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[Z06] Wheels studs??

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Old Mar 17, 2009 | 11:51 PM
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Default Wheels studs??

What is the stock length for the wheel studs?

And are the ARP 1.5" long wheel studs long enough when running 1/4" spacers?
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Old Mar 18, 2009 | 01:04 AM
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Originally Posted by speedyhawk101
What is the stock length for the wheel studs?

And are the ARP 1.5" long wheel studs long enough when running 1/4" spacers?
Not looking at mine as their in hawaii but i believe they are long enough for the spacer.
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Old Mar 18, 2009 | 02:05 AM
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Originally Posted by speedyhawk101
What is the stock length for the wheel studs?

And are the ARP 1.5" long wheel studs long enough when running 1/4" spacers?
Stock studs are 2" under the head and have .509 knurl diameter with
12 X 1.5 threads.

ARP studs #100-7708 are 2.5" under the head with the same knurl and threads.

I don't know of any 1.5" ARP studs that would fit the C5.
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Old Mar 18, 2009 | 07:32 AM
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Originally Posted by Last C5
Stock studs are 2" under the head and have .509 knurl diameter with
12 X 1.5 threads.

ARP studs #100-7708 are 2.5" under the head with the same knurl and threads.

I don't know of any 1.5" ARP studs that would fit the C5.


3/8" spacer You will also need open ended lug nuts. Stock lug nuts wont fit and hold the wheel on
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Old Mar 18, 2009 | 12:29 PM
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Originally Posted by Last C5
Stock studs are 2" under the head and have .509 knurl diameter with
12 X 1.5 threads.

ARP studs #100-7708 are 2.5" under the head with the same knurl and threads.

I don't know of any 1.5" ARP studs that would fit the C5.
Great Info Thanks guys!

OK that's the Part Number I was looking at. I guess I saw the 12x 1.5 and had a BRAIN FART.

12.95 a set isn't bad AND this is more than enough for my 1/4" spacers.

It seems like I've read somewhere that you don't have to change the studs with 1/4" spacers, but I'd rather do it anyway.
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Old Mar 18, 2009 | 02:00 PM
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Good call on changing the studs... better safe then sorry. I broke a few after many years of HPDEs (wheels on and off over and over) and upgraded to the ARPs.
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Old Mar 18, 2009 | 02:24 PM
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(Not that anybody asked but I found it interesting)

If you are trying to find stock C5 wheel studs from Gene Cully they are listed under part #9592032 which comes up as a wheel stud for the C4 Corvette, at about half the price of the local dealership.

(Ok, I suppose everybody knew this but me )
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Old Mar 18, 2009 | 03:24 PM
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Originally Posted by Last C5
(Not that anybody asked but I found it interesting)

If you are trying to find stock C5 wheel studs from Gene Cully they are listed under part #9592032 which comes up as a wheel stud for the C4 Corvette, at about half the price of the local dealership.

(Ok, I suppose everybody knew this but me )
I figured if i can break one they can all break... i just upgraded to the ARP's and called it a day.
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Old Mar 18, 2009 | 04:24 PM
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A few things I've learned over the years... you shouldn't be breaking wheel studs unless:

1. You're over torquing them

2. You're a road racer and you're changing wheels/tires so much that they eventually wear out.

* 100 ft/lbs means 100 ft/lbs... not 100 and a little more!
* I've found that a tiny dab of anit-seize helps everything go on/off easily w/o gauling the threads.
* Don't remove the lugs w/ hot wheels/brakes at a track event.
* Everytime you torque a lug you you're stretching everything in place and creating friction to hold the lug on. Overtime the stud becomes distorted and you crossthread the lug taking it off. It'll go on fine, but after that's it's "done" and you have to replace the stud.
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Old Mar 18, 2009 | 05:10 PM
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Good info, I was just getting ready to post about the ARPs. I'm running 5/16'' spacers on the stock studs and the back are more than ok but the front are a little risky with the wheels im running.

Do you need a press to install the studs or is this something I can do myself?
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Old Mar 18, 2009 | 05:36 PM
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A quick note about studs: I put LONG studs in my car, to account for racing wheels (the centers are really thick) and spacers. It was impossible to get the studs in the hubs without pulling them. That means pulling ball joints, and so forth.

If you are using stock wheels, the shorter studs (2.5") are fine, and you can get them into the hubs on the front without pulling them. You will have to pull the backs, as the parking brake assembly will be in the way.

You do not need a press, though if you have the hubs out you may as well. If you do it on the car, you can stack up washers under a lug nut on the stud and just tighten it down until it's in.

Happy motoring.
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Old Mar 18, 2009 | 06:35 PM
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Originally Posted by Cobra4B
Overtime the stud becomes distorted and you crossthread the lug taking it off. .
AHA!! I always assumed the only way to cross thread a stud or lug was while you were putting it on.

I do track my car, I do pull the wheels when everything is hot (no choice with a cracked rotor), and I'm sure they get over torqued when the tech team checks already tight lugs. Think I'll try the anti seize and see if I can keep them operating a little longer. Thanks for the enlightenment.
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Old Mar 19, 2009 | 11:51 AM
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Something about studs and lugnuts:
I use hand tools to break them loose, and a power tool to spin the lug nuts down, but a hand torque wrench to tighten them. I've broken two lug nuts in four years of road course driving. I've never broken a stud, but finally replaced my stock ones with ARP when I had a hub failure. I think that by using non-impact tools, I've increased the life of the components. I don't advocate that necessarily, because lug nuts are cheap enough that you can replace them every season, but it's interesting.
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Old Mar 19, 2009 | 05:31 PM
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Originally Posted by yakisoba
A quick note about studs: I put LONG studs in my car, to account for racing wheels (the centers are really thick) and spacers. It was impossible to get the studs in the hubs without pulling them. That means pulling ball joints, and so forth.

If you are using stock wheels, the shorter studs (2.5") are fine, and you can get them into the hubs on the front without pulling them. You will have to pull the backs, as the parking brake assembly will be in the way.

You do not need a press, though if you have the hubs out you may as well. If you do it on the car, you can stack up washers under a lug nut on the stud and just tighten it down until it's in.

Happy motoring.

Argh, So i guess I'm looking at having the hubs pulled then it seems. Does this require replacing the wheel bearings?
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Old Mar 19, 2009 | 08:34 PM
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There isn't a lot of room behind the bearing flange to push the old stud out and install the new one. By pulling the bearing out of the knuckle as recommended by the Service Manual you can do the replacement quite easily.

Bill
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Old Mar 20, 2009 | 12:03 AM
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Originally Posted by Cobra4B
A few things I've learned over the years... you shouldn't be breaking wheel studs unless:

1. You're over torquing them

2. You're a road racer and you're changing wheels/tires so much that they eventually wear out.

* 100 ft/lbs means 100 ft/lbs... not 100 and a little more!
* I've found that a tiny dab of anit-seize helps everything go on/off easily w/o gauling the threads.
* Don't remove the lugs w/ hot wheels/brakes at a track event.
* Everytime you torque a lug you you're stretching everything in place and creating friction to hold the lug on. Overtime the stud becomes distorted and you crossthread the lug taking it off. It'll go on fine, but after that's it's "done" and you have to replace the stud.
I get sabotaged... I couldnt walk away from my car in the pits at the track without something happening. Came around one day after getting a drink and all my lug nuts were laying on the ground and none on the studs. Was signing up for a bracket another time and came back and stud was broken and laying next to the tire. never could catch the guilty parties but made it habit to always do a one over on my car before getting in.
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Old Mar 20, 2009 | 07:57 AM
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I clean the stud threads with a wire brush and inspect for burs each time I prep the car for a track event.
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Old Mar 20, 2009 | 10:13 AM
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Anyone know the die size for stud? Seem like I read where it is a good idea to run a die over it to remove small pieces of metal that get caught in the threads. When lugs are run on, the metal damages the studs. I think I will repl the fronts in mine seeing it is no big deal, but the rears - I wouldn't mind getting as much as I could.
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Old Mar 20, 2009 | 01:10 PM
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Originally Posted by waddisme
Anyone know the die size for stud? Seem like I read where it is a good idea to run a die over it to remove small pieces of metal that get caught in the threads. When lugs are run on, the metal damages the studs. I think I will repl the fronts in mine seeing it is no big deal, but the rears - I wouldn't mind getting as much as I could.
12 X 1.5, I just saved one of my rear studs with a die job.
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Old Mar 20, 2009 | 01:11 PM
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Thanks.
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