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| Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing. |
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05-30-2021, 04:28 PM
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#1 |
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Locktite on brake caliper bolt threads?
I'm changing out the brake pads on my 2014 BRZ. When re-installing the two bolts that attach the caliper, should I put locktite on the bolt threads?
There are people online claiming both sides - either the world will end without locktite on those bolts, or it doesn't matter. What are you guys doing? And also is 19ftlbs the correct amount to tighten the two caliper bolts? Thanks for any advice. |
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05-30-2021, 04:49 PM
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#2 |
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Searching through more threads here, I found this nice writeup:
https://www.ft86club.com/forums/showthread.php?t=24614 That and other threads confirm the 19ft lbs caliper bolt torque. But that and other writeups here on site, do not mention any use of loctite, anti-seize or other compounds on the caliper bolt threads. So I'm probably going to not use anything on the threads. Unless someone or Subaru recommends something, please let me know. |
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05-30-2021, 05:26 PM
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#3 |
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I've never heard of using loctite on caliper bolts. Just torque them to spec and you'll be fine.
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05-30-2021, 08:37 PM
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#4 | |
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About 25k miles since I last touched my calipers to swap pads, 25k before that, ~100k miles on the car total, brakes have been on and off about a dozen times, never used loctite.
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05-30-2021, 09:19 PM
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#5 |
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The screws, threads, and the associated mating surfaces are specified and manufactured to tolerances such that, if they were ever to come loose with, or without thread locker, there would be much worse things to worry about.
Unless the service manual specifies thread locker, there is no need.
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05-31-2021, 01:58 AM
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#6 |
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I'd be going with a fine bit if anti-seize before loctite.
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05-31-2021, 12:31 PM
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#7 |
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I don't think loctite would even help due to the heat.
According to the Technical Data Sheet, Loctite (blue) has an upper service temp of 300F. Moderately heavy brake use could certainly heat the calipers to above 300F. https://dm.henkel-dam.com/is/content...-2018-04-09pdf |
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05-31-2021, 12:38 PM
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#8 |
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I don't like the idea of locktite on threads that close to the sliders. Too easy to accidentally get some on the sliders and mess up a set of pads. Of course I wouldn't know about it until I need a brake job at 10k miles
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