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Author
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Topic: 10 x 2 ・ rear brake swap [Sigtauenus]
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68 S-code GT
Gearhead Posts: 1175
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 01-16-2003 07:42 AM
   
Sam,
In the technical article you mentioned that the rear brake cylinders happened to be the same! Did you find out if the stock proportioning valve was the same or did you use an after market adjustable one?
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SteveLaRiviere
Administrator Posts: 34763
From: Saco, Maine
Registered: May 99
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posted 01-16-2003 08:38 AM
When I added 10 x 2 1/2 drums to my Sprint I didn't change the PV.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
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ccode67
Gearhead Posts: 1743
From: douglasville,ga,usa
Registered: Mar 2001
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posted 01-16-2003 08:47 AM
quote:
Originally posted by SteveLaRiviere:
When I added 10 x 2 1/2 drums to my Sprint I didn't change the PV.
I didn't change anything other than the backing plates, shoes and drums. Now if it it had discs on the front I'd be happy. ------------------
Stuart
MCA #48902
M&M #1091
67 stang 5 speed, 351W,
Edelbrock Performer RPM package http://www.mustangsandmore.50megs.com/ccode67.html
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Moneymaker
Administrator Posts: 19964
From: Lyons, IL, USA
Registered: May 99
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posted 01-16-2003 12:33 PM
My "OLD" 1973 Wagner brake parts cataloge shoes the same wheel cylinders for all ten inch Mustang brakes.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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68 S-code GT
Gearhead Posts: 1175
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 01-17-2003 07:30 AM
NPD shows the 390 cars having 13/16 piston cylinders? I can・t remember what I put on my FB. quote:
Originally posted by Moneymaker:
My "OLD" 1973 Wagner brake parts cataloge shoes the same wheel cylinders for all ten inch Mustang brakes.
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sigtauenus
Gearhead Posts: 1847
From: Beaufort, SC
Registered: Jun 2000
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posted 01-18-2003 11:57 PM
I happened to have an adjustable proportioning valve because I used the SSB conversion for my front discs. I also acquired the correct factory 68 distribution/proportioning valve setup but haven't installed it yet. Looking at the fact that both wheel cylinders were the same diameter and both brake shoes were the same (10"), I would think there is no need to change the proportioning valve if you already have discs up front and 10" drums in the rear. I've never seen that addressed anywhere from the early Shelby mods to the later big block cars with 10x2.5 brakes. HTH,
Sam
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68 S-code GT
Gearhead Posts: 1175
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 01-19-2003 11:35 AM
Thanks! 
quote:
Originally posted by sigtauenus:
Looking at the fact that both wheel cylinders were the same diameter and both brake shoes were the same (10"), I would think there is no need to change the proportioning valve if you already have discs up front and 10" drums in the rear. I've never seen that addressed anywhere from the early Shelby mods to the later big block cars with 10x2.5 brakes.HTH,
Sam
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sigtauenus
Gearhead Posts: 1847
From: Beaufort, SC
Registered: Jun 2000
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posted 01-19-2003 04:01 PM
quote:
Originally posted by 68 S-code GT:
Thanks!
Your welcome! That being said, I am not a mechanic nor a brake expert, that's just based on my own understanding of brake systems and some basic physics.
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