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Old 01-02-2013, 02:14 PM   #1
indr OP
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Blue Loctite inside engine

Some components that are installed inside the engine (where hot oil runs free) ask for non-permanent thread locking agents. Is blue Loctite (242) safe to use here? Any chance of it mixing with the engine oil and causing damage?
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Old 01-02-2013, 04:10 PM   #2
dirty_sanchez
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It'll be fine.

Let it sit overnight if possible before oiling up and running the engine if possible.

Here's the unofficial Loctite thread where we try to keep all of the Loctite, Gasketing, Sealing, Bonding, Thread Sealing, Bearing mount related questions:

http://advrider.com/forums/showthread.php?t=265016

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Old 01-02-2013, 04:22 PM   #3
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A couple drops at most, geesh what could it mater
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Old 01-02-2013, 05:04 PM   #4
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Yep 242 is the right stuff. Just a couple of drops. It acts like a nylock nut in just a few minutes. The 242 will not melt or get soft from the heat of the engine. Most all of the nuts and bolts inside the engine should have 242 applied. However if it is a part, with a specific torque, once you apply thread lock the torque will no longer be accurate. There is too much drag from the thread lock.
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Old 01-02-2013, 05:45 PM   #5
dirty_sanchez
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Quote:
Originally Posted by norwstrider View Post
Yep 242 is the right stuff. Just a couple of drops. It acts like a nylock nut in just a few minutes. The 242 will not melt or get soft from the heat of the engine. Most all of the nuts and bolts inside the engine should have 242 applied. However if it is a part, with a specific torque, once you apply thread lock the torque will no longer be accurate. There is too much drag from the thread lock.
Actually anaerobic threadlockers lubricate the threads just like oil lubricates sliding surfaces between male and female threads. If anything, you run the risk of overtorqueing threaded fasteners due to the K Factor (aka Lubricity factor, T=KFD). This is why it is SO important to know if torque figures in any reassembly instructions are for lubricated or dry threads.

243 is now my workhorse medium strength threadlocker since it's now good on ferrous and non-ferrous fasteners, good to 360F, and works without cleaning and degreasing oily threaded fasteners.

242 softens at 300F, and once cured for a period of 24 hours it is completely impervious to fuels, oils, greases, brakefluid, and all other chemicals found on a motorcycle.

Welcome to the site! We all bring something unique to ADVrider. If you haven't had a chance to sit down and do a read through on the Loctite thread, pop a cold one and take a half hour to read it through.

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dirty_sanchez screwed with this post 01-02-2013 at 07:09 PM
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