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  #1  
Old 07-07-2011, 12:24 PM
shelly shelly is offline
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front brake rotors

any recommendations for replacement front rotors
don't need drilled and slotted
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  #2  
Old 07-07-2011, 02:44 PM
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Re: front brake rotors

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Originally Posted by shelly View Post
any recommendations for replacement front rotors
don't need drilled and slotted
When I replace mine I will either go with Centric Cryo treated rotors or r1concepts cross drilled. Cryo treatment and cross drilling will help to avoid "warping" down the road as will switching to carbon-metallic composite pads. It isn't about racing as much as it is about avoiding "warped" rotors.
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  #3  
Old 11-27-2011, 05:27 PM
92snowmachine 92snowmachine is offline
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Re: front brake rotors

cryo treating rotors doesn't keep them from warping.
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  #4  
Old 11-27-2011, 06:23 PM
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Re: front brake rotors

drilled and slotted are best for dissipating generated heat.
i have a set on my XT6, and will get a set for my Next Subaru.
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  #5  
Old 11-27-2011, 09:23 PM
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Re: front brake rotors

Quote:
Originally Posted by Huskymaniac View Post
When I replace mine I will either go with Centric Cryo-treated rotors or r1concepts cross-drilled. Cryo treatment and cross-drilling will help to avoid "warping" down the road as will switching to carbon-metallic composite pads. It isn't about racing as much as it is about avoiding "warped" rotors.
Precision Brakes and Stoptech are in agreement that brake judder and vibration is caused by brake rotors, which have become warped from excessive heat, is a myth.

See article HERE

I am using the Raceconcepts dimples/ slotted rotors and Akebono Pro_ACT full ceramic pads all around.

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  #6  
Old 11-27-2011, 10:02 PM
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Re: front brake rotors

Quote:
Originally Posted by svxcess View Post
Precision Brakes and Stoptech are in agreement that brake judder and vibration is caused by brake rotors, which have become warped from excessive heat, is a myth.

See article HERE

I am using the Raceconcepts dimples/ slotted rotors and Akebono Pro_ACT full ceramic pads all around.

.
I agree and have actually spoken with the head Stoptech guy. That's why I put warped in quotation marks. It really comes down to removing heat. Supposedly drilling is better than slots for removing heat. Does cryo treating help with heat? Supposedly it does but I couldn't tell you why. I would think that cross drilling and using pads with high thermal conductivity is the best combination. But if the cross drilling isn't done right, the rotors can crack.
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  #7  
Old 11-27-2011, 10:15 PM
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Re: front brake rotors

Here is a link I found on cryo treating:

http://www.cdpautomachine.com/ecatalog/cryo.html

It claims that surface uniformity is improved, which should help spread out the heat. It also claims that thermal conductivity is better. Finally, it claims that cracking from residual stress is reduced as is wear. So maybe a rotor that is cry treated before cross drilling is the best bet. You get the benefits of cross drilling, avoid the cracking issues, get better thermal properties, get a more uniform surface and get more miles before the rotors get too thin, which also leads to localized overheating.
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1996 Polo Green Subaru SVX LSi, 168,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 5W50 FS (3qt) and 5W30 High Mileage (4qt) Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, Centric Rotors, Power Stop Evolution Carbon Fiber Ceramic Brake Pads
2005 Gray Acura RL, 165,XXX miles, Redline D4 ATF with Lubegard Platinum Protectant, Mobil 1 5W20 High Mileage Extended Performance Oil
2009 Red Toyota Venza, 123,XXX, Mobil 1 5W30 High Mileage Oil
1992 Red Ferrari 348 ts, 82,XXX, Redline everything
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  #8  
Old 11-28-2011, 04:30 PM
92snowmachine 92snowmachine is offline
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Re: front brake rotors

Quote:
Originally Posted by Huskymaniac View Post
Here is a link I found on cryo treating:

http://www.cdpautomachine.com/ecatalog/cryo.html

It claims that surface uniformity is improved, which should help spread out the heat. It also claims that thermal conductivity is better. Finally, it claims that cracking from residual stress is reduced as is wear. So maybe a rotor that is cry treated before cross drilling is the best bet. You get the benefits of cross drilling, avoid the cracking issues, get better thermal properties, get a more uniform surface and get more miles before the rotors get too thin, which also leads to localized overheating.
i have heard lots of claims for cryo treating but they always back down when questioned hard or some sort of warranty to back their claims is asked for. my friend with a machine shop sends parts out for freezing before machining them and says they machine very well after being frozen but it's easier to machine them, and they don't wear out his tools as fast. he didn't know why they seem softer but this is in contradiction to their claims. i have seen lots of parts cryo treated from spark plugs (for mileage) and distributor drive gears(to prevent sheering the gears) to brake rotors (to prevent warping and supposedly last forever) and tools (to make them unbreakable). all have had the same results, pretty much none.
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  #9  
Old 11-28-2011, 05:02 PM
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Re: front brake rotors

I'm just running plain NAPA rotors all around. This may have something to do with the fact that I got the parts at cost through my old shop and paid about $250 for NAPA's premium line of parts, but I've been very satisfied with them.

Between a decent ceramic pad, good quality rotors, and fresh brake fluid I'm absolutely confident that the average driver, even one who goes for the occasional spirited romp, will see no problem. Realistically if you're putting enough heat into your brakes to worry about higher performance parts, you shouldn't be doing it on public roads and should equip your car accordingly.
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Old 12-05-2011, 04:08 PM
92snowmachine 92snowmachine is offline
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Re: front brake rotors

Quote:
Originally Posted by Crazy_pilot View Post
I'm just running plain NAPA rotors all around. This may have something to do with the fact that I got the parts at cost through my old shop and paid about $250 for NAPA's premium line of parts, but I've been very satisfied with them.

Between a decent ceramic pad, good quality rotors, and fresh brake fluid I'm absolutely confident that the average driver, even one who goes for the occasional spirited romp, will see no problem. Realistically if you're putting enough heat into your brakes to worry about higher performance parts, you shouldn't be doing it on public roads and should equip your car accordingly.
i have napa rotors and pads as well. i opted for the slotted and cross drilled but probably don't need them. good thing about napa is if you have any issue you can return them to any napa. they rarely make a fuss even if they know you are returning something that you have abused or broken.
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