Wilwood BBK for WRX - Fit to BRZ - Page 4 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SubieNate · 04-04-2013, 01:39 AM

Quote:

Originally Posted by OrbitalEllipses

Thickness = heat capacity. Thinner rotors will overheat quicker with abuse, ultimately ending in cracks or other failure.

If you read his posts, he says that it's the diameter of the wheels and tires is larger. My brother's WRX came stock with 215/45-17's, exactly the same as our car. Plus, his car weighs 500lb more than mine. Now, regardless of bias, how are the rotors going to crack any more severely or quickly on a 500 lb lighter car running exactly the same wheels? I just don't see it.

Would I run these? Not unless I did the calcs for the bias. But if the bias isn't shifted negatively, I don't see how there's any reason they should fail compared to using them on a WRX.

Cheers
Nathan

OrbitalEllipses · 04-04-2013, 01:52 AM

Referring to Wilwood's post? It sounds like marketing bullshit. Tire compound has more to do with braking than tire diameter...

SubieNate · 04-04-2013, 02:05 AM

Quote:

Originally Posted by OrbitalEllipses

Referring to Wilwood's post? It sounds like marketing bullshit. Tire compound has more to do with braking than tire diameter...

Yeah, that's what I was questioning.

post_break · 04-04-2013, 10:40 AM

This has to be the most asinine thread I've ever seen. The FRS/BRZ uses the same brakes as the 08 WRX. So naturally a user purchases a wilwood kit for an 08 WRX. People lose their shit and a wilwood rep comes in here and specifically says they will fail if tracked.

This doesn't make any sense.

People are tracking their car with stock brakes and upgraded fluids and they aren't out right failing. How on earth could a wilwood kit be that shitty that it's only marginally better than stock?

Wilwood is just trying to scare everyone with a BRZ or FRS into buying "86" designed rotors and calipers. I bet most people, myself included, don't track their car hard enough for these to fail.

If you're that scared of the heat run brake ducts.

I'm just going to keep face palming.

OrbitalEllipses · 04-04-2013, 10:58 AM

Quote:

Originally Posted by post_break

This has to be the most asinine thread I've ever seen. The FRS/BRZ uses the same brakes as the 08 WRX. So naturally a user purchases a wilwood kit for an 08 WRX. People lose their shit and a wilwood rep comes in here and specifically says they will fail if tracked.

This doesn't make any sense.

People are tracking their car with stock brakes and upgraded fluids and they aren't out right failing. How on earth could a wilwood kit be that shitty that it's only marginally better than stock?

Wilwood is just trying to scare everyone with a BRZ or FRS into buying "86" designed rotors and calipers. I bet most people, myself included, don't track their car hard enough for these to fail.

If you're that scared of the heat run brake ducts.

I'm just going to keep face palming.

Not the exact same setup as the 08 WRX, but this thread is full of generalities. Speaking to the "failure" ... yeah, we've identified that as marketing BS. No one's losing their shit.

Wilwoods probably fail because they're Wilwoods, lawl.

CSG Mike · 04-04-2013, 11:01 AM

Quote:

Originally Posted by OrbitalEllipses

Thickness = heat capacity. Thinner rotors will overheat quicker with abuse, ultimately ending in cracks or other failure.

Yeah, we abuse em. Then again, they've been looking like this for a while now and are still working fine. We do take spare rotors just in case though, and this is arguably the most cost effective system available for the car

Most kits use a 28mm thick rotor, and 16mm pad. The Essex "Sprint" kit uses a 32mm thick rotor and 21mm pads.

Are there published specs for the Wilwood?

OrbitalEllipses · 04-04-2013, 11:28 AM

Quote:

Originally Posted by CSG Mike

Most kits use a 28mm thick rotor, and 16mm pad. The Essex "Sprint" kit uses a 32mm thick rotor and 21mm pads.

Are there published specs for the Wilwood?

From the first post http://www.wilwood.com/BrakeKits/Bra...temno=140-9193

"Width (In.): 0.81" Thin rotors.

CSG Mike · 04-04-2013, 12:38 PM

Quote:

Originally Posted by OrbitalEllipses

From the first post http://www.wilwood.com/BrakeKits/Bra...temno=140-9193

"Width (In.): 0.81" Thin rotors.

Sorry, still sleep deprived from yesterday's shoot.

20-21mm rotors... wow.

OrbitalEllipses · 04-04-2013, 12:52 PM

Quote:

Originally Posted by CSG Mike

Sorry, still sleep deprived from yesterday's shoot.

20-21mm rotors... wow.

Yep, not even legal for SCCA autocrossing so I don't know why Bill even jumped into this thread.

Scooby South · 04-04-2013, 01:03 PM

Quote:

Originally Posted by OrbitalEllipses

Yep, not even legal for SCCA autocrossing so I don't know why Bill even jumped into this thread.

Because they were mine to begin with.. and I couldn't use them and was following the progress with them since they make a decent upgrade over stock for not alot of money.. some of us are not Baller.. so Pricepoint and Function play a BIG part of Mods... Some of you guys are WOUND WAY to tight for sure..and you also realize the factory rotors are only 22mm, Right??? of course they aren't for continual Track use..

Bill

OrbitalEllipses · 04-04-2013, 01:10 PM

Quote:

Originally Posted by Scooby South

Because they were mine to begin with.. and I couldn't use them and was following the progress with them since they make a decent upgrade over stock for not alot of money.. some of us are not Baller.. so Pricepoint and Function play a BIG part of Mods... Some of you guys are WOUND WAY to tight for sure..and you also realize the factory rotors are only 22mm, Right??? of course they aren't for continual Track use..

Bill

I saw your post when you got them and when you realized they were illegal; wasn't aware this was YOUR set.

Scooby South · 04-04-2013, 01:34 PM

^^^ yep.. thats why the personal interest.....Trust me I had these researched LONG before I was able to purchase them.. just didn't realize the rotors were thinner than stock by 1.5 mm.. everything else would have worked according to the rules.

Bill

swift996 · 04-04-2013, 06:22 PM

WRX Kit:
Type: Dynapro Radial Mount
Piston Count: 4
Piston Area (In²): 4.12
Piston Type: Aluminum
Mount Type: Radial
Brake Pad Area (In²): 6.36
Brake Pad Volume (In³): 3

BRZ/FRS Kit:
Type: Forged Narrow Superlite 6R
Piston Count: 6
Piston Area (In²): 4.04
Piston Type: Stainless
Mount Type: Radial
Brake Pad Area (In²): 8.2
Brake Pad Volume (In³): 3.8

OrbitalEllipses · 04-04-2013, 06:30 PM

Looks like the 6pot moves bias even further rearward, with 12.88" rotors that are 1.1" thick.

04-04-2013, 06:22 PM	#55
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 955 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	WRX Kit: Type: Dynapro Radial Mount Piston Count: 4 Piston Area (In²): 4.12 Piston Type: Aluminum Mount Type: Radial Brake Pad Area (In²): 6.36 Brake Pad Volume (In³): 3 BRZ/FRS Kit: Type: Forged Narrow Superlite 6R Piston Count: 6 Piston Area (In²): 4.04 Piston Type: Stainless Mount Type: Radial Brake Pad Area (In²): 8.2 Brake Pad Volume (In³): 3.8 __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

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04-04-2013, 01:52 AM	#44
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,890 Times in 2,903 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	Referring to Wilwood's post? It sounds like marketing bullshit. Tire compound has more to do with braking than tire diameter...

04-04-2013, 06:30 PM	#56
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,890 Times in 2,903 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	Looks like the 6pot moves bias even further rearward, with 12.88" rotors that are 1.1" thick.

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