Using mustang rotors for 4.5" bc

[ncysys]

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View attachment 1715498371 View attachment 1715498373 I'd like see if there's an interest in creating the definitive guide to using the mustang rotors as a swap for the KH rotors.
My lathe is a little too small to swing the 11.210" mustang rotors so I set it up in my mill on a rotary table.. I'll do the machining of the bearing/seal areas but will have to bring them to get the OD cut down. I'm including a photo or two of the measurements I've taken and the demensions I think are correct. My main question is the difference in the distance from the outside dust cup face and the inside of the rotor face. There is a difference of -.125" between the mustang rotor and the OEM rotor. What, if anything, should folks be concerned about?
Thanks
Fwiw, this is a rotor I machined to the specs above minus the OD reduction.

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Yes the difference could have a problem where the outer bearing will hit the spindle before you can tighten up the adjusting nut. I had this problem so I made a ring to go between the outer bearing race and the disk rotor to space it out.

 

[340duster]

Hi Guys, I did machine the Mustang rotors (Raybestos 6004R) and worked great for my dart. There were comments about not finding the rear seal. Here are two options:
SKF seals SKF
Timken seals Timken® National® 8121S 8000 Multi-Lip Oil Seal With Loaded Spring, 1.73 in ID x 2.34 in OD x 0.47 in W, Polyacrylate Lip, 70 to 75 Durometer | Source Atlantic
I measured the seal surfaces and confirmed they are correct 2.34" outside dia, 1.734" inside dia, .47" thick

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what are the final machining specs you used ?

 

[l6hmus]

Do I understand correctly that the outer and inner wheel bearings used are the ones used for the original KH rotors ?