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Old 11-07-2011, 06:33 PM
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57 Olds brake system.

Am doing a disc brake conversion on my brothers 1957 Olds 88. The original system has the pushrod from the brake pedal to the booster/master cyl right behind the base of the brake pedal, ie you are gaining no leverage at all from the pedal. I am wondering if it will work if I adapt a 1" bore dual circuit willwood type master cyl onto the back of the original booster? Or is the pedal pressure going to be too hard? I have been told its practically impossible to push the pedal if you just replace the old booster/master cyl with an after market unit. Help please!!

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Old 11-12-2011, 08:09 PM
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I don't see how the pedel effort would be more with an aftermarket master cyl, did the person who said this say why it would be? I was going to suggest a newer style master and dual diaphram booster to go with it to boot. Don't forget your prop valve
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Old 11-15-2011, 01:14 PM
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The pedal pressure is going to be greater because I am going from drums to discs. I am just wondering whether an aftermarket dual diafram booster would be more effecient than the factory one and maybe regain some of the effort required at the pedal. I have actually already tried to get the new booster in place and its a bit of a squeeze, so might be stuck with the old one yet or have to make a bracket to offset the position of the new one.
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