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torque lug nuts

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torque lug nuts

Postby kriplur » Mon May 17, 2004 1:13 pm

what is the recommended torque for lugnuts on 5/8 dia studs on a late model race car.
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Postby speedtalk » Mon May 17, 2004 3:52 pm

Not sure, but I'd think it would have to be over 100.

ARP calls for something between 167 & 214 on a 170,000 psi strength stud, depending on lube used http://arp-bolts.com/pages/tech/images/fasttorq.pdf . Do you know the strength of your studs?
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65 lbs

Postby MikeLeone » Mon May 17, 2004 5:43 pm

We've always torqued ours to 65. I've seen more lugs snap from being over tightened, never had one work loose at 65lbs. Besides, if you need them off in a hurry, you don't need a Winston Cup style(I know.... Nextel CupStyle) impact gun to get them off.

I assume you mean with steel lug nuts with coarse threads.
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Re: torque lug nuts

Postby tk » Fri May 21, 2004 8:20 am

kriplur wrote:what is the recommended torque for lugnuts on 5/8 dia studs on a late model race car.


On a drag car with 1/2" stud we torque them at 90lbs.

If I remember on John Friel's Dart with 5/8 stud we torqued them at 110lbs...
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Postby Guest » Sun Nov 14, 2004 8:48 pm

GM oem 1/2" lug nuts are spec'd at 100# in their service manual. The 'feel' when doing so, tells me that oem is not out of line.
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Postby gas » Sun Nov 14, 2004 8:51 pm

OK, that be me. Didn't realize I was not logged in.

OK, I'm clueless. How do I edit a 'guest' post? :oops:
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Re: torque lug nuts

Postby pdq67 » Thu Nov 03, 2016 5:48 pm

The old German spec of, "Gootin Tight", should do you!

He, He!!

Just had to.

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Re: torque lug nuts

Postby Nick Campagna » Sat Nov 05, 2016 8:27 am

Factory spec on my '76 Eldorado is 130 ft-lbs. A local shop used an electric impact on my wheels once, and I had 3 of the 4 come loose at 70 mph / 2 am on a country road. Destroyed the wheels and studs. He made good on it and fired the tech.
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Re: torque lug nuts

Postby pdq67 » Sat Nov 19, 2016 3:32 pm

I will say that when I went to put a rebuilt alt. on my Daughter's '89 Accord, I had to pull the drivers side drive axle to do it!

And the last dude that put one on it before tightened the axle nut down to about 1200 pound foot!

It took me and my Son using a 3' cheater pipe and 3/4" stuff to pop it loose!

I was jumping up and down on the cheater bar as my Son held it tight to the axle nut!

You talk about pissed off!

If the dude that had done that would have been there, I would have beaten him up severally!!

There is NO since in doing this shit!

Plus to top it off the asshole rounded the nut off perfectly round that bolt the alt. swings on!! I had to use my cheap HFT air hammer and a chisel to break it loose because the nut was deep in a f**, "V", and I couldn't get to it with ANYTHING except my air chisel!!

A two hour job took me 3 f** days!!

Now back ta the lug-nuts!!

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Re: torque lug nuts

Postby Coloradoracer » Sun Nov 20, 2016 9:04 am

I run 5/8" studs on my dragster. Torque them to 90 lbs. per Mark Williams spec. The last ones I had were Moroso and they called for 125 lbs torque
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