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Shims recommended on Carbotech 1521 pads?

I'm swapping pads this spring to the Carbotech 1521 pads for street. No shims included unlike some other aftermarket pads. I still have the OEM shims... should I throw them

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Old 04-18-2017, 04:25 PM   #1 (permalink)
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Question Shims recommended on Carbotech 1521 pads?

I'm swapping pads this spring to the Carbotech 1521 pads for street. No shims included unlike some other aftermarket pads. I still have the OEM shims... should I throw them on?

I couldn't find any definitive answers. I've read some say Carbotech does not recommend shims on these, but I've also read that they do. Is it model specific? Looking for some quick advice as it's in the air and 1/2 done.
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Old 04-18-2017, 06:44 PM   #2 (permalink)
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Yes, you should install the factory shims with a little bit of pure silicon lubricant. It will limit the squealing.
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Old 04-18-2017, 06:56 PM   #3 (permalink)
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That was my gut instinct, just needed some confirmation. Thanks spooler.

I used some copper brake lube on the shims where the pistons make contact, since I believe that's what the manual states. Any reason to use silicon based lube instead?

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Old 04-18-2017, 09:38 PM   #4 (permalink)
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That was my gut instinct, just needed some confirmation. Thanks spooler.

I used some copper brake lube on the shims where the pistons make contact, since I believe that's what the manual states. Any reason to use silicon based lube instead?

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Either one works fine. I prefer the Silicon based since it stays put better.
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Old 04-18-2017, 09:49 PM   #5 (permalink)
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... I used some copper brake lube on the shims ... Any reason to use silicon based lube instead?
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Either one works fine. I prefer the Silicon based since it stays put better.


Six of one; half a dozen of the other. Whichever you use, a little goes a long way.
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Old 04-19-2017, 02:28 PM   #6 (permalink)
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Last question... Reusing the slotted rotors that I had hawk pads on (both installed at same time new) . I know carbotech states to use new rotors or get them turned, but the rotors only have 1k miles on them. Can I just get away with scuffing them up thoroughly and cleaning?

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Old 04-19-2017, 06:17 PM   #7 (permalink)
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Last question... Reusing the slotted rotors that I had hawk pads on (both installed at same time new) . I know carbotech states to use new rotors or get them turned, but the rotors only have 1k miles on them. Can I just get away with scuffing them up thoroughly and cleaning?

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Yeap, folks don't even scuff them up. Just install them and go through the bedding process again. Folks change from Carbotech track pads and install the factory pads back on the car all the time.
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Old 04-19-2017, 06:59 PM   #8 (permalink)
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Cool. I was confident going into this but all the language on the carbotech faq page had me second guessing everything. I'm sure it's mostly obligatory CYA stuff.

I cleaned up the rotors anyway to remove the oxidation marks from where the old pads sat. Good to know for future reference when I change again. Thanks

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