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16v_paddy
14-07-2009, 02:24
Has anyone changed their master cylinder to compensate for the increase in pedal travel when using 4 pots?

Has it made any noticeable improvement or impairment to how the car stops?

Is it worth doing?
MAXIBOY
14-07-2009, 08:45
not really mate..but can use a larger bore laguna item iirc
AndyFielder
14-07-2009, 14:59
I had to top mine up with fluid, now im getting too the end of my pads life.
cliorod
15-07-2009, 23:58
On my ALCON calipers,with 2x 32mm dia.titanium pistons and 2x 34mm dia.titanium pistons stopping on a 305mm x 25mm rotor,I have two master cylinders (bias pedal box) one of .625" and one of .750"
Do not know idf this helps. :roll:
Evogone
16-07-2009, 00:06
On my ALCON calipers,with 2x 32mm dia.titanium pistons and 2x 34mm dia.titanium pistons stopping on a 305mm x 25mm rotor,I have two master cylinders (bias pedal box) one of .625" and one of .750"
Do not know idf this helps. :roll:

Im guessing you run std brakes on the rear ?
Evogone
16-07-2009, 00:07
Wonder what std master cylinders sizes are ...
MAXIBOY
16-07-2009, 00:54
iirc they are 20mm and others are 22mm.

rally cars ran a single master cylinder either 25mm iirc on four pots and 26mm on larger tarmac four pots..
speed
28-07-2009, 21:16
swiss runs a 23.8 master with his brembos,

the cylinder is std 406 coupe so i supose they work well together.

whats the piston size of brembos? compared to the 35.1 mm of wilwoods?
speed
29-07-2009, 20:13
http://cgi.ebay.fr/Maitre-cylindre-23-8mm-Clio-Williams-Clio-16S-16V-R19_W0QQitemZ140335456201QQcmdZViewItemQQptZFR_JG_ Auto_Tuning?hash=item20aca51fc9&_trksid=p3286.c0.m14

is it worth upgrading then? seller says original cylinder is 19mm.

is a laguna item a good comprimise at 22mm??

as next job on my list is sort the brakes i wanna know if its worth upgrading the mc :)
volymmannen
30-07-2009, 11:32
i have 19mm standard on my R5 gte ,clio williams 20.64 mm valver 19mm or 20,64mm the laguna I is 23.8mm
http://catalog.meca.se/ProductSheet.aspx?Article_ID=303080&CarReference_ID=8412&CategoryType_ID=1

http://catalog.meca.se/ProductSheet.aspx?Article_ID=230022&CarReference_ID=105&CategoryType_ID=1

if this is correct
speed
30-07-2009, 17:43
my mate told me all the pug 205 guys fit a 406 23.8mm mc when they upgrade brakes

looking at www.brakeparts.co.uk
they list the laguna1 at 23.8 with abs and 22.8 without abs.

so i think in going for a 22.8 mm as i dont have abs.

unless i can use a 23.8 with no abs?? whats the diffrence
volymmannen
30-07-2009, 17:55
the MC with Abs have 2 pipe connections and without 4, that's what i have seen, could be wrong..
volymmannen
30-07-2009, 17:59
there are 4 on the pictures but i have seen others with 2..
richy
30-07-2009, 18:03
the MC with Abs have 2 pipe connections and without 4, that's what i have seen, could be wrong..

thats correct, abs MC have 2 pipes which feed to the abs pump then off to each brake