Contents
Do you have to follow torque specs?
Applying exactly the right amount of torque is important to ensure proper clamping between the engine block and the tensioners or idler pulleys, for instance. And the consequences of applying too much or too little torque can be dire, as we’ll discuss below. …
How are torque specs determined?
Two types of tests can be run to determine a torque specification: measuring torque and angle to failure and measuring torque and angle to a specific tension. “Torque-angle to tension is more accurate, but it requires some means of measuring either bolt tension or clamp load.”
What are torque settings for?
The basic guide for torque settings. Getting these settings right helps you to control the depth of your drilling without causing any damage. When drilling holes the harder the material the higher the speed to get the best result.
Do aftermarket wheels have different torque specs?
The only difference is in checking the torque after the fact. Aftermarket wheels should have the torque rechecked after about 100 mile drive. If they are not an exact fit wheel (hubcentric) and are relying on the lug studs to support the weight of the car, then check the torque every month or so.
What happens if you over torque?
The Importance of Proper Torque Typically, an under torqued bolt will deform and be unable to provide as much clamping force as needed. An over torqued bolt will break.
What is the torque setting for screws?
Setting 1 is low speed/high torque and is best for driving screws. Setting 2 is a medium speed/torque and can be used for drilling or driving. Setting 3 is the highest speed and is meant for drilling or driving fasteners.
How much should I torque aftermarket wheels?
New wheels should be re-torqued after the first 50 to 100 driving miles.
| Hardware Bolt or Stud Size | Typical Torque Range in Ft/Lbs | Minimum Number of Turns of Hardware Engagement |
|---|---|---|
| 12 x 1.5 mm | 70 – 80 | 6.5 |
| 12 x 1.25 mm | 70 – 80 | 8 |
| 14 x 1.5 mm | 85 – 90 | 7.5 |
| 14 x 1.25 mm | 85 – 90 | 9 |
What are the torque specs for electrical connections?
The required torque spec was 20 foot-pounds (250 inch-pounds). The connections were tightened to only around 12 foot-pounds (144 inch-pounds). I was a young firefighter and licensed master electrician, and I was fascinated with the array of investigative tools the marshal had at his disposal to determine causes of electrical failures.
How many run downs are needed to determine torque?
The number of run-downs needed to determine a torque specification varies. “For practical reasons, that number is influenced by the value of the parts, because at least some of the parts are going to be destroyed in the process of testing,” says Archer. “A common average is a dozen run-downs. A typical range would be six to 24 run-downs.”
Do you need a calibrated torque wrench?
And most of all, a really nice and calibrated top-tier torque wrench. Bottom line is this: If you care, you’ll be fine. Torque specs are quite sloppy on anything except Rocket Surgury and head bolts, and the latter comes with great instructions and often bespoke thread lubricant.
What should I do before applying final torque?
Only lower it down enough to prevent the wheel from rotating during final torque. Wheel chocks can be used if necessary to lock the wheel in place. Before applying final torque, set the torque wrench to the specifications provided by the wheel or vehicle manufacturer.