fiestaturbo.com

[Jur]

Hi there,

The Fiesta (mk3) modding virus has hit Holland :-p
I've already modded my brakes 2 years ago, but now some fellow modders are wanting bigger brakes too.

No problems around the brakes themselves.. they go for either cossie setp or RS2000 setup.
But.. some questions arose around the Master brake cylinder..

Uprated or standard is the question..

Your opinions .. with arguments please (-:

[Jur]

For starters.. my opinion .. and argument.

Standard brakes .. 240mm ..
Standard master brake cylinder
pedal-travel (hypothetically) 2"
Weight of the MK3 914kg


Uprated brakes (RS2000) 260mm
Standard brake cylinder
pedal-travel (hypothetically) 2,5"
Weight of the car 914kg (might be 915 due to bigger brakes :-p )


Uprated brakes (Cos4x4) 278mm
Standard brake cylinder
pedal-travel (hypothetically) 3"
Weight of the car 914kg (might be 916 due to bigger brakes :-p )

Uprated brakes (RS2000) 260mm
uprated (rs2000) brake cylinder
pedal-travel (hypothetically) 2"
Weight of the car 914kg (might be 915 due to bigger brakes :-p )


Uprated brakes (cos4x4) 278mm
uprated (rs2000) brake cylinder
pedal-travel (hypothetically) 2,25"
Weight of the car 914kg (might be 916 due to bigger brakes :-p )


The cars weight stays nearly the same.. so the needed stopping power remains the same.
You can get locking brakes with JUST the 240mm brakes.... so the brake power itself is not the issue.
The problems (IMHO) lies with the endurance of the 240mm brakes (the time it cope under full braking power)
The 260mm brakes can cope longer.. and the 278mm can cope even longer.

the (maximum) braking power of the 260mm setup is greater than that of the 240mm .. and 278mm has even greater breaking power

So.. you don't have to push down the pedal as hard on a 260mm or 278mm to obtain the same brake-power as the 240mm.

If you use an uprated master brake cylinder with an uprated disc setup you have (nearly) the same pedal travel compared to the standard cylinder and standard disk setup. But also more chance of getting locking brakes.. because the "feel" is more restricted.

IMHO .. i have myself a standard brake cylinder on my cossie4x4 setup .. which gives me more pedal travel.. but if i press the pedal to the same 'depth' as the standard setup.. i get the same braking power (which hold better than the standard 240mm does :-p ) .. if i press the pedal furhter i even have more braking power. .. the pedal feel is greater that that of the uprated discs + uprated master cylinder..


So .. i go for standard due to better pedal feel .. without los of braking power.



greets

[Fezzy Turbo]

I dont see why the std master cylinder wont cope, what would be a good upgrade is to make sure the cylinder does NOT flex or move when the brake pedal is being pressed. A bracket to hold the master cylinder in place would increase braking a lot.

[Oranoco]

^ Good advice

Also worth changing to braided brake lines

[Jur]

with a LHD fiesta you don´t have as much ´flexing´ of the brake cylinder due to the direct connection to the brake servo.. in stead of thru a beam

[Pez]

Damn lucky Europeans with their decent brake set-ups!

[Mizka]

^Only postman pat drives on the "wrong" side around here

[Jur]

^Only postman pat drives on the "wrong" side around here

lol .. we drive on the Right side of the road.. :-p zo the left side.. is the wrong side..

the right side could never be the left side :-p

[Mizka]

Yeah no doubt

How about that master cyl swap from Esco RS2000? Is it a bolt-on swap or is there something more to it? How about big engine Sierras, are there any compatible/more jerk units?

Don't mind the servo cause I'm not gonna use it (rally car).

[Jur]

BTTT

[CarismaDave]

Contact XRSi mate. I'm sure he does uprated setups from an Escort MkV. You use the master cylinder and servo and they 'pretty much' fit straight on.

Dave

[xrsi]

Contact XRSi mate. I'm sure he does uprated setups from an Escort MkV. You use the master cylinder and servo and they 'pretty much' fit straight on.

Dave

they do fit straight on!

[scarlet_pimp_mobile]

Contact XRSi mate. I'm sure he does uprated setups from an Escort MkV. You use the master cylinder and servo and they 'pretty much' fit straight on.

Dave

they do fit straight on!

But are they better!?

[CRF]

A lot lot better, my pedal went spongy as hell and i had to stamp it to the floor before the brakes came on properly after fitting my ST170 front brakes and braided lines.

Swapped to the escort master cylinder and it solved the problem straight away. Don't have to press the pedal down half as far as before and the pedal feel is sooooooooo much better.

Highly recommended and relatively cheap mod

[Mikee_RS]

A lot lot better, my pedal went spongy as hell and i had to stamp it to the floor before the brakes came on properly after fitting my ST170 front brakes and braided lines.

yeah same as me mate

when i fitted my st170 brakes my brake pedal travells alot more then b4

does changing the master cylinder really sort this

[TRP]

Bigger diameter master will always reduce the pedal travel and give the brakes a more direct feel.

Does any one know what size wheels you have to use to clear the RS2000 and 4x4 callipers? Thanks

[fiestasi1800]

I have one of xrsi's modded escort master cylinders for sale if anyones interested

[Jur]

Bigger diameter master will always reduce the pedal travel and give the brakes a more direct feel.

Does any one know what size wheels you have to use to clear the RS2000 and 4x4 callipers? Thanks

15" minimum .. and watch out.. the Cosworth calliper might catch on the spokes

[Jur]

Hmmz..oke.. had some replies..


till now.. the intermediate results

when going ST170 (300mm) an upgrade is advised..
When goind cosworth 278mm .. it's your personal choice
when going rs2000 (260mm) it's not needed.

[Big Walker]

good advice on brakes here

Hey Jur when you getting your festure mate ?

[Jur]

Hey Jur when you getting your festure mate ?

???

[Big Walker]

woops LOL when are you getting your fiesta featured ?

[Jur]

woops LOL when are you getting your fiesta featured ?

FF have planned to visit the nurburg ring (which is open from 13th of april .. .. and i guess on their way back they will visit holland.. (sunday april 16th)

Hope they don't skip it like last year september.

Already picked some nice spots.. not gonna tell though..

[CRF]

does changing the master cylinder really sort this

YES, instantly better (well after filling up with fluid and bleeding the system anyway! )