1. moparstud440

    moparstud440 Well-Known Member

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    I have a 1969 barracuda that I am upgrading to disc brakes. I am going to use the front brakes from a 1982 Dodge Diplomat. I'm working on gathering all the parts and pieces I need so I can hopefully do the swap in a weekend. Would the hoses from a 1982 diplomat work or what application car would work (I'm thinking something along the lines more of a 1975 Plymouth Duster, etc that would had factory disc brakes)? Trying to figure that out before I buy new hoses.
     
  2. dukeboy_318

    dukeboy_318 Our Lives, Our Fortunes and Our Sacred Honor. FABO Gold Member

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    usually use the ones from the donor car. That said, I'd measure first. or at least pull up the specs and compare.
     
  3. Jimacuda

    Jimacuda Well-Known Member

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    I've used the F/M body hoses. Just remove the bracket from the hose.
    1980 the fixed point for the flex hose move from in front of the axle to behind on the F and M body frame rail.
    80 up calipers have a better bleeder location.
    Avoid the phenolic piston calipers.
     
  4. moparstud440

    moparstud440 Well-Known Member

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    I was comparing the fitting of the brake hose that connects to the brake line. On an A Body it is straight where as on a F/M body it is 90 degree. Didn't know how much of a different this would make.
     
  5. 4mulas

    4mulas Fixem'up

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    do you or are you using a factory sway bar?
     
  6. moparstud440

    moparstud440 Well-Known Member

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    Yes factory sway bar is installed and will be used.
     
  7. 4mulas

    4mulas Fixem'up

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    Okay. So you’re going to need to rear mount the caliper’s so they don’t interfere with the sway bar. You will need a 15” brake line so the mid eighties diplomat ones will work also another one that is 15” is 69 camaro with disc brakes. Either or. Doctor diff supplies the ones of a 69 camaro for this type of conversion. If you choose, You may Able to find braided steel ones for a camaro application easier than diplomat
     
    Last edited: Jan 14, 2020
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    • Oldmanmopar

      Oldmanmopar Going left turning right FABO Gold Member

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      You will need to use brake hoses for a 72/73 b-body on early A-body. You will be mounting the calipers behind the spindles verses mounted in the front like a 73 -76 a-body. Because you will not be able to steer, The calipers will hit the wider early stabilizer bar .

      Your metal line is at the rear of the wheel on the body. On a 73-76 there is a length of metal line added to the hose to go behind the spindle moving the hose to the rear when they are mounted in the front. B-body hoses do not have that extra length.

      I use them on all conversions and swap the spindles from left to right on 67-72 a bodies unless you are using the 73-76 control arms and later stabilizer which is narrower. The picture below will show you the difference in the early to late stabilizer and how much wider the early style is. When the caliper is mounted in the front it will hit when steering the car.

      susp2.jpg

      DSCN1673.jpg
       
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      • 4mulas

        4mulas Fixem'up

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        Sorry to disagree, but 72 b body brake hose are not what he needs.

        get 15” camaro or diplomat hoses
         
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        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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          At the time I did mine, I did not know about Camaro hoses, which several guys on here claim work well. I used Volare? which I spose is same as Diplomat. They are a bit long with the calipers rear mounted, but "a twist" takes care of that
           
        • 4mulas

          4mulas Fixem'up

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          this is the issue when rear mounting. The factory intended the hose to cross the path of the steering axis of inclination which provided for the least hose movement when steering. When rear mounting you need the 15”’s to accommodate the caliper when it is furthest from the frame in a steering moment. yes, a sort of twist can get the hose to settle nicely where it will not be in the way of anything.
           
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          • DentalDart

            DentalDart Well-Known Member

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            I got these for my disc brake swap as recommended by someone on FABO. I havent hooked up the fronts yet, but here's to hoping they work out great!

            Screenshot_20200113-172629_Chrome.jpg
             
          • Oldmanmopar

            Oldmanmopar Going left turning right FABO Gold Member

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            You don't have a clue on what you are talking about. If you Mount the calipers in the front on 67-72 with a stabilizer and see how far it steers. The hose with the extended line is to mount them in the front 73-76 with the rail attachment behind the wheel on the frame. Several hoses from different models will work. I get them from a Local NAPA Dealer. He gets me them for a 72/73? b-body they seam to fit perfect . On 69 back you need to dremmel out the attachment bracket on the rail to get the clip on. These hoses eliminate the extra metal line attached to the hose needed on the front mounted cars with the hose attachment on the rail behind the wheel. As seen on the picture posted above. I have been using these hoses for many Big bolt conversions when mounting the calipers in the rear of the spindle. Like I said there are probably many other hoses that will work but these work for me the best on 70-72 a body cars they are a direct fit.
             
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            • 4mulas

              4mulas Fixem'up

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              This is more than once you you like to get confrontational with me, I don't know what your problem is. YES I have a clue. Its apparent that you CLEARLY DID NOT read all of the posts carefully. YES if you mount the caliper on the front of an early A body that is equipped with a FACTORY sway bar they will hit said sway bar, which is what I CLEARLY stated in my second post on this thread. AND which is why I qualified all of this with my FIRST question on my FIRST post of this thread.

              So I guess myself, and Doctor Diff, a well known company providing brake and differential solutions, are both wrong. FYI, phone Cas Eslick at dr diff if you like, a very nice guy and always more than willing to help, and ask him what hose he uses for this very application......

              Do yourself a favour, read the posts carefully before replying. The next time you convert a car to disc brakes and rear mount the caliper’s, put away the dremel, and buy yourself 15” long 1969 camaro hoses, (disc brakes application not drum).

              If you’re front mounting the caliper’s, the OEM 73-76 dart hoses are just fine.

              I believe the essence of your thoughts are on track however when you make post’s it seems as though you have a hard time articulating yourself and they can be somewhat confusing at times. 73 b body hoses (also near 15” (14.7-8”))can work but as you said you have to dremel out the bracket. The only 72 b body hoses I could find won’t work period. Wrong fittings. No dremel work required with 69 camaro hoses.
               
              Last edited: Jan 14, 2020
            • 4mulas

              4mulas Fixem'up

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              I know brakes have been discussed in a few different recent threads but I can remember if you ever said if you front or rear mounted your calipers?
              If you rear mounted them these hoses may not work for you, and despite what Oldmanmopar was saying I highly recommend, as recommended by doctor diff, that you use the 1969 camaro hose for disc brake application. Maybe don’t even open the inline tube package so you can return it if this is the case. All the hoses you need are available individually on rock auto.

              Any one of these will work in the aforementioned scenario
              7867D23E-1104-494C-BFD0-1208962D239A.jpeg

              These are actually the same length as the ones you have but eliminate the 3-3.5” piece of solid metal built into the hose (this is what oldmanmopar was having a hard time articulating that you don’t need/won’t work for rear mount application).

              as for your rear hose just order it for your actual application.
               
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              • DentalDart

                DentalDart Well-Known Member

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                I got a sway bar so I'm assuming I will have to rear mount them and i already opened the package as i installed the rear line. I guess I'll cross the "yay they work or the F*** me they don't work" this weekend when I get to the front lines.

                Thanks for the heads up if they don't work I'm pretty sure the lines are 15in but if they dont it gives me a excuse to buy more parts :steering:
                 
              • 4mulas

                4mulas Fixem'up

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                right on good luck with it! Do us a favour and if they do or don’t work report back. I’ve never actually tried the stock 73-76 A body hoses. I don’t think they will work but want to know if they do. This old dog likes to learn new tricks.
                 
                Last edited: Jan 14, 2020
              • DentalDart

                DentalDart Well-Known Member

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                Will do! I actually had calipers then I went to the junkyard and found a diplomat (which I took the wheels from) and decided to get the MC, brake lines, calipers and Distribution block. Then decided shortly after that I was going to buy all new parts because I wanted to be as sure as I could that they would 1. Work and 2. be as safe as possible with driving my kids around in the car multiple times per week.

                So if these lines dont work, even with being suggested, which I would assume it's because it was assumed I'd be mounting them in stock location I'll just get new ones. I have a gift card that needs to be spent anyways haha. I'm sure I can find more stuff at the auto store to buy for my car.
                 
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                • Jimacuda

                  Jimacuda Well-Known Member

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                  Quality brake hoses are inexpensive. I've always got a couple sets squirreled away.
                  Really, the entire brake system is pretty inexpensive...especially considering what you get for your $'s.
                  100_5017.jpeg
                   
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                  • DoctorDiff

                    DoctorDiff Well-Known Member

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                    Caliper/hose fitment:

                    Rear mount ('72 and older A bodies, '69 and older B-bodies):
                    Use '80 and newer slider calipers and '69 Camaro disc brake hoses

                    Front mount ('73 and newer A bodies, '70-'72 B-bodies and all E-bodies):
                    Use '79 and older slider calipers and '73 Mopar A-body disc brake hoses
                     
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                    • Dfr360cuda

                      Dfr360cuda MAGA Again

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                      So, for someone that isn't running a sway bar, is it better to front mount or rear mount your calipers ?
                       
                    • 4mulas

                      4mulas Fixem'up

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                      Assuming your hard lines on the frame are behind the wheel, put them on the front then and use the 73-76 oem duster brake lines
                       
                    • RedFish

                      RedFish Well-Known Member

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                      I don't mean to confuse but there is another way to do it. I didn't discover this method, just saw it here.
                      The early sway bar uses quite long end link kits loaded above the clip on the lower arm, so yes a forward mounted caliper would conflict with that.
                      Use the shorter end link kits for 73 and later A-body. Load them below the clip on the lower arm. The end link is a little low, closer to road hazards, but sway bar is now clear of the caliper. Hose and routing no longer a question.
                       
                    • RedFish

                      RedFish Well-Known Member

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                      After my above post I got to thinking... I don't know if wheel diameter becomes an issue or not.
                      Factory has sway bar ends positioned well inside a 14 inch wheel.
                       
                    • DentalDart

                      DentalDart Well-Known Member

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                      I have no leaks and think they will work! Disclaimer is I have not bed the brakes or driven with them installed yet but here some pictures.

                      I think the 69 camaro might be a better fit though?

                      20200125_112807.jpg

                      20200125_112821.jpg

                      20200125_113930.jpg
                       
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