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392 Discs & pics!
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Posted 2018-02-09 4:01 PM (#557776)
Subject: 392 Discs & pics!


Posts: 74
About conversion to disc brakes! You that has gone this route with an 57-59Chrysler with original booster and orig 14 wheels.. discs in front etc. I have som Q as:
What master cyl and size of bore are you running, anyone with tandem type?
Can you lock up your front wheels?
How mutch vaccum are your plant producing.
Pics welcome!
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Posted 2018-02-12 12:58 AM (#557923 - in reply to #557776)
Subject: RE: 392 Discs & pics!

Expert 5K+

Posts: 5070
Location: So. California
I use 15" wheels with 12" rotors from Scarebird, but this is what my master cylinder looks like. It is a disc/disc master with 1 1/8" bore like the original so I use a 10lb residual valve in the rear line. It clears the hemi valve cover pretty well, but you would never be able to remove the valve cover without removing the master too. My car isn't running yet, so I can't answer the other questions except that I have the same discs on my '58 DeSoto and it stopped really well, and stopped fast.

Edited by Powerflite 2018-02-12 1:13 AM

(57NY Firewall Closer.jpg)

Attachments 57NY Firewall Closer.jpg (188KB - 29 downloads)
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Posted 2018-02-12 6:18 AM (#557935 - in reply to #557776)
Subject: Re: 392 Discs & pics!


Posts: 3526
Location: Netherlands
With a disc/drum system, you'll need a 15/16" master cylinder most likely. Maybe even a 7/8", depending on pedal ratio, booster function and the (combined) cylinder diameter of the front calipers.

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