Trench
Well-Known Member
Full disclosure, I don't. Or at least I haven't in the past but maybe I should be. Let me know what you do, I have read anywhere from 10 - 30% reduction in the setting when using thread locker.
This makes no sense to me. Torque settings are when the threads and the head of the bolt are lubricated and slide against one another. NOT lubricating them is a good way to not get enough gripping power since the friction of the threads and bolt head reduce the effective torque, even though the torque wrench clicks and/or shows proper torque.I've read this too. I think it's because the thread locker is lubricating the threads which changes how far the nut or bolt will turn for any given amount of torque. It's the same for oiled or greased threads.
I've never followed it myself though.
Basically, a dry bolt will drastically increase friction, and the torque required to tighten the bolt will increase, thus making you think the proper torque has been applied when actually, it hasn't. A bolt is tightened with oil not only on the threads, but under the head too to achieve the designed torque. Threads in the hole should be clean and chased too as any dirt or damaged threads will affect applied torque. I have never had an issue with thread locker, affecting torque, and just use the factory spec. I also use ARP thread sealer when bolts go to water, and use the factory spec too. The only case I am aware of is when using ARP Assembly Lube for their bolts/studs/nuts. The spec on the included instructions are for their included lube, but in the absence...This makes no sense to me. Torque settings are when the threads and the head of the bolt are lubricated and slide against one another. NOT lubricating them is a good way to not get enough gripping power since the friction of the threads and bolt head reduce the effective torque, even though the torque wrench clicks and/or shows proper torque.
and I know you didn't say this, but just so no one else misunderstands: Dry torque is a new, clean application where the threads and bolt are perfect. Put a torque wrench on a dry, dirty, $hitty thread and bolt and you will definitely NOT get appropriate results!!!Example of dry and oiled threads:
View attachment 1104646
Also, the torque applied needs to be the spec torque plus the running (rundown) torque.
As far as "Loctite" goes, call and ask them. They have tons of products...they might not recommend a torque reduction for some of their products.
That's a great idea, I just sent them a message and i will post the reply.As far as "Loctite" goes, call and ask them. They have tons of products...they might not recommend a torque reduction for some of their products.