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Old 08-08-2010, 02:32 AM
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Help ID these rotors and how do they come off?

Hi guys,

Trying to figure out what these rotors came from. Currently on a T Bucket with a 58-63 Olds/Pontiac rear end. I have had these rotors off 10 years ago, but don't remember what holds them on! There are Phillips head screws on the back side, but that seems like it just holds a rotor ring. On the face of the hub you can see the end of threads, but how do you get to them?







Thanks for any tips on what they came out of - guessing post 70's and how to get them off. Seem to be bolted not just stuck on.

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Old 08-08-2010, 05:00 AM
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Looking at the pics, I would say that they are just seized on to the hubs....can't see any other way. Are those screws between the wheel studs?
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Old 08-08-2010, 05:26 AM
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Looks like the phillips head screws release the rotor from the axle flange, then you reach through the access hole in the axle flange and remove the axle retainer bolts, then pull the axle from the housing to get the rotor completely off for service. Rotor looks to be bolted to the back of the axle flange face.

I've seen this somewhere before, but can't remember where, might have been someone else here at Hotrodders, it sticks because the complaint was that you had to pull the axle to get the rotor out for relacement or facing. Seems like it was an early 80's aftermarket deal, but I'm not sure.

Maybe based off late 70's Mercury Marquis(just a fancy Granada platform)??
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Old 08-08-2010, 08:49 AM
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I vaguely recall seeing something like that set up on a Dodge truck, IIRC.
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Old 08-08-2010, 09:27 AM
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Looks to me like you need to wrench the axle retainer nuts off and remove the axle to get them off, kind of a silly way to build something if you ask me,
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Old 08-08-2010, 11:04 AM
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Guys,

Thanks for all of the replies!

Wish I would have taken one more photo before I put the wheel back on, but your comments jogged my memory that I used the access hole (between the two studs at the bottom in the photo) to pull remove some number of bolts and then the entire assembly comes out with the axle. From there you can get at any other bolts/screws from the back by standing the axle up on the studs.

Before I take it off, I want to make sure I have some planned down time with the car to get new axle seals because occasionally I get a drip out of them.

In regards to the access hole design itself, I think that may turn out to the key to identifying the brand as Eric mentioned. This may have been an aftermarket kit to adapt this axle housing to disc brakes.

Now the search continues to see if anyone has a clue about whose it could have been - maybe a replacement won't be available after all. Bummer.

I do have a buddy that works at a Ford dealer and has been around for years. I'll see if he recalls that design.

Thanks again for the help! Just getting it off, helps a ton!
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Old 08-08-2010, 11:47 AM
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I have seen that setup before. Cant remember where. You need to remove those Phillips heads from the back. If you cant get a straight shot at them with an impact driver you may need to pull the axles.
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Old 08-08-2010, 12:11 PM
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Thanks T!

Question is where can I find a replacement rotor ring? Would like to just replace the entire assembly, but if the ring is availble, I'm good for that.
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Old 08-08-2010, 12:34 PM
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No idea, not even sure what they are. I have seen those rotors before but to be honest I don't think I have ever seen those calipers.
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Old 08-08-2010, 12:41 PM
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Calipers are Airheart's. Parts available for rebuild which is already done. Rotors are undercut now, and would like to get something fresh.

We'll figure it out.
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Old 08-08-2010, 03:12 PM
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As I look at the pics, I wonder why the rotors even need to be attached to the axle flange via those screws. Seems that once the wheel is attached the lug nuts would be all you would need. Was thinking that the rotor could be bolt centric on those screws but that doesn't really make much sense either. You've piqued my curiosity, so let us know how it worked out.
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Old 08-08-2010, 04:03 PM
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Just part of the mystery...I need to update a number of items on the car - Jet Hot is going to redo my pipes - after 10 years under warranty. Figured I'd give them a shout out for doing so. As long as nothing happens with the brakes until then, I'll wait until the car goes down for the recoat, and work on the literal "bucket" list.

Hopefully someone will be able to identify the rotor/hub/hat by then and I'll be ready to go - October/November. Want to enjoy this nice cool SoCal weather we are having while I can!
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