➜ advanced search
Add a more detailed reply Start a new thread in the Brakes forum
Home -> Forums -> Brakes -> Odd brake pedal feel

displaying posts 1 to 13 of 13

Author Subject: Odd brake pedal feel
Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

Status: Offline
Post #1
Hi Gents

After all my praising of the newly revitalized brake setup (HiSpec Billet 300's, Tarox Discs, DS2500's, Braided Hoses and Blue wotsit fluid) following my trackday last week i've started the car up and the first inch of brake pedal travel is totally floppy - i mean its dead travel.

If i then push harder it stops like a rocket as normal, however its not safe having such a dead zone! Have i just boiled the fluid? (i cant see any leaks etc) or could it be servo related or something?

Posted 27th Feb 2015 at 11:06
Profile
Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

Status: Offline
Post #2
Bled then and still feel off, annoyingly the one rear calliper nipple has snapped off so I guess it could be that?!
Posted 28th Feb 2015 at 19:23
Profile
devere

Senior User

Location: Saxtead

Registered: 16 Dec 2008

Posts: 810

Status: Offline
Post #3
I changed to a bigger master cylinder when I fitted my ap 4 pots. Removed any slack in the pedal that was brought on by the bigger calipers.
Posted 28th Feb 2015 at 19:31
Profile
Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

Status: Offline
Post #4
Interesting what did you change to?
Posted 28th Feb 2015 at 23:27
Profile
devere

Senior User

Location: Saxtead

Registered: 16 Dec 2008

Posts: 810

Status: Offline
Post #5
Master cylinder from a vw transporter. If I remember rightly it is 25.4mm compared to about 23mm the standard 6 master cylinder.

The only real difference fitment wise, is that the ports are on the opposite side, so the brake lines need extending.

Bearing in mind tho, I had no abs. So this was a 2 port cylinder rather than a 4.
Posted 28th Feb 2015 at 23:35
Profile
fatlapit

Seasoned Pro

Location: STOCKSFIELD

Registered: 02 Nov 2010

Posts: 3,040

Status: Offline
Post #6
strange i run aps and standard mc mines fine

if u replace all the copper with braided u can get a wierd pedal

________________________________________


Posted 1st Mar 2015 at 00:17
Profile
bigbadbowen

Seasoned Pro

Location: Winchester

Registered: 21 Nov 2003

Posts: 13,752

Status: Offline
Post #7
Chr1sch wrote:
Hi Gents

After all my praising of the newly revitalized brake setup (HiSpec Billet 300's, Tarox Discs, DS2500's, Braided Hoses and Blue wotsit fluid) following my trackday last week i've started the car up and the first inch of brake pedal travel is totally floppy - i mean its dead travel.

If i then push harder it stops like a rocket as normal, however its not safe having such a dead zone! Have i just boiled the fluid? (i cant see any leaks etc) or could it be servo related or something?



Sounds like air in the system to me Yes
Posted 1st Mar 2015 at 01:53
Profile
RetroPug

Seasoned Pro

Location: Leicestershire

Registered: 15 Jan 2013

Posts: 2,473

Status: Offline
Post #8
bigbadbowen wrote:
Chr1sch wrote:
Hi Gents

After all my praising of the newly revitalized brake setup (HiSpec Billet 300's, Tarox Discs, DS2500's, Braided Hoses and Blue wotsit fluid) following my trackday last week i've started the car up and the first inch of brake pedal travel is totally floppy - i mean its dead travel.

If i then push harder it stops like a rocket as normal, however its not safe having such a dead zone! Have i just boiled the fluid? (i cant see any leaks etc) or could it be servo related or something?



Sounds like air in the system to me Yes


Agreed, I'd try re-bleeding first.

________________________________________

61k miles Ph.1 Diablo '6 Project Thread
Posted 1st Mar 2015 at 07:23
Profile
armzsc6

Seasoned Pro

Location: Crowborough

Registered: 22 Mar 2008

Posts: 3,445

Status: Offline
Post #9
Yup, everyone moans about a poor pedal when fitting 4 pots.... I tend to moan about their poor bleeding lol mines spot on.

________________________________________

Black power baby! SUUUUUPERCHARGED Superman
Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p
12x 306's owned so far

Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist.
Pug planet / Citroen Lexia diagnostics / code reads available.
Posted 1st Mar 2015 at 09:02
Profile
Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

Status: Offline
Post #10
haha well I guess i need to get the rear calipers refurbished first and re-bleed before worrying much more....

It still stops on a dime when pushed hard
Posted 1st Mar 2015 at 12:42
Profile
devere

Senior User

Location: Saxtead

Registered: 16 Dec 2008

Posts: 810

Status: Offline
Post #11
I bled my 4 pots on a regular basis after events to refresh the fluid at the caliper. Always bled them correctly. Its just a fact I had a better pedal with the bigger master cylinder. Someone else also had an improvement also. Different calipers and different effects im sure. But some things work for one person and not for another.
Posted 1st Mar 2015 at 12:54
Profile
adam b

Seasoned Pro

Location: The Nam

Registered: 24 Jan 2006

Posts: 12,828

Status: Offline
Post #12
Depends on the piston size in the calipers Smile

________________________________________

Nothing to see here
Posted 1st Mar 2015 at 14:31
Profile
Niall

Seasoned Pro

Location: Epsom

Registered: 06 Jun 2012

Posts: 1,941

Status: Offline
Post #13
Yeah 4 pots can be a bit of a bas**rd to bleed. When i first fitted my Hispecs, i think it took 3 or 4 attempts before it felt spot on.
I found though with my Hispecs, i had a long pedal travel yet went to the brembos with a gti6 MC and its fine!
Posted 1st Mar 2015 at 17:09
Profile
Home -> Forums -> Brakes -> Odd brake pedal feel

All times are GMT. The time is now 22:09

The Peugeot GTi-6 & Rallye Owners Club - ©2024 all rights reserved.

Please Note: The views and opinions found herein are those of individuals, and not of The Peugeot 306 GTi-6 & Rallye Owners Club or any individuals involved.
No responsibility is taken or assumed for any comments or statements made on, or in relation to, this website. Please see our updated privacy policy.