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Question about Rotors

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Old Oct 27, 2006 | 02:23 AM
  #11  
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Originally Posted by 2NR Werks,Oct 27 2006, 12:00 AM
4bang6 is correct you have directional and non-directional rotors. Most rotors you buy off the shelf can be used either way. When purchasing a big brake kit you need to watch the inner vanes, because usually their are directional.

How do you tell the difference after the install. In a short period of time you will begin to feel a pulsating feeling in the pedal when braking. You are now warping the rotors because they are not cooling properly. Get them resurfaced and put them on right.
Todd is right about the inner vents. The normal S2000 rotor vents are not directional. I don''t know about the big brake kit.

Good luck getting anyone to turn slotted rotors. The tip of the cutter will hit the slots and break off. I don't know od anyone who will turn them.
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Old Oct 27, 2006 | 03:15 AM
  #12  
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they can be turned on the brake lathe ... but the cutter has to be set very shallow to avoid chipping. This may require several runs but it can be done. I had a friend turn mine for me for years and never had a chipping problem. I'm just not sure what it would cost at a brake shop (or if they would even try it). My bill for that usually listed alcohol and food at a local Hooters!

the other option is a machine shop ... but i shudder to think how much that would cost.

side note - it is not a myth: using the correct torque settings on the wheel lugs will reduce (if not eliminate) warping of brake rotors. When the wheel&tire shops use the impact gun (and even with 'torque sticks') this affects several components at the hub ... especially the rotors. I've insisted on it for all my vehicles (particularly the ones with a 'floating' rotor) and have very few instances of warping.

hth
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Old Oct 27, 2006 | 04:45 AM
  #13  
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good thread..
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Old Oct 27, 2006 | 05:09 AM
  #14  
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Originally Posted by Bandiscoot,Oct 27 2006, 06:15 AM
they can be turned on the brake lathe ... but the cutter has to be set very shallow to avoid chipping. This may require several runs but it can be done. I had a friend turn mine for me for years and never had a chipping problem. I'm just not sure what it would cost at a brake shop (or if they would even try it). My bill for that usually listed alcohol and food at a local Hooters!

the other option is a machine shop ... but i shudder to think how much that would cost.

side note - it is not a myth: using the correct torque settings on the wheel lugs will reduce (if not eliminate) warping of brake rotors. When the wheel&tire shops use the impact gun (and even with 'torque sticks') this affects several components at the hub ... especially the rotors. I've insisted on it for all my vehicles (particularly the ones with a 'floating' rotor) and have very few instances of warping.

hth
I called three brake places and just regular automotive shops and they wouldn't touch slotted rotors. The problem is the expensive tip of the brake lathe catching and breaking the tip. Then if you get it done you need to rechanfer the holes or slots.

The problem with warping mainly isn't them warping from torquing it is heat and cold issue. When the rotors get very hot and then suddenly get cooled in a certain area that area can spontaniously change from a structure called Austenite to Martensite. Martensite is a denser molecular structure and pulls the metal's crystiline structure. That is generally what causes brake rotors warping.

Some rotors are more susceptable than others, Intrepids and Ford trucks are notoursiously bad.

This is why the controlled cooling and heating of cryogenic processing helps prevent warping. There is less if no retained Austenite in the steel's structure to change. Plus 200%-300% increase in wear resistance!

Couldn't resist the cryogenic plug!
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Old Oct 27, 2006 | 05:48 AM
  #15  
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RXDI and myself have Jeff's cryoed rotors
what about my plug?
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Old Oct 27, 2006 | 10:33 AM
  #16  
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Originally Posted by 4bang6,Oct 27 2006, 08:48 AM
what about my plug?
I like it.

Nothing like a shameless plug for crossdrilled/slotted/silver zinc plated/cryogenically processed rotors.

Now back to the thread. I like them installed with the slots turning in the direction the car is going. Unless you are in reverse.
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Old Oct 27, 2006 | 10:47 AM
  #17  
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Originally Posted by jcarlton,Oct 27 2006, 10:33 AM
I like it.

Nothing like a shameless plug for crossdrilled/slotted/silver zinc plated/cryogenically processed rotors.

Now back to the thread. I like them installed with the slots turning in the direction the car is going. Unless you are in reverse.
Since we are plugging..

Actually I am allowed to plug.

If you need any of these awesome rotors let me know

https://www.s2ki.com/forums/index.ph...T&f=5&t=429393


James
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Old Oct 27, 2006 | 10:54 AM
  #18  
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Originally Posted by vvs,Oct 27 2006, 01:47 PM
Since we are plugging..

Actually I am allowed to plug.

If you need any of these awesome rotors let me know

https://www.s2ki.com/forums/index.ph...T&f=5&t=429393


James
My exclusive wholesaler. Cheap to the public!
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Old Oct 27, 2006 | 12:13 PM
  #19  
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"Cheap to the public! "??? I know a girl like that!

i kill me (<suicidal dork!)
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Old Oct 27, 2006 | 12:31 PM
  #20  
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Here's the instructions form Stop-Tech on how to install on an S2000


So, every make has there own plan??
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