difference between v6 sti four pot and brembos

[RallyTechNZ]

Just wondering whats the difference?? They are both 4 pot... Is it just a name thing again??

[boon]

No, the Brembo caliper is much larger.

Also the rotors - 4 pot uses a 294mm, Brembo is 326.

[loner]

Is the Brembo caliper alloy and therefore lighter?

[newsuba]

Alloy of steel and lead ?

They are a lot heavier than Subaru branded 4-pots.

Meaning more unsprung weight !

Reduced handling !

[Guest]

You can put 330mm disks on the Subaru 4pot calipers and this works well, I have done it. I do not use a brake booster either.

Does anyone know the piston sizes on both calipers for comparison.

[pedro]

Good tyres..Good pads...Good fluid = Good brakes

[Timmah]

 pedro said:

Good tyres..Good pads...Good fluid = Good brakes

+1

Blingbo's

Brownbo's

Brembro's

For a mainly street driven car, it's money better spent elsewhere. Also means you're not on the hunt for wheels that clear Brembo's.

[Guest]

 ballsrburning said:

You can put 330mm disks on the Subaru 4pot calipers and this works well, I have done it. I do not use a brake booster either.

Does anyone know the piston sizes on both calipers for comparison.

Need an adaptor+cert tho ae russ?

Pistons size shouldnt matter an ounce. I dont have sizes on file for brembo early pistons are 1 11/16, 2 1/4 and 2 3/16 not sure which one is 4 pot. More pressure per square inch with smaller pistons boon or koom can explain that one.

[Guest]

Rotor is heavier with brembos as well. Early 4 pot were alloy and cast werent they dependant as to what it was fitted too?

[gotasuby]

There a few incorrect statements here. Brembo callipers are lighter than 4 pots. But rotors are heavier. Also the brembos have bigger pistons which means more pressure not other way around. Opposite is true for the Master cylinder. Brembos are far better with heat. I used to get uneven pad deposit on my rotors with 4 pots when towing down Hills and even fade. So they can be of use on the street.

[DacerX]

I like my bremboes when i had them and they stop very very well. Id do them again on my RA if they came up at the right price. Good upgrade

[Guest]

Quote

yep adapter needed not sure about cert. Would you also need to cert Brembo setup if you put it on a gc8?

 

Quote

 

gotasuby said:

There a few incorrect statements here. Brembo callipers are lighter than 4 pots. But rotors are heavier. Also the brembos have bigger pistons which means more pressure not other way around. Opposite is true for the Master cylinder. Brembos are far better with heat. I used to get uneven pad deposit on my rotors with 4 pots when towing down Hills and even fade. So they can be of use on the street. .

 

 

 

That was also my understanding of the piston size too. Isn't pad deposit and brake fade down to the pad your using? Never had much issue with endless pads, definitely no brake fade when using on street or during races on track.

[hijacka]

 evowrx said:

Need an adaptor+cert tho ae russ?

Pistons size shouldnt matter an ounce. I dont have sizes on file for brembo early pistons are 1 11/16, 2 1/4 and 2 3/16 not sure which one is 4 pot. More pressure per square inch with smaller pistons boon or koom can explain that one.

They the same size pistons as a evo brembo, i've used genuine brembo seal kits for evos on both front and back of subby brembos, sorry can't remember the size but they are the same(same seals and same dust seal) so that might help someone looking to reseal theres as they can be had for little money, they run a bigger pad so they require a bigger piston for even pressure.. cast iron vs alloy.. I would image if you weighed the caliper and disk of brembo and subaru 4 pot front brakes the difference in weight would be very minimal between the 2.

[GC8E2DD]

gotasuby, how does a bigger piston on a caliper equate to greater pressure measured like for like with a smaller piston?

[gotasuby]

It is to a degree but sometimes disk is too small for the heat and can't shed it fast enough and you end up with fade as pads get too hot. Could use higher temp pads but then they loud, dusty and don't work as well from cold

[Guest]

Greater piston face area means less pressure per square in my head. Isnt that how button clutches work?

[Joker]

Thread Mump

 

only cos it popped up in the Mega FAQ thread 

 

 

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Source: http://www.brembo.com/en/company/news/50-special