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Thread locking agent
I have split the halves of my turbo brakes, performed a rebuild and am ready for reassembly. Does anyone know if there is a thread locking compound required on this reassy of the halves? If so, what type? I am not sure, since the brakes will get hot, and usually heat breaks down this compound. Loctite red, blue, green?
Any pertinent advise would be appreciated. Thanks, Paul
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) |
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06-17-2005, 11:11 AM
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anyone please...
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) |
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06-17-2005, 03:34 PM
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Banned
Join Date: Mar 2005
Location: Travelers Rest, South Carolina
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Most manuals recommend against splitting calipers because it's quite difficult to get them reassembled without leaks.
That said, I'd consult the Bentley manual you undoubtedly own, or the factory maintenance manual you own, for instructions. When I was an aircraft mechanic for money, we were required to have the appropriate manual open to the page for the task being performed. I know that you aren't going to tell us that you did this without references open on the work bench, right? 
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06-17-2005, 05:23 PM
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Stranger on the Internet
Join Date: Apr 2004
Location: Bradenton, FL
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I went down this road once before. Couldn't find info on the torque specs, o-rings, anything. You can do a search on this and now likely find something. I would replace the bolts and nuts (mine were replaced, no Loctite)
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Patrick E. Keefe 78 SC |
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06-17-2005, 05:29 PM
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FastPat,
The Bentley manual does not cover caliper rebuilds. It even says as much. The factory manual which does cover caliper rebuilds, makes no mention of thread lock compound. Perhaps John Walker could shed some light. P.S. splitting turbo calipers is not like splitting the A, M. or S style calipers on Carreras. They are like big reds in shape and configuration, only they are black.
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) |
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06-17-2005, 05:33 PM
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Ooops, Bentley says that caliper rebuilding is beyond the scope of what's considered doable by the DIY mechanic.
 It says replace calipers.Thought so. More later. |
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06-17-2005, 05:34 PM
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At $800 plus ea., I dont think so. Caliper rebuilds are covered in the 101 book, but are for standard calipers, not turbos.
The reason I ask the question, is cause there felt to be some type of thd lock compound on disassy. I am leaning towards Loctite blue on reassy.
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) Last edited by Nine9six; 06-17-2005 at 05:39 PM.. |
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06-17-2005, 05:37 PM
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Stranger on the Internet
Join Date: Apr 2004
Location: Bradenton, FL
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I recommend calling John at Goldline Brakes in Seattle. He is on the web, did my calipers, reasonable, and very nice work.
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Patrick E. Keefe 78 SC |
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06-17-2005, 05:44 PM
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Yes, the the factory manual says Turbo (incl. Turbo Look) brake caliper bridging bolts require 43 ftlbs and no thread locking compound.
Please let me reiterate, I used to turn wrenches for a living, and I wouldn't split a caliper on my car because in my opinion, brakes are life support equipment, much like the regulator for a scuba diver. This is for a pro. I replace brake hoses, calipers, and the like; but no caliper rebuilds. |
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06-17-2005, 05:49 PM
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Quote:
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06-17-2005, 05:52 PM
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Thank you to both Pats.
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) |
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06-18-2005, 06:57 AM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
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If threadlocker was called for, i'd use green loctite. That's the stuff that's used to hold the pad box plates in my 993/S4 calipers. Both those screws are different that bridge/halve bolts.
I don't think blue is going to be the right choice since there's high heat involved here. Blue is typically for low torque applications and it doesn't accommodate heat. I'd take fastpat's advice here........
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Kevin L '86 Carrera "Larry" |
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06-18-2005, 07:13 AM
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Green is a wick-in type that is otherwise the same strength as Blue.
Note: Loctite colors are not always equal to those of other manfs.
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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06-18-2005, 09:38 AM
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1987 Porsche 911 3.2
