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Old Mar 26, 2013 | 06:50 PM
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Default Which thread locker

Right I've never used this before and been told to use it on my flywheel bolts which have to be done up to 68Nm so which thread locker do I need?

Thank you
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Old Mar 26, 2013 | 07:20 PM
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If its for oil retention we use loctite 577, if its dry we sometimes use loctite 243
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Old Mar 26, 2013 | 07:29 PM
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Originally Posted by the_frozen_one
If its for oil retention we use loctite 577, if its dry we sometimes use loctite 243
Ok cheers bud its for flywheel bolts, when i looked up loctite there was lots of versions all with different break away points, Low=6Nm, Medium=26Nm, High=38Nm what ever this means!
But also the low an medium cost Ł8 and the high costs Ł180

Last edited by doga-ot; Mar 26, 2013 at 07:30 PM.
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Old Mar 26, 2013 | 07:37 PM
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Originally Posted by doga-ot
Ok cheers bud its for flywheel bolts, when i looked up loctite there was lots of versions all with different break away points, Low=6Nm, Medium=26Nm, High=38Nm what ever this means!
But also the low an medium cost Ł8 and the high costs Ł180
I saw that its for flywheel bolts but don't know if they hold back oil on your engine. Low/medium will be fine
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Old Mar 26, 2013 | 07:40 PM
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Normally Blue for hand tools, red for permanent power tools
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Old Mar 26, 2013 | 07:46 PM
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You only need a tiny amount on the threads aswell, you can burst/crack the crank if you put loads in the hole then torque the bolts up.
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Old Mar 26, 2013 | 07:49 PM
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ok so do I put few drops on thread or in the whole?
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Old Mar 26, 2013 | 07:51 PM
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Couple of drops on the thread of the bolt itself will be fine.
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Old Mar 26, 2013 | 07:54 PM
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cool. But please can some one explain to me what the break away thing is about because surely the whole point is to stop it coming loose and if bolt torque rate is 68Nm then you'd expect the thread lock breaking point to be higher than the bolt torque
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Old Mar 26, 2013 | 08:03 PM
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Break away point is the amount of force it takes to move the bolt with out being torqued up tight, I.e. in lose
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Old Mar 26, 2013 | 09:23 PM
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Don't use the high strength stud lock as it's only designed to be removed by applying heat (blow torch job). I would suggest medium strength, two drops onto the bolt thread, then fit and torque straight away.
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