987 brakes

2bobjones · Dec 3, 2018

Hi All
my 2006 2.7C has the four pot black calipers and 299mm discs.
when I bought car Last year it had brand new Pagid pads and discs on front and looks likes original rear disc and pads (only done 37k when i purchased)
the braking left a lot to be desired and not up to usual ‘more than enough’ Porsche braking I have experienced before..
so after good advise on new pads from you guys fitted Brembo sport hp2000 pads and much sharper response and no fade but still making horrible rumbling sound when hot. Same noise with as with old pads.
Did castle combe this summer and brake fine for 1-2 laps then get hot And rumble and started to shudder/warp a little so took It easy and only braked hard and late to minimise use..
now on road still rumble when hot/heavy use (even braking from motorway + speed down to roundabout) no issues with same braking on My modern Audi work car.
so need to sort out for next year but down want to throw good money after bad so what experience/advice on either:
1. New Brembo front discs or Sebro with the still very fresh brembo sport pads?
2. original Porsche discs and keep same pads
3. Look at upgrading front discs to second hand 987S big red calipers and new Brembo 330mm discs and new standard Brembo pads? Will the S brakes fit/attach? (I have 987s 18s wheels Factory fitted)
4. Fit 987 GT3 brake ducts (only £12 delivered and easy fit with a ramp!)

Ps I could of got a 987S for same money as mine but didn’t want potential engine issues with 3.4 engine.

any advice or experience welcome ??
thanks. the rest of the car drives perfectly.
Matt

Contraband · Dec 3, 2018

It could be warped discs. I would have fitted new front discs at the same time as the pads. They are not expensive from ECP, especially with all of the offers they have. I would also have changed the rear at the same time as if you think they are original, well, 37k they must be shot. I have changed my fronts and rears twice in 12k miles during my quest to improve the braking.

2bobjones · Dec 3, 2018

Contraband said:
It could be warped discs. I would have fitted new front discs at the same time as the pads. They are not expensive from ECP, especially with all of the offers they have. I would also have changed the rear at the same time as if you think they are original, well, 37k they must be shot. I have changed my fronts and rears twice in 12k miles during my quest to improve the braking.

Thanks Archie

yeah it may be the rears Are not efficient and putting more On the fronts...

Its weird that brand new pads and discs On front when I got it were not great braking... must be the Pagid discs?

What brand disc and pads you use? And you do track work?

cheers for input.

matt

Beaky · Dec 3, 2018

Have you also upgraded the brake oil and added braided hoses?

Do this before you consider pad and disk changes

2bobjones · Dec 3, 2018

Thanks beaky

i have had 2 brake fluid changes since with quality fluid from my Indy. Not sure what dot. But Porsche approved I’m sure as they don’t skimp on parts.

but not had braided hoses. It doesn’t seem like fade or long:soft pedal more graunch!?

I feel its the pagid discs as cheap euro parts fitted by so called specialist seller.. but he pagid cheap pads were like cheese and covered everything in dust after a few braking applications.

Not come across a brakes like it. Fine at low pressure, speed but not

happy under fast driving which is why I got The car....

jmaddox · Dec 4, 2018

Until recently I had a Cayman S and I was never really happy with the brakes despite fluid/lines replaced. Had a 993 before the cayman and that had excellent brakes. Back in a 911 again (997) now and the brakes are really superb.

2bobjones · Dec 5, 2018

Thanks. I heard some people say cayman discs are smaller Than 911s.. but you never heard car testers say the brakes lacked anything? So maybe need to be as new to really work as intended.

Motorhead · Dec 5, 2018

Chaps,

I've never had cause to complain about the brakes on my 987.2 CS running the standard Porsche set-up on the road and the occasional track-day.

Recently I replaced the rear pads with OEM Textar items (I believe that Sebro discs and Textar pads are identical to the Porsche branded items) with no detrimental effects. I was surprised that the rear pad wear was significantly greater than the front pads but have put this down to leaving PSM engaged on track.

Jeff

2bobjones · Dec 5, 2018

Thanks Jeff. I think it may be a non Porsche parts issue with the discs and new sebros all round would sort it. But mine is the base 2.7 so smaller discs and pads than S. they look so diddy compared with my work new A6 s Line tdi!

Motorhead · Dec 5, 2018

Unfortunately Matt I think you're probably going to have to bite the bullet and replace all the discs and pads. Don't forget the damping pads as they could be part of the problem too (brake squeal?). I'd also be inclined to check the suspension components thoroughly for wear since that would exacerbate the problem.

In terms of braking performance I would have thought that even with the 2.7's slightly smaller disc/pad set-up the braking performance should still be excellent; Porsche have a reputation for top-notch braking systems. I suppose you could consider an upgrade, but that would be very expensive. Hopefully your master cylinder and caliper pistons are all up-to-scratch, but it's difficult to check out the system without the appropriate equipment - maybe an MOT station could help you out if you can grab some time on their braking rig?

The fact that your Cayman's discs look small compared with the A6's is probably a reflection of the Audi's lardiness...hauling down an extra 300kg(?) from speed takes a significant amount of additional braking effort..!

Hope you get the problem sorted.

Jeff

2bobjones · Dec 5, 2018

Thanks Jeff. Agreed.

Every porsche I have ever driven has awesome powerful brakes.. I hate it when garages skimp on replacemenT parts as you Loose the Porsche perfection!

Will start saving...

Contraband · Dec 5, 2018

My 2.7 is running Brembo discs from ECP. I am now using HP2000 pads. I have fitted braided lines and use a higher temp brake fluid. I also fitted gt3 air scoops on the suspension arm to help cool things down.

If I were you, I’d fit new front discs and pads to start with. Discs can warp and cause vibration. Braided lines and fluid etc are just to help brake fade on track days.

Contraband · Dec 5, 2018

There is 50% off ECP until midnight today... 2 Brembo discs for £97!!

2bobjones · Dec 6, 2018

Thanks. I already have the HP2000 on front and only done 1-2k Max.

i was thinking of going full Brembo and pads and had those discs in my basket!

Thanks for input. Good to know others works fine with that set up.

j666gak · Dec 30, 2018

I have an 07' CS

Front / Rear & Discs / Pads are all Ferodo

Recently I went S/S brake hoses and GT3 brake master cylinder with GT3 brake ducts, definitely the biggest difference (night & day)

2bobjones · Dec 31, 2018

Thanks for info.

i got some GT3 ducts to fit and try will let you know how it Goes.

i heard GT3 master cyl and other parts can be fitted.

JMR · Dec 31, 2018

I have a 2.7 Boxster and when I bought it a couple of years ago, the previous owner had just fitted new front Pagid discs and pads.

Like they were fitted in Feb and I bought it end of March.

Brake performance in my opinion was poor, and they vibrated quite a lot particularly from high speed.

I took the car in to the garage and they said the brakes were warped, so they machined them true again.

Porsche changed the brake fluid for me too.

Not had a problem since.

I contacted the previous owner before doing anything but had hadn't kept his receipt for the brakes, he had also fitted them himself.

I've done about 10k on them now and theres plenty of pad/disc left and they are ok.

Best thing about them aesthetically is the centre of the rotor is painted grey/silver, so you don't get any horrible rusting on them when its been out in the wet.

Depending on what Brembos you buy, look to see if they have a coating on them too.

I've just put Brembo discs and pads on my Clio200 and the CR-V this year, and both sets of discs were painted and they look tidy after a few months/few thousand miles

2bobjones · Jan 1, 2019

Thanks mate. That’s good to know as same disc pads as my croc.

will have a play with them in the spring and see what sorts it.. suspect the pagid discs And corrode badly as occasional use only....

Buddy · Jan 1, 2019

From information garnered from specialists and earlier threads, Sebro were original suppliers of discs, Textar supplied the pads, I have had two 987S gen1 and 2 always having used Porsche pads and discs but intend to install new rear discs and pads this spring, pads will be Textar and the Discs Sebro. As Archie says Eurocarparts give good prices on the necessary parts.

A common fault with the discs and it has been on many Porsches is for the rear ( inboard ) face to rust, and I would expect that the rear discs at 37K miles would be at the end of their life, the inner pads may be at the end of their stroke since some pad manufacturers make them 2mm thinner than the fronts. Also the pad dampers may have separated from the pads allowing more float than normal.

Ray · Jan 1, 2019

Buddy said:
From information garnered from specialists and earlier threads, Sebro were original suppliers of discs, Textar supplied the pads, I have had two 987S gen1 and 2 always having used Porsche pads and discs but intend to install new rear discs and pads this spring, pads will be Textar and the Discs Sebro. As Archie says Eurocarparts give good prices on the necessary parts.

A common fault with the discs and it has been on many Porsches is for the rear ( inboard ) face to rust, and I would expect that the rear discs at 37K miles would be at the end of their life, the inner pads may be at the end of their stroke since some pad manufacturers make them 2mm thinner than the fronts. Also the pad dampers may have separated from the pads allowing more float than normal.

Concur. I went through several sets of Porsche discs (Rears) before the penny dropped. Rear disc judder at it's height could nearly pull the wheel from your grasp.

Ray