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What mods to improve stopping distance?

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Old Feb 13, 2007 | 08:21 PM
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Default What mods to improve stopping distance?

I am contemplating buying some AP Racing 6pot/4 pot BBK to replace my stock Brembos. After doing more reading, the general consensus is that BB kits do not improve stopping distance. Rather they just provide extra protection against brake fade. So my questions are:

1. If I'm only doing 20-25 minute track sessions, would a BBK provide any real world benefits. And by real world I mean improvement in lap times.

2. Is there anything I can do to actually decrease stopping distance besides decreasing the weight of the car?

Thanks.
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Old Feb 13, 2007 | 08:28 PM
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Brake pads, stickier tires. Your stock brembos are probalby more than adequate.
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Old Feb 13, 2007 | 08:39 PM
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Originally Posted by MC
in addtion to that if you track alot stainless steel brake lines and maybe slotted rotors are something to look into aswell.

maybe try the stoptech upgrade for your stock brembos
dont slotted (and drilled rotors) just dissipate heat faster? they dont make you stop any faster theyre just good for long track sessions where your brakes get really heated?
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Old Feb 13, 2007 | 08:42 PM
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-pads <get the right compound, swap them out when you go to the track
-tires <stickier and wider
-driving instructions
-proper alignment <this will affect your max grip alot, so you might need suspension peices to get it dialed in if you are lowered.
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Old Feb 13, 2007 | 08:47 PM
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At the moment I'm running stock Brembo calipers, braided lines, slotted Brembo rotors, AP Racing Brake fluid, Endless brake pads and 285/295 R compounds. BTW I have a built/APS TT.

What else can be done? I don't mind spending the money for a BBK if it provides a noticeable improvement in braking. I know it'll provide more consistent braking due to decrease chance of fading but I would like an increase in performance from the 1st lap.

Would a change in the master brake cylinder improve things?

Allignment I'm still playing with and I could always do with more instruction. But just isolating it to the car's braking system - what can be done?

Last edited by DRE350; Feb 13, 2007 at 08:51 PM.
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Old Feb 14, 2007 | 07:44 AM
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Stickier tires and learning how to brake. The hardest "driving" thing to learn is how to apply, control, and release the brakes at the traction limit.
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Old Feb 14, 2007 | 02:25 PM
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Don't overlook springs and shocks, as they will alter weight transfer and the amount of braking work done front to rear.
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Old Feb 14, 2007 | 02:28 PM
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Also downforce mods like a wing and/or front splitter can affect this as well by affecting weight transfer.
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Old Feb 14, 2007 | 07:06 PM
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Thanks for all the suggestions.

So the only thing a BBK does is prevent fade? I think I'll probably spend the AUS$10k on someting else then.

Can guys with BBK who track their car chime in - was it worth it?
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Old Feb 14, 2007 | 07:16 PM
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Originally Posted by DRE350
2. Is there anything I can do to actually decrease stopping distance besides decreasing the weight of the car?

Thanks.

1.Install a drag chute

2.Only drive up hill

3.Drive very slowly

You are welcome
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Old Feb 14, 2007 | 07:36 PM
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weight reduction.
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Old Feb 14, 2007 | 07:44 PM
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If you did anything that would increase the clamping force on the rotors it could severly mess with your abs system. IE changing your brake master cylinder. After all you can lock up your brakes as they are.
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Old Feb 14, 2007 | 08:09 PM
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If hitting the brake pedal can still lock the tires (or activate ABS), and you want shorter stopping distances, you need to increase grip. Stickier tires, alternate alignment (reducing negative camber likely making handling worse), better damping, or increased downforce are the likely candidates. Realistically, increased downforce (perhaps the new splitter being advertised here?) stickier tires, and less weight are probably the best choices. Better suspension will probably help to some degree, but I would surmise only minimally unless your braking zones are especially bumpy.

ahm
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Old Feb 14, 2007 | 08:11 PM
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A BBK is 110% worth it on the track. If you have never experience brake fade on the track, it is not fun. A BBK, however overkill it might be for your application now, is worth it because no matter how much you mod your car, you will still be able to stop at the end of the straight. What are your plans for the car as a whole? Going F/I or staying N/A? How deep into suspension modding?
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Old Feb 14, 2007 | 08:56 PM
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Originally Posted by 350ZNV
A BBK is 110% worth it on the track. If you have never experience brake fade on the track, it is not fun. A BBK, however overkill it might be for your application now, is worth it because no matter how much you mod your car, you will still be able to stop at the end of the straight. What are your plans for the car as a whole? Going F/I or staying N/A? How deep into suspension modding?
Well the car is slowly becoming a track car

- built TT (APS)
- Suspension: at the moment Koni with Whiteline springs but when I finish my car (waiting for seat and roll bar), will be getting Bilstein to organise my set up.

You have the AP right? How has it been?
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Old Feb 14, 2007 | 11:16 PM
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If you want to learn about braking, more than you wanted to know, start with this page, especially the Physics of Braking Systems paper:

http://www.stoptech.com/tech_info/te...e_papers.shtml

It's complete with equations that you saw in your high school physics class and never thought you'd use! But it's written so you can understand even if mathematical formulas scare you.
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Old Feb 15, 2007 | 07:08 AM
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Originally Posted by DRE350
Well the car is slowly becoming a track car

- built TT (APS)
- Suspension: at the moment Koni with Whiteline springs but when I finish my car (waiting for seat and roll bar), will be getting Bilstein to organise my set up.

You have the AP right? How has it been?
If I were you I would get the APs for sure. The faster your car goes, the better brakes you will need, especially with our heavy cars. Stock Brembos, even with good rotors and pads, don't last too long. I have burnt up a set while N/A. Even Eagle1 burnt a set of 14" Stoptechs with his monster G35. My APs have worked flawlessly the entire time I have had them and I haven't ever got them to their limit even with 554whp and big 285 Hoosiers on the front.
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Old Feb 15, 2007 | 11:11 AM
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Lighter rims. Lighter rotors. Stickier tires. Bigger footprint. Lighter car.
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