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Old February 9th, 2013, 03:39 AM   #1
xj bmx
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Default Ford 9 " disk swap wheel studs

So I have everything need to do the swap using RuffStuff brackets and such but the last part I need is the wheel studs.

It seems some guys just run a longer stud but that doesn't sit well with me since the rotors have a .641" hole and the studs are .495". That seems a bit unsafe during hard braking as I imagine it would shift some and over time could cause issues. Also the rotor has some up and down play on the axle flange so I imagine that would cause a bit of run out and an unbalanced rotor along with with wear issues and so forth. Now I could find studs with a longer knurled area but that's still .620".

Am I over thinking this or is this the norm? I was thinking of making some .072" thick sleeves to be able to just run a standard stud. But if there is a known studded that will work I'll just for with that.
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Old February 9th, 2013, 04:58 AM   #2
vickiebrian
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I run the same stud that's on older dana 44 fronts
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Old February 9th, 2013, 08:28 AM   #3
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It is really common for aftermarket rotor to have larger holes, With ~.075 on both sides of the stud. Don't worry about it. They will be fine. Just make sure you torque the wheels.
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Old February 9th, 2013, 10:27 AM   #4
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Originally Posted by vickiebrian View Post
I run the same stud that's on older dana 44 fronts
How old? I have a '74 f150 44 front, the studs for that would be perfect if the rotor went behind the axle flange like it would in the front, since it has a .0639" shoulder at the bottom then the knurling it wouldent press in to the shaft.
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Old February 9th, 2013, 10:31 AM   #5
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It is really common for aftermarket rotor to have larger holes, With ~.075 on both sides of the stud. Don't worry about it. They will be fine. Just make sure you torque the wheels.
In that case maybe I'll just get a studs with a longer knurled area, that would take the gap down a bit more just to be on the safe side.
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