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Thread: Need Urgent Help With Brembo Calipers!!!....

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    2005_CTS-V's Avatar
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    Exclamation Need Urgent Help With Brembo Calipers!!!....

    I just painted my calipers yesterday and now need to get them back together so I have a car to drive....does anyone know the torque spec's for reassembling the calipers? Hopefully someone can hit me back soon. Wrench in hand and ready. Thanks guys.
    -Josh


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    Re: Need Urgent Help With Brembo Calipers!!!....


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    Re: Need Urgent Help With Brembo Calipers!!!....

    The caiiper (bracket) bolts should be coated in threadlocker and allowed to dry (cure) about ten minutes. Torque is 96 ft. pounds. I have trouble getting the torque over 90 ft. pounds.
    Last edited by darkman; 02-01-13 at 07:25 AM.

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    Re: Need Urgent Help With Brembo Calipers!!!....

    The brake caliper overhaul section of the FSM tells you not to separate the caliper halves, so there's no torque spec listed. The bleeders are 124lb-in.
    '05 Stealth Grey CTS-V, 19x8.5/10" CCW T140s with Toyo Proxes T1 Sports (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...

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    Re: Need Urgent Help With Brembo Calipers!!!....

    Torque the caliper bolts PRIOR to loctite drying.

    And read - bleeders are INCH POUNDS.

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    Re: Need Urgent Help With Brembo Calipers!!!....

    Did you separate the two halves of the calipers? If you did, I'm impressed you got them apart! I tried when I had mine powder coated and even with a 1/2 in socket with massive breaker bar, the heads on the nuts just wanted to strip before cracking loose.

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    Re: Need Urgent Help With Brembo Calipers!!!....

    Quote Originally Posted by DrSpeed View Post
    Torque the caliper bolts PRIOR to loctite drying.
    See attached.

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    Re: Need Urgent Help With Brembo Calipers!!!....

    Quote Originally Posted by darkman View Post
    See attached.
    what?

    Do you:

    1. Apply loctite to bolts
    2. Tighten them on the wheel end
    3. Wait for the loctite to dry/cure
    4. Then torque to spec?

    You torque before the loctite sets, otherwise, you break the loctite free.

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    darkman's Avatar
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    Re: Need Urgent Help With Brembo Calipers!!!....

    Quote Originally Posted by DrSpeed View Post
    what?

    Do you:

    1. Apply loctite to bolts
    2. Tighten them on the wheel end
    3. Wait for the loctite to dry/cure
    4. Then torque to spec?

    You torque before the loctite sets, otherwise, you break the loctite free.

    I follow the instructions in the GM Service Manual which says to (1) apply the threadlocker (GM 12345493) two-thirds of the threaded length of the caliper to knuckle mounting bolts with no gaps in the applied threadlocker; and (2) allow the treadlocker to cure approximately ten minutes before installation. GM's 12345493 threadlocker is Pematex Threadlocker Red and does not fully cure (or set) for 1-24 hours depending on temperature. Since it is an anaerobic material it cannot fully cure in the presence of air. The ten-minute curing time prescribed by GM is presumably required to ensure the threadlocker stays in the threads as opposed to be displaced by the rotation of the bolt (like a an Archimedes screw).
    Last edited by darkman; 02-01-13 at 07:28 PM.


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