View Full Version : Brake Master Cylinder & 4 pots
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?
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.
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:
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 ?
Wonder what std master cylinders sizes are ...
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..
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?
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
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..
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
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