Go Back  Rennlist - Porsche Discussion Forums > Water Cooled Technical Discussion Areas > 991 GT3 GT3RS and 911R
Reload this Page >

New Product: Essex/AP Racing Front and Rear Complete Radi-CAL GT3 Brake Kit..finally!

Notices
991 GT3 GT3RS and 911R
Sponsored by:

New Product: Essex/AP Racing Front and Rear Complete Radi-CAL GT3 Brake Kit..finally!

 
Old 07-10-2019, 09:26 AM
  #241  
[email protected]
Basic Sponsor
Rennlist
Site Sponsor

Thread Starter
 
JRitt@essex's Avatar
 
Join Date: Jan 2012
Location: Charlotte NC
Posts: 584
Received 1 Like on 1 Post
Default

Originally Posted by mxp View Post
is it possible to replace stock ceramics with these rotors? not looking to change callipers yet
Yes sir, absolutely. You can find them in the links below.

Front AP Racing J Hook iron replacement for PCCB= https://www.essexparts.com/essex-des...1gt3PCCB-front

Rear AP Racing J Hook iron replacement for PCCB= https://www.essexparts.com/essex-des...pccb-rear39032

A popular package among those not ready to change their calipers would be our AP Racing discs, mated to some Ferodo Racing pads, and our Spiegler Stainless Steel Brake Line Kit. The lines give you some flexibility with pad changes if you want to move to caliper studs instead of bolts, and the Ferodo pads are a perfect match with the AP iron. For track use, I'd suggest either the DS1.11 for DS3.12. For autoX and general sport use, the DS2500 is perfect. The great thing about the Ferodo compounds is that they all play nice together on the disc face, and you don't get the typical vibrations and judder you see with a lot of other brands. You also don't have to constantly re-bed the discs. Please shoot me a PM if you're interested in learning more.

You can see the Spiegler Brake Line Kit here: https://www.essexparts.com/spiegler-...ear-6-line-kit

The pads in the OEM shape for your calipers can be found on this page:
https://www.essexparts.com/my-vehicl...RS/Iron%20Disc

Also, lots of owner feedback on our blog, including some tales of our disc longevity:
https://www.essexparts.com/news-blog

Here are the discs installed:







__________________
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
[email protected]
JRitt@essex is offline  
The following users liked this post:
thebishman (07-10-2019)
Old 07-10-2019, 09:29 AM
  #242  
groundhog
User
 
Join Date: May 2018
Posts: 1,226
Received 20 Likes on 18 Posts
Default

Originally Posted by [email protected] View Post
Thanks! Our system saves 33 unsprung lbs. vs. the OEM iron brakes. That's considerably more weight savings than the Weissach Package, for a lot less money.
Where does the weight saving come from? Calipers and rotors and what proportion? Very little point in taking mass out of rotors given the limited range in specific heat capacity (of steelies)
groundhog is offline  
Old 07-10-2019, 09:57 AM
  #243  
[email protected]
Basic Sponsor
Rennlist
Site Sponsor

Thread Starter
 
JRitt@essex's Avatar
 
Join Date: Jan 2012
Location: Charlotte NC
Posts: 584
Received 1 Like on 1 Post
Default

Originally Posted by groundhog View Post
Where does the weight saving come from? Calipers and rotors and what proportion? Very little point in taking mass out of rotors given the limited range in specific heat capacity (of steelies)
Below are the corner weights of our setup vs. the OEM PCCB and Iron systems. When considering disc mass, it's not just a matter of overall mass. It's a matter of where the mass is located, and all of the disc design features play a role. Overall diameter, thickness, swept area/radial depth, the number of internal vanes, wall thickness, etc. all play a role in how much heat the discs can store and shed. With brakes one needs to think of heat capacity from two different angles, sledge vs. scalpel. The sledge hammer route to cool-running brakes is to squeeze the most mass possible under the wheels. That means huge discs, giant calipers, and correspondingly giant pads. That is the brute force manner of providing enough mass for heat soak. It allows the parts to be simplified a bit, while still being able to get the job done. It's definitely not the most efficient solution, and the penalty is high unsprung weight. That's the method employed on OEM street cars because of cost reasons. The racing-derived solution is the scalpel method. All extraneous weight is stripped away, with only the bare essentials remaining. In pro racing, if the car crosses the finish line and the brakes melt on the victory lap, they were designed perfectly for the task at hand. Winning is the only goal, and other factors don't play as great of a role (cost, long-term durability, etc.) That's our mindset when we design the products used in NASCAR Cup, IMSA, etc. Rather than just throwing mass at heat, we are thinking efficiency via clever design...lighter, stiffer, faster.

For the aftermarket, we DO take cost, long-term durability, etc. into account, but we don't dilute the product anywhere close to the extent you see in competing products (which technically start out as road products from the beginning). When we look at a platform for development, we create an owner profile...how will this person modify their car? How much power will they add? What tires will they use? How many laps and on what track will they be running? Then we sketch out some basic disc parameters based on thermal requirements. You can get a better feel for this mindset in this video:


I'm proud to say that we've been selling these kits for well over a year and have sold almost no spare discs! While that isn't helping our bottom line, it's making for a lot of satisfied Porsche track junkies. Many of our customers have been beating the hell out of their kits many weekends out of the year. If you go back and look at my earlier posts in this thread, you'll see my prediction that the discs we're employing are more than ample for long disc life based on their thermal capacity. The only reason we went bigger than 380mm on the front diameter is because we need to move the disc out a bit to allow for a caliper adapter bracket. If I was designing a setup from scratch and didn't have to work around the existing spindles, something like our 372x345mm Front / 365x30mm rear setup would have been more than ample on this platform. We have 800+ HP ZR1 Corvettes pounding our system of that size all over the world without issue. My C6 Corvette track car puts down about 475 WHP and weighs 3300 lbs. I can run all day on my 372mm front / 340mm rear brake kit, and the Corvette is considerably more biased towards the front brakes vs. the GT3.

In summary, our system achieves the lightness demanded by racers, but also provides the long-term durability demanded by a budget-conscious track enthusiast.

Front
OEM PCCB
Caliper= 9.3
Pads= 7.7
Discs= 15.2
Total brake corner weight= 32.2

Essex/AP Racing Radi-CAL BBK
CP9661 caliper= 6.1
Caliper bracket= 1.0
Pads= 5.2
Assembled discs= 21.5
Total brake corner weight= 33.8

OEM Iron
Caliper= 9.3
Pads= 7.7
Discs= 24.2
Total brake corner weight= 41.2

Rear
OEM PCCB
Caliper= 7.5
Pads= 6.1
Discs= 13.5
Total brake corner weight= 27.1

Essex/AP Racing Radi-CAL BBK
CP9449 caliper= 4.85
Caliper bracket= 0.7
Pads= 3.85
Assembled discs= 19.1
Total brake corner weight= 28.5

OEM Iron
Caliper= 7.5
Pads= 6.1
Discs= 24.0
Total brake corner weight= 37.6
__________________
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
[email protected]
JRitt@essex is offline  
Old 07-10-2019, 10:07 AM
  #244  
[email protected]
Basic Sponsor
Rennlist
Site Sponsor

Thread Starter
 
JRitt@essex's Avatar
 
Join Date: Jan 2012
Location: Charlotte NC
Posts: 584
Received 1 Like on 1 Post
Default

Originally Posted by mxp View Post
is it possible to replace stock ceramics with these rotors? not looking to change callipers yet

I forgot to say...we have the components to build the PCCB replacements on-hand, and we can build and ship you a set within 24 hours. Thanks!
__________________
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
[email protected]
JRitt@essex is offline  
Old 07-10-2019, 10:25 AM
  #245  
groundhog
User
 
Join Date: May 2018
Posts: 1,226
Received 20 Likes on 18 Posts
Default

Thanks for the detail in terms of the mass of the various components - cheers
groundhog is offline  
Old 07-11-2019, 05:38 PM
  #246  
[email protected]
Basic Sponsor
Rennlist
Site Sponsor

Thread Starter
 
JRitt@essex's Avatar
 
Join Date: Jan 2012
Location: Charlotte NC
Posts: 584
Received 1 Like on 1 Post
Default

Hello Folks,

Essex Parts Services has been a loyal supporter of this forum for quite some time. We've been advertising this job via more traditional channels, but haven't had much luck. We'd therefore like to offer this great opportunity to forum members! Please let us know if the description below sounds like you or a friend of yours.

Essex Parts Services is seeking an experienced digital marketing expert, who also happens to be a rabid automotive enthusiast. Your goal at Essex will be to develop and implement the company’s digital strategy to achieve sales, profitability, and website traffic objectives. To be successful in this role you will need to be an outstanding communicator via all mediums, possess in-depth knowledge of a wide range of the latest digital marketing tools, be extremely creative, and have intimate familiarity with a hardcore auto enthusiast’s mindset.

Core responsibilities include but are not limited to:

· Digital Marketing Strategy Development: Analyze customer behavior and motivations and leverage those insights to develop the company’s overall digital marketing strategy. Define success metrics, determine optimal media mix, and create and maintain a robust marketing calendar across all channels.
· Creative: Create photos, videos, emails, social media posts, articles, graphics, and banners to properly convey our brand image and intended message to potential customers.
· Execution: Build, develop, and implement the current and emerging digital platforms necessary to reach potential customers, while creating deliverables that resonate with our target audience.
· Measurement: Monitor campaign performance, report findings, and perpetually adjust plans to maximize reach. Thoroughly leverage data to drive future initiatives.
· SEO: Perpetually refine our website, social media properties, and all other digital presentations with the objective of increasing awareness and keeping Essex at the top of relevant search rankings.

Knowledge, Skills, and Abilities

· At least several years of digital marketing experience
· Proven ability to manage complex projects
· Demonstrated proficiency with SEO and Analytics
· Expertise at crafting impactful emails
· eCommerce and web administration experience

· Deep knowledge of social media platforms, and the ability to skillfully interact with customers on them
· Photography, photo editing, video editing

Are You A Good Fit?

In a time when corporate loyalty is nearly a thing of the past, the Essex team remains a tight-knit unit working towards a unified goal. Many of our staff members have been with us for over a decade, and our company has a familial feel. We are looking for someone who shares our values and wants to find a long-term home in their daily work life. Our business has grown steadily for years and will continue to do so based on a wide range of initiatives we are currently developing. Whomever fills this role will have the opportunity to grow with us, but they will need to wear many hats. Our culture is not one of hand-holding and micromanagement. To succeed in this role, you will need to think and act independently, and you will need to perpetually produce results. The more versatile, motivated, and capable you are, the more opportunity you will have to achieve your professional goals during your tenure with us. Finally, if you aren’t a real ‘car person’ to the core, please don’t waste your time and ours by trying to fake it. You won’t have much fun here, and we will know within two minutes of meeting you. If you think 2JZ is a rapper, this isn’t the job for you!

Please send a cover letter and resume to support at essexparts.com

__________________
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
[email protected]
JRitt@essex is offline  
Old 07-11-2019, 06:48 PM
  #247  
FourT6and2
Addict
Rennlist Member
 
FourT6and2's Avatar
 
Join Date: Jan 2018
Location: San Francisco
Posts: 1,604
Received 14 Likes on 12 Posts
Default

PM sent.
FourT6and2 is offline  
The following users liked this post:
[email protected] (07-12-2019)
Old 07-12-2019, 10:00 AM
  #248  
mdrums
Addict
Rennlist Member
 
mdrums's Avatar
 
Join Date: Mar 2006
Location: Tampa
Posts: 14,930
Received 31 Likes on 16 Posts
Default

Jeff you put together some really well written and laid out posts detailing the products you sell.
mdrums is offline  
The following users liked this post:
[email protected] (07-12-2019)
Old 07-12-2019, 10:13 AM
  #249  
[email protected]
Basic Sponsor
Rennlist
Site Sponsor

Thread Starter
 
JRitt@essex's Avatar
 
Join Date: Jan 2012
Location: Charlotte NC
Posts: 584
Received 1 Like on 1 Post
Default

Originally Posted by mdrums View Post
Jeff you put together some really well written and laid out posts detailing the products you sell.
Thank you very much...really appreciate the positive feedback!
__________________
Jeff Ritter
Mgr. High Performance Division, Essex Parts Services
Essex Designed AP Racing Radi-CAL Competition Brake Kits & 2-piece J Hook Discs
Ferodo Racing Brake Pads
Spiegler Stainless Steel Brake Lines
704-824-6030
[email protected]
JRitt@essex is offline  

Thread Tools
Search this Thread
Quick Reply: New Product: Essex/AP Racing Front and Rear Complete Radi-CAL GT3 Brake Kit..finally!


Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: