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    Leaky plug on master cylinder. Replace or repair?

    Distribution block and possibly lines from later (67-76) car makes cloning dual res setup pretty simple, especially when running front discs. On a drum brake car it doesn't need to be any more complicated than a brass plug in the distribution block port to the rear brakes and extending the rear...
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    Brake pedal is really stiff

    These things almost always turn out to be something stupid and overlooked. Now that you've replaced virtually all the major components, here are a couple more ideas for you: Correct pushrod or master cylinder used? Pushrod seated correctly in recess of master cylinder? Pushrod retainer...
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    brake bleeding firm now spongie.

    You DID bench bleed the master (on the car is usually best) with the bleeder tubes fully immersed in the reservoir fluid until ALL the air bubbles were gone. Some will bleed in just a few strokes, but don't be surprised if it takes awhile and your leg wears out before you're done (helps if...
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    Rear brakes lock up... front disc

    Mother Mopar has long been noted for their one size fits all proportioning valves that almost always cause the A bodied cars to prematurely lock up the rear brakes under hard braking or less than optimal traction conditions (wet pavement for instance), resulting in the car's tendency to spin...
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    Maybe a dumb question, 11.75 3 piece rotors?

    The large rotor swap is popular because it's effective, relatively inexpensive, and if you find or have the correct set of caliper brackets for your existing calipers, the rotors and caliper brackets are all you have to change out. The swapover would be possible without even loosening a front...
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    what master cylinder for disk/disk set up?

    Larger rotor size has nothing to do with master cylinder size requirements. Using the larger late B body rotors in place of the smaller ones has no effect on other brake system components. Inlarging front caliper bore diameter (73 to 75 A bodies used a 2.60" diameter piston bore, all other A...
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    Challenger Brakes on a Duster?

    I've read and reread all your posts in this thread and I'm still confused here. Do you have large ball joint upper control arms on the vehicle you want to install the disc brakes? If you do, the 73 to 76 A body, and the later F, M, J, and B body uprights (spindles) bolt in. The later...
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    Challenger Brakes on a Duster?

    Thanks for the heads up, I'll check it. If I find it's a problem, perhaps just a little bending of the steering arms will bring it in. If that doesn't fix it I guess fabbing up brackets to use the original hubs and uprights with Fox4 PBR calipers and discs will have to be done, it ain't going...
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    Challenger Brakes on a Duster?

    I'm going through this very thing on a 64 Fairlane to Granada disc brake swap because the flex lines coming out of the Fairlane drums point in the opposite direction compared to the Granada disc brake caliper (effectively the same as moving a caliper from front to rear or visa-versa). My...
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    Challenger Brakes on a Duster?

    Rick Ehrenberg's Mopar Action article is still a must read on this subject and the good news is the complete article is still available at http://www.moparaction.com/Tech/archive/disc-main.html
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    Challenger Brakes on a Duster?

    This is good advice to a neophyte for the most part, but mixing a variety of stock parts from different donor sources to come up with a working system is very doable and sometimes necessary. Depending on what parts you are mixing, it's also the easiest way to screw up if you don't know what...
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    Disc brakes

    For a street car? OEM! (original equipment manufacturer), especially calipers. The OEM stuff whether it's GM, Ford, Chrysler, or one of the imports is built to go the distance and do it reliably with shields and seals meant to be used the real world environment. Most cars manufactured in the...
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    Which Master Cylinder?

    It's basic hydraulics, the larger the master cylinder bore in relationship to the caliper and/or wheel cylinder bore, the higher the pedal pressure and the shorter the pedal travel. Generally installing a larger bore master cylinder than what is needed gives you a raised pedal pressure and the...
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    good deal yes or no

    I don't know what spinals are, but I paid 45 a side for the uprights complete dust cap to steering arm, and even including the flex hose off an eighties M body in a reasonably close U pull it yard. Upper control arms would have been another 10 a piece. Of course, by the time I replace the...
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    Rear disc Brakes on 8 3/4

    I see where this thread is nearly three months old, but glad to see somebody finally came up with a reasonably priced solution to the problem of putting disc brakes on an 8 3/4. Made up anymore sets? Are they for sale now? I'm guessing the brackets would also work with the 11.25 vented...
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    A Body Disc Brake Swap 101

    In addition to getting the correct caliper brackets for the size rotor you want to run, you also want to make sure you have the correct bracket for the type of caliper (either slider or pin type) you'll be using. Good reason for the first timer to get the complete assemblies (upright, rotor...
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    rear disc from grand cherokee on a 8 3/4

    While it seems everyone wants to sell you the GM "metric" calipers for "their" conversions, the various Ford/Lincoln rear disc brake setups from over the years have calipers that are probably just as common, with the 38MM Varga rear caliper from 94 and newer Mustangs the most common and easiest...
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    Brake upgrade questions

    2.45 ratio uses a housing different from all the other ratios requiring you to swap out the housing to change ratios.
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    Disc Brake Sizes?

    Larger rear rotor diameter will not of itself create an issue, aside from causing more unsprung weigh and possible clearance problems. It will generally cause the rear brakes to run cooler than a smaller rotor due to it's ability to dissipate heat faster. Rear caliper piston diameter will...
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