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:cool: 13" rotor kit using STOCK calipers!

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Old Mar 22, 2007 | 12:03 AM
  #21  
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Originally Posted by dTor
Props to Rishie at AutoRnD for pointing this out to me.



http://www.racingbrake.com/350Z_s/2432.htm

It's simple really - just a new bracket to space the caliper further away from the rotor cap and a bada$$ 13" Crossdrilled/Slotted rotor lurking behind your wheel.
Wow!!! That look like junk and a total waste of money. That has to be the worst looking venting on a rotor I have ever seen.

JET
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Old Mar 22, 2007 | 04:12 AM
  #22  
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Read the complete review and learn how RB 4 piston caliper and rear OE caliper BBK set up for 350Z performed at track.
http://www.freshalloy.com/site/marke...ke/default.asp

RB believes in proportional front and rear rotor size when it comes to upgrading (oversizing) brake. We always provide big rear kit to match up with the front BBK. We have lots of request from customers and other communities to build a true balanced BBK or rear BBK for those already installed front BBK.

If only for the look you may do whatever you think, or some “expert’s” advice to convice you what is right. However if you are really tracking the car you should either upgrade your stock rotors and pads to high performance material or upgrade (oversize) your brake both front and rear at the same time.

See how many racers at RX7 community are troubled with the inadequate OE or improper 13" front BBK set ups and how RB is solving the problem.

Read the thread, ask question there and you should learn from those racing enthusiasts based on their personal experience in searching for the right track brake set up.
http://www.rx7club.com/showthread.php?t=605463
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Old Mar 22, 2007 | 06:24 AM
  #23  
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i have not had any problems with my racingbrake bbk upgrade front and rear.but i also did not get the drilled rotors,i got the 2 piece rotors though.
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Old Mar 22, 2007 | 06:58 AM
  #24  
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Originally Posted by JETPILOT
Wow!!! That look like junk and a total waste of money. That has to be the worst looking venting on a rotor I have ever seen.

JET
not for nothing (I have 0 experience with this brand) but the venting on the outside out of the rotor has very little to do with it's performance - it's all about the venting on the inside
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Old Mar 22, 2007 | 01:04 PM
  #25  
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Gary,

I believe you have the actual racing brake Big Brake Kit where as is this is an upgrade that utilizes the stock caliper but relocates it further from the hub to accomidate a 13" diameter rotor. We have no personal experience with these items but Racing Brake does make some quality parts. A personal friend of ours runs their parts in SCCA and stands behind them 100% FWIW.
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Old Mar 22, 2007 | 02:08 PM
  #26  
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Simple to calculate the gain! As the rotor temperature sinking is directly a function of mass.........if they weigh 10% more they get 10% less hot.

If the calpers are moved out 18% the pedal force drops 18% for the same friction level on the front.

The problem is you lose the same percentage on the rears and actually increase stopping distances on the street unless you change proportion valving.

Same thing can happen with redesigning braking system by changing pad compounds, if the friction coefficients don't perfectly match oem the valving will be wrong.
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Old Mar 22, 2007 | 07:35 PM
  #27  
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Originally Posted by Q45tech
Simple to calculate the gain! As the rotor temperature sinking is directly a function of mass.........if they weigh 10% more they get 10% less hot.

If the calpers are moved out 18% the pedal force drops 18% for the same friction level on the front.

The problem is you lose the same percentage on the rears and actually increase stopping distances on the street unless you change proportion valving.
I'm not quite following what you're saying in the last paragraph. Are you saying that with an identically proportional (to the front) oversized rear rotor setup that you will lose braking force? Or are you talking about losing stopping power when only the front rotors are oversized?
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Old Sep 8, 2007 | 08:29 AM
  #28  
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Originally Posted by Q45tech
Simple to calculate the gain! As the rotor temperature sinking is directly a function of mass.........if they weigh 10% more they get 10% less hot.

If the calpers are moved out 18% the pedal force drops 18% for the same friction level on the front.

The problem is you lose the same percentage on the rears and actually increase stopping distances on the street unless you change proportion valving.

Same thing can happen with redesigning braking system by changing pad compounds, if the friction coefficients don't perfectly match oem the valving will be wrong.
I thought the Automatic Brake Force Distribution/Electronic Brake Distribution compensated for these changes?

Last edited by thinking; Sep 8, 2007 at 10:02 AM.
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