Torque Specs

[Beach Nut]

Hey everyone, I’m new to the forum and I have a question…Why are there so many numbers, degrees, +, etc…why can’t I just get a specific number for each bolt? I just installed a Yeti Rear Track Bar which called for 75 ft lbs…the charts that are on the forum are confusing to me…can I please get some help? Thanks! 2020 JLU Sahara 3.6

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[Roky]

Hey everyone, I’m new to the forum and I have a question…Why are there so many numbers, degrees, +, etc…why can’t I just get a specific number for each bolt? I just installed a Yeti Rear Track Bar which called for 75 ft lbs…the charts that are on the forum are confusing to me…can I please get some help? Thanks! 2020 JLU Sahara 3.6

I’m not sure I understand what you’re asking, but the adjustment clamp bolts torque to 65-70 ft lbs and the the connecting bolts torque to 125-130 ft lbs…. Steersmarts uses torque ft lbs which is a lot simpler than torque to yield , or angle to torque whatever you wanna call it….

 

[Terrymo]

I’m guessing you mean some of the factory torque specs like 120 foot pounds plus 35 degrees? For aftermarket parts I follow their suggested torque specs although some of them seem to avoid torque specs in their instructions. I often use the dumbed down torque specs in the Mopar lift kit instructions if applicable.

 

[Jeep Wick]

Hey everyone, I’m new to the forum and I have a question…Why are there so many numbers, degrees, +, etc…why can’t I just get a specific number for each bolt? I just installed a Yeti Rear Track Bar which called for 75 ft lbs…the charts that are on the forum are confusing to me…can I please get some help? Thanks! 2020 JLU Sahara 3.6

The ones with degrees are torque to yield (TTY) also called stretch bolts. Meant to be used once. If you are removing and reinstalling the same part you can mark them with a paint pen and just put them back in the same position. I believe it's for crash safety, things are meant to crumple or break to protect you. Historically, I've done the spec and just estimated the angle. You should be replacing the bolts if using new parts. And as others said, aftermarket parts will often give you a fixed number.

 

[txj2go]

Getting exact results when tightening bolts is difficult. The surface finish of the bolts matters, are the bolts clean or dirty, are they rusted, are they lubricated and with what. Usually when tightening a bolt you want it to clamp 2 pieces together, you don't care about the torque you want a certain amount of clamping. So if you tighten to just a certain torque you might or might not have the clamping force that is desired. If you tighten to some small amount then go through a prescribed amount of rotation you are more likely to have the desired force. And if you are torqing to yield then you have to do that with an angular measurement more than a torque value.

(I do some work in structural steel where the clamping force is most important. There are various methods used for tightening and measuring the amount of tightening. It is hard to get a method that is easy and foolproof.)

 

[Beach Nut]

Wow…now I’m really confused! A bit too technical for me…I usually set a torque on my wrench and pull until it clicks…

 

[Beach Nut]

I’m installing the back half of my Clayton kit, Upper and Lower Control Arms…along with their 2.5” springs…my JKS springs didn’t hold up..and settled way too much, in my opinion. I even have a 3/4” spacer on the front. I had an XJ years ago that was awesome, ARB/OME. I bought Clayton cuz I like buying American! I just saw that Powerstop is Made in China! I’m replacing the brakes also at 50k miles…unfortunately, the powerstop kit is sitting in my garage. Does anyone know of an American company that does brakes for JLs? Thanks y’all!

 

[58Willys]

Wow…now I’m really confused! A bit too technical for me…I usually set a torque on my wrench and pull until it clicks…

Google torque to yield bolts. Pretty simple, torque to the spec, then turn another specified number of degrees.

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