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Old 06-30-2012, 05:33 AM
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Disc on disc?

What master cylinder to use with 11" front GM disc and 11" rear Ford disc? I have arround 17" vac at idle. Do I use power or manual? I have not checked the pedal ratio yet. This is on a street rod and will be firewall mounted. Thanks.

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Old 06-30-2012, 06:31 AM
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Originally Posted by wibas View Post
What master cylinder to use with 11" front GM disc and 11" rear Ford disc? I have arround 17" vac at idle. Do I use power or manual? I have not checked the pedal ratio yet. This is on a street rod and will be firewall mounted. Thanks.
Ideally you'd want a bit more vacuum than that, but if you're sure you do have that available at idle, you can use a power brake booster. You're going to want about a 1200 psi capability, so best bet is to use a 9 inch dual diaphragm booster. Some info is here.
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Old 07-01-2012, 06:52 PM
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Hey thatnks for the info. What about using a hydrobooster?
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Old 07-01-2012, 07:41 PM
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Hey thatnks for the info. What about using a hydrobooster?
That is surely an option.
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