For those who have torqued their u-bolts

After discovering mine were out of spec I torqued to 52. After a bit I decided to try 75, I got worried that was too much and then settled for 60. Just wondering what others are at and why.
Thanks guys!

 

I'm talking stock u-bolts mainly

 

52..if I remember correctly that is the spec on the tsb document regarding the driveline vibrations. Can’t remember the tsb #, but should be in the “list of ts-b’s” sticky thread

 

I remember seeing Toyota's spec and it was quite low. 30-40 ft lbs. I believe I have mine torqued at 85 ft lbs.

https://www.tacomaworld.com/threads/u-bolt-torque.87093/

 

I did the factory recommended 52 ft/lbs.

 

Yeah 52 is spec, but I know that 52ft lbs has been debated and that the boltscould be tourqed higher...

 

I always go 80. Stock u bolts, aftermarket u bolts, I don't care. I do 80 in a criss cross pattern as I'm tighetning and I never worry again.

 

Suggested Torque Values for U-bolts

Size ft-lbs (Grade)

3/8” 30 (5)

7/16” 45 (5)

½” 65 (5)

9/16” 90 (5)

5/8” 120 (5) 170 (8)

¾” 215 (5) 300 (8)

7/8” 345 (5) 480 (8)

1” 740 (8)

1-1/8” 1300 (8)

1-1/4” 1780 (8)

http://www.atlasspringservice.com/2514982_22511.htm

 

I used this but got a little scared cranking them over 100.

 

I’ve had them off a few times putting on/taking off various towing aids like
Sumo springs and hellwig
Helpers. Never had an issue at 52, and they are tight AF when attempting to loosen.

 

There's a science behind it I'm sure. Size of the bolt determines what it should be torqued to. If my wheel lugs are 83 ft lbs, I'm sure my u-bolts at 85 ft lbs will be fine. I don't want that thing getting loose just like my wheels.