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  #1  
Old 09-05-2010, 07:34 PM
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Default Big brakes

Guys,

Interested in knowing some theory from the experts. The more pots a brake caliper has this just means the more even pressure on the brake pad asfaik?? Normally a 6-8 pot calliper is larger than say a 4 pot calliper??

Now i have 4 pot sti brembo brakes and wondering if going to a larger pot calliper if there is a benefit to this??

Or is it the brake pads that will dictate how well the car pulls up??

Also is a say a racing calliper system like AP racing STI 4 pots or WRC callipers better than say a street calliper such as a brembo STI 6 pot (off ra-r)??
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Old 09-05-2010, 07:37 PM
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Bigger ( more calipers ) has more pressure on the brake pad to the discs, hence better stopping performance. Stay with the 4 pot STi brembo and get better pads =)
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Old 09-05-2010, 07:39 PM
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^^^^

So im assuming then, you might be able to stop better with bigger callipers but then you are limited to how good tyres you have in addition??
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Old 09-05-2010, 07:40 PM
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Yep, tyres will play a major role here. If you can't grip the road it doesnt matter how big your brakes are.
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Old 09-05-2010, 07:41 PM
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regardless of the pots, its the distribution of force over a larger contact area
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Old 09-05-2010, 07:43 PM
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YES! Everything must be thorough
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Old 09-05-2010, 07:58 PM
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Quote:
Originally Posted by tuna View Post
regardless of the pots, its the distribution of force over a larger contact area
Ah yes that what i thought. So when upgrading the fronts should you also upgrade the rears? I knwo the majority of the braking force is from the fronts but if you dont do the rears would you stuff up the brake bias??
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Old 09-05-2010, 08:04 PM
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Brake efficiency is all about heat Tino. There must be a fine balance- too cold, pad material may not work, too hot... nothing will work and wear and tear will go through the roof!

As Stace suggests- friction effiency is what more pots/ larger brakes attempt to address. Distributing the job accross several points, over a wider distance in theory attempts to keep heat under control etc. Not all "big brake" packages do this efficiently though... sometimes a smaller quality setup can out-do many of the big bling crap. (Eg- a larger inneficient item can take much longer to shed stored heat etc).
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Old 09-05-2010, 08:09 PM
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Quote:
Originally Posted by subarooboy View Post
Brake efficiency is all about heat Tino. There must be a fine balance- too cold, pad material may not work, too hot... nothing will work and wear and tear will go through the roof!

As Stace suggests- friction effiency is what more pots/ larger brakes attempt to address. Distributing the job accross several points, over a wider distance in theory attempts to keep heat under control etc. Not all "big brake" packages do this efficiently though... sometimes a smaller quality setup can out-do many of the big bling crap. (Eg- a larger inneficient item can take much longer to shed stored heat etc).
cool it all makes sense. So will a race calliper i.e like for example a AP racing GrpN 4 pot out perform say a street brembo 6 pot calliper?

Or is it the mechanism that will be the deciding factor the same between a race APracing caliper and a street APracing caliper as a direct comparison?
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Old 09-05-2010, 08:12 PM
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Difference might be weight.
The race ones are forged ali where as the more street orientated ones are cast.
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