To estimate 80 in-lbs of torque by hand without a torque wrench, you can use a rough guideline: applying pressure with your fingers and thumb can generate about 10-15 in-lbs of torque. Therefore, you would need to apply a consistent force of about 5-8 times that pressure. It's important to note that this method is not precise, and using a torque wrench is recommended for critical applications to ensure proper torque specifications.
To measure torque by hand, you can use a torque wrench, which is a tool that allows you to apply a specific amount of force to a bolt or nut. The torque wrench will indicate the amount of torque being applied, usually in units like foot-pounds or Newton-meters. Simply adjust the torque wrench to the desired torque setting, then apply force to the bolt or nut until the wrench clicks or signals that the correct torque has been reached.
There's a world of difference. A torque wrench is a hand tool used to tighten fasteners to a preset torque specification. An impact wrench is a power tool which uses power actuated hammers to tighten a fastener for high torque applications.
torque wrench. if you dont tighten it enough, it will work itself loose and then youll have problems
There are a couple of different tools that are good for tightening lug nuts. A torque wrench and a lug wrench are good for tightening lug nuts. Typically lug nuts would be tightened with a torque wrench, but a lug wrench is much cheaper.
The best lug wrench is the cross shaped type with 4 different sockets. This is the only hand wrench that will apply enough torque on your lug bolts.
80 ft-lbs. The home mechanic can just use a regular wrench, tighten by hand, then step on the end of the wrench to torque it adaquately (don't stomp on it).
Lug nuts you will want to tighten by hand with a lug wrench, so you can get them off with a lug wrench on the side of the road.
It really doesn't matter to the nut or bolt, but you may get more torque by pulling it.
The longer handle gives you more leverage. You use Force to push or pull an object in an attempt to make it move. When you want to cause something to rotate (tighten or loosen a nut for example), you need Torque. Torque = the force you apply to your spanner times the distance your hand is from the nut you are trying to turn. Thus, if you have a longer spanner, you can place your hand farther from the nut and the Torque on the nut will increase. You have to be careful about long handled wrenches or slipping a piece of pipe over a wrench to make it longer as you can generate so much Torque that you can snap the bolt clean off or strip the threads. If you have to tighten a nut/bolt very firmly, but don't want to strip/snap it, you can use a Torque Wrench. It has a gauge that tells you how much Torque you are applying to the nut/bolt so that you can tighten it to specifications without going over.
You will need an extension for a socket, the correct socket (I think 5/8 will work), and a torque wrench. First, use the extension and socket to screw onto the spark plug. Once it becomes too hard to turn it by hand use the torque wrench. Once the plug is out, take your new one (I recommend NGK) and thread it into place without using the torque wrench. Then once it is too hard by hand use the wrench and tighten to the recommended number (most likely 19 N). Repeat for the other three plugs. If I were you I would also put anti-sieze lubricant on the threads of the new spark plugs. This will make it easier to remove the plugs next time around.
The recommended two-hand twist force for tightening a bolt is typically around 20-40 Nm, which is equivalent to 15-30 lb-ft. It is important to refer to the specific torque specifications provided by the manufacturer for each application to ensure proper tightening without damage. Using a torque wrench is recommended for precise control of the applied force.
Don't bother with torque specs, rust and worn bolts can make the torque innacurate. Just make nicely tight with one hand on wrench (DO NOT STRIP, A 12-POINT BOXED END WRENCH IS GOOD ENOUGH). You can also put anti-seize on bolts (only a little)... you never know if you will be the next person that has to remove them.