Performance Brakes

Johnmk4 · Post by **Johnmk4** » Tue Mar 15, 2005 2:05 pm

whacked some Rotors on ebay if anyone wants to look at them/buy them...

Fronts - http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... RK:MESE:IT

Rears - http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... RK:MESE:IT

ICEYPOLO · Post by **ICEYPOLO** » Tue Mar 15, 2005 6:01 pm

underbraking on the rotor discs there is some extra 'turbulence' noise which i understand is the profiled edges disturbing the air and effectively cooling them... nothing mega loud!

i'll bear you in mind when i change discs John, got a fair few miles left!

scott

dubpolo · Post by **dubpolo** » Wed Mar 16, 2005 4:47 pm

ttaw2 wrote:IIRC When I looked into this, the guys I spoke to said that the only way to really improve the brakes was to swap out the master cylinder with a larger diameter, which enables you to exert more force on the pistons of the calliper. To go for a for a 6 pot and massive disks on the standard master cylinder wouldn't be very effective, as you're not adding any more force/pressure into the system to drive the bigger parts. I think the main issue with the polo might be finding the space to fit the bigger MC, but if you can do it. Will try to dig out the other VAG sizes, but off the top of my head the corrado vr6 ran a 22mm MC, that'd sort things out from the standard 19mm.

Tell me more! Iâ€™ve found larger brakes are very difficult to get hold of because the lack of clearance! I want some good stoppers!

Depresion · Post by **Depresion** » Sun Apr 03, 2005 2:42 pm

ttaw2 wrote:IIRC When I looked into this, the guys I spoke to said that the only way to really improve the brakes was to swap out the master cylinder with a larger diameter, which enables you to exert more force on the pistons of the calliper.

That's compleatly wrong, fiting a larger cylinder will change the feel of the brakes but not the efectiveness. The larger the dyamiter of the master cylinder the more fluid is displaced for a given distance pushed but conversly the harder you need to push the cylinder. Think of it like a leaver the smaller the master cylinder the longer your end of the leaver so the easyer it is to push but the further you have to travel.

http://science.howstuffworks.com/hydraulic1.htm

If you can lock the wheels (or have the ABS cut in) then it's the rubber that is letting down the system and the only reason to change the disks and pads to anything other than stock is to improve cooling and reduse fade.

Johnmk4 · Post by **Johnmk4** » Mon Apr 04, 2005 11:08 pm

ICEYPOLO wrote:underbraking on the rotor discs there is some extra 'turbulence' noise which i understand is the profiled edges disturbing the air and effectively cooling them... nothing mega loud!

i'll bear you in mind when i change discs John, got a fair few miles left!

scott

thats strange as the pads dont come into contact with the jagged parts, only the flat face like a normal disc... :S