Were they single pot escort / Sierra 4x4 cosworth or 2wd Sierra
4pot cosworth calipers?
I have the 4x4 single pot front with Peugeot single pot rears on
my saloon ( this is with the current escort MC)
On Mon, 25 Mar 2019, 13:13 'Robert Craig' via Quantum Owners
Group, <quantumowners@googlegroups.com
<mailto:quantumowners@googlegroups.com>> wrote:
Hi Martin,
Not sure about the areas but the Cosworth calipers are
certainly bigger than the original XR2 ones were and worked
ok. The Hispec 4 pots are smaller diameter but spread over a
larger pad area to give more even pressure.
Bob
Sent from my iPad
> On 24 Mar 2019, at 22:53, Susan and Martin Scott
<susanandmar...@corringham99.free-online.co.uk
<mailto:susanandmar...@corringham99.free-online.co.uk>> wrote:
>
> Ignoring the fluid change..... What is the combined area
of the pistons compared to the previous single ones? I may
know an alternative, but it depends what the requirements
are. It could be that a larger bore master cylinder is
needed, but some dimensions will be needed to calculate.
> Martin
> ----- Original Message ----- From: "'Bob Craig' via
Quantum Owners Group" <quantumowners@googlegroups.com
<mailto:quantumowners@googlegroups.com>>
> To: "Quantum Owners Group" <quantumowners@googlegroups.com
<mailto:quantumowners@googlegroups.com>>
> Sent: Sunday, March 24, 2019 5:39 PM
> Subject: [Quantum Owners] Brake master cylinder conversions
>
>
> After upgrading my already upgraded 2+2 brakes from
Cosworth single piston calipers and huge discs to a much
lighter Hispec billet 4 pot system, I can't get a decent
brake pedal and have next to no braking force. I purged all
the old brake fluid and refilled with dot5.1, pressure bled
everything. I'm thinking that my master cylinder may be
faulty and just looking at options. I know the later type
cylinder is a bit like rocking horse poo these days and if
going to the extent of changing, I'd rather have a more
performance focused set up.
> Has anyone fitted the Burton Power bias assembly. It does
away with the standard servo and master cylinder.
>
>
https://www.burtonpower.com/adjustable-bias-brake-assy-ford-fiesta-mk1-mk2-mk3-brk061.html
>
> Bob
>
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