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PLYDO disk brake conversion?? Mopar guys?

Discussion in 'The Hokey Ass Message Board' started by fatluckys, Oct 7, 2004.

  1. Befrank
    Joined: Aug 24, 2005
    Posts: 69

    Befrank
    Member
    from arkansas

    I don't want to hijack this thread but, where can I buy body mounts for a 36 Ply coupe ? I have been seaching off and on for a couple of weeks. Thanks
     
  2. HemiRambler
    Joined: Aug 26, 2005
    Posts: 4,207

    HemiRambler
    Member

    I don't know anything about Plydo or their stuff, what I can say is this - A buddy of mine wanted disc brakes for his 51(?) dodge truck. There was a kit available (plydo?) but they wanted STUPID money for it. So here's what he did: he got a caliper mtg bracket/dust shield from a full sized GMC 4x4 and the matching GM calipers. He redrilled this for the pattern on teh Dodge spindle. He then scrounged the bone yard and found some FWD rotor hats that slip over the stock hub (I'm sure he redrilled these to fit) the rotors weere slightly smaller OD than the GMC so the caliper was a little "proud" - so he pie cut the caliper mount section and slipped it right back in place - the width of the saw blade was all he needed to move it slighlty back in. He then welded it. All said and done it is the slickest brake conversion I have ever seen bar none. It blows away the "PRO" stuff I see for sale. Definitely slicker than snot on a door knob.
     
  3. fstfish66
    Joined: May 28, 2005
    Posts: 376

    fstfish66
    Member
    from eastern pa

    how can i find this mr street rod??? intrested in shock relocation,,please e mail me fstfish66@aol.com thanks
     
  4. fstfish66
    Joined: May 28, 2005
    Posts: 376

    fstfish66
    Member
    from eastern pa

    shock relocation on a 40 dodge coupe,,thanks
     
  5. Scarebird
    Joined: Sep 26, 2006
    Posts: 1,015

    Scarebird
    Alliance Vendor
    from Moita, PT

    Both the Rusty Hope and AAJ kits require the customer to drill and tap the spindle for 5/8" bolts? This is no solution at all.

    We just need to check hose routing and ours is in the can
     
  6. 50dodge4x4
    Joined: Aug 7, 2004
    Posts: 3,534

    50dodge4x4
    Member

    Please keep us posted. I seem to have been involved with several brake conversion in the past few years. What years will the new kit cover? I see you list kits from 64 & up Mopars, are you planing on filling the gap with kits for Mopar cars/trucks between the 40s and the 60s? Gene
     
  7. Scarebird
    Joined: Sep 26, 2006
    Posts: 1,015

    Scarebird
    Alliance Vendor
    from Moita, PT

    Yes, that is our plan. These brackets, spacers and bolts should cover 1940-54. Need to check the hose routing- they bolt up to the spindle just fine.
     
  8. 50dodge4x4
    Joined: Aug 7, 2004
    Posts: 3,534

    50dodge4x4
    Member

    For your info: With a few modifications the brackets could also fit the old beam axles and also trucks. The difference is the axles have 3 bolts to hold the backing plate to the spindle instead of 4. (a 39 independent suspension is the same as the axle spindle, least mine was. They also have the tappered bearings.) Gene
     
  9. 4woody
    Joined: Sep 4, 2002
    Posts: 2,110

    4woody
    Member

    FWIW my 38 Chrysler (car of course, and 1st generation IFS) used the same backing plate arrangement as the early trucks, not the later cars.

    RustyHope.com mentioned above is aka olddaddy here on the hamb.
     
  10. Scarebird
    Joined: Sep 26, 2006
    Posts: 1,015

    Scarebird
    Alliance Vendor
    from Moita, PT

    Went to a friend's garage today- he has several vintage Mopar's, among them a 47 DeSoto. The spindle uprights are the same, so I mocked up the bracket, rotor and disc. Went very well- uses Aspen rotors and Challenger calipers. Pix attached. The hose brushs the spindle slightly, but since they move together it is no big deal. We will now order the special bolts and outer nut needed to do this.
     

    Attached Files:

  11. fstfish66
    Joined: May 28, 2005
    Posts: 376

    fstfish66
    Member
    from eastern pa

    did the aspen rotors fit the spindle with out modifacation???
    i currently have a master power system,,,was on the car when i bought it,,but it has 4 3/4 bolt pattern,,,,and i have mopar 4 1/2 on the rear,,im wanting to convert the front to 4 1/2...i think the spindle was modified at master power brake,, i may nned a new spindle,, i have not taken it apart to see,,what i need,,i also am highly considering a fat man drop upright,,,currently the springs have been cut and doesnt ride rite,,, any ideas on converting form 4 3/4 to 4 1/2 bolt pattern ???not sure if theres enough room on the rotor to redrill:cool:
     
  12. Scarebird
    Joined: Sep 26, 2006
    Posts: 1,015

    Scarebird
    Alliance Vendor
    from Moita, PT

    We had to use both a spacer and a bushing for the larger inner bearing, and mod both the bolts and the outer bearing nut- but in the end it uses Plymouth hardware and fits without modding the spindle one bit.

    If you take your apart, I may be able to dope out what they did to it and see if it can be rectified.
     
  13. George
    Joined: Jan 1, 2005
    Posts: 7,954

    George
    Member

    Mr Street Rod (805)522-9292 17459 Kranenburg av. Bakersfield, Ca 93312
     
  14. 48 Poncho
    Joined: Jul 24, 2005
    Posts: 702

    48 Poncho
    Member
    from Tennessee

    Did the conversion on a 33 Ply. PD coupe I had several years ago. If I remember correctly they were Volare/Aspen rotors and Monte Carlo calipers. Been a good while but I think thats correct. I traded a bunch of stuff to them for several parts/kits so I don't know the true cost.

    Hope it helps!

    48 Poncho
     
  15. 52plybizcoupe
    Joined: May 28, 2002
    Posts: 558

    52plybizcoupe
    Member
    from Brier Wa.

    i have a set of AAJ Brakes first conversins for my 52 Biz coupe and have had no problems mine were $500 hub to hub new that price might have changed gm montecarlo calipers (mid 80') and volare rotors
     
  16. fstfish66
    Joined: May 28, 2005
    Posts: 376

    fstfish66
    Member
    from eastern pa

    scare bird,,thanks ill keep it in mind,,when i get to some other front end mods,,,:cool:
     
  17. kmccann
    Joined: Oct 27, 2012
    Posts: 14

    kmccann
    Member
    from venice

    so what master cylinder will work for this conversion, I did the conversion but the master cylinder need replacing, and will it still mount under the floor on the frame? I have a proportion valve already.
    thanks for any help.
     
  18. kmccann
    Joined: Oct 27, 2012
    Posts: 14

    kmccann
    Member
    from venice

    so what is the master cylinder?
     
  19. mustang6147
    Joined: Feb 26, 2010
    Posts: 1,847

    mustang6147
    Member
    from Kent, Ohio

    I just read the first post, but want to warn DO NOT! go with plydo. The main reason is there return policy! It flat sucks, and thats if you can get ahold of them.

    On my 41 I used Brake Tech Solutions out of NC, I was very happy.

    The best way to find out part numbers for Plydo is call Fatman. They did a setup called "STOP DROP and ROLL" you can google it to. But either way will give you part Numbers. One other option is the P15D24 forums. There is a guy who posted a whole thread. I did mine there too.

    The master cylinder I used was out of a 77 vette.


    Stay far away from Plydo, thats one conartist setup there.
     
    Last edited: Oct 27, 2012
  20. fstfish66
    Joined: May 28, 2005
    Posts: 376

    fstfish66
    Member
    from eastern pa

    im now using a 1 inch bore master cyl,,for a disc/drum set up..the vett master i believe is more for a 4 wheel disc set up..i will switch it to a 1988 dakota master,when i get a few other things squared away..

    on my muscle car i have a 88 dakota master cyl which i cross refrenced from my old mopar performance master cyl that used a 15/16 bore,,,the dakota if for a manual brake disc/drum and is in metric which converts to 15/16 bore as well and works great on my barracuda all using stock 1976 dart 11 inch rotors and calipers,,,11 inch big chrysler drums on the back,,,


    the key is the master cyl bore size the smaller the bore the more pressure to the caliper with less leg effort

    the bigger the bore less hyd pressure but more fluid and more leg effort on a disc/drm set up
     
  21. coupe15
    Joined: Dec 22, 2012
    Posts: 4

    coupe15
    Member
    from NC

    scarebird.com is the best disc brake conversion supplier I have seen and used. Off the shelf calipers rotors and pads. Quick service and reply on any problem.
     
  22. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,476

    gimpyshotrods
    ALLIANCE MEMBER

    And, just so you don't have to take the word of a new guy, he's exactly right.

    I roll Scarebird on my daily. Rock-solid, every install.
     

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