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8Likes

03-25-2013, 01:41 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
I spoke with Peter: (1) they currently are using Wilwoods for the big brake option, and (2) no problem using big brakes with "standard" Jag rear end.
So another way to frame the question is that, for mostly street driving, ranging from cruising to aggressive, are the Wilwoods a good option? If so, what pads are best for this scenario? Will the Wilwoods work well if they aren't heated/cycled as hard as they would be on a track?
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03-25-2013, 01:45 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by lippy
So another way to frame the question is that, for mostly street driving, ranging from cruising to aggressive, are the Wilwoods a good option? If so, what pads are best for this scenario? Will the Wilwoods work well if they aren't heated/cycled as hard as they would be on a track?
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The big brakes are fine for the street, Wilwood or Sierra. I use the soft Hawk pads -- they do fine for the street, and work better the warmer you get them. I don't have the "pop, click" noise, but they will squeal a bit when cold. If you want to see some nice pad graphs for temps, click here: Pad Friction Graphs
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03-25-2013, 02:11 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Quote:
Originally Posted by patrickt
The big brakes are fine for the street, Wilwood or Sierra. I use the soft Hawk pads -- they do fine for the street, and work better the warmer you get them. I don't have the "pop, click" noise, but they will squeal a bit when cold. If you want to see some nice pad graphs for temps, click here: Pad Friction Graphs
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Thanks Patrick. The ERA guys sure are on top of things - especially for a small company. I checked out the graphs in the link. Am I interpreting this incorrectly, or does it look like Polymatrix A has a higher coefficient of friction across all temps (100-1300F), versus all of the others, and should be the better choice, unless the wear is significantly worse? But those pads are intended for racing only, and not street use.
Last edited by lippy; 03-25-2013 at 02:21 PM..
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03-25-2013, 02:37 PM
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CC Member
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Join Date: Apr 2007
Cobra Make, Engine: # 757 ERA 427 SC , 482 Al. big block
Posts: 898
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Not Ranked
Be careful about those graphs as you can drive yourself crazy with information overload on things like initial bite , coefficient of friction etc . Just call Wilwood ( if that`s who you go with ) and tell them type of driving , car weight , rotor material etc and ask for a pad recommendation . I use Hawk pads for the street , called them and used what they recommended . In my experience , stay away from racing pads for the street . Racing pads generally need a higher temp to really come into their own and are more aggressive on the rotors . On mine , it takes about one lap for the pads and rotors to really start working . On the Hawk street pads , they work from the beginning with ok pedal pressure on the street .
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03-25-2013, 02:39 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Quote:
Originally Posted by lippy
So another way to frame the question is that, for mostly street driving, ranging from cruising to aggressive, are the Wilwoods a good option?
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I thought I told you this on page 1. 
Just tell them to ship you the car with the Wilwoods and street pads. When you go tracking, ask for the 'track pads'. Forget heat cycles, coefficients of friction and the atomic weight of lint.
Overthinking............................ 
__________________
Chas.
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03-25-2013, 02:59 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Hawk makes it pretty easy (last time I bought, that is). There were only two choices: Soft and Hard. 
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