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08-19-2013, 09:37 AM | #1 | |
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Lightest Brakes or BBK?
This will be one of the later mods I do, but I'm so ignorant on the subject, I thought I'd go ahead and start researching now. I read somewhere on here where some guy was throwing together his own big brake kit from various components. Like one brand of rotor + a different brand caliper, and so on.
So I'm wondering what is the lightest possible combination, regardless of heat tolerance and stopping power. Not that those aspects aren't equally important as weight reduction, but I don't want to be overwhelmed with too many variables just yet. My plan is to learn what's light first, then amongst the lightest of components, research which parts are known to be poor performers and which are excellent performers. I will start doing my own tracking down of weight numbers, but hopefully we can get some insight from experts, which I certainly am not. I'd like to make this thread as rich as my Lightest Exhaust, Headers, and Front/Over/Mid Pipes thread. Unsprung weight, son! Here are all the stock weights stolen from the Official Component Weights & Weight Reduction Thread: Quote:
Weights listed are per corner. Complete BBK Kits Front: 31.2lbs - OEM (Source) 21.0lbs - AP Sprint kit (Source) 16.7lbs - Wilwood BBK for WRX (Source) Calipers Front: 7.8lbs - OEM (Source) 7.4lbs - AP Racing Formula Big Brake Kit (Source) 5.4lbs - AP Racing CP8350 Essex "Sprint" and "Endurance" caliper (Caliper + bracket) (Source) ~5lbs - Ksport ProComp 8 Pot Front (Source) ~5lbs - Ksport ProComp 6 Pot Front (Source) 4.8lbs - AP Racing CP8350 Essex "Sprint" and "Endurance" caliper (Caliper only) (Source) Rear: 5.4lbs - AP Racing CP8350 Essex "Sprint" and "Endurance" caliper (Caliper + bracket) (Source) ~5lbs - Ksport ProComp 4 Pot Rear (Source) 4.8lbs - AP Racing CP8350 Essex "Sprint" and "Endurance" caliper (Caliper only) (Source) 2.8lbs - OEM (Source) Rotors Front: 18.2lbs - AP Racing Formula Big Brake Kit (Source) 17.0lbs - OEM (Source) 12.2lbs - AP Racing CP3862 "Sprint" (ring + hat + hardware) (Source) 11.2lbs - AP Racing CP3862 "Sprint" (ring only) (Source) Rear: 13.2lbs - OEM (Source) Pads Front: 1.8lbs - OEM (Source) Rear: 0.8lbs - OEM (Source)
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Last edited by Anthony; 08-21-2013 at 12:15 AM. |
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The Following 2 Users Say Thank You to Anthony For This Useful Post: | diss7 (10-29-2013), ZionsWrath (08-19-2013) |
08-19-2013, 09:42 AM | #2 |
Weight Nazi
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Apparently OEM calipers weigh 7.8lbs, and the OEM front discs weigh ~17.2lbs. I got this info from this page: http://ft86speedfactory.com/ap-racin...e-kit-743.html
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08-19-2013, 09:46 AM | #3 |
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I think the consensus is if you are going to track your car a good amount a BBK will over time be more economical as well as providing the weight savings. I too am looking at brakes but until my commute is not 50 miles/day year round I don't want to get BBK and have it eaten by road salt
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The Following User Says Thank You to ZionsWrath For This Useful Post: | CSG Mike (08-19-2013) |
08-19-2013, 10:02 AM | #4 |
Weight Nazi
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Yes, I've read this too, but it seems like you'd have to go through a LOT of pads... er... rather... would have gone through a lot of OEM-style pads before you'd come anywhere close to breaking even financially, considering a full BBK costs thousands of dollars. Your best chance of making yourself (or maybe the wife) feel better by saying "it was an economical decision" is to get one ASAP to cut down on the number of small pad purchases.
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08-19-2013, 10:04 AM | #5 |
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foreveralone...
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The Following 2 Users Say Thank You to ZionsWrath For This Useful Post: | Anthony (08-19-2013), Anthonytpt (08-19-2013) |
08-19-2013, 11:31 AM | #6 |
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AP Racing CP8350 Essex "Sprint" and "Endurance" caliper: 5.4lbs (Caliper + bracket)
AP Racing CP3862 "Sprint" rotor: 11.2lbs (ring only), 12.2lbs (ring + hat + hardware) AP Racing CP3908 "Endurance" rotor: 16.4lbs (ring only), 17.6 lbs (ring + hat + hardware) The AP Racing Calipers and rotor setups use a 21mm pad (16mm pad material) vs the 15mm pad (10mm pad material) of the stock setup and many BBKs. Additionally, these setups use 32mm thick rotors, instead of 28mm thick rotors of many common BBKs (e.g. Stoptech). Anyone local is welcome to stop by our shop and hold these parts in their hands to see how light they are. Sprint template: http://www.essexparts.com/media/down...eltemplate.pdf Endurance template: http://www.essexparts.com/media/down...eltemplate.pdf Yeah, we love our setup. We have a long term (1 year) review coming soon. |
The Following User Says Thank You to CSG Mike For This Useful Post: | Anthony (08-19-2013) |
08-19-2013, 11:41 AM | #7 | |
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Quote:
220 (average brake pad cost for AP CP8350) x2 + 158 x2 = 796 for brakes for ~25 track days 210 (average brake pad cost for stock caliper) x6 + 110 x12 = 2580 for brakes for ~25 track days with OEM brakes These figures don't include the brake fluid you're going to have to change more often with the OEM brakes, or the labor (or time) you have to put into constantly swapping pads and rotors. This is why we decided to get a BBK very early in our BRZ's life. Initially, we saw the WRX front brakes and thought the car may have been adequately braked from the factory, but it turns out that even with the lower weight and power output compared to the WRX, the brakes were still insufficient when it came to reducing operating cost. We were, however, successful in preventing fade on track by stepping up to extremely aggressive compounds with the stock brake rotors, but this is not ideal. I do this on my personal s2k, and I've gone through at LEAST 40+ rotors and 20+ sets of brake pads. If only getting a BBK to fit on a s2k were easy... |
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08-19-2013, 11:48 AM | #8 | ||
Weight Nazi
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Quote:
Quote:
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08-19-2013, 11:53 AM | #9 | ||
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Quote:
Please do keep in mind that those rotors are directional. Quote:
I think the record for a single customer for the FR-S/BRZ is 6 sets of race pads in the last year already. We did advise him, as well as other regulars, to get a BBK for long term savings... |
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08-19-2013, 11:58 AM | #10 | |
Weight Nazi
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Quote:
I mean if the company markets them as front or rear only, it seems like I should keep them separated here. On the other hand, if it's common knowledge that rotors can easily be made to work on either end, then maybe I should just have one list of rotors instead of dividing them up into front and rear. I'm a super noob when it comes to big brake kits.
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08-19-2013, 12:24 PM | #11 | |
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Quote:
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08-19-2013, 12:28 PM | #12 |
Weight Nazi
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So both the rotors you listed are marketed as front rotors?
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08-19-2013, 01:35 PM | #13 |
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08-19-2013, 01:56 PM | #14 | ||
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Quote:
Quote:
I'm paying about $190/set for front race pads (Hawk or Carbotech) and $40/rotor for front rotors (Centric premium). |
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