Big brakes

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se7ensport
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Big brakes

Post by se7ensport »

Hi guys

I'm looking for some decent braking, I've currently got standard ford calipers, but since swapping to 15 inch wheels and sticky rubber they are nolonger up to the job. I'm running sierra uprights but will consider calipers and disks on merit and happily manufacture mounts to suit.



Cheers

Alex

stylussprinter
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Re: Big brakes

Post by stylussprinter »

se7ensport wrote:Hi guys

I'm looking for some decent braking, I've currently got standard ford calipers, but since swapping to 15 inch wheels and sticky rubber they are nolonger up to the job. I'm running sierra uprights but will consider calipers and disks on merit and happily manufacture mounts to suit.



Cheers

Alex
Willwood , Compbrake , Outlaw and AP of course BUT leave HI SPEC alone , is my advice.
I just love the Stylus but she keeps swallowing £££ !
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se7ensport
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Post by se7ensport »

Cheers Rob - I'd heard mixed reviews on Hi Spec.

Wilwoods are preference, I'm hoping to pick some up secondhand, although the 257mm powerlite kit from rallydesigns appeals at £220 + vat - seems pretty good I'm just trying to find a way round the VAT..

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Bikenuts
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Post by Bikenuts »

se7ensport wrote:Cheers Rob - I'd heard mixed reviews on Hi Spec.

Wilwoods are preference, I'm hoping to pick some up secondhand, although the 257mm powerlite kit from rallydesigns appeals at £220 + vat - seems pretty good I'm just trying to find a way round the VAT..
If you buy from them at a show you don't get charged vat - mind you it's a long walk from there stand to the car park at Stonleigh - ended up with arms like an ape :roll:

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Post by Schrodinger »

Bikenuts wrote:
se7ensport wrote:Cheers Rob - I'd heard mixed reviews on Hi Spec.

Wilwoods are preference, I'm hoping to pick some up secondhand, although the 257mm powerlite kit from rallydesigns appeals at £220 + vat - seems pretty good I'm just trying to find a way round the VAT..
If you buy from them at a show you don't get charged vat - mind you it's a long walk from there stand to the car park at Stonleigh - ended up with arms like an ape :roll:
Carry a rucksack :D
Keith
Aviemore

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Antnicuk
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Re: Big brakes

Post by Antnicuk »

can i ask whats wrong with Hi Spec, i have them but havent tried them yet.

Could you not just use cosworth fronts? very cheap and easy. I would look at making some thing up. I made the big brake kit for my last RX7 using M5 front discs and the new shape rx7 four pot callipers with spacers. I went from 275x22mm to 330 x30mm, once i sorted the bias and stuck some hawk pads the brakes were out of this word, they easily realed in the 460 bhp and out braked my mates 997 porka on the track without ABS which was a very nice feeling. The whole kit cost me less than £200. To go out and buy one was about a grand.

You obviously dont need that bigger brakes, but its very easy to make something fit, especially on the kit car where everything is that much smaller and the ford pattern is easy to buy for.

The FD RX7 calliper is a nice light 4 pot unit which will fit under a 15 inch wheel on a a 275 mm disc, you pick them up very cheap and race pads are easy and cheap to pick up, just a though if you fancy having a play.

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Help! just starting out

Edit: Getting the hang of it............. Slowly

Schrodinger
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Re: Big brakes

Post by Schrodinger »

I think you will find that Cossie calipers do not fit on a standard Sierra upright. Or at least the ones I tried didn't :(
Keith
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stylussprinter
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Re: Big brakes

Post by stylussprinter »

Antnicuk wrote:can i ask whats wrong with Hi Spec, i have them but havent tried them yet. Baby Bertha on this list will give you an engineer's oppinion having fitted some for a client. Basically hard to get braking even both sides and poor design the only plus appears to be cost. Matt Downes has them but not chuffed with them. You'll never get a problem with outlaw / raceleda(same thing) or willwood .All 3 can now be had in M16 format --- no brackets to fit/shim or FLEX :roll:

Could you not just use cosworth fronts? very cheap and easy. I would look at making some thing up. I made the big brake kit for my last RX7 using M5 front discs and the new shape rx7 four pot callipers with spacers. I went from 275x22mm to 330 x30mm, once i sorted the bias and stuck some hawk pads the brakes were out of this word, they easily realed in the 460 bhp and out braked my mates 997 porka on the track without ABS which was a very nice feeling. The whole kit cost me less than £200. To go out and buy one was about a grand.

You obviously dont need that bigger brakes, but its very easy to make something fit, especially on the kit car where everything is that much smaller and the ford pattern is easy to buy for.

The FD RX7 calliper is a nice light 4 pot unit which will fit under a 15 inch wheel on a a 275 mm disc, you pick them up very cheap and race pads are easy and cheap to pick up, just a though if you fancy having a play.
I just love the Stylus but she keeps swallowing £££ !
Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.

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se7ensport
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Re: Big brakes

Post by se7ensport »

Antnicuk wrote:can i ask whats wrong with Hi Spec, i have them but havent tried them yet.

Could you not just use cosworth fronts? very cheap and easy. I would look at making some thing up. I made the big brake kit for my last RX7 using M5 front discs and the new shape rx7 four pot callipers with spacers. I went from 275x22mm to 330 x30mm, once i sorted the bias and stuck some hawk pads the brakes were out of this word, they easily realed in the 460 bhp and out braked my mates 997 porka on the track without ABS which was a very nice feeling. The whole kit cost me less than £200. To go out and buy one was about a grand.

You obviously dont need that bigger brakes, but its very easy to make something fit, especially on the kit car where everything is that much smaller and the ford pattern is easy to buy for.

The FD RX7 calliper is a nice light 4 pot unit which will fit under a 15 inch wheel on a a 275 mm disc, you pick them up very cheap and race pads are easy and cheap to pick up, just a though if you fancy having a play.
I am tempted to make up a set - I'd been looking at bike radial calipers, however, I'll look into RX7 calipers and see what kind of price they go for.

I'd looked into cossie stuff, but they don't bolt straight on, they are not light and if I'm going to go to the effort of making stuff fit I'd rather go for quality 4-pots.


Cheers

Alex

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Werner Van Loock
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Re: Big brakes

Post by Werner Van Loock »

Don't go bike calipers, they're not designed to stop a 700kg car.

In the dutch kitcarclub there's one that didi it on a bec and they caught on fire.
http://www.7rcb.be http://www.kitcarclub.nl

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Re: Big brakes

Post by stylussprinter »

I've only ever had 247mm disc's . Vented to start with then solids once I realised vented was overkill. You need good stoppers on track for quick laps and my Willwood then Raceleda 4 pots plus Hawk Black pads are an awesome combination . My solids were originally 9mm , slotted and drilled but overheated and cracked so now have standard 12mm solids without drilling or slots :roll:
I just love the Stylus but she keeps swallowing £££ !
Alfa Red 159 2.4 jtdm ti 260bhp 365lbft / BilsteinB12 + Adjustable Powerflex camber/castor bushes. Red STYLUS 2lt zetec 231bhp 185lbft Dunnell . RED 1972 Alfa 2lt GTAm replica 170bhp.

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se7ensport
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Re: Big brakes

Post by se7ensport »

I've got two options at the moment - either solid 257mm from rally designs or I've found a set of front and rears from a Radical that are 240mm vented, the rears have no handbrake option though....


Does anyone have a discount card for rallydesign?

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se7ensport
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Re: Big brakes

Post by se7ensport »

anyone interested in a group buy for a new wilwood brake kit, if there is interest I'll investigate a price.



Alex

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Antnicuk
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Re: Big brakes

Post by Antnicuk »

stylussprinter wrote:I've only ever had 247mm disc's . Vented to start with then solids once I realised vented was overkill. You need good stoppers on track for quick laps and my Willwood then Raceleda 4 pots plus Hawk Black pads are an awesome combination . My solids were originally 9mm , slotted and drilled but overheated and cracked so now have standard 12mm solids without drilling or slots :roll:


Surely vented wont give more braking though, just more cooling. Or do you mean you went solid to reduce weight as you didnt need the vented?

I had hawk pads on my RX7 and they were fatasic, dusty but the stopping power was awsome and they never faded. Even at 150 mph plus stops at the ring.

The FD callipers in the picture above can be picked up for about 30 - 50 quid, they are alloy 4 pots and will take a 22 mm disc.
Help! just starting out

Edit: Getting the hang of it............. Slowly

Schrodinger
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Re: Big brakes

Post by Schrodinger »

Antnicuk wrote:
stylussprinter wrote:I've only ever had 247mm disc's . Vented to start with then solids once I realised vented was overkill. You need good stoppers on track for quick laps and my Willwood then Raceleda 4 pots plus Hawk Black pads are an awesome combination . My solids were originally 9mm , slotted and drilled but overheated and cracked so now have standard 12mm solids without drilling or slots :roll:


Surely vented wont give more braking though, just more cooling. Or do you mean you went solid to reduce weight as you didnt need the vented?

I had hawk pads on my RX7 and they were fatasic, dusty but the stopping power was awsome and they never faded. Even at 150 mph plus stops at the ring.

The FD callipers in the picture above can be picked up for about 30 - 50 quid, they are alloy 4 pots and will take a 22 mm disc.
I think with a car as light as the stylus it takes a lot to get any heat into the brakes but 9mm disks on a track would not be up to the job if you are pushing hard.
On my Tiger Cat I had the standard Sierra Vented disks and green stuff pads and they worked fine.
Keith
Aviemore

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