Re: Anyone running 14" brakes rotors?
[Re: BergmanAutoCraft]
#1638554
06/26/14 09:33 AM
06/26/14 09:33 AM
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Joined: Oct 2003
Posts: 21,345 Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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I have 14" brakes off the front end of the gen 3 & 4 vipers. 4-piston brembos and 14" rotors. Brakes feel great, stops NOW and inspires confidence in your ability to stop short when needed. Pedal modulation to avoid lock-up is easy. Snd despite efforts to heat them up with repeated hard stops, I've not experienced brake fade yet.
Wheel size, I doubt you could fit 17" wheels over these, never tried myself though. 18" is probably the safe minimum diameter.
I wouldn't go bigger than 14" rotors unless I bought super expensive aluminum hubs with bolt on rotor surface area to reduce weight. These stock viper rotors weigh around 30lbs each.
**Photobucket sucks**
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Re: Anyone running 14" brakes rotors?
[Re: Uhcoog1]
#1638556
06/26/14 10:44 AM
06/26/14 10:44 AM
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Joined: Oct 2003
Posts: 21,345 Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Nice setup. I'd like to know more about your mounting brackets, and which spindle you're using. Along with the hub set-up
**Photobucket sucks**
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Re: Anyone running 14" brakes rotors?
[Re: 451Mopar]
#1638557
06/26/14 10:52 AM
06/26/14 10:52 AM
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Joined: Dec 2003
Posts: 23,273 Here
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 23,273
Here
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So I notice here for almost the first time in a decade, a brake size discussion "of mine are bigger then yours" on brakes that includes more then a mere suggestion on the package weight. We have actually made progress. To bad its a little more complicated to include MOI in casual rotor discussions since diameter is such a factor.
" All sorts of things can happen when you are open to new Ideas" Inventor of Kevlar
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Re: Anyone running 14" brakes rotors?
[Re: 70Cuda383]
#1638559
06/26/14 12:38 PM
06/26/14 12:38 PM
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Joined: May 2005
Posts: 723 Houston Tx
Uhcoog1
super stock
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super stock
Joined: May 2005
Posts: 723
Houston Tx
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Quote:
Nice setup. I'd like to know more about your mounting brackets, and which spindle you're using. Along with the hub set-up
15/16" Master Cylinder, manual rear bias adjuster Caddy CTS-V pads (~0.3" taller than viper pads) 'Stock' Brembo pads in rear (HP1000), Raybestos ST-47 pads in front
Front: Spindle- 73+ a body disc Hub- aluminum, from dr diff Bracket- steel, from dr diff Front:
Rear: Floater 9" Ruff stuff specialties weld on brake brackets chopped down and re-drilled 1.5"x1.5" aluminum bar stock for adapter Rear:
-'02 Dodge Viper Ex-World Challenge racecar -'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course
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Re: Anyone running 14" brakes rotors?
[Re: jcc]
#1638561
06/26/14 01:36 PM
06/26/14 01:36 PM
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Joined: May 2005
Posts: 723 Houston Tx
Uhcoog1
super stock
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super stock
Joined: May 2005
Posts: 723
Houston Tx
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Quote:
So I notice here for almost the first time in a decade, a brake size discussion "of mine are bigger then yours" on brakes that includes more then a mere suggestion on the package weight. We have actually made progress.
To bad its a little more complicated to include MOI in casual rotor discussions since diameter is such a factor.
IMO, weight matters, but in a different way than you're saying.
Ideally, you want the lightest rotors that will handle the heat. For less-than-competitive racing, I like my 28 pound rotors- they're a huge heat sink and stave off brake fade.
A point of reference - Matt Robertson road races a dodge magnum, and switched from lightweight 2 piece rotors back to factory rotors. Why? Because the two piece rotors were very expensive and wouldn't hardly last a weekend. The factory SRT8 rotors last multiple weekends, cost much less, and didn't get as hot doing so.
I agree that increasing unsprung rotating mass isn't good, but it doesn't outweigh the benefits of the increased heat sink (i.e. weight) for most.
-'02 Dodge Viper Ex-World Challenge racecar -'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course
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Re: Anyone running 14" brakes rotors?
[Re: Uhcoog1]
#1638563
06/26/14 05:29 PM
06/26/14 05:29 PM
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Joined: Dec 2003
Posts: 23,273 Here
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 23,273
Here
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I suspect that brake technology has progressed in pretty big strides lately, in the area of pads/fluids. I have been around racing applications since discs (solid) were introduced. And surprisingly Nascar had to wait for the technology to progress enough before they became a user. That said, and I have said before, any un ducted brake system that can lock a tire in use, and doesn't fade, in competition should be considered over capacity in whatever way you choose to measure. Racers have for decades added ducting/blowers to be able to reduce the size of the heat sink, and all the benefits that reduced heat sink provides. I am doubtful many here are experiencing brake fade with a properly set-up brake system ( balanced correctly, correct pads for application, fresh bleed fluid). Anybody suffering severe brake fade has a problem with their brake system, or it s undersized for the application, or their driving technique might be in need of improvement. The only way to actually determine that, is to push the system to point of approaching brake fade. That should not be hard to do, if the system is balanced properly, concerning suspension, F/R, HP, etc. If that fade is difficult to achieve, ducting will provide more then enough safety margin for one's peace of mind, if it the can't, something is not in balance and you have brake system overkill, to a proven performance detriment. I have heard others say that brake ducting is difficult, well only if you haven't tried, and F1 aero is not a big concern. Anything is a lot better then nothing. I also get a kick out of the bigger brakes givening better modulation crowd, well if you are braking at 100% thresholds at over 100mph with the typical cars here, you are first 1 in 1000? and can't be gaining much insight on this forum. If you are running under 100mph and or autocross, your oversize brakes are costing you time. FWIW at the recent optima Daytona,less then 1/3 of the cars had brake ducting, which for a competition event seemed rather strange, it was hot, it was long, and Daytona was/is likely one of the faster courses in the series. No way to find out reliability what factor brake fade played, on most of the big brake cars. remember it is 3+ miles long, serious banking, and possible to hit 160mph. I think the last paragraph is fairly accurate, and I'm sure there will some disagreement on how to interpret my observation.
" All sorts of things can happen when you are open to new Ideas" Inventor of Kevlar
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Re: Anyone running 14" brakes rotors?
[Re: AndyF]
#1638566
06/26/14 06:39 PM
06/26/14 06:39 PM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Mine are same as Wades in the front except for color.
Mopar to the bone!!!
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Re: Anyone running 14" brakes rotors?
[Re: 451Mopar]
#1638569
06/27/14 05:27 PM
06/27/14 05:27 PM
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Joined: May 2007
Posts: 553 Sac, CA, USA
ntstlgl1970
mopar
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mopar
Joined: May 2007
Posts: 553
Sac, CA, USA
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Quote:
Curious if anyone is running 14" brake rotors and how they worked out for wheel sizing and feel. Whos kit and price would be nice too..
I have been looking at the Bear 14" with the 6P calipers, but they are $2,400+ each end.
I'm running this kit on the front of my car and I like it. As far as overall weight is concerned, it was a wash between my 10.875 rotor, slider caliper setup and the baer kit. Also 13 or 14" rotors are the same price. I like the pedal feel on mine, but I might try a different master cylinder bore to lessen the overall pedal travel a little bit. At willow springs, I didn't have any issues with fade. I think I was ~110-115 at the end of the straightaway into turn one so my car isn't as fast as others on here. I'm running the 11" stock drums in the rear. I also won't claim to be a great driver as this was my first track experience - just my 2 cents
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