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BRINGING IT ALL TOGETHER.... A's, G's & E's


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wylee
equium
6 posters

This Stud's for you

equium
equium


Number of posts : 107
Location : Cameron Park, CA
Registration date : 2011-04-25

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Post by equium Sat Jul 06, 2013 8:28 pm

When I began my Scarebird Disc upgrade several weeks ago, I had no idea the can of worms I’d be opening up, and I’m not even half way done!  The first hurdle was when I discovered my Kingpins needed to be replaced.  That is half way done at this point too.  This post is about the discoveries I made with regards to wheel studs.  For the record, I’m working with a 2200lbs axle.  
After I had driven out the old studs, it did not look like an exact replacement set would have been long enough to accommodate the new rotors and wheels.  I know that there have been others that have installed longer Jegs or ARP studs that are 3 to 3.5 inches in length.  I did not want to go through the trouble of cutting hardened steel studs to make them work for me.  So, I proceeded to research and even purchase studs to test.  I had to break down and purchase digital dial calipers to take some measurements.  Not a bad investment and it really helped.  
For starters, my driver side hubs had already been converted to right hand threads by the previous owner.  The studs I drove out were Dorman 610-039 with a .625 Knurl.  These are the ones I felt would be too short after the upgrade.
I have four pictures to share and I’ll explain them now.
Photo 1: These are Moser 8010 Wheel Studs and they’re 3 inches long.  Summit Racing’s description said the knurl was .625, the package says .615.  I measured and they averaged about .620.  In spite of the length that was too long, the knurl was too loose and I could almost just push the studs into the hub holes.  
This Stud's for you Moser_10

Photo 2: These are Moser 8368 and they’re 1.75 inches long with a .625 knurl.  These are the studs I ended up using and they were a perfect fit.  I was able to press them in with my arbor press.  The hub from the driver side was upgraded to RH threads by the PO, and I think this may have widened the stud holes because the new studs did not require as much effort to install as the passenger side, but they were still a tight fit.  I applied Loctite 640 Sleeve Retainer to all the knurls on the 10 new studs before pressing in.  Loctite 640 will give up to .007 max gap fill, so I’m confident my studs will be very secure.
This Stud's for you Moser_11

Photo 3: This is a side by side view of the studs.  The far left is one of the removed original studs, Dorman 610-039.  Second from left is Moser 8368 that I used for my hubs.  Third from left is the Moser 8010 that I first bought.  The edge of the blue tape closest to stud head is where the stud protruded after I mocked it up through the hub, rotor, and new wheel.  It might be hard to see, but if I had used the Dorman 610-039, I would have had about 3/8” of stud sticking through the wheel for me to screw my lug nut on to.  I did not feel comfortable with this.    The last stud on the far right is a Dorman 610-449 that I purchased for testing.  Its application is for a Jeep Wrangler and is almost 2 inches in length and claims to have a .627 Knurl.  I measured and it was barely a .615 knurl.  I could push these into my hubs with my finger, so these were a no-go.
This Stud's for you Side_b10

Photo 4: These are my hubs with the newly installed, Moser 8368 studs.  I’m very pleased with the results.  What I really like is that I don’t have to cut them down to size, and, since the knurls do not protrude past the hub flange (like the dorman 610-039), I don’t have to counter sink the holes on my rotors.  
This Stud's for you Hubs10

Sorry for such a long post.  I hope that this will help others in the future.  Please feel free to add any comments or info that I may have missed.
On Edit: I see that my photos were cropped to fit the post so photo #3 does not show all the test studs, but you'll get the idea. thanks
wylee
wylee


Number of posts : 866
Location : middletown,ny
Registration date : 2009-04-03

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Post by wylee Sun Jul 07, 2013 6:01 am

thank u for the post.im at the point of replacing my stock 1969 a 108 studs with all rite hand threads butt stock size.
Magic Bus
Magic Bus


Number of posts : 1422
Location : -Gateway to the West - St Louis Missouri
Registration date : 2009-12-02

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Post by Magic Bus Sun Jul 07, 2013 12:16 pm

Good post, I feel your stud experience, I had to deal with that, when I changed rims on my truck and used spacers. Lots of trial and error and measuring..
RodStRace
RodStRace


Number of posts : 3046
Location : Chino Valley
Registration date : 2010-01-21

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Post by RodStRace Sun Jul 07, 2013 12:35 pm

Equium, GREAT job, great post!
All the info with pictures too is the best way to convey information I'm sure will be useful to many here.

This shouls be also posted in How It's Done so the chances of finding it are double.

Also, please post your kingpin info and the brake upgrade stuff, if possible. These are repairs most old vans need.
dix
dix
Moderator 1st Class
Moderator 1st Class


Number of posts : 8562
Location : pittsburgh pa
Age : 65
Registration date : 2008-05-29

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Post by dix Sun Jul 07, 2013 1:58 pm

equim i hope you din't mind i cut and copyed the info on a100 parts link.


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equium
equium


Number of posts : 107
Location : Cameron Park, CA
Registration date : 2011-04-25

This Stud's for you Empty Re: This Stud's for you

Post by equium Sun Jul 07, 2013 6:17 pm

dix wrote:equim i hope you din't mind i cut and copyed the info on a100 parts link.

Not at all. thanks for doing that.
equium
equium


Number of posts : 107
Location : Cameron Park, CA
Registration date : 2011-04-25

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Post by equium Sun Jul 07, 2013 6:52 pm

Magic Bus wrote:Good post, I feel your stud experience, I had to deal with that, when I changed rims on my truck and used spacers. Lots of trial and error and measuring..

Magic Bus: you bring up a great point when you mentioned wheel spacers. All the work and research i've done is based on the hope and prayer that I wont need wheel spacers. I have a old tire from my grand caravan (215.70 R15) that i'm going to mount on one of the new wheels for a mock up and test fit. From there, I'll be able to see if I'll need a thinner tire or wheel spacers (I really hope not, lol)
I will share what those results in the future when I get to that point. wish me luck.
Arkansastraveler70
Arkansastraveler70


Number of posts : 18
Location : Union County, Arkansas
Age : 52
Registration date : 2020-06-18

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Post by Arkansastraveler70 Fri Nov 13, 2020 11:22 am

Does anyone have the correct Knurl size for the Rear wheels?
I'd like to find some around 2" in length if anyone has any info that would be great! Thanks
dix
dix
Moderator 1st Class
Moderator 1st Class


Number of posts : 8562
Location : pittsburgh pa
Age : 65
Registration date : 2008-05-29

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Post by dix Fri Nov 13, 2020 4:32 pm

625


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