'm not having a go here, just interested why these are so highly rated AND priced!

The problem otherwise is I'm looking at £500 for Brembos, then another £800 for discs!
If I'm not planning to enter time attack would I ever fully exploit the potential of that setup on the road?

 

the PF discs use a specific high quality material, prescision machined and then fully heat treated (one of the only manufacturers to carry this out)

PF supply discs for various alternate manufacturers firments as well as the 2pce type replacement ones they do for the EVO's, STi's, etc........generally speaking they are far hearder wearing than even the likes of AP, etc.

 

How much!! I only won £1400 with 5 numbers, and I only had to share with myself.

Anyway, back on topic.

 

5 plus the bonus ball apparently - on a good week it would have been £125k between 10 of them

 

I see, so if I'm understanding you correctly, the main difference here is simply the ability of the PF discs to shed heat build up in comparison to their competitors, allowing the discs to run cooler and not transfer so much heat to the caliper, pad, lines etc?

One of the guys at my local Subaru dealer is an enthusiast and he's running AP's with PF discs, but then he's running over 400bhp on his.

Anyhow, on a WRX running between 280 and 300bhp, what would be your recommendation for some fast road driving and the odd occassional trackday - given that I already experience brake fade on standard 4 pots with grooved discs front and rear, and braided lines with EBC yellow stuffs if I hammer them with 4 or 5 consecutive hard stops - I'm looking for something better.

Budget of about £500 would be great, prob. £800 at the most.

 

hi, my standard 4 pots can take some abuse and not fade, well not on the road anyway.i,m using the new blue stuff pads which are superb for the money.
if i were to change calipers i would go for the k sport package with the blue stuff pads, rather than buy old brembo,s that may or may not need reconditioning. K sport,s are used on some time attack cars so can take serious abuse.

 

My standard 4 pots don't do well with regards to brake fade under a few repeated heavy stops on the road, never been impressed with em.
I've tried DS2500's, Yellow Stuff, etc. Got grooved discs, braided lines etc etc etc....still way short of the stopping power the newage WRX should have in my honest opinion and reduces your confidence in the car.
Blue Stuff NDX pads are being reported to have some issues with the 4 pot calipers (see the thread on Pagid Vs Blue Stuff) so I'm not sure I want to go down this road if the calipers don't seem up to the job.
I agree with you on the Brembo front, plus I run 17" OEM wheels and different tyres in the winter months, so I'd need to swap those too which is just too much of a pain for me.

I'm just sizing up two options at the moment - the K-Sports work out just over £840 with blue stuff pads, and there's a wait on the order, whilst D2 kits are already available from Japspeed for £810 delivered and with D2 pads.

Now I've heard these two kits are basically the same but re-badged...anyone have any experience with the D2 kit?

 

Did you try to find any second hand APs?

I had same dilema.Brembos but fitting new discs and pads sets you bak for 500 so i rather took almost new APs for 1k.

 

I have heard that the D2 calipers don't have dust seals so are prone to seizing whereas the K-sport have that additional protection which is why I haven 't considered the D2 option.

 

Even second hand still as you say - nearly £1k. K-Sport's will do me.

Now that I didn't know - cheers Jon - for the sake of £30 it's definitely worth going K-Sport then - cheers buddy

 

You have been told wrong , as both makes are the same , just badged up different , both kits are made in the same factory , neither calipers have dust seals , only the hydraulic seals on the pistons

Cheers Ian

 

Interesting, that narrows my search down to Brembos or Alcons then (unless some really cheap APs come up for sale)

 

The other question I suppose then is from those who have these brakes have they ever had the need to rebuild them because of damaged or corroding pistons resulting from the lack of dust seal

 

I have stripped and rebuilt a few sets , I haven't seen any corrosion on either the caliper bodies or pistons , but have seen sticky pistons due to dust and grime getting in the bores of the calipers

 

Which is something I didn't really want to have to encounter - especially as the car is a weekend toy so more likely to sit and seize up than if I used it daily

 

Interesting reading here Jon - looks to have been lifted from the German K-Sport site, basically saying it's impossible for the K-Sport caliper pistons to seize and rust due to the materials used - unfortunately I think it's a literal translation - jura pointed it out here:

K-Sport brake calipers have forged aluminum brake pistons with a Hardcoat coating. Other manufacturers use steel piston, this rust then with the aluminum caliper together trought humidity. Steel and aluminum do not get along, since a local cell develops (electrochemistry) and the base metal is oxidized. The material mating, the Eloxal of the calipers and the Hardcoat coating of the forging pistons prevent a fixed rusting. Further the pistons of other manufacturers are equipped with only one sealing ring, these seal the brake fluid outward. The K-Sport forging brake pistons are equipped with two seals. The internal sealing ring serves the brake fluid (the system keeps close) for sealing, the outside sealing ring prevents the penetration and a determining of dirt. This building method is most innovative and compact. Conventional dust shield seals are useless with K-Sport brake calipers. ..

....see what I mean - anyone good at German?

 

Haven't read the whole thread so this may be a redundant post but I paid under £1K (£850 ish iirc) for My APs from Ian (4 pot 330mms) which have proved to be an excellent set of fast rad/occasional track brakes.

 

recently purchased sti classic v6 around 350bhp, running standard brake setup at mo will be doing some track days in the summer was thinking of grabbing some discs/pads from Ian but not sure now after reading this thread any advice appreciated.

 

330 will be a must.....or Ians 335 conversion