You can't fit a bigger master cylinder from the vauxhall familey the corsa set up is quite unique, iv heard of people modifying a late 90's mondeo one to fit other than that ull be looking at a pedal box if it's for track use

ive got same problem with mine v6 calipers discs and cant get brakes to bleed poperly i think the master sylinder is at fault but even my last corsa had spongy brakes , the pedal travels alot more as the master sylinder struggle sputting all the fluid to the piston,. someone said to use the v6 master cylinder but i dont know if its a straight forward fit

I was thinking maybe putting up with it for the time being, the car will need buckets of testing, running in and mapping so maybe I can use that till I afford 4-pots or something.

on my corsa ive got calibra turbo fronts and cavalier v6 rears with bfgoodrich hoses and dot 5.1 brake fluid and have a great pedal and even after a kicking ive not felt any faid

very true or start looking toward wilwood or tardox

I am thinking 350bhp and heavy track use might overwhelm them lol

but that might be enough mate as i was on about v6 brakes but everyone said turbo calipers lol or stick with 2 litres

Turbo pistons are only marginally smaller though, anyone else got any insight?

i didnt think there wa any differnece in them possibly might be but the v6 set up aint all that great on corsa servos and masters, best bet is cav turbo calipers smaller pistons

Although in my application this isn't for a Corsa-B the servo and master cylinder are, I am using this setup in my Nova. I am all set to fit Calibra V6 front calipers but I read on MIG that certain master cylinders are not up to the job is pumping enough fluid to the much larger caliper pistons and I am limited to the 256mm setup.

The servo and master cylinder are from a late 1.2 Corsa.

Is this true? If so would fitting a GSi master cylinder be any bigger and do the job??