does anyone know piston size of above? also whats the chances of them fitting th 306?

pipes look to be on the right side on this one

http://www.ebay.co.uk/itm/Brake-Master-Cylinder-Peugeot-Boxer-Delphi-LM21025-25-4mm-Bore-/160856733679?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3APeugeot|Model%3ABoxer&hash=item2573cef7ef

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Team Supercharged Gti-6™

use 406 mc, known to fit, is the right size.

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

same size, but they are different, thought you drive a diseasel

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

naah, wont be any longer as they're the same bore, all the ones I've seen are alloy and so much lighter.

whats wrong with your original one?

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Doubt it, bled the rear too?

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

i tried putting a gti6 mc on my 205 and it wouldn't sit flush against the servo due to the rod inside hitting the back, but i am told the 406 one does fit, so that must be the difference

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306 rallye reproduction decals (full sets/individual decals) | 306 b-pillar textured vinyl weatherstrips
306 slam panel esso stickers | 306 yellow / orange / pension fund red side door badges
gti6 inlet manifold badges | 306 rear boot badges (p2/p3)
winner of Extraction of toys from prams with outstanding vigour award 2009 [source: gti6 owners club]

I think you do end up with a longer pedal once you fit 4 pots, I've done some research on the net about this and most say if you increase piston size on your brakes you will end up with a longer pedal, to overcome this it is recommended (on the sites I have been on) to increase the size of the bore on your master cylinder,


For instance I have Midilite Wilwoods and I had a long pedal when I fitted them, on researching these calipers I found a lot of people using these ran a wilwood 25mm master cylinder as well,


I would like to know the difference between the 406 master cylinder and the Gti6 one as both are the same bore, unless it is the servo that's different, or is it the length of the bore inside the 406 master cylinder? longer perhaps to move more fluid? which results in a higher pedal?


I have played around with my Wilwood setup and have got it a lot better for feel and length of pedal, first was to change pads, Ferodo ds2500 are much better than the w**k wilwood smart pads, next I adjusted the length of the rod in the servo (which initially led to brakes all locked on ) and fitted a brand new Gti6 master cylinder which reduced the pedal travel somewhat, I then changed to grooved discs (bit personnel preference I know) which gave me better initial bite,


Unfortunately I then had the problem of the car "nosediving" on braking which I did not want as the back end was going light, more research and I fitted better pads to the back (Mintex 1144's) which seems to have solved the problem, car now stays flat when braking hard and all the discs are nice and clean which indicates all the pads are clamping nicely,


But still the pedal was longer than I liked, what made it worse was that on my Peugeot 505 diesel the pedal is nice and high so when using the 6 it just felt wrong, although the brakes where very good, I then read a thread on here about using just the vacuum pump with the servo and not using the vacuum out of the inlet manifold as well, controversial but I thought I'd give it a go and I thought if my 505 just use's a vacuum pump why can't the 6?,


So I have used a clamp on my hose coming out of the inlet manifold as an experiment to see the difference in pedal feel, the difference was amazing no more long pedal and feels just like the 505, I still have servo assistance through the pump and the brakes are awesome, so much better and loads of feel,


Now I know this is a bodge and do not recommend anyone copys me, but the servo getting vacuum from two different sources is definately giving me a longer pedal (which I know is really due to the 4 pots), that's why I was intrigued on the differences to the 406 master cylinder and if the 25.4mm bore one posted above would fit? (so I can disconnect my bodge)



Awaits to be flamed and to be told I'm gonna not stop one day , but thoughts anyone? Also to all the 4 pot people out there, what's your pedal travel and feel like?


Cheers Dave.. (serial bodger)

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Team Supercharged Gti-6™

Dave, you talk about a 25mm master cylinder, surely this isn't a direct fit?? maybe with motorsport

style pedal box though

What I meant was if people are using the same Midilite calipers as me and are recommended to be using a 25mm bore Wilwood master cylinder (albeit with a pedal box granted), then using 4 pots on a 306 would be better using a 25mm master cylinder as well maybe?


Thats why I was intrigued to whether or not the boxer master cylinder you inquired about would fit, just need someone to buy one and be a guinea pig really

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Team Supercharged Gti-6™

another thing i noticed was when we were bleeding the brakes, there is alot of flex in the bulkhead,

i would think if there was a way to reduce or even stop this then you'd notice a difference

i saw an accord type r at knockhill other week that had a very simple brace to reduce flex

this might be worth looking into maybe

how are you bleeding yours mate?

i changed mates fluid few weeks back, bled it old skool way 3 times over

fitted brembos and bled, 2 days later we checked for air and there wasnt a single bubble so i'm

confident theres no air in the system, plus he has braided lines throughout so should be

better than this surely

whats your issues btw?