73T - C12 Big Brakes

Highfield · 06-07-2009, 10:50 AM

Just a teaser for now, but I have had these on the shelf in the garage for some time now, so whilst refitting the emergency brake and Elephant Racing Monoballs to the banana arms, I unwrapped and trial fitted (loose fitted with no regard for orientation etc.) my new brakes :-)

Ian

village idiot · village idiot's Garage

Oooooh sexy! What rotors are you using?

Cdnone1 · 06-07-2009, 08:26 PM

You had those just sitting on a shelf in your garage!?!?!?

Steve

Highfield · 06-07-2009, 10:03 PM

They are standard Carrera 3,2 rotors from Sebro. I bought the brakes during my refurb thus the on the shelf remark.

Talewinds · Talewinds's Garage

I saw those in an advert. for the first time last week, straight up sex.
If they'd ditch the "C12" logo and elegantly mill "PORSCHE" into them I couldn't get out my credit card fast enough.

Highfield · 06-08-2009, 10:34 PM

Quote:

Originally Posted by Talewinds

I saw those in an advert. for the first time last week, straight up sex.
If they'd ditch the "C12" logo and elegantly mill "PORSCHE" into them I couldn't get out my credit card fast enough.

These were sold to me at a good price, as they were the last of this 'style'. They are now available with logos in them, such as those sold by early911 and Tuthill.

I figured I could live with C12for a discount :-)

Ian

Talewinds · Talewinds's Garage

Awww damnit! Why'd you have to go ad tell me that!
Good info though, thanks!

kenikh · 08-07-2009, 10:44 PM

did you get them in the USA or from the UK? I am looking for a US reseller.

MrPerkles · MrPerkles's Garage

A guy on impactbumpers makes then Kenik

kenikh · 08-08-2009, 01:18 AM

Yah, found 'em on early911.co.uk - was trying to figure if they were cheaper locally but for the price at current currency conversion rates, they're a bloody fookin steal at twice the price. Can't buy turbo calipers at that price! When I get the email back, I'll have a set as quickly as they can send them.

cameron.arnott · 08-08-2009, 04:14 AM

Very nice Ian!

Bill Verburg · Bill Verburg's Garage

Quote:

Originally Posted by kenikh

Yah, found 'em on early911.co.uk - was trying to figure if they were cheaper locally but for the price at current currency conversion rates, they're a bloody fookin steal at twice the price. Can't buy turbo calipers at that price! When I get the email back, I'll have a set as quickly as they can send them.

there is no comparison between those calipers and 930s, you get what you pay for

Highfield · 08-09-2009, 01:02 AM

Bill

I cannot really judge the various merits, but a set of Turbo Calipers and discs here in the UK (say from VCI) is circa £3 - £4K, whereas these were just over £1K, so whilst they may not be as good (I have no idea), they were a financial decision as much as anything.

They have had great write-ups in the magazines, and I have spoken to Tuthills who fits them to their cars, and they found them excellent in their own right.

Perhaps someone with Turbo Brakes could do a back to back comparison for us ?

Ian

Highfield · 08-09-2009, 09:32 AM

Kenik

You have PM

Ian

spuggy · 08-09-2009, 12:09 PM

Quote:

Originally Posted by Highfield

Perhaps someone with Turbo Brakes could do a back to back comparison for us ?

Why? There's no need. You already stated they use the Carrera 24mm rotors.

The limit with stock brakes is the thermal capacity, especially of the rotors. Which the stock calipers are capable of overloading.

Based on a simplistic calculation of rotor volume, this setup has around 65% of the thermal capacity of the 930 rotor setup (282.5mm x 24mm, versus 302mm x 32mm). Just like the 3.2 - because it's the same rotor.

They may be an upgrade to the A and M calipers - but these aren't turbo brakes. If they generate more torque than the stock calipers, you also run the risk of overheating the 3.2 rotors and cracking them in heavy usage, e.g. on the track.

kenikh · 08-09-2009, 12:18 PM

Quote:

Originally Posted by spuggy

Why? There's no need. You already stated they use the Carrera 24mm rotors.

The limit with stock brakes is the thermal capacity, especially of the rotors. Which the stock calipers are capable of overloading.

Based on a simplistic calculation of rotor volume, this setup has around 65% of the thermal capacity of the 930 rotor setup (282.5mm x 24mm, versus 302mm x 32mm). Just like the 3.2 - because it's the same rotor.

They may be an upgrade to the A and M calipers - but these aren't turbo brakes. If they generate more torque than the stock calipers, you also run the risk of overheating the 3.2 rotors and cracking them in heavy usage, e.g. on the track.

They CAN use the stock rotors, but the real value is the 300mm rotor option. That is a HUGE upgrade for 15".

Bill, I am still waiting to hear back on some thoughts on why the C12s are inferior to the Turbo brakes...

Highfield · 01:33 PM

VCI want circa $1,850 plus I have to buy Turbo Calipers and Rotors etc. or $4,500 with new cakipers - and that is just for the Fronts, let alone the rears. I also have to pay shipping and taxes here in the UK.

I did consider this, but finances just were not there for these.

I had a set of refurbished 'S' front calipers and standard rear calipers, that I sold and pretty much put together a deal on these.

Chris (the supplier) offered to build the calipers to take the bigger custom rotor, but I could not justify the cost, after all, I still have the 140bhp engine - these brakes will be good for when I do manage to upgrade the motor, and they are lighter than Turbo brakes :-)

Yes, if I had the money I would have looked for turbo brakes as a nice period upgrade, but I don't, and they were not available at the time of looking.

I could have used stock Carrera calipers, but to be honest they would have cost me nearly as much, given the deal I got on these. They are the last pair with C12 rather than plain or custom engarved letters.

Ian

MrPerkles · MrPerkles's Garage

give the guy a brake

,your doing a great job on your car Ian and those brakes are a great hassle free swap

Steve@Rennsport · 08-09-2009, 01:42 PM

Quote:

Originally Posted by kenikh

They CAN use the stock rotors, but the real value is the 300mm rotor option. That is a HUGE upgrade for 15".

Bill, I am still waiting to hear back on some thoughts on why the C12s are inferior to the Turbo brakes...

The bottom line is that one cannot argue with economics as that basically defines everything we do so this is largely academic, however,...................Bill & Spuggy are dead on target here about the physics.

There is a huge difference in Thermal Dissipation capacity between Carrera rotors (even 300mm ones) and 930 rotors. While this may never be an issue for the majority of street driving, there is simply no comparison when at the track and thats where the differences become evident.

That said, with proper cooling, premium fluid (such as SRF), and good pads (not Hawks), you will likely be OK.

10zz964 · 08-09-2009, 08:42 PM

hi,
what size of MC are you going to use with these caliper?
cheers