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Dual Master
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albjerryg
Posted 2018-04-12 8:08 PM (#561498)
Subject: Dual Master


Regular

Posts: 51
2525
Location: lafayette,La.
I have a 1958 Saratoga with power brakes. Is there a Dual Master cylinder that is a direct fit for the old single master. I guess a remote fill would be best because you cannot get to the reservoir with the power brake unit. Thanks For any help. Jerry



(08.jpg)



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56D500boy
Posted 2018-04-12 8:49 PM (#561500 - in reply to #561498)
Subject: RE: Dual Master



Expert

Posts: 3132
2000100010025
Location: Lower Mainland BC
If you are staying drum/drum, this Cardone should work (based on a previous thread0:

56D500boy - 2016-11-23 5:58 PM

jimntempe - 2015-11-08 1:23 PM
Looking at rockauto this looks like the right MC is... [A-1 CARDONE 101323 Reman. w/ Reservoir Info Fury Base Model; Power brakes] It's a 1.00" bore.


Looks like the Cardone 13-1323M (manual, drum/drum) is still available and cheap. Looks like it would bolt right up (I'm thinking for my 56 CR)

http://www.rockauto.com/en/parts/cardone+select,131323M,master+cyli...

http://www.cardone.com/Products/Product-Detail?productId=131323M&p=...



REFERENCE: http://www.forwardlook.net/forums/forums/thread-view.asp?tid=59648&...



Edited by 56D500boy 2018-04-12 8:50 PM
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Powerflite
Posted 2018-04-12 9:41 PM (#561504 - in reply to #561498)
Subject: RE: Dual Master



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Posts: 4246
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Location: So. California
I like this remote setup, but it does require an adapter and a residual pressure valve for the rear because it is made for disc/disc. If interested, I will let you know where you can get the parts.



(Remote Master.jpg)



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albjerryg
Posted 2018-04-13 4:04 AM (#561524 - in reply to #561500)
Subject: RE: Dual Master


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Posts: 51
2525
Location: lafayette,La.
ok Thanks for the info. Jerry
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albjerryg
Posted 2018-04-13 4:06 AM (#561525 - in reply to #561504)
Subject: RE: Dual Master


Regular

Posts: 51
2525
Location: lafayette,La.
Yes I am interested would you let me know what the parts are and the adapter plate. Thanks Jerry
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Powerflite
Posted 2018-04-13 10:01 AM (#561539 - in reply to #561498)
Subject: RE: Dual Master



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Posts: 4246
2000200010010025
Location: So. California
The master cylinder comes from Ebay here:

https://www.ebay.com/itm/remote-fill-master-cylinder-street-rod-rat-...

You can get a 4-bolt to 2-bolt adapter from Mopar or Classic Performance. Some of them need to be opened up slightly to fit the master properly, but not by very much. Looks like Mopar increased their price again, making it pretty expensive for what it is. The ad says it is made of steel, but the ones I have purchased were aluminum. The CPP version is steel and cheaper, but may be a little too thin, I'm not sure. It might be worth it to make your own adapter at a local machine shop so You can get it exactly as you want it. The master has a 2nd step to a larger bore size. I had to insert 2 washers under the studs to keep it at that level. But with a custom adapter, you could create a relief for that larger diameter.

https://www.summitracing.com/parts/dcc-5249315

https://www.summitracing.com/parts/clp-mca-m

The remote reservior that comes with the kit might be useable, but it is a little too wide to fit well. It will likely hit the hood spring and interfere with the bellows. So I used a remote reservoir (part no. RR2) from Classic Performance Parts. You can get it at summit racing too.

https://www.summitracing.com/parts/clp-rr2

If you would like it to be a different color, you can get it anodized before you assemble it. But I think it looks good as-is on a black car like yours and mine. It comes with 4 mounting holes on the back of it, but I only mounted it with the 2 outer holes. Putting the inner ones in place is more of a pain, and aren't really necessary.

Oh, and here is the 10lb residual valve for the drum brakes. There are many different brands to choose from, but this is the cheapest one.

https://www.summitracing.com/parts/aaf-all41049

Be sure to use hose that is compatible with brake fluid. Most of them aren't. I got mine from Ebay, but you might be able to get it from your local parts store.

https://www.ebay.com/itm/Brake-Fluid-Compatible-Hose-6mm-1-4-ID-Moto...

Edited by Powerflite 2018-04-13 10:31 AM
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albjerryg
Posted 2018-04-13 10:34 AM (#561541 - in reply to #561539)
Subject: RE: Dual Master


Regular

Posts: 51
2525
Location: lafayette,La.
thanks you very much for the information I really do appreciate it. Again Thanks Jerry
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Powerflite
Posted 2018-04-13 1:25 PM (#561547 - in reply to #561498)
Subject: Re: Dual Master



Expert

Posts: 4246
2000200010010025
Location: So. California
Sure. One other thing to keep in mind is that this is a GM style master so it uses 9/16-18 thread on one port instead of 9/16-20 thread like the Mopar masters. Fortunately, the 9/16-18 is easier to find than the Mopar version.

And.... I recommend using 3/16 tube for the front disc brake port instead of 1/4 tube. Just use a 1/4 to 3/16 adapter at the brake tee. The reason for this is that the 1/4 tube is very stiff and hard to move the master out of the way when you need to remove your valve cover. If you use 1/4 tube (like I did ) then you will likely have to disconnect that tube before you can move it.

Edited by Powerflite 2018-04-13 1:35 PM
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56D500boy
Posted 2018-04-13 2:33 PM (#561548 - in reply to #561539)
Subject: RE: Dual Master



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Posts: 3132
2000100010025
Location: Lower Mainland BC
That's a great list Nathan. It should be a sticky so it is easily found by others seeking the same info in the near future.



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BigBlockMopar
Posted 2018-04-14 4:51 AM (#561588 - in reply to #561498)
Subject: Re: Dual Master



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Posts: 3420
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Location: Netherlands
If you would cut off the mounting flange of the old master cylinder, you have a nice base to fabyourself a 4-to-2 bolt adapter out of.
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