Whats Best AP4 pots OR Brembo's
#33
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AP's are far better than the standard Brembos. As previously said they are billet alloy and don't retain anywhere near as much heat as the Brembos do. They also have neat little tricks like pistons that are drilled so they don't transfer as much heat to the caliper and fluid. We run 308mm ones all round on a group A Escort Cosworth rally car and they are the dogs bollox, even on tarmac events when we should be running bigger ones. No fade, ever and that's on events like Otterburn and Jim Clark.
#34
AP's are far better than the standard Brembos. As previously said they are billet alloy and don't retain anywhere near as much heat as the Brembos do. They also have neat little tricks like pistons that are drilled so they don't transfer as much heat to the caliper and fluid. We run 308mm ones all round on a group A Escort Cosworth rally car and they are the dogs bollox, even on tarmac events when we should be running bigger ones. No fade, ever and that's on events like Otterburn and Jim Clark.
#35
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I'm only going to say that the AP set-up on mine has astonishing initial bite and feel, that's after upgrading from Brembo + PF !
dunx
P.S. Worth it yes, if you need it
dunx
P.S. Worth it yes, if you need it
#37
Wouldn't be surprised if Mark uses Carbotech XP's on his Cossie........ I've got some XP8's and they are really a bit much for driving around Carlisle LOL
Shaun
Shaun
#38
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AP's are far better than the standard Brembos. As previously said they are billet alloy and don't retain anywhere near as much heat as the Brembos do. They also have neat little tricks like pistons that are drilled so they don't transfer as much heat to the caliper and fluid. We run 308mm ones all round on a group A Escort Cosworth rally car and they are the dogs bollox, even on tarmac events when we should be running bigger ones. No fade, ever and that's on events like Otterburn and Jim Clark.
The Gold STi calipers are really not that heavy compared to a road AP 4 or 6 pot , its the Brembo discs that weigh a ton , with good pads fitted , there wouldn't be much in it performance wise of the STi calipers and 326mm discs and the AP 330mm 4 pot kit , with the pads being larger on the STi setup , the brembo's might just have the edge , where the AP's gain is in the weight of the 2 piece disc arrangement , but then you could shed some weight fitting 2 piece discs with the STi calipers.
If someone with an STi with the gold calipers fitted phoned and they were asking me for advise about whether to fit AP's instead , I would recommend a 2 piece disc and good pad and retain there brembo's. I would only recommend a caliper change if they were going for the AP 6 pots
If someone with a classic , was looking to fit either the STi setup or AP setup , and had to buy everything , then it would be a close call on which way to go , and based on what the customer was looking for , budget and use
Cheers Ian
#39
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Either DS3000 or Mintex F4R or F6R.
You're right Ian. They are a bit special
It depends what calipers your referring to , the road calipers are not billet , they are made in the same way the Brembo STi calipers are made , from forgings , if your looking at the AP billet calipers , with titanium pistons which will be drilled for less heatsink , then your talking thousands of pounds worth of calipers , these are a different kettle of fish and should not be compared against a road caliper.
Cheers Ian
Cheers Ian
#40
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I ran a classic with ap 4 pots in timeattack and they were very poor, over shot corners regularly. I also ran a classic in timeattack a year later with brembo and carbon discs with carbonne lorrane rc6 race pads and IMO there is no other brake package combo that I would want to try instead. With this set up I could regularly lock the fronts at 140+ with r888 tyres.
In short IMO it's all about choosing the disc and pad for the purpose.
As for calipers IMO your splitting hairs
In short IMO it's all about choosing the disc and pad for the purpose.
As for calipers IMO your splitting hairs
#44
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It would be good to get some real time testing done with the various configurations of caliper, disks and pads to see which indeed are the best. Some thing like 5 100-0 mph stops in a row and some lower speed stuff say from 40-0 mph. It's fine people saying "these are far superior to those" but where is the proof? If someone has just spent 1800 quid on a new brake setup of course they will say it's awesome.
#45
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I ran a classic with ap 4 pots in timeattack and they were very poor, over shot corners regularly. I also ran a classic in timeattack a year later with brembo and carbon discs with carbonne lorrane rc6 race pads and IMO there is no other brake package combo that I would want to try instead. With this set up I could regularly lock the fronts at 140+ with r888 tyres.
In short IMO it's all about choosing the disc and pad for the purpose.
As for calipers IMO your splitting hairs
In short IMO it's all about choosing the disc and pad for the purpose.
As for calipers IMO your splitting hairs
#46
The Gold STi calipers are really not that heavy compared to a road AP 4 or 6 pot , its the Brembo discs that weigh a ton , with good pads fitted , there wouldn't be much in it performance wise of the STi calipers and 326mm discs and the AP 330mm 4 pot kit , with the pads being larger on the STi setup , the brembo's might just have the edge , where the AP's gain is in the weight of the 2 piece disc arrangement , but then you could shed some weight fitting 2 piece discs with the STi
Cheers Ian
#51
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When i was buying brake upgrade for my classic did some math and realized its not much more to pay for new AP 4 pot 330 set up since if you buy STI calipers(350-400) and the add Ians two piece discs (356) and some decent pads (150-200) you end up not so far from AP kit........not to mention if you ahve to refurb sTI calipers.