Leadership Team SLR No.77 Posted May 23, 2018 Leadership Team Share Posted May 23, 2018 ... which Loctite does everyone generally use for bolt/nut/stud locking? 270? 290? 222? 221? 243?I'm about to buy a new bottle and RS have a bewildering choice available - my car will need to be reassembled after it's back from being painted so a general purpose Loctite will be needed, but I'm also aware that I have a manifold stud that keeps refusing to stay in! Previously I've used 222.Stu. Link to comment Share on other sites More sharing options...
Sim Posted May 23, 2018 Share Posted May 23, 2018 243 is their general purpose medium strength productisn't 222 their low strength product? Simon Link to comment Share on other sites More sharing options...
revilla Posted May 23, 2018 Share Posted May 23, 2018 Always used 243 for general purpose thread locking and not had a problem with it. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted May 23, 2018 Author Leadership Team Share Posted May 23, 2018 243 it is then! Link to comment Share on other sites More sharing options...
rhauri Posted May 23, 2018 Share Posted May 23, 2018 I've always used Loctite 243 for general stuff @ ambient temperatures, particularly in my karting days.For the (exhaust?) manifold stud, you'll probably want one that can withstand high temps though?Loctite 243 has less than 50% strength at 150°C, for instance.The two below options may be better for your manifold: Loctite 272 - 75% strength @ 150°C // Breakaway torque on M10 bolts of 23 Nm Loctite 278 - 90% Strength @ 150°C // Breakaway torque on M10 bolts of 42 Nm Plenty of thread-locker options and details here though: http://www.loctite.co.uk/threadlocking-9150.htm Link to comment Share on other sites More sharing options...
Petethediesel Posted May 23, 2018 Share Posted May 23, 2018 Agreed, 243 for general use. Its designed for hand tool applications. I thought it had 75% strength at 150c though? Used it as my "go to" threadlocker on general use applications for many years. Link to comment Share on other sites More sharing options...
rhauri Posted May 23, 2018 Share Posted May 23, 2018 Unfortunately not Pete, Loctite 243 is less than 50% as below:Unless they've changed the recipe?? Link to comment Share on other sites More sharing options...
Petethediesel Posted May 23, 2018 Share Posted May 23, 2018 Thanks for that, less than I thought. Link to comment Share on other sites More sharing options...
CharlesElliott Posted May 23, 2018 Share Posted May 23, 2018 They do (or did) a selector tool that takes you through a series of questions to come to the right product. I even printed it out in case I couldn't find it again.The answer to your question is almost certainly 243 though. Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 25, 2018 Share Posted May 25, 2018 Having been working on some older cars of late and having difficulty undoing things (only snapped one bolt!) I wonder if application of a light duty thread lock would prevent corrosion between the two parts - mainly where coppa slip not appropriate.What is the POBC opinion? (sorry for the thread highjack - no pun intended!)RegardsIan Link to comment Share on other sites More sharing options...
SM25T Posted May 26, 2018 Share Posted May 26, 2018 Yes ... loctite also helps stop corrosion on threads. Link to comment Share on other sites More sharing options...
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