TwinTurbo.NET: Nissan 300ZX forum - Did you measure run out of the rotors when you
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Subject Did you measure run out of the rotors when you
     
Posted by Joe@ZSpeedperformance on November 03, 2011 at 7:56 PM
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In Reply To Brake vibration update, new pads report... posted by JMartz on November 03, 2011 at 03:01 PM
     
Message installed them? Just throwing a rotor on the front will hardly ever be 100% true. You usually have to index them to find the least amount of runout.

I always:

Clean hub of any and all rust, dirt or paint.
Install rotor, torque lug nuts (all 5) and measure runout
Try in it all 5 positions to find the least amount of runout and mark the stud and put a matching mark on the rotor so if you have to remove in the future you will know where it goes.

If you have runout in a rotor the vibration will continue to get worse as the miles are put on them, Any time there is runout in the rotor the pad hits that spot on every revolution wearing the rotor unevenly.



www.Zspeedperformance.com

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