need help finding engine tork spec?
for fly wheel on 2008 chevy colorado lt 3.7 5 cyl and should these bolts be lock tight?
0
Popular New Cars
Popular Used Sedans
Popular Used SUVs
Popular Used Pickup Trucks
Popular Used Hatchbacks
Popular Used Minivans
Popular Used Coupes
Popular Used Wagons
Answers
As for locktite, I use Locktite Blue 242. Do not use red Locktite.
The only thing worse than having a flexplate bolt come loose, is trying to get bolts loose that someone has used red threadlocker on.
The specification is the same for both automatic and manual transmission flywheels.
The old method of just using turning torque to set the tension of a fastener left a lot of potential for error. The low initial torque of the TTY fastener reduces error that can be caused by friction between the bolt head and the work, (45% of the effort) and in the threads (another 45 % of the effort) and focuses on simply setting the tension in the bolt by an angular measurement. When turned to a specific angle, the turning stretches the bolt into it's correct shape to set the proper tension for the assembly.
Turning a fastener to a rotational torque higher than the initial specification can cause a TTY bolt to fail. When you look at a bolt, the picture you should put into your mind is a spring. Operate the spring in its normal range and it can be pulled and released and go back to it's original shape. But, if you stretch it too far it becomes damaged and will then no longer return to it's original shape. That's why TTY bolts cannot be reused and starting with a torque higher than the specification can damage the bolt. When done correctly the torqueing routine permanently stretches the bolt just short of the point that the bolt can fail. Any additional preload, or turning to great of an angle takes the bolt out of it's designed tension range.
http://wbtools.com.au/how-to-understand-angular-torque-and-torque-to-yield/