Re: Brakes help
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It might help you to look up my old "Under the Index for Under a Grand" thread. I posted some pics on there of how I took off the booster and modified the pedal. |
Re: Brakes help
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Re: Brakes help
Thanks Mark and Billy. I never thought to raise the master cylinder. I can do that. Would making the pedal 2 inch longer do the same thing? More leverage.
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Re: Brakes help
The best bet would be if you could find a complete manual brake setup from a low option early FOX Mustang, Fairmont etc. That way you get the correct manual brake pedal, the aluminum master cylinder firewall mounting bracket, and master cylinder. As Mike Graham mentioned, the manual brake pedal pedal location on the pedal bracket is also different, but both holes are drilled, so simple to move the pedal pivot location. Not sure what the caliper bore size on your larger front disc brakes are, but that could potentially be a problem. My 85 Mustang started life as a 4 cylinder car, and I retained the small factory front disc brakes, and stock rear brakes from the 5.0 doner Mustang, and swapped all the factory manual brake pedal, master , and bracket from a stripper junkyard Mustang. Had no problems stopping the car from 107 MPH, and even with the much stronger bracket engine, going 128 MPH, the stock, small brakes worked pretty good.
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Re: Brakes help
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My car has 2 stubs welded on the brake pedal lever from the factory. I also put as large of a Rear wheel cylinder I could find on the Fronts. (4 wheel drums) |
Re: Brakes help
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It creaked and groaned and smoked , but it went, on a good size drill press . Kinda like drilling a center bolt into mono leaf springs..Ahnold probably could have done it a little easier. |
Re: Brakes help
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Re: Brakes help
Here's an adapter for the master cylinder. https://www.ebay.com/itm/Pro-5-0-79-...wAAOSw7cZcM86v
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Re: Brakes help
For what it's worth I changed the pedal ratio and wound up never installing the proportioning valve that I bought. If anything the pedal is a little soft, but I can get over 1000 PSI easily in one shot and it holds fine on the line (as long as the 2-step in on...).
It took a could of tries to find the right bore size for the master cylinder but it was worth taking the time to work it out. I wound up with 1 1/8 inch. |
Re: Brakes help
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I'm sure the pedal arm is hardened for safety reasons. |
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