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56 vs 57 Brake drum
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57Groucho
Posted 2016-07-26 10:07 AM (#517630)
Subject: 56 vs 57 Brake drum



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I'm in need of a RR brake drum/hub for my 57 Fireflite. I have a guy locally that has a 56 Desoto parts car (he had a 57 but I missed my window on buying that car because of space restrictions and now it's gone, bummer) that I can scavenge one from but I'm unsure if they are interchangeable between 56 & 57. Thanks in advance for the info.

-Dan
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Powerflite
Posted 2016-07-26 12:56 PM (#517638 - in reply to #517630)
Subject: RE: 56 vs 57 Brake drum



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I can't answer your question for certain, but I usually see the interchange from '57-'63. If the '56 Desoto had a true 8 3/4, there is a chance that it may interchange. But you could always just purchase this:

http://www.ebay.com/itm/142065694963?item=142065694963&viewitem=&vx...

But make sure you inform him of cheaper shipping methods. Shipping to me says $84, which is ridiculous.
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57Groucho
Posted 2016-07-26 3:27 PM (#517651 - in reply to #517630)
Subject: Re: 56 vs 57 Brake drum



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How does one go about separating the drum from the hub? It seems like a one piece deal to me but I've been told that they come apart.
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Powerflite
Posted 2016-07-26 11:59 PM (#517703 - in reply to #517651)
Subject: Re: 56 vs 57 Brake drum



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The studs are swaged to the drums so you will have to use a cutter to cut the swage off. If your current drum is truely junk, then it shouldn't be an issue with cutting it up to get the studs off. Of course, you will also need to replace the studs when you are done.



(Drumstuds02.jpg)



Attachments
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Attachments Drumstuds02.jpg (67KB - 133 downloads)
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57Groucho
Posted 2016-07-28 3:31 PM (#517839 - in reply to #517630)
Subject: Re: 56 vs 57 Brake drum



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Posts: 127
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Location: Minneapolis
I found a new drum locally for a reasonable price but I'm not familiar with the swaging process. I've looked up some information online and it looks like it takes a special tool and a very large press. Does anyone know of an "old school" mechanic/machine shop in MN that might be able to help me out with this?

-Dan
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Powerflite
Posted 2016-07-28 4:01 PM (#517840 - in reply to #517839)
Subject: Re: 56 vs 57 Brake drum



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You don't need any special tools except a cut-off tool. If you don't care about the old drum, just cut the studs & drum around where they are mashed together. Once you have cut the swaged part of the lugs & drum, then just hit the old studs out with a hammer (those are going to be junk too) and the old drum should come off. If you insist on swaging the new studs to the new drum, then you are going to need special equipment, but it isn't necessary. You can "press" the new studs in just by tightening a lug nut turned backwards with some washers under it. Then just let the new drum ride free without swaging it to the new studs. No special equipment needed.
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57Groucho
Posted 2016-07-28 4:04 PM (#517841 - in reply to #517630)
Subject: Re: 56 vs 57 Brake drum



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Posts: 127
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Location: Minneapolis
Just letting the nuts hold the drum on, that makes sense. Thank you.
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