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Brake Caliper rotation play


triple_B

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Hey all,

in the below links you will find videos showing the rotational movement of my front drivers side stock caliper. I compressed the caliper cyclinders and put in old pads to create space to show extreme rotation.

with good pads and compressed cyclinder the caliper will still rotate a bit.

I am getting quite a bit of wobble and steering wheel gerk when on the track. the wobble worsens as a session progresse, as if heat buildup makes it worse.

any ideas? has the caliber warped/ stretched after two years of hard lapping days? or are the guide pins toast?

 

I use Cryo rotors and hawk DTC-70 pads. im a really late hard braker. my pads last a long time and ive never boiled fluid.

rotors get hot though. after a 20 min track session and a one lap cool down of 4 minutes the rotors can be 800*.

 

thanks for any info

 

[ame=http://www.youtube.com/watch?v=VTw2vTZwkYs]2007 Legacy GT front caliper guide pin rotation top/inside - YouTube[/ame]

 

[ame=http://www.youtube.com/watch?v=xQ2o6x7T-d4]2007 Legacy GT front caliper guide pin move and rotation - YouTube[/ame]

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true it does squeeze but when caliper squeezes pads I was curious if/how it could be jolted around and create vibration...which I am feeling.

I change pads dozens of time a year (track pads) and over the last 20 years and I cant seem to recall that much play...but than again I cant recall being concerned.

just curious if other recall such play (lol).

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