996 GT3 6pots

[europeanme]

The 997 have even better 6 pot calipers, that have a built in brace to stop caliper flex



They cost a pot of gold though

those look like 4 pots to me..... i could be wrong....

[GazzaG60]

to my knowledge the ceramic 6 pot hasn't changes.

it is in principle the same as a q7. however the q7 has a cast carrier built in and different pistons from the ones i have seen.

maybe due to its non ceramic nature. somebody on ebay waqs selling new calipers for 400 quid a set at one time for q7

[GazzaG60]

that is a 4 pot im sure. its not as long as the 6 pot...and it only has 4 pots.

[Jamo]

Wrong pic, I'll find the correct one

[GazzaG60]

lol.

i knew you were trying to catch us out

[smiler]

so the porsche cayenne/Q7/Touareg 6 pot calipers are just the same as the 996GT3 carbon ceramic ones??? i did not knew it

No they are not the same...

[JP]

I'm in the process of fitting the cayenne radially mounted 6 pots which bolt straight up to the S6 hubs and use a stock of the shelf 330 disc. They just squeeze inside the stock Audi 8x17's.

[GazzaG60]

the cayenne q8 fit easy on the s2. not so on the s2.

like smiler says it is a different caliper though. same size though

[Bram]

I am not sure why you would want 6 or 8 pots, but isn't it more effective (braking-wise) to have the 4 pot GT3 996 calipers with 360mm discs, like I have, instead of 6 pots with 330mm discs? Is there a way to calculate the braking power for both setups, or is it only comparable on a brake stand?

[JP]

I am not sure why you would want 6 or 8 pots, but isn't it more effective (braking-wise) to have the 4 pot GT3 996 calipers with 360mm discs, like I have, instead of 6 pots with 330mm discs? Is there a way to calculate the braking power for both setups, or is it only comparable on a brake stand?

^^^^ Yes.

Brakes work in two main ways.

Leverage giving ability to stop and clamping force giving ability to stop.

The leverage is improved by fitting a larger disc, much like undoing a bolt first try with a 1/4" drive then with a longer 3/8" drive and finally with a longer 1/2". The longer the lever the easier it is to undo a tight bolt. The same the bigger the diameter of a disc the more leverage you have to stop the wheel from turning.

The second factor is the ability for the calliper to clamp the disc this is effected by the compound of the pads and the overal dimension of them. The bigger the dimension of the pad the more clamping force you can apply on the disc. To make sure you then have even contact surface between the disc and the pad the pistons of the calliper need to distribute the force as evenly as possible so the more pistons that are across a big pad the more even the clamping force to the disc and the more strength you have to stop the wheel.

The end result being that a bigger disc with 4 pot calliper has the ability to stop faster than a smaller disc with a 6 pot calliper. However the smaller disc with the 6 pot calliper is less susceptible to brake fade due to better clamping force meaning less slip and less heat being generated so it is potentially more suited to track days. In an ideal world you would have the bigger disc with the 6 pot calliper

[Bram]

^^^^ Yes.

Brakes work in two main ways.

Leverage giving ability to stop and clamping force giving ability to stop.

The leverage is improved by fitting a larger disc, much like undoing a bolt first try with a 1/4" drive then with a longer 3/8" drive and finally with a longer 1/2". The longer the lever the easier it is to undo a tight bolt. The same the bigger the diameter of a disc the more leverage you have to stop the wheel from turning.

The second factor is the ability for the calliper to clamp the disc this is effected by the compound of the pads and the overal dimension of them. The bigger the dimension of the pad the more clamping force you can apply on the disc. To make sure you then have even contact surface between the disc and the pad the pistons of the calliper need to distribute the force as evenly as possible so the more pistons that are across a big pad the more even the clamping force to the disc and the more strength you have to stop the wheel.

The end result being that a bigger disc with 4 pot calliper has the ability to stop faster than a smaller disc with a 6 pot calliper. However the smaller disc with the 6 pot calliper is less susceptible to brake fade due to better clamping force meaning less slip and less heat being generated so it is potentially more suited to track days. In an ideal world you would have the bigger disc with the 6 pot calliper

Good input. Makes sense

Good that my Avant was not made for track use

[GazzaG60]

you could always say bigger is better when flat out but these are road cars with road tyres, an important part thats been overlooked here. as is how hard you can push the pedal.

for the road compromise is needed or you would be shunting the car in front.

the other thing is wheel sizes to fit these things under.

i went 6 pots as i got them for a good price. i also know that 997 c2s 4 pots are not as good. thats on a porsche too.

[Rocco]

the setup is.

gt2 6 pot.
993 tt discs, custom bells,
pads of choice.
custom brackets.

they clear a 17" wheel by a fraction. highly recommend 18"

great brakes.

up for this nice thread

Gary,do you know if a 330/335/340/345/350 mm rotors sizes would fit under 17" rims with your GT2 6 pot ceramic calipers??

these calipers can be used with 34mm thick discs true??

[quattrofrank]

I have them on mu Audi only I dont have a handbrake yet but I'm working on it



Porsche Cayenne 6 pot callipers and 4 pot rear
345x32 front disc from a Golf mark V R32
Rear 310x28 i think Golf mark V R32

Have anyone else done this? I guess its a straight bolt on except for the brackets wich I need to get custom made? Any other brake disc wich I can use? I belive the cayenne rear brake caliper can use up to 330*28mm disc`s