The factory specs for my car (83 Shelby Dodge Charger) call for 80 ft lb torque on wheel lugs. Does that sound about right?
Thanks.
The factory specs for my car (83 Shelby Dodge Charger) call for 80 ft lb torque on wheel lugs. Does that sound about right?
Thanks.
Bill Stevens - Mbr # 103106
BnS Racing www.bnsracing.net
92 ITA Saturn
83 ITB Shelby Dodge Charger
Sponsors - Race-Keeper Data/Video Aquisition Systems www.race-keeper.com
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My Datsun manual calls for 75 lb-ft, so I don't find 80 surprising.
Ty Till
#16 ITS
Rocky Mountain Division
2007 RMDiv ITS champion
Racerbill--Never doubt factory specs if you are using OEM studs, lugnuts and wheels.
80 lbs is what I use on my Race Rabbit.
Tim Linerud
San Francisco Region SCCA
#95 GTL Wabbit
Convert from GP to GTL
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racer_tim @ yahoo dot com
I use 100 ft-lbs. But my factory spec is 90, and that's with 14mm studs (stock). 80 is very normal for 12mm studs, which I'd expect you have...
85 ft-lb on the Rabbit, w/ studs. IIRC, isn't the issue w/ over-torquing more of a problem w/ warping rotors, than anything else?
I had been tightening to 100 ft/lbs on my 12mm studs until last friday. I was checking torque on my wheels and found two studs that kept turning. I said WTF! as I tried to remove the wheel one of the studs just spun? Well I managed to remove the lug nuts, the wheel, the caliper, and the brake disk. I found that the stud had stretched and actually caused a shinking of the knurled area of the stud. The butt of the stud was even convex! those were H&R studs. ARP here we come.
Peter Linssen
SPM Volvo 740 Turbo
ITB/FP/VP1 Opel Manta
IMHO 100 is too high for 12mm studs; I run 85ft/lbs on my Pro7 with 12 mm studs and have never had a problem with wheel nuts loosening. This was with factory Mazda mags and now Panasports.Originally posted by itmanta@Sep 5 2005, 08:45 PM
I had been tightening to 100 ft/lbs on my 12mm studs until last friday. I was checking torque on my wheels and found two studs that kept turning. I said WTF! as I tried to remove the wheel one of the studs just spun? Well I managed to remove the lug nuts, the wheel, the caliper, and the brake disk. I found that the stud had stretched and actually caused a shinking of the knurled area of the stud. The butt of the stud was even convex! those were H&R studs. ARP here we come.
[snapback]59671[/snapback]
Marcus
Marcus
miller-motorsports.com - Its always an Adventure (and woefully outdated)
1.6 ITE/SPU/ST2 Turbo Miata (in pieces... err progress)
Yep, I replaced the 12mmX1.5 with ARP 1/2-20's. I will stick to around 80-90 with those.
Peter Linssen
SPM Volvo 740 Turbo
ITB/FP/VP1 Opel Manta
Minor hijack -
So just out of curiosity, why did you switch to 1/2-20? ARP makes 12x1.5 studs. Did you just have a burning desire to buy new lug nuts?Originally posted by itmanta@Sep 7 2005, 09:52 PM
Yep, I replaced the 12mmX1.5 with ARP 1/2-20's.[snapback]59863[/snapback]
Ty Till
#16 ITS
Rocky Mountain Division
2007 RMDiv ITS champion
1/2 is clearly stronger than a 12mm--given the same metallurgy.
"So just out of curiosity, why did you switch to 1/2-20? ARP makes 12x1.5 studs. Did you just have a burning desire to buy new lug nuts? "
The knurl diameter on the 12mmx1.5 studs were too small for my hubs. Shucks, now I cannot use my cool Zenkei forged aluminum lugnuts.
Peter Linssen
SPM Volvo 740 Turbo
ITB/FP/VP1 Opel Manta
http://www.rbinc.com/
Click on "wheel hardware" and then "wheel studs". There are hundreds of different designs. It may take some looking, but I'll bet you can get some.
Norm - #55 ITA, '86 MR2. [email protected]
http://home.alltel.net/jberry/img107.jpg
Website: home.alltel.net/jberry
The factory calls for 80 also on alloys for my dodge....but after seeing an unusual wear pattern on my race rims (bbs rvs and ar 24s) I called auto tire and asked what the manufacter calls for on these rims, 65 lbs....Have not had any problems since...I know it sounds low I suggest calling the maker of the rims...each alloy and the process in the way they are made are different
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