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Discussion Starter #1
I'm just about to start uprating the brakes as the current ones seem to be shot at.


I'm thinking of :-

- changing the brake lines to steel braided ones and uprating the brake fluid;

- putting new grooved discs on (fnt).

Question is - I've seen a few posts relating to different fluids and wasn't sure, because of seals etc., if I actually can use a silicon based fluid - what's the consensus?

Secondly, what discs would everyone recommend?

I have had cross drill/grooved/vented discs on a previous car before and they ended up cracking on the rim due to the outer holes...so I'm not sure about getting cross drilled ones again?

I live in the country and do a lot of 'vigorous' driving so they need to be decent!

Thanks chaps!

Incidentally, what are the three pipes that run on the underside of the floor of the car on the drivers side and are kinda placed behind the front wheel.....'cos one of 'ems squashed?!? :eek:
 

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You`d be best off sticking with DOT4 or 5 and a set of FERODO DS2000 pads i think :confused: sumat like that anyway everyone on here is always raving about em :rolleyes:

As for Cross drilled ........................dunno mine`s still on standard discs and pad`s :rolleyes: They do the job so i`ll leave em as they are for now ;) and i don`t hang about :D

The 3 pipes ..................i think are the fuel line`s a feed,a return and the evapouration pipe :D

Have you got the Wheel`s sorted now???
 
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DOT 5 is silicon, DOT 4 or 5.1 is "normal".

I'm suspicious of silicon to be honest, it has a higher boiling point and doesn't absorb water but mixing it is not supposed to be a good idea as uneven pressure can be created. It will go in with normal apparantly but I would never do that!!!! It's not supposed tp be good for using in older cars where the rubber might not be 100% either....stick with 4 or 5.1 ;)

wrinx
 

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wrinx said:
DOT 5 is silicon, DOT 4 or 5.1 is "normal".
:rolleyes: :rolleyes: I new that :rolleyes: anyway what`s a .1 between friends :p :cheese: :cheese:

Btw Rochey there`s a place on the trading estate in Richmond sell Brembo performance disc`s .....................if there still there :rolleyes: ;) :D
 

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Im going with DOT5 silicon when I get round to overhauling my non existant when hot brakes, will report back, :D

braided pipes are also tempting me, but the bank says no! :rolleyes:
 
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alfajack said:
Im going with DOT5 silicon when I get round to overhauling my non existant when hot brakes, will report back, :D

braided pipes are also tempting me, but the bank says no! :rolleyes:
Try www.raldes.co.uk for the hoses...they quoted me £30 + vat for a car set.
 

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rochey said:
Try www.raldes.co.uk for the hoses...they quoted me £30 + vat for a car set.

Cheers,
£30 is not bad, Thought they were more in the £60+ region, which on top of discs and pads would be adding up a bit :rolleyes:

:)
 
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speed freak said:
You`d be best off sticking with DOT4 or 5 and a set of FERODO DS2000 pads i think :confused: sumat like that anyway everyone on here is always raving about em :rolleyes:

As for Cross drilled ........................dunno mine`s still on standard discs and pad`s :rolleyes: They do the job so i`ll leave em as they are for now ;) and i don`t hang about :D

The 3 pipes ..................i think are the fuel line`s a feed,a return and the evapouration pipe :D

Have you got the Wheel`s sorted now???
Cheers Speedy!

Wheels are sorted after a fashion....there is still a slight vibration, but if you saw how mauled and wrecked they are you would know it was them and not the car!! They look crap to be fair, but at least its drivable now - I note there are some decent ones on Ebay with my name on this week!!

I'm not impressed with this C&B motors in Blackburn - their service could have been much better and the guy reckons they are an Alfa specialist... :lol: :lol: :lol:

Btw, I also have a full set of studs now so i'll get yours back to you!

Ta la.
 

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Braided hoses are one of the best bang-per-buck mods that you can do to your brakes.

I don't have cross-drilled disks, but I've heard that they're prone to cracking, so your experience is not unique.
 

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Yes, the cross-drilled disks can crack under high temps. Not so good in the long-life department.
I remember reading that silicon is good, but requires a complete flush of the system to remove any DOT4.
maybe 5.1 is the way to go then?
 
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Braided hoses it is then! I'll stay away from the cross drilled ones - the others were on my 306 D Turbo that I had whilst driving down from Aberdeen every weekend on the A68....if anyone has ever driven that route, you'll know why the brakes were killed in about 3 months!!

I'm just about to order some std brake pads (as the wear indicators have come on) from....

https://www.sapmotorparts.com/shop/english/

.......would anyone know whether the brakes are likely to be Lucas or ATE?

Its a '95, 2.0 16V TS (WB)? They suggest...

Alfa Romeo 155 2.0 4/95-12/97 Brake Pad Set(4) With Wear Indicator BP969 £22.01 0.5 Lucas/Vented AR67204

That's a good price innit?
 

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Sounds good,

I'm after a full set (all 4 disk's and pads) GTV 2.0 TS 97'. Any ideas how much the cheapest might cost, also are disk and pads easy to fit? - Newbie

Cheers
 

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Like Wrinx, I'm suspicious of silicone based fluid. It has a higher degree of compressability, so it tends to make the brakes feel spongey. :eek:

Dot 5.1 will help, but the dry boiling point is typically less than 15 degrees higher than DOT4 fluid. DOT5.1 does have a higher wet boiling point (fluid absorbs water through time), and so will maintain its resistance to boil longer than DOT4. I change my brake and clutch fluid at least every year, so this is not an issue for me.

The braided hoses are good, but only if you feel the pedal is spongey. They help reduce the pedal travel between check, and heavy braking. The do not, however, reduce the actual travel of the pedal until the brakes are on.

Grooved discs are good as they help stop the gasses building up between the rotors and pads when brakes are hot. This is a cause of lengthend pedal travel. Crossdrilled discs do crack, but blind drilled (not drilled all the way through) give the best of both worlds (fade resistance and longevity). (eg Red Dot)

Do your brakes really get hot enough to warrant the drilled/ grooved discs? One other point is that these performance discs tend to have a softer disc material. This will give better pad bite, but they will wear faster and will tend to gain grooves as they wear. A really, really cheap disc will give nearly similar performance!

Lastly, look at friction coefficient of the pads. A pad with high friction should be fitted all round, otherwise the brake load valve should be adjusted to compensate. I fitted the (unpopular on Alfaowner) EBC Greenstuff to the front of my 155, and adjusted the valve. The result is really short stopping distances, good feel and the pads are less speed sensitive. A track day put hardly any wear in the pads and they still work very well from cold. The final benefit is that the brake dust is so reduced that the rear brakes now produce significatly more dust on the wheels than the front! :) I'm very pleased with the results, and although I have not tried other performance brands on the 155, I rate them highly.
 

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I've checked out my post- but I'm not sure what you mean mxer125 :rolleyes: I do know that I'm having PC probs right now though. I'm getting emails in double so I think this is what you meant.
I tried downloading a Panda anti virus program for the work PC (windows NT) and I think I clicked run when I only meant to extract the file- result data corruption. :( Will be fixed by my IT Consultant sister this weekend though :cool:
 

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Oh :confused: .
Do I get some sort of prize for that? Perhaps some goodies from the parts offered section? Free Squadra chip :D

I did have a fair bit of whisky last night. :p
 

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Have used Red Dot 6 groove discs and pads all round for over a year and they work really well they were e bit noisy at first but have improved. A bit wary of silicon fluid, unless you leave your car unused for long periods it is'nt really worth it. If you do though let the bottle settle for a couple of days and be really carefull when you fill up as this stuff aerates really easily and can be a real pain to bleed efficiently.

Phil
 

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Ive found that the best and most cost effective thing for brakes (on my Alfa Sprint) is to change the brake fluid at least once a year with castrol 5.1 Fluid. The pads are nothing special (cheap factor ones if I remember correctly) and it has the standard outboard vented discs from the 1.7 Sprints. The car will do at least 20 laps of Knockhill with absolutly no sign of fade. Even at Ingleston with repeated 90 down to 20 at the hairpin its fine. It never ceases to amaze me the amount of people who turn up at track days with fancy discs ( the obligatory red calipers!!!!!!!!!!) and complain about fade, yet when you look under the bonnet, the brake fluid is blacker than the engine oil
 

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Definately right about the calipers. If I remember my physics correctly silver is the most efficient colour to dissipate heat.

Phil
 
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