BBK vs modified OEM

[kevinatfms]

ok as of now i have the following setup:
Baer GT plus system w/ 2 piece rotors and PBR calipers
front pads are hawk hp
rears are shelby gt500
ss lines
brake cooling ducts for track days since they rub on full turns
gt500 wheels w/ 275/40R18's

my question is if i went back to oem calipers but installed a set of dba 2 piece rotors and full time brake ducting kit would i see any improvement in weight off each front wheel?

i havent gotten a chance to weigh each caliper/brake rotor but it seems the pbr calipers are quite a bit lighten than oem while the dba rotors i would assume will be quite a bit lighter than the baer 2 piece rotors?

im trying to minimize weight but keep my fade resistance as it is. i have not had a problem running my car 75-80% and not having fade or overtemps of the pads yet. i was thinking i could save a little weight and rotating mass at the wheel end itself by going to the oem caliper and dba rotor setup?

anyone have any information on this or have a better insight and to which direction should i go?
car is primarily used for HPDE sessions and quite a bit of autocross but is not a full time DD, just a once in a while car.

thanks guys!

 

[kevinatfms]

forgot to add, i have been looking through threads for a while on this and found that most people that have gone to a BBK have gone the gt500 route, while i went with a used baer kit it seems both have the benefits and problems

the price is not really a problem, i would hope the dba rotors could last 7-8 sessions a season total?? at 600+ for a set of rotors its a little pricey but i really dont mind spending that every year or so, just not every session.

and also to add, the dba's are about 650 shipped while just the rings of the baer 2 piece are 600+, so in the end which do you all think would last under the conditions set forth?

 

[Chris B.]

2 piece rotors will save you some weight, but unless you are participating in time trials or competitively racing, the cost probably isn't worth it.

I have been using OEM rotors and calipers for 2+ years for HPDE events. I
also added the Quantum Motorsports brake cooling duct kit. I can run my car hard for 25-30 minute sessions and I don't have brake fade. On lower speed tracks or tracks that are easier on brakes, I use Hawk HT-10 pads and on tracks that are harder on brakes, I use Carbotec XP12's and XP-10's. I've been using Motul RBF 600 fluid.

Using OEM calipers, OEM rotors, a brake cooling duct kit, and good pads and good brake fluid your brakes will last a long time without heat issues even when you run them hard. When I've had isntructors ride along with me in my car, they were shocked to find out I stil have the stock rotors and calipers just with cooling ducts and better pads and fluid. One of them said, "Wow this car has a lot of brake!"

If weight is a concern, you can get DBA rotors for the stock calipers. You also should look into light weight wheels if it is that much of a concern. The GT500 wheels are heavy. You can save at least 5 lbs per corner by going to lighter wheels. If you don't mind using expensive wheels, for track days, you can save closer to 7-9 lbs per corner.

Also OEM new takeoff rotors are rather inexpensive comapred to the aftermarket parts. A set of OEM front rotors lasts me a full season of HPDE events.

 

[Stangmeister9]

you didn't mention what tires you are running (type, not size)tires can weigh down your car as well as the wheels as mentioned before. some can weigh almost 5lbs per tire more then others. tire rack give you the weights of all the tires they sell.

as Chris B mentioned, if cost is not a problem a good set of wheels will out weigh (no pun intended)the benifits of changing to the oem calipers. i too ran the oem calipers with ducts and HP10 pads on the front and hp+ on the rear for 30 minute sessions (x3) per event. never had any issues. try removing some sound deading from the car if you want to save some weight, but all will be negligable at best.

 

[kevinatfms]

my track setup is gt500 wheels with nt05's in 275/40-18's. i was thinking of going back to oem calipers with the dba 2 piece rotors instead of investing in a new set of rotors for my baer kit is what im talking about, just trying to find the goods/bads of the decision.

 

[knownukes]

my track setup is gt500 wheels with nt05's in 275/40-18's. i was thinking of going back to oem calipers with the dba 2 piece rotors instead of investing in a new set of rotors for my baer kit is what im talking about, just trying to find the goods/bads of the decision.

Kevin, I run the Baer 2 piece rotors, as they where a part of the super snake package. I have hem front and rear. I am happy with their stopping power but very unhappy with their durability. I get 6-8 track days out of the fronts(slotted only) and about 12 days on the rears. I'm running Hawk DTC-70's on the fronts and 60's on the rears. My car has 700 rwhp and is probably in the 3900# range. I run Michelin pilot sports( r compound) 265x18f, 285x18r. I'm getting my next set cryo'd to see if that helps. I also read that you can buy pre seasoned rotors from Baer. Maybe I'll try that. I am also interested to see if the dba's fit. I want to run this car for 2 more summers and then build a dedicated track car, but this break issue is getting expensive!

Let me know what you do and how it works and I will do the same.

BJ

 

[kevinatfms]

i have only gone through one set of rotor discs and went back to the drilled and slotted. they stop fine for me and my setup is a basic heads cams car and most weight pulled out so im not too heavy, im just trying to figure out it i really need the 14" kit, instead of stocker calipers with the 2 piece dba's and the other mandatories.

 

[Kaldar142]

The biggest advantage to a 14" rotor is the thermal capacity and the increased surface area for greater braking torque, but in the end the stopping ability comes down to the tires.

With that being said, if you're not having any brake fade or heat related issues i see no reason to go with a 14" setup.

IMO, if you continue to track the car and don't want to waste money on replacing rotors all the time i would just use some OEM take offs / blanks as they are the cheapest solution and the easiest ones to source. (Napa + OEM take off)

 

[kevinatfms]

see i have the 14" baer kit right now but i am contemplating reducing mass even more by going to OEM calipers and DBA 2 piece rotors....

i understand the 14" thermal capacity, i have only had braking problems on one session around VIR and that was during a 30min practice test and tune.

i guess ill stick with what i got for now and if i feel the need to go to something else it will just need to go with the know gt500 setup for ease of rotor replacement along with keeping my increased thermal capacity over the 12" setup.

 

[Gray Ghost GT]

Kevin, was that your car at VIR this past weekend with the SVT Cobra Mustang Club on the Grand Course? There was a car there just like yours in the Blue Group. Mike