Proper Torquing Tips & Techniques (as Suggested by Forum Members)
#1
Proper Torquing Tips & Techniques (as Suggested by Forum Members)
Proper Torquing Tips & Techniques (as Suggested by Forum Members)
By Joseph Coelho
Ensure you are accurately tightening your S2000's fasteners to the manufacturer's precise torque specifications with these tips and techniques.
By Joseph Coelho
Ensure you are accurately tightening your S2000's fasteners to the manufacturer's precise torque specifications with these tips and techniques.
#3
If you use a click type torque wrench to verify the torque of an already tightened fastener, if it clicks without the fastener moving at all, if you don't actually tighten things more than they were at the start, you can't be sure of the fastener torqued value.
Example. Someone at a tire shop tries to use an air gun to zip the lug nuts to just barely on, so they can finish up with a torque wrench. They set torque wrench to 80 lb/ft, and it nicely clicks for each nut. They call it good and car goes out.
Only they are clumsy with the gun, and each lugnut is actually torqued to 150 lb/ft.
When wrench clicked without tightening, that should have been their cue things were too tight.
So don't be like that clueless newb at the tire shop if you use torque wrench to check fastener.
Example. Someone at a tire shop tries to use an air gun to zip the lug nuts to just barely on, so they can finish up with a torque wrench. They set torque wrench to 80 lb/ft, and it nicely clicks for each nut. They call it good and car goes out.
Only they are clumsy with the gun, and each lugnut is actually torqued to 150 lb/ft.
When wrench clicked without tightening, that should have been their cue things were too tight.
So don't be like that clueless newb at the tire shop if you use torque wrench to check fastener.
#4
Only they are clumsy with the gun, and each lugnut is actually torqued to 150 lb/ft.
When wrench clicked without tightening, that should have been their cue things were too tight.
So don't be like that clueless newb at the tire shop if you use torque wrench to check fastener.
When wrench clicked without tightening, that should have been their cue things were too tight.
So don't be like that clueless newb at the tire shop if you use torque wrench to check fastener.
This is my understanding anyway but I'm an accountant, perhaps a qualified mechanic or engineer could comment if I have it arse up.
#6
Not sure I get this logic - if the person with the air gun tightened the lugs to the correct torque of 80lb/ft and the guy with the torque wrench (say set at 81lb/ft) it would also click off without tightening. So there is no cue at all as to the torqued value. The breakaway torque of a fastener is higher (sometimes significantly) than the torqued value. The breakaway torque might be 85 or 100lb/ft on a lug that has been secured to 80-lb/ft - so it is not possible, or really advisable to check the torque of a fastener with a torque wrench.
This is my understanding anyway but I'm an accountant, perhaps a qualified mechanic or engineer could comment if I have it arse up.
This is my understanding anyway but I'm an accountant, perhaps a qualified mechanic or engineer could comment if I have it arse up.
Then he uses the torque wrench to finish up like his bosses are always so insistent he do. He marvels at his seemingly unique ability to somehow always get the lugs to the exact right torque using the gun, since every time he checks them with the torque wrench, they're already 'perfect'.
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#9
The tire shop in question has torque sticks. The shop insists employees follow that up with the torque wrench. The problem is torque sticks are a sort of tuned entity, and varying air pressure or other factors of the gun can have them apply more torque than they are rated for.
A torque stick that limited to something super low, like 20 lb/ft, that even if it were way off due to whatever factors would still be way lower than the typical 80 lb/ft of your typical lug nut, that was then followed up with a torque wrench that was sure to turn some number of degrees before clicking, that would work.
But then if the idiot forgets, you have wheels falling off and lawsuits. So its easy to see why they want to err on the side of warped wheels and warped rotors.
A torque stick that limited to something super low, like 20 lb/ft, that even if it were way off due to whatever factors would still be way lower than the typical 80 lb/ft of your typical lug nut, that was then followed up with a torque wrench that was sure to turn some number of degrees before clicking, that would work.
But then if the idiot forgets, you have wheels falling off and lawsuits. So its easy to see why they want to err on the side of warped wheels and warped rotors.
#10
Torque stick is a torsion spring it will bend before it's rating, and any fastener should be finished with a torque wrench.