dunx

iTrader: (3)

As title, had a pal's car in bits today and one inner "pot" on both front calipers was seized !

Why ?

dunx

Dirk Diggler 75

4 pots are terrible brakes in my opinion,they just dont cut the mustard even after a refurbishment.......

dunx

iTrader: (3)

Tish ! You just need to learn to corner faster

Dirk Diggler 75

Maybe, but there still poor........

dunx

iTrader: (3)

But if he buys my Brembos, he'll have to buy my std STI alloys and RE-070's as well !




dunx

prodriverules

iTrader: (52)

Are you selling some Brembo's Dunx?

Dirk Diggler 75

Brembo,proper brakes.......

Godspeed Brakes

iTrader: (259)

The chrome plating on the pistons is very thin , over the years of the pistons moving in the calipers the chrome wears off leaving the mild steel open to the elements and rusts , the rust build up tightens the gap between the piston and bore and seizes them.
Another problem with them is the top lip inside the bore also rusts , as the calipers are cast steel , there isn't a lot you can do about that , this seems to happen if the outer rubber dust seals have tears in them , or the cars are parked up and condensation gets in

This is why I started making stainless steel pistons , as these will never rust ,

I disagree , I have rallied Group N impreza's with the standard 4 pot calipers and 294mm discs with good competition pads , and the brakes have worked very well , I have a first overall in my car against a field of 100 cars , I wouldn't have done that without good brakes , its the pads that can make or break a braking system

matt-c

iTrader: (5)

Ian, does all the above apply to the Brembo calliper too?

Godspeed Brakes

iTrader: (259)

No , both the caliper bodies and the pistons are anodised aluminium , so you don't get the problems you see with the steel subaru calipers.
The only time we see sticky pistons are when you get a tear in the outer dust seal , and road grime and brake dust gets in and causes them to stick , or you get some corrosion under the pad plates which lifts them of the calipers and causes the pads to stick
Apart from that , they are fairly good

Cheers Ian

dunx

iTrader: (3)

Except for the threads stripping very easily ( retaining bolts )...

dunx

scooby1929

iTrader: (1)

Are the dust seals easy to change? I noticed the last time i changed the pads that the seals on the inside had cracked

beliblisk

iTrader: (16)

Yeah its easily doable.All you need is reseal kit that you get from local Subaru dealer which includes new seals,rubber and lubricant.

The biggest obstical is getting rubber fixed with steal rings.....almost lost my nerves couple times

MalcB

Can you replace the dust covers without removing the pistons. If so can anybody advise how please. Replaced pads yesterday with some of Ians Bluestuff NDX pads and nicked one of the covers. Also managed to "wring off" off a caliper mounting bolt. (is Japanese stuff really made of cheese) Was bit a barsteward to get out

beliblisk

iTrader: (16)

Well its really straight forward job....after you havee reseal kit in your hand(it costs 20 EUR for two calipers).

Taking pistons out doest really give you any more work,just some cleaning up and applying lubricant

Some pics of my calipers.

scooby1929

iTrader: (1)

I think pulling off a couple of dust boots and replacing them is a lot easier than pulling out pistions and bleeding the system again + plus getting pistons back in can be tricky

beliblisk

iTrader: (16)

Yes bleeding takes time but all other doesnt.75% of the time is needed for attaching dust seals with metal rings.

Getting pistons out,cleaned,lubricating and puting back in is really easy task.
I guess you should reocnsider "full" treatment for your calipers

MalcB

Thanks. You've done a good job with your calipers

MalcB

Thats what I was thinking. Got a kit ordered. Hopefully be here for the
weekend. Job for Friday me thinks......Nothing else happening is there?

dunx

iTrader: (3)

That's a long story... someone else chipped them working on the car.
So they are a little scuffy... BUT they come with PF discs and pads...

So cost me loads. Nobody is going to pay anything like what they are worth. So they are collecting dust with my original six speed box and diff...

One day I may build a nice Type-R

LoL

dunx

alcazar

iTrader: (2)

What 6-speed you got now Duncan?

scooby1929

iTrader: (1)

The dust seals for my hawk wrx dont have metal rings

Godspeed Brakes

iTrader: (259)

They should do , if not the wet and grime will get in and seize them , they should have a thin metal wire clip that holds the outer dust seal in place
Cheers Ian

beliblisk

iTrader: (16)

Metal rings are only thing holding dust protecting rubber to caliper....but it cant be seen until you actually almost pull piston out of the caliper hole.

Godspeed Brakes

iTrader: (259)

Hi
You can see the metal clips easily enough , they are the rings on the outer edge of the dust seals on these calipers I reconditioned



Cheers Ian

beliblisk

iTrader: (16)

Agreed,i must have mixed calipers up with my old legacy 2 pot ones

#68 rb5

iTrader: (1)

When you say lubrication on the pistons, what sort of lubricant do you recommend?

joey_turbo

iTrader: (26)

Usually its just the brake fluid you are using for the lubrication.

C8 DHC 04WRX

iTrader: (13)

The seal kits from subaru do actually come with a small pack of grease.

brendy76

iTrader: (6)

Bit of a thread revival this one, are the seal kits any more expensive from the dealers or would I be better buying them from the likes of scoobyworx etc? Also, £77, is this the going rate for a set of 8 SS pistons?