@tsolo thank you very very much for your presentation!! I am looking forward to the discs and hopefully make them work and show the way and the results! You just contributed a major part to that!
Steve I totally see what you are saying. When did you purchase yours? I'm wondering if the original machining dimensions changed? That's bizarre.
Lemans 850i sorry if you have the same issues as Steve, my intent was not to open a can of worms and for you to go down a rat hole! Definitely let us know what you get. I will definitely delete my posts if these turn into a big PIA. Steve thanks for your input!
I believe that the manufacturer modified the final machining of the Mustang blank to meet the original Pantera specs for Mike when he placed his bulk order. These rotors can be made to work but require some machining and if you do it correctly, they should be rebalanced. But….. they work. I called every machine shop in town and only found 1 that could or would do the balancing.
Steve
Hey guys…. You all are very appreciated!
no need to apologize! I was googling and reading here for many hours but I could not find any conclusion for the problem at hand..
im hoping to finish this thread with definite information so the next guy has some guidance how to tackle the problem!
And all of you are important to get there..
I work on the car in my garage by myself and I don’t have a lifetime to figure it out..
just started another thread about the external fuel filler I’m building for it… you know, when I have a spare minute between brakes, electrical, fuel system, steering and and and..I’ll post threads once I got parts and ideas.. lol
im steamrolling through this project and you guys are a BIG help providing resources and information which would take days for me to find!
AND a big big THANK YOU to PI Motorsports… Jerry…can’t say enough good things about him!
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@tsolo posted:I believe that the manufacturer modified the final machining of the Mustang blank to meet the original Pantera specs for Mike when he placed his bulk order. These rotors can be made to work but require some machining and if you do it correctly, they should be rebalanced. But….. they work. I called every machine shop in town and only found 1 that could or would do the balancing.
Steve
What sucks is they are suppose to be "bolt on" and done! Wouldn't that be nice! Steve you are the first one that brought up having to machine these. Anything can be made to work with some fenagleing and jury rigging. 
But I guess we all know we're working with a 50 year old car, so some of this is expected. Thanks for your input here. I will certainly temper my enthusiasm on these rotors in the future.
When caliper to wheel clearance is minimal, make sure that there is enough clearance for adhesive wheel weights (if you use them) to clear the calipers.
John
Clearance is between 3/8 and 1/2”
Does anybody know what the original thickness of a new Pantera front rotor was? 21mm?
@LeMans850i posted:I am very surprised that no vendor has original brake discs made for the Pantera….
FWIW, Pantera Performance Center in Carson City, Nevada sells bolt on direct-replacement rotors.
Larry starts with a Porsche Brembo rotor and machines it to the exact dimensions for our Panteras. That makes vented, slotted, cross-drilled rotors available to us.
Not to be ungrateful for your help, but the casting says clearly the minimum thickness is 19mm!
If you convert inches to mm it gets you to 17 mm after refinishing it…
the curvature that goes from the disc to the hat is exactly flush with the disc at 19 mm thickness… I do not think you actually would machine it creating a sharp corner / stress riser in that area! 17mm is definitely not correct!
regarding the original thickness of a new brake disc I thought it may be 20 or 21 mm?!
I did see the machined Porsche rotors to fit the Pantera but the price was not anything I am willing to spend… Over $800 per disc?! if I remember correctly…
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My Centric/Stop Tech rotor is 20.98mm or .825" thick. The minimum thickness stamped on the rotor is 19.81 mm
Thank you
that makes sense!!
@LeMans850i posted:I did see the machined Porsche rotors to fit the Pantera but the price was not anything I am willing to spend… Over $800 per disc?! if I remember correctly…
Actually, PPC's vented & cross-drilled brake rotors (front & rear) are $350 ea. (I just checked the price 10 minutes ago).
Admittedly not cheap, but also not unobtanium. And it's a quality part!
now I can’t find them if my life depends on it …
could you please post the link…
edit: just called PPC… you are absolutely correct…
thank you!!!
p.s. still cannot find it on the website
Good news .. bad news….
here is the good news:
the discs arrived!!!!
bad news… the picture shows and I did call the company as well to verify it is only the disk - not the whole hub disk assembly!
….return to sender,
I was looking at it and thought maybe Machine the center out to have the right bore size 81.9mm and then Machine the thickness of the flange down to have the 9.2mm flange thickness… But the additional 1.5 mm are on the wrong side not centering the disk in the caliper so that’s not gonna work either. It would be just a cluster f@$&..
I think I’m gonna put the mustang to rest!
I don’t think Mustang is the solution…
(some may say “he gave up too early”, but I was reading a lot about that subject, and there were many many failures, and only not even a handful of success stories) . Just a few were successful with major effort and help from the manufacture of the disks… Not easily repeatable!
I’m going to order the disks from PPC... 350 dollars apiece 700 dollars for the axle … I want to see what I get ! one thing I really would like to see is the inside diameter if it has the proper fit going over the hub and center the disk! I think there’s a lot to ask from the studs, but not centering the disc permanently on the hub with the protruding cast for the bearings… The disc is not gonna just rotate, but when you apply the brakes, it tries to pull away from the center as well. Maybe I’m overthinking… Again…
Maybe I’m overthinking… Again…
I’m gonna see if I can come up with something better and more sensible but to get the Banana running Porsche discs it is!
I am bummed
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In a correctly dimensioned bolted assembly, when tightened to the correct torque, the studs do not work in shear but only in traction and the forces are transmitted from the rim to the hubs only by adhesion.
It is nevertheless preferable to separate the centering and fixing functions, but it is not essential.
Can’t quite tell since it is in the bag, but what you received is a one piece casting incorporating the hub and the rotor, correct??
Honestly, this is what I expected you to receive. The effort Mike Drew put in to have Centric provide just the rotors was a one time thing. Perhaps it can be done again?
I am running Mustang rotors at all four corners with Willwood four piston super lite II calipers. Functional but with some drawbacks due to diameter. I sourced them off of eBay sellers
originally the rotor and the hub were separate pieces and you can still find old stock rotors. It became cheaper and more efficient to machine hub and rotor from a single casting. I believe almost all the raw castings are made at two or three China factories,
Larry
Rene your Rotors came with the hub, bearings and the wheel studs! Thats surprising. I have the same part number and the rotor came bare!
@tomsealbeach posted:Rene your Rotors came with the hub, bearings and the wheel studs! Thats surprising. I have the same part number and the rotor came bare!
Tom, I am betting you got those rotors many years ago when they were still being supplied as separate rotors. Or you got them during the Mike Drew special order program.
Yes?
Larry