Cross drilled rotor myths dissolved (good reading)
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Joined: May 2005
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From: Orlando, FL
Cross drilled rotor myths dissolved (good reading)
Heres something i put together a while ago.... i got this info off acouple forums.. so no this is not my work.... im not trying to start a war or anything, just thought some of you guys may like the read... maybe even sticky worthy 
enjoy:
[QUOTE]Since I know folks will be eventually asking about this I figured it would be better to head off this disaster before it gets ugly. Here is the response I made to a different forum a few months ago after collecting some information:
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First, lets get some physics. Tell me how a heatsink with less mass will cool better? You do realize that a brake rotor acts as a large heatsink to transfer heat from the brake pads to the rotor. The heat generated from pads has to go somewhere and so it transfers to the rotor and caliper.
Porsche claims: "Discs are cross-drilled to enhance braking in the wet. The brakes respond faster because the water vapour pressure that builds up during braking can be released more easily."
They have said nothing about enhancing normal braking circumstances and the larger diameter rotors probably make up for the lack of material present in a smaller cross drilled rotor.
From Wilwood's website:
[QUOTE]Q:
enjoy:[QUOTE]Since I know folks will be eventually asking about this I figured it would be better to head off this disaster before it gets ugly. Here is the response I made to a different forum a few months ago after collecting some information:
===========
First, lets get some physics. Tell me how a heatsink with less mass will cool better? You do realize that a brake rotor acts as a large heatsink to transfer heat from the brake pads to the rotor. The heat generated from pads has to go somewhere and so it transfers to the rotor and caliper.
Porsche claims: "Discs are cross-drilled to enhance braking in the wet. The brakes respond faster because the water vapour pressure that builds up during braking can be released more easily."
They have said nothing about enhancing normal braking circumstances and the larger diameter rotors probably make up for the lack of material present in a smaller cross drilled rotor.
From Wilwood's website:
[QUOTE]Q:
Registered User
Joined: Sep 2006
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great post! but i have a question about the rear rotor which is solid on the oe s2k system is there an advantage to swapping it for a vented piece, and does it help performance on a street driven car. Also anyone who has track driven a vented rear rotor. chime in is it any better?
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Joined: Apr 2003
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From: Covington WA, USA
Originally Posted by rawdetermination,Oct 9 2006, 01:51 PM
great post! but i have a question about the rear rotor which is solid on the oe s2k system is there an advantage to swapping it for a vented piece, and does it help performance on a street driven car. Also anyone who has track driven a vented rear rotor. chime in is it any better?
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Joined: May 2005
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From: 茨城県
Slotted 
Had them on the Turbo Integra and ran many track days with them.
What are good S2K stock slotted rotors? Who sells them? Tugz_S2K those look great. Please post where to get them as I would definitely want to swap them in next time my rotors go.
Had them on the Turbo Integra and ran many track days with them.
What are good S2K stock slotted rotors? Who sells them? Tugz_S2K those look great. Please post where to get them as I would definitely want to swap them in next time my rotors go.