PORSCHE 911 GT3 (997): BREMBO 2-PIECE TYPE III DISCS

PORSCHE 911 GT3 & TURBO (997): BREMBO 2-PIECE TYPE III DISCS

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Porsche’s 911 (997) GT3 and Turbo are platforms engineered specifically for high performance use, which also have unique brake demands. (Example: 450 horsepower for a 3.8 GT3 RS and 500 horsepower for a 4.0 GT3 RS)

The Brembo OE brakes equipped on the specific Porsche 997 GT3 & Turbo models are a sophisticated design for an OE application. The Porsche Brembo OE brakes utilize 6-piston aluminum fixed monobloc calipers front and 4-piston aluminum fixed monobloc calipers rear. The brake discs are heavy duty 380 x 34 mm ventilated front and 350 x 28 mm rear brake discs. While 997 GT3 and Turbo brakes physically look similar, their piston configuration and brake balance are tuned for the specific chassis. The GT3 places more of the brake balance towards the rear, while the Turbo is more demanding on the front brakes due to the AWD (All Wheel Drive) system and electronic aids.

The Porsche 911 GT3 OE brakes use a wide annulus (radial depth) front and rear for maximum pad swept area (this makes a significant difference in thermal capacity and pad life). The OE pads are also 18.5 mm thick front and rear which is comparable to most high performance aftermarket calipers.

There are certain limitations with the OE components on any high performance application as they are designed specifically for the car manufacturers to their requirements of comfort, wear rates in various road environments, cost, and serviceability.

As the braking system’s primary function is to dissipate heat, Brembo uses purpose-designed discs in order to increase the fade resistance and thermal capacity of the system. These Brembo Racing discs are directionally ventilated for enhanced cooling and slotted for better performance and continuously refreshing the pad surface. Brembo 2-piece discs are made up of a proprietary advanced cast-iron alloy which offers an exceptional coefficient of friction and resistance to thermal shock and fatigue.

The same Brembo Racing discs trusted every weekend in professional motorsports are also utilized in the Brembo Performance program (GT, GT-R, & Race Systems).

997 GT3 with Brembo Racing Type III rear discs. Installed by BBi Autosport. Photo Credit : Jerry Truong / BBi

997 GT3 with Brembo Racing Type III rear discs. Installed by BBi Autosport. Photo Credit : Jerry Truong / BBi

BENEFITS OF BREMBO 2-PIECE DISC UPGRADES:

  • OEM INTEGRATION: Brembo 2-piece disc upgrades are designed to work seamlessly with the OE calipers and systems (manufactured by Brembo for Porsche). This guarantees the utmost in safety and seamless fitment.
  • LIGHTWEIGHT: Disc assemblies include an outer iron disc with aluminum bell/hat and provide decreased corner weights to improve vehicle dynamics including handling, acceleration, and braking.
  • TYPE III SLOT PATTERN: Extensively used in professional motorsports, the type III slot pattern offers a high initial response with excellent release characteristics.
  • HIGH THERMAL CAPACITY: Greatly improved thermal capacity and heat management over OE discs and other aftermarket discs in the market. This also improves braking performance and allows for greater longevity of the components.
  • FRICTION MATERIALS: Everything we learn by supporting top professional racing teams throughout the world goes into selecting the best brake pad options for all levels of street, track and racing use.
Falken 997 GT3R at 2015 Nurburgring 24 equipped with Type III Brembo discs. Photo Credit : Falken Motorsports

Falken 997 GT3R at 2015 Nurburgring 24 equipped with Type III Brembo discs. Photo Credit : Falken Motorsports

PACKAGES INCLUDE:

  1. Outer Brembo type III discs (qty 2).
  2. 6061 T6 aluminum (machined from billet) hard anodized bell/hat.
  3. Complete Brembo disc hardware (D-type bobbin) w/anti-rattle springs (full floating option available upon request)
  4. Some systems include choice of street or race pads.

BREMBO 911 GT3 & TURBO (997) 2-PIECE DISC OPTIONS:

FRONT BREMBO 2-PIECE DISC OPTIONS: 911 GT3 OE IRON OR PCCB EQUIPPED

MSRP COMPLETE AXLE SET W/PADS: $2,495.00*
*FRONT SYSTEM INCLUDES PADS

911 GT3 Front disc specifications:

–          380 x 34 disc – Lightweight
–          Type III face type
–          20 mm air-gap (wide air-gap for overall brake disc weight reduction)
–          72 vane ventilation
–          21 lbs – disc ring
–          23 lbs – complete 2-piece disc assembly
–          Compatible with 911 GT3 and Turbo (997) Models

911 GT3 Front “High Thermal” disc specifications:

–          380 x 34 disc – High Thermal
–          Type III or Type V “Endurance” face type available.
–          17 mm air-gap (narrow air-gap for the brake disc to have extra thermal capacity and durability under higher brake demand conditions)
–          72 vane ventilation
–          23 lbs – disc ring
–          24.5 lbs – complete 2-piece disc assembly
–          Compatible with 911 GT3 and Turbo (997) Models

REAR BREMBO 2-PIECE DISC OPTIONS: 911 GT3 OE IRON or PCCB EQUIPPED

MSRP COMPLETE AXLE SET: $1,895.00

911 GT3 Rear “High Thermal” disc specifications:

–          350 x 28 disc – High Thermal
–          Type III slot type
–          16 mm air-gap
–          72 vane ventilation
–          14.5 lbs – disc ring.
–          16 lbs – complete 2-piece disc assembly
–          Compatible with 911 GT3 and Turbo (997) Models
–          Integrates into factory parking brake

PORSCHE 911 GT3 (997.2) OEM DISC WEIGHTS – FOR REFERENCE:

– Front, 380 x 34: 24.1 lbs
– Rear, 350 x 28: 20.7 lbs

PORSCHE 911 GT3 (997.1) OEM DISC WEIGHTS – FOR REFERENCE:

– Front, 350 x 34: 26.4 lbs
– Rear, 350 x 28: 21.9 lbs

PORSCHE 911 Turbo (997) OEM DISC WEIGHTS – FOR REFERENCE:

– Front, 350 x 34: 25.6 lbs
– Rear, 350 x 28: 21.9

 

997 GT3 with Brembo Racing Type V Front discs. Installed by BBi Autosport. Photo Credit : Jerry Truong / BBi

997 GT3 with Brembo Racing Type V Front discs. Installed by BBi Autosport. Photo Credit : Jerry Truong / BBi

PROFESSIONALS CHOOSE BREMBO
FROM PORSCHE TEAMS, ENGINEERS, TO DRIVERS

Porsche factory run 997 GT3-R Hybrid at Petit Le-Mans. Photo : James Boone

Porsche factory run 997 GT3-R Hybrid at Petit Le-Mans. Photo : James Boone

“At Olsen Motorsports we only use the best, most reliable components on the market. Brembo has come to the table with a complete package that has changed the way we think about brakes. With the many options in friction we are able to put together track specific brake packages to get the last bit of pace out of the many chassis’ s that we work with to stay consistent, competitive, and up front on track. The longevity and consistency of the product is amazing, and that coupled with the accessibility, knowledge, and support of the factory, Brembo is now the only brand that we offer to our customers”.

Tim Olsen, owner of Olsen Motorsports


“Ok, here‘s a factual event that happened to us, it was very eye opening to me at the time, I thought “this cannot be possible”, but it was because we did a back to back test later that morning and sure enough, it fixed the problem (this was at a Sebring test in February, the weather was mid 70’s to low 80’s).  The driver complained of poor threshold feel, we replaced the pads thinking they had lost their friction potential, still the same result. So then we changed rotors (thinking “this is insane but what the hell”), and on the second lap the driver called in saying “I can brake properly now”.  I learned a lot that day, to never be closed minded about things that otherwise seem obvious.

 Brembo rotors, combined with the correct pads, allow the driver to decelerate the car harder and more controllably because the materials are properly compatible – this is not case with other rotors and pads and we know this because we did back to back tests, the drivers response and the data proved it”

Craig Watkins, former Engineer of Flying Lizard Motorsports for 10+ years


“Although often overlooked, the ability to stop is really the most important aspect of sports car racing.  As a driver, I have been trusting Brembo products to slow me down for the majority of my career.  I am very demanding of the brake system on my race cars.  I need stability at the initial brake application, and the ability to modulate smoothly off the brake pedal is essential for optimizing corner speeds.  Having Brembo components installed on the car always gives me the confidence to push the limits throughout the brake zones.”

” In fact, it was Brembo products on the Brumos Racing Porsche that helped us make that final charge for the 2011 Rolex Series Championship.  A qualifying issue in the final race placed us at the back of the grid, and it wouldn’t have been possible to make our way up to the front without maximizing stopping capacity.”

Andrew Davis, 2011 Grand-Am Rolex GT champion with Brumos Racing.


Brumos 997 Grand-Am Cup at Daytona 24 hour. Photo : James Boone

Brumos 997 Grand-Am Cup at Daytona 24 hour. Photo : James Boone

Brembo (General News) Brembo Performance Brembo Racing

How much does a Brembo Performance big brake system weigh vs. O.E. components

List below are a couple random systems that compare the approximate weights of a Brembo Performance GT system vs. the O.E. (Original Equipment) components from various makes and models.

In many cases a Brembo Performance system has a weight savings over OE brake systems even though the Brembo Performance system utilizes multi-piston calipers and often times larger diameter discs.

A Brembo Performance GT/GT-R big brake system is commonly comprised of:

Caliper

Either a 2-piece aluminum alloy, monoblock aluminum alloy, or
billet monobloc aluminum alloy caliper

Brake Pads

typically 2 to 4 pads per caliper

Rotor/Disc

1-piece rotor
– or –
2-piece disc with billet aluminum center and outer iron disc

Brake lines

typically 2-lines per axle set

Mounting brackets

typically 2 billet brackets

1st Comparison

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This is a weight comparison of the factory‪ ‎Porsche  911/996TT‬ (above image)

 1-piece rotor (330mm)

VS.

‪‎Brembo‬ Performance GT 355mm
2-piece disc which is roughly 6% larger.
The GT 6-piston caliper is approximately 7.5lbs.

2nd Comparison (just OE weights)

The weights of a used O.E. BMW M3 (E90/92) brake system
Caliper (F)
O.E: 7.6/11.8 lbs w/bracket, Brembo: 7.75 lbs w/o bracket
(R) 9.2 lbs
Pads: 2.0/1.6 lbs
Front: 1-piece disc: 22.6 lbs
Rear: 1-piece disc: 20.2 lbs

3rd Comparison

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A used Honda Civic Si (EK) steel sliding caliper, pads, line, and 10.2″/260mm rotor
weighs approx: 21.7 lbs

VS.

Compare that to the total weight of this Lamborghini rear system which is:
approx. 24.17 lbs total.
broken down by component:
it’s 15.94 lbs for the 14″ disc and
roughly 8.24 lbs for the forged monobloc racing caliper (w/pads).

Lamborghini rear brake system

Lamborghini rear brake system (above)

4th Comparison

composite-of-sharkwerks_weight-991Sharkwerks Comparing Brembo Performance vs. an OE 2013 991 Porsche Carrera S brake system

CALIPERS:
FRONT: Brembo Performance, 6-piston monobloc, 12.10 lbs vs. the Porsche OE 6-piston caliper, 11.44 lbs
REAR: Brembo Performance, 4-piston monobloc, 9.44 lbs vs. Porsche OE 4-piston caliper, 8.08 lbs

DISC/ROTOR:
FRONT: Brembo Performance,2-piece 380mm (15″) disc,  vs. the Porsche 1-piece rotor ( ) 23.8 lbs
REAR: Brembo Performance, 2-piece 380mm (15″) disc, 17.1 lbs vs. the Porsche 1-piece rotor ( ) 19.7 lbs

Full article here on Sharkwerks.com

Than there’s carbon ceramic, for the ultimate in weight savings

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Mike either has a strong finger or this Brembo CCM-R (carbon ceramic for street/track/racing) disc is nearly half the weight of iron.

Brembo (General News) Brembo Performance

The Advantages of Cross Drilled and Slotted Discs

This article was originally posted by Modified Magazine. Click here to read it.

We’ve received quite a few emails lately asking us to explain what the advantages are of cross-drilled and slotted rotors, as compared to the blank rotors most cars come standard with. We’ve also had requests to explain why many slotted rotors these days have curved or J-hook shaped slots, rather than straight slots. Rather than giving you the Wikipedia answer, we went right to the source by once again contacting Mark Valskis at Brembo North America (some of you will recall his contribution to the big brake kit Tech Talk story in the May ’11 issue).

As most of you already know, the basic function of a brake disc is to provide a mating surface for the brake pads so that when you stomp on the brake pedal the friction material that makes up the pad is squeezed against the rotors (by the calipers), converting forward motion into heat as the car slows. That heat is then radiated to the atmosphere as air flows over and through the rotors (and the rest of the braking system), completing the conversion of kinetic energy into thermal energy.

According to Mark at Brembo, cross-drilled rotors came into being because of the need to evacuate gases or water from the interface between the disc face and the brake pad surface. As Mark further clarified, “Modern brake pads don’t have an issue with out-gassing like they did many years ago, but the cross-drilling is still helpful for use in wet conditions, especially when the pad surface area is large. Additionally, cross-drilling increases the surface area of the disc, and this aids in disc cooling (one factor in brake disc cooling is the ratio of surface area to disc mass). The most significant feature of the holes (when done correctly) is that they continually refresh the brake pad surface, providing improved performance and greater disc life. As the holes pass the brake pad they essentially clean the surface, helping to prevent pad glazing or hardening. This effect can be easily observed on a drilled disc near the outer edge where there are no holes. In this area, the pad surface is not refreshed and you will typically see greater disc wear in this unswept area.” It’s also worth noting that this type of pad refreshing by cross-drilled and/or slotted rotors helps maintain more consistent frictional performance.

Rotor Education Tech Talk Cad Drawing
These CAD drawings of a slotted and ventilated Brembo brake disc illustrate just how compl
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Some of you may not be fans of cross-drilled rotors because you’ve seen cracks in the disc surface radiating out from the drilled holes, but as Mark points out, not all drilled discs are created equally. “Brembo has a long list of requirements for drilled discs. First, the holes are not just simple cylindrical holes. They have a more complicated shape that requires special tools to create. We also have strict requirements on hole density or the number of holes per given surface area of the disc. Additionally, there are requirements for the hole size and placement of the holes, including distance between holes, distance from braking surface edges, distance to disc vanes, angular offset of holes and more.”

But even with the highest quality cross-drilled discs, there can be issues with thermal shock and fatigue around the holes when using very aggressive racing brake pads. As Mark explained, “Slotted discs were developed to provide the benefit of refreshing the pad surface, while being able to be used with top-level racing friction materials. Drilled discs provide the same benefit [refreshing the pads], but also increase the cooling of the brake disc. With top-level racing materials, the heat input is very rapid and the increase in localized cooling around the holes can cause issues.” So slotted rotors were developed as a solution to a very specific problem associated with extremely aggressive friction material normally associated with racing, though if you’re anything like me and run some pretty aggressive brake pads on the street as well as at the track, then slotted rotors may be the right choice for your car.

Rotor Education Tech Talk Cross Cut
These CAD drawings of a slotted and ventilated Brembo brake disc illustrate just how compl

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As for the shape of the slots, Mark had this to say: “The different design of the slots is due to extensive research and development, including [brake] dyno testing. Due to the fact that track testing is required, and thanks to strong collaboration with many top-level racing teams, Brembo has developed a very broad knowledge of the many different types of slot shapes possible when machining discs.” Since this type of extensive R&D is really outside the scope of all but the biggest brake system manufacturers, a lot of what you’re seeing in the aftermarket are companies copying what leaders like Brembo are doing with respect to slot shape, slot spacing, slot depth and so on.

Ultimately, the slots are all designed to do the same thing (refresh the brake pads), but different shapes no doubt impact the aggressiveness with which the pads are refreshed and also likely affect localized cooling of the disc. And speaking of cooling, the internal structure of ventilated rotors plays a very important role here. “The mass of the disc is the determining factor in how much energy the disc can absorb, while the design of the internal geometry helps improve the disc’s ability to shed the heat,” Mark explains. “The key factor in the use of a vented disc versus a solid disc is the increase in the ratio of disc surface area to mass. Heat transfer to the air occurs only on the surfaces of the disc that are directly exposed to air; so the more surface area, the better the disc can shed the heat.”

Rotor Education Tech Talk Display Model
This NASCAR braking system provides some interesting insight into disc slot design – note

As for the internal vane structure of a ventilated disc, Mark adds: “There are limitless internal vane structures that are possible. Design of the vane structure has a dramatic effect on the performance of the brake disc. Some designs, such as directional curved-vane discs actually improve the airflow through the disc by turning the disc into a centrifugal pump. However, the cost of implementing this is increased due to the need for unique left- and right-hand discs. Brembo has patented a ‘pillar vane’ internal geometry that provides nearly all the airflow advantages of the curved vane discs while being able to use the same disc on both the left and right sides of the vehicle.”

Who knew so much technology goes into these seemingly simple iron discs (the material composition of brake rotors being a topic for another month). But when you consider just how vitally important the braking system is to safety and performance, it shouldn’t come as a surprise that industry leaders like Brembo are constantly looking for ways to improve the design of their brake discs.
Rotor Education Tech Talk David

Send your feedback to dpratte@modified.com

Read more: http://www.modified.com/tech/modp-1111-rotor-education-tech-talk/viewall.html#ixzz27PLW71oM

Brembo (General News) Brembo Performance

Brembo CCM-R (Carbon Ceramic for Racing)

The Brembo CCM-R disc is a product of many years experience accumulated by Brembo in the field of carbon brake materials used in F1, combined with the expertise acquired by the company in CCM applications for road use.

The main advantages of the Brembo CCM-R disc are:
– considerable saving in weight, compared to cast iron (̴ 5kg each wheel assembly);
– high thermal conductivity;
– durability and versatility characteristic of carbon ceramic material for road use (disc life 5 times longer);
– friction 10% better than cast iron (comparison made using the same pad compound);
– operating temperature 5% lower.
Selected materials and original processes, researched and optimized to produce the Brembo CCM-R disc — and incorporating the newest technologies applied to carbon ceramic discs — have resulted in a product with superior engineering features.

CCM-R for the Nissan GT-R (R35)

Brembo Press Release (PDF): CCM-R-Disc_14-01-2010
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