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Old 03-18-2018, 04:02 PM   #1
ZX1truth
 
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Front strut bolt torque procedure??? Sounds weird to me..

It says in the manual to torque the 24mm nut to 59 ft lbs and then to turn it another 180 degrees?????????? WHY? Why not just give it one torque spec and be done with it??????

Also......watching this video they spin the nut 180 degrees but it looks like they are not holding the 24mm bolt head??? So wouldn't the bolt just spin 180?
https://youtu.be/jXuoPUC7xMw

Does't make sense to me.....does anyone know the correct procedure and why they do it this way????
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Old 03-18-2018, 06:22 PM   #2
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Originally Posted by ZX1truth View Post
It says in the manual to torque the 24mm nut to 59 ft lbs and then to turn it another 180 degrees?????????? WHY? Why not just give it one torque spec and be done with it??????

Also......watching this video they spin the nut 180 degrees but it looks like they are not holding the 24mm bolt head??? So wouldn't the bolt just spin 180?
https://youtu.be/jXuoPUC7xMw

Does't make sense to me.....does anyone know the correct procedure and why they do it this way????
TTY bolts (torque to yield) supposed to be one time use. Many just Torque to about 80 ft. Lbs. and use blue loctite.

Many bolts are TTY on our cars... TTY with angle ° are supposed to be more exact. Head bolts are that way also. One time use and in that’s case, always replace them.

-Don
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Old 03-18-2018, 06:28 PM   #3
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Quote:
Originally Posted by hammdo View Post
TTY bolts (torque to yield) supposed to be one time use. Many just Torque to about 80 ft. Lbs. and use blue loctite.

Many bolts are TTY on our cars... TTY with angle ° are supposed to be more exact. Head bolts are that way also. One time use and in that’s case, always replace them.

-Don
Thanks Don......I'm putting Ground Control camber plates on my Pfadt coilovers. So if you go to 59 ftlbs then spin it another 180 degrees make sure the bolt does not spin then. In other words keep the wrench on the head of the bolts and spin da nut?????
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Old 03-19-2018, 05:54 AM   #4
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If you're replacing the bolt then you can use those torque specs (59 ft/lb + 180°) but if you're reusing the bolt then typically you'll give it a grunt or two with some blue loctite as mentioned.

If you do the 59 ft/lb + 180° on a used bolt you may stretch the bolt even more and risk snapping it (bolts stretch when torqued past a certain point, and stretching them again will put them even closer to snapping). TTY bolts are used to make sure a bolt goes on as tight as it needs to; if there is rust in the threads, for example, going to 80 ft/lb or whatever may not make the bolt as tight as it needs to be, but doing 59 ft/lb then 180° makes sure it's tight, no matter the resistance.
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Old 03-19-2018, 12:51 PM   #5
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Thanks for the input...........very much appreciated!
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Old 03-20-2018, 09:42 AM   #6
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You'll find more information here: http://www.jpssonline.com/t-camaro-a...fications.aspx
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Old 03-22-2018, 10:23 PM   #7
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You'll find more information here: http://www.jpssonline.com/t-camaro-a...fications.aspx
Thanks Pete!
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Old 03-26-2018, 10:04 AM   #8
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My pleasure
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