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10-10-2011, 12:17 AM
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#1 |
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Registered User
Join Date: Nov 2008
Location: Elk Grove Ca
Posts: 629
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Lug Nut Q
hey is there a tork spec for lug nuts heres what happened i used a star wrench on the lug nuts and when i went to remove the wheels a few months later i broke a stud on both front rotors put the wheels back on now about a month later i bought new wheels and the shop said two lugs are impacted if they remove them they will break so they wouldnt install my new wheels until i have new studs pressed in
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10-10-2011, 01:44 PM
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#2 |
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Laid Lo
Join Date: Aug 2008
Location: Oceanside CA
Posts: 277
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Re: Lug Nut Q
100 ft lbs tighten down in a star pattern
Make sure studs are clean and lightly grease if you really wanna do it right.
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Semper Fi, Jeff  '72 C10 - lays frame '07 Sand Rail - ecotec powered '05 2500HD - tows stuff '67 VW Bug - gas saver '01 Jeep TJ - rock crawler |
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10-11-2011, 02:55 PM
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#3 |
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Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,147
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Re: Lug Nut Q
Service manual says 65-90 foot pounds.
Posted via Mobile Device
__________________
1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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10-11-2011, 02:59 PM
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#4 |
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Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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Re: Lug Nut Q
I have heard 90 pounds but no basis for it other than what I have always done.
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Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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10-11-2011, 08:58 PM
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#5 |
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Laid Lo
Join Date: Aug 2008
Location: Oceanside CA
Posts: 277
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Re: Lug Nut Q
That 65-90 seemed low to me since my VW bug gets 96 ft lbs. Had to do a bit of googling. Always have done my trucks at 100. According to these links a 1/2 ton would get 75-85 based on stud size. Ultimately I think so long as you keep them in the range, all the same and retorque after 50 miles you'll be good.
http://www.tirerack.com/wheels/tech/...jsp?techid=107 http://www.okoffroad.com/editorial-boltpattern.htm But what the heck do I know.... Here's my junk after a "goodntight" tire change (read no torque wrench).... Dropped off at about 1 mph. Busted 2 studs. 
__________________
Semper Fi, Jeff '72 C10 - lays frame '07 Sand Rail - ecotec powered '05 2500HD - tows stuff '67 VW Bug - gas saver '01 Jeep TJ - rock crawler |
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10-11-2011, 10:08 PM
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#6 | |
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Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,147
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Re: Lug Nut Q
Quote:
Posted via Mobile Device
__________________
1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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10-11-2011, 11:08 PM
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#7 |
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Laid Lo
Join Date: Aug 2008
Location: Oceanside CA
Posts: 277
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Re: Lug Nut Q
It was uneven torque (not using a torque wrench) that led to this. Found a lug nut about ten feet back, two more less than 100 yards back on the trail all just unscrewed. When the wheel came off it snapped two lugless studs.
The excellent traction, a full time locker and aluminum wheels didn't help. On board air and the winch got us back on the trail in less than 30 mins. Further Google search shows that newer trucks have significantly higher torque specs. I believe this is due to factory alloy wheels. Just food for thought if you run aluminum wheels. http://www.discounttire.com/infoCent...tml#chevrolet2 Whatever torque # you choose: Actually torque them not just "tight enough". Keep that torque equal. Check again after some miles.
__________________
Semper Fi, Jeff '72 C10 - lays frame '07 Sand Rail - ecotec powered '05 2500HD - tows stuff '67 VW Bug - gas saver '01 Jeep TJ - rock crawler |
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