Torque and Chrome

Please explain how i use a torque wrench?

I replaced my intake manifold and its plastic , i dont want to over tighten. I never use a torque wrench. There are 9 bolts on the intake. I have the tightening sequence instruction with the intake. I just have no idea how to torque. 18 lb/ft or 25nM , it says I may rent one free at Autozone. Please explain to me step by step after i put on the manifold, and then what? Do you hand tigthen all of them first and then use a regular ratchet and then torque em? PLease list every specific detail from then on. I have no clue. And tell me what type of Torque rench should i rent at AZ. Thanks alot

Public Comments

1. 18 lb/ft is hardly anything, basically just tighten. intake bolts dont have to be tremendously tight and especially if plastic is involved. put the manifold on, snug bolts up according to sequence and then go back over and tighten with the same sequence.
2. torque bolts first with a spanner or ratchet and socket only a firm tighten then take torque wrench and set to the desired torque ie 18ft/lb (this will be different depending on brand of wrench ask supplier to show u how .) then place correct size socket on torque wrench then use to tighten bolt, will make a clicking sound when up to tension continue doing this for all bolts then go over each one again to make sure all tensioned the same. good idea when tensioning bolts to start With centre bolts then work towards outside ones.
3. First off, make sure the threads are clean and put a few drops of oil around the underside of the bolt heads. If the torque on this manifold is 18 ft lbs - torque the bolts in three steps - paying attention to the sequence. Torque them to 9 or 10 ft lbs - then to 14 or 15 then a final torque of 18 ft lbs. And you're correct - proper torquing is more important than ever with plastic parts and light weight alloys.
4. Just tighten the bolts hand tight and then use torque wrench. Just tell them at autozone you need a torque wrench that measures foot pounds lb/ft and it needs to measure 18 lb/ft. If they dont have one that goes that low you can use a inch pound torque wrench and torque it at 216 in/lb.
5. There are two types of torque wrenches commonly used. The first and most inexpensive is the bending beam type. Use it like any socket drive wrench. It has a gage that shows the deflection of the arm of the wrench. The guage reads in NM, or ft/lbs.One look and you'll figure it out.The other is a "click" type.This one has a torque setting you adjust the wrench to.It clicks and deflects slightly once the torque setting is reached.Once again, you'll figure it out real quick.I'd just tighten the thing up evenly, good and tight with a normal 3/8 ratchet. you woun't exceede 18 ft/lbs unless your a neanderthall.