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Old December 2nd, 2005, 12:23 AM   #1
Dan [Sac]
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Wheel studs - I thought I had the right p/n?

I'm replacing all my aging wheel studs with the late model ARP (corvette) studs, and I ordered Summit P/N 100-7708 (12mm x 1.50).

I got one in, and it seems pretty snug, but being paranoid, I thought the spline numbers were different. Once counted, the stocker was 36 splines, and ARP stud was 28 - wtf, mate? I thought I had the right part.

Search doesn't show anything, and I lost my old records with the useful part numbers. Now I have 40 studs that may not be the right thing...(20 for daily driver, 20 for FrankenProbe).

Here's a pic of the wheel stud comparison:

Click for picture


I think what i'll do if press them in anyway and weld them in the back for a little extra security.
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Old December 2nd, 2005, 10:47 AM   #2
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Quote:
Originally Posted by Dan [Sac]
I'm replacing all my aging wheel studs with the late model ARP (corvette) studs, and I ordered Summit P/N 100-7708 (12mm x 1.50).

I got one in, and it seems pretty snug, but being paranoid, I thought the spline numbers were different. Once counted, the stocker was 36 splines, and ARP stud was 28 - wtf, mate? I thought I had the right part.
hi dan! correct part number from Summit is definitely ARP-100-7708 (i am looking at my receipts folder right now). they fit very snugly in the hub; i didn't have a press handy, so i lubed up the splines and pulled them in with a spare lugnut and alot of big washers. they were very tight; i didn't weld them in the back, and they have not budged, even after 2 years of hard hard hard wheel-to-wheel road racing. you should be fine, even without welding, on your install.

good luck!
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Old December 2nd, 2005, 10:52 AM   #3
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Here are the exact ones I used

http://www.visiononeautosports.com/D...20(Medium).JPG

http://www.visiononeautosports.com/D...20(Medium).JPG

And for good measure my install

http://www.visiononeautosports.com/install.htm

Don't weld them, thats just silly - and the heat isnt good for the splines/hub.
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Old December 2nd, 2005, 11:01 AM   #4
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Seems like forcing 28 splines into a hole cut for 36 would cause a problem eventually, are proper ones not available? Also, why the longer studs? Is it to compensate for wheel spacers?
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Old December 2nd, 2005, 11:09 AM   #5
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You have the correct part number. Press them in, they will hold without any other means, there is no problem.

Ill show you on the 11th

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Old December 2nd, 2005, 04:52 PM   #6
Dan [Sac]
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Good to know. I was pretty certain that I had the right p/n, but 28-36 didn't add up. I'll use the open lugnut + airgun to press them in after lubing the splines for the other ones.

The longer lugs allow for spacers in the future, plus the stockers were stripped, broken, or missing altogether (at least one per wheel), and we all know how missing lugnuts do at autocross tech time
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Old December 7th, 2005, 09:51 AM   #7
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I have those same studs in my car. They're great! I installed them with an open ended lugnut and impact wrench. I used a larger 1/2" drive socket as a spacer, rather than multiple washers.

Mike
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Old March 20th, 2006, 03:10 PM   #8
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ok i got these studs and put them in, but now they are too long for my lug nuts, this is after my spacer adn rim are on.... any suggestions on new lug nuts? or do i need a new spacer, if so my wheel is really goign to stick out
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Old March 21st, 2006, 06:12 PM   #9
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open-ended lugnuts?
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Old March 21st, 2006, 08:23 PM   #10
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Yeah, you have to get the open ended lug nuts for these studs.
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Old March 21st, 2006, 09:02 PM   #11
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He has open ended lugnuts but they arent long enough. You cant get the key in the middle enough to torque them without constantly worrying about stripping them. Where can he get longer lugnuts. The wheels with spacers are already pushed all the way to the edges of the fenders.
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Old March 21st, 2006, 10:01 PM   #12
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screw special lugnuts
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Old March 21st, 2006, 10:08 PM   #13
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Quote:
Originally Posted by Probesport
Here are the exact ones I used

http://www.visiononeautosports.com/D...20(Medium).JPG

http://www.visiononeautosports.com/D...20(Medium).JPG

And for good measure my install

http://www.visiononeautosports.com/install.htm

Don't weld them, thats just silly - and the heat isnt good for the splines/hub.



what size spacers do you have and whats the offset on ur rims?
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Old March 21st, 2006, 11:42 PM   #14
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aside from the part number, what year corvette are these for?
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Old March 22nd, 2006, 12:41 PM   #15
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how do you get the old studs off?? thinkin i might do this when i put my rims on
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Old March 22nd, 2006, 01:21 PM   #16
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Quote:
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how do you get the old studs off?? thinkin i might do this when i put my rims on
big ass hammer.
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Old March 22nd, 2006, 02:46 PM   #17
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Air hammer, takes seconds. Using a regular hammer is putting undue stress on the hub.
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