Doing a front disc swap, what else should I do?

Brakes, Steering & Suspension

  1. lebshiff21

    lebshiff21 FBBO Gold Member FBBO Gold Member

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    Getting ready to do a swap to power discs, while I have the wheels off, etc. what else would be worth doing? It’s the SSBC kit so the spindles stay. This is on a ‘65 Coronet with mostly original front end parts. My mechanically inclined brother (15 years as a mechanic) will be assisting, but we’d likely only have a weekend together to work.
     
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    • moparmarks

      moparmarks FBBO Gold Member FBBO Gold Member

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      Are you changing the master and port valve too?
       
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      • NJRR

        NJRR FBBO Gold Member FBBO Gold Member

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        Ball joints, tie rods, control arm bushings? You'll have to do an alignment if you change those.
         
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        • lebshiff21

          lebshiff21 FBBO Gold Member FBBO Gold Member

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        • Mopar Hunter

          Mopar Hunter Well-Known Member

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          Are you changing the brake booster?
           
        • NJRR

          NJRR FBBO Gold Member FBBO Gold Member

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          He's going from non-power to power. A new booster comes with the kit.
           
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          • NJRR

            NJRR FBBO Gold Member FBBO Gold Member

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            Not 100% sure if mounting the booster will be direct to the firewall or if you need an adaptor plate. Also, you might need a different brake pedal push rod.
             
          • moparedtn

            moparedtn FBBO Gold Member FBBO Gold Member

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            Got the same kit, working up the courage to tackle it. Supposedly complete?
             
            Last edited: Aug 3, 2019
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            • snakeoil24

              snakeoil24 FBBO Gold Member FBBO Gold Member

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              Change all your hard brake lines!
               
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              • lebshiff21

                lebshiff21 FBBO Gold Member FBBO Gold Member

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                Kit says it’s specifically for non power cars, so I’m hoping the bracket/plate is correct.
                 
              • 1 Wild R/T

                1 Wild R/T Well-Known Member

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                I want a show of hands... How many here have used that brake booster with good results? I've worked on probably a dozen cars with that booster..

                Most have marginal brakes but they are living with it... A couple come to me complaining about how poorly the brakes work...

                I've swapped three of those boosters on the same car & none of them worked, on one hand I start seriously questioning my diagnosis, especially when the CPP brake rep claims they've never had anyone complain about the booster....

                But just about that time I wind up talking to a buddy who runs a very busy vintage auto repair shop that mostly works on GM stuff & he tells me he's swapped out upwards of thirty of those boosters & now refuses to work on them, he either retrofits a hydra boost system or installs a OE style booster...

                I've started swapping in OE style boosters & have had very good results...

                The rest of the system probably works fine but if after installing the system the pedal seems to take to much effort try this...

                Jump in the car, engine off.. Pump there brake pedal three or four times, it should feel rock hard...

                Now while keeping you foot on the brake pedal start the engine... The pedal should fall about 1-1.5" if it doesn't your booster doesn't work..

                Try that on any power brake equipped vehicle that is pre ABS & you should feel the pedal drop...
                 
              • NJRR

                NJRR FBBO Gold Member FBBO Gold Member

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                I installed an SSBC front disc kit but kept it manual. I used a Right Stuff 15/16" bore disc/drum master cylinder. Car stops great and the manual brake pedal is not that hard to press down on.
                 
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                • 1 Wild R/T

                  1 Wild R/T Well-Known Member

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                  That is absolutely a viable option, but when you get the power brake setup two things happen, you get a bigger bore M/C & a linkage which changes the effective pedal lever ratio... Both contribute to a higher pedal effort..
                   
                • Smokinnjokin

                  Smokinnjokin Well-Known Member

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                  Its also a great time to inspect for corrosion inside your wheel wells and touch up undercoating. Brush on so-sure corrosion preventative compound to any bare metal hardware, and paint calipers and spindles with good quality enamel like PJ1 or POR-15. Take the time now, and your new components will look new forever.
                   
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                  • watermelon

                    watermelon FBBO Gold Member FBBO Gold Member

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                    add a moroso line lock


                    watermelon
                     
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                    • rrTor-Red

                      rrTor-Red FBBO Gold Member FBBO Gold Member

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                      I'd throw that booster in that kit in the garbage and do what 1 wild R/T suggest....get a OE booster
                       
                    • lebshiff21

                      lebshiff21 FBBO Gold Member FBBO Gold Member

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                    • NJRR

                      NJRR FBBO Gold Member FBBO Gold Member

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                    • 1 Wild R/T

                      1 Wild R/T Well-Known Member

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                      Not that familiar with the specifics of a 65 Coronet, how much space do you have for a booster? According to the SSBC link your 65 Coronet uses the same SSBC booster that a 72 Coronet uses... Obviously not the same OE part(Since OE was a single reservoir master) but the same aftermarket part.... Which would make me think you could use a 72 Coronet OE booster & M/C from a Disc brake application.... Rock Auto shows two available...
                      https://www.rockauto.com/en/moreinfo.php?pk=258443&cc=1498072&jsn=8
                      About $120 including core charge... Using that booster you need about 12" of room and you'll need the bell crank linkage like all Mopar power brake applications use... Someone who knows 65 vintage Mopar's better can probably confirm if this would work.. I'm guessing/betting it would & if I had a car to look at I would have a much better idea of whether I'm correct or talking out my butt....
                       
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                      • HEMI-ITIS

                        HEMI-ITIS STREETER on LI FBBO Gold Member

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                        Complete right down to the cotter pins.I stayed Emanuel:rolleyes:
                         
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