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Technical Any vehicles come with disc/drum non power assist?

Discussion in 'The Hokey Ass Message Board' started by Budget36, Feb 13, 2021.

  1. 61SuperMonza
    Joined: Nov 16, 2020
    Posts: 489

    61SuperMonza
    Member

    The disc conversions for Corvair are non boosted as well. Non boosted brakes from this era don't bother me at all. I actually prefer them. They do require more pressure but I feel more in tune with the car.
    Power brakes and steering from this era removes all the feel. In a light weight ride power assist isn't necessary. IMO
     
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  2. nochop
    Joined: Nov 13, 2005
    Posts: 4,117

    nochop
    Member
    from norcal

    01F2C28E-DAC9-4C16-86C6-F09885654EAE.jpeg Disc Drum, stops on a dime straight and true. I am a little nervous about not having an e-brake though.
     
  3. bchctybob
    Joined: Sep 18, 2011
    Posts: 5,476

    bchctybob
    Member

    I used the CPP disc conversion and power M/C kit on my ‘55 F100 and had no complaints. It had a dropped stock axle. The stuff fit well and I just wanted to get it done and not make a project out of it. I used it for towing so I went with power brakes on that one.


    Sent from my iPad using The H.A.M.B. mobile app
     
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  4. Budget36
    Joined: Nov 29, 2014
    Posts: 14,422

    Budget36
    Member

    Towing days for this truck are long past. But the bias should be similar to your truck. Maybe I’ll check with h to em this week and see what they have. Thanks
     
  5. dumprat
    Joined: Dec 27, 2006
    Posts: 3,517

    dumprat
    Member
    from b.c.

    Lots of jeeps came with disc/drum and manual brakes. My 83 CJ7 is set up that way.
     
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  6. OLSKOOL57
    Joined: Feb 14, 2019
    Posts: 477

    OLSKOOL57
    Member


    While I have owned only for a few weeks, my ‘38 has non power disc/drum setup. Getting used to driving it. Not stopping like I think it should, might be doing pad/shoe refresh. It also has power steering which I am not doing very well with at the moment.
     
  7. jimmy six
    Joined: Mar 21, 2006
    Posts: 15,961

    jimmy six
    ALLIANCE MEMBER

    You should definitely fix that. There are many kits, my son got the cables from the Control Cable Co. and the handle mounted on the floor from Lokar or someplace like that. All easily adjustable, used “ess” links to keep the cables off the drive shaft.

    I installed Wilwood 4 piston discs on the front on my 56 Ford with 11” rear drums. Work great and I don’t see the POS tin can on my firewall.
     
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  8. Budget36
    Joined: Nov 29, 2014
    Posts: 14,422

    Budget36
    Member

    Yes, that’s what I’m looking to not see as well.
     
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  9. El Caballo
    Joined: Mar 3, 2001
    Posts: 6,318

    El Caballo
    Member
    from Houston TX

    My 1978 Ford F100 had manual disc/drum brakes, I still have a spare m/c for it.
     
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  10. MO54Frank
    Joined: Apr 1, 2019
    Posts: 440

    MO54Frank
    Member

    My Mom had a new 74 Duster with non-power disc/drum brakes.
     
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  11. seb fontana
    Joined: Sep 1, 2005
    Posts: 8,830

    seb fontana
    Member
    from ct

    '67 Ford Police Cruiser. Four piston [54mm] calipers and 11 x 2-1/2 rear drums. No power.
     
  12. nochop
    Joined: Nov 13, 2005
    Posts: 4,117

    nochop
    Member
    from norcal

    I’m going to do a frame off rebuilding process. Rocket 324, full fenders, paint and upholstery. Plan on doing a few upgrades along the way.
     
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  13. AHotRod
    Joined: Jul 27, 2001
    Posts: 12,261

    AHotRod
    Member

    I've used the 71-74 Chevy Vega master cylinder, it's 3/4" bore makes great manual pressure.
     
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  14. nochop
    Joined: Nov 13, 2005
    Posts: 4,117

    nochop
    Member
    from norcal

    That car has been in our family since the mid fifties. It had a 303 or 324 Olds with 4 2bbl carbs. I templated the original fire wall and am putting it back to how dad built it using a lot of the original parts. Since the break peddle assembly was fabricated by my dad and works, I’ll probably just leave it
     
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  15. crider
    Joined: Oct 21, 2008
    Posts: 410

    crider
    Member

    Mopars from the late sixties up into the 70's, Vegas, Monzas, square body S-10s to name a few
     
  16. Hemi Joel
    Joined: May 4, 2007
    Posts: 1,575

    Hemi Joel
    Member
    from Minnesota

    The key to manual disc brakes it's to have a pedal ratio of 6-7:1 so the pedal is not too hard.
     
  17. Dino 64
    Joined: Jul 13, 2012
    Posts: 2,460

    Dino 64
    Member
    from Virginia

    Generic late 60’s early 70’s Ford disc/drum non power assist or p- valves
    Dorman 99086
     
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  18. jimmy six
    Joined: Mar 21, 2006
    Posts: 15,961

    jimmy six
    ALLIANCE MEMBER

    That’s the key to all of it .... a 3/4” MC and a 5-1 pedal will put you thru the windshield with no power..
     
  19. jazz1
    Joined: Apr 30, 2011
    Posts: 1,547

    jazz1
    Member

    Had a '79 F100 no power disc, no power nothing and radio delete.
     
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  20. AMC; late '70's & early 80's Spirits and Concordes. They used Ford disk brakes in front, usually without power.
     
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  21. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,213

    Elcohaulic

    Use the master cyl for a 1975 Chevrolet Monza disc/drum car without power brakes..
     
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  22. brokedownbiker
    Joined: Jun 7, 2016
    Posts: 676

    brokedownbiker
    ALLIANCE MEMBER

    67 and up Mustangs. I have non-power disc/drum from a 1968 Mustang in my '66.
     
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  23. nochop
    Joined: Nov 13, 2005
    Posts: 4,117

    nochop
    Member
    from norcal

    That little master cylinder on my 32, see above is a mustang item. Probably used on other models
     
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  24. MMM1693
    Joined: Feb 8, 2009
    Posts: 1,353

    MMM1693
    ALLIANCE MEMBER

    I used a 79 chev 1/2 ton pu CARQUEST part#MCA 98952 Raybestos is MC39177. Manuel brake mc is a 1" bore power is 1 1/8" bore. GM intermediate cal in front and 9" ford in rear 15/16 wheel cylinder I believe off the top of my head.
     
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  25. Mustangs too.

    You do not need power assist for disc drums or even a split master. We ran a '55 Stude with the stock master and a disc drum setup for over a decade. ran I all over the country, never had any issues at all.
     
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  26. Beanscoot
    Joined: May 14, 2008
    Posts: 3,310

    Beanscoot
    Member

    Since there are tons of options from which to choose, it might be best to select all components - master cylinder, proportioning valve and individual brake parts from a vehicle with the same front/rear weight ratio.

    Secondary considerations would be to choose a setup of the same make as the car, and similar overall weight of vehicle.
     
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  27. Budget36
    Joined: Nov 29, 2014
    Posts: 14,422

    Budget36
    Member

    It’s possible I guess, but looking at the link that @swade41 provided, I looks like POL offers a dual manual MC that appears to mount on my original setup. I’ll have to contact them and verify. Price looks right and the safety of a dual system is worth it IMO.
    And yes I have lost a wheel cylinder before and had to limp home on the ebrake, so an upgrade is in order.
     
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  28. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,213

    Elcohaulic

    1) Pull the existing master cyl and see if the hole is deep or shallow. Next pick up a 1975 Chevy Monza master cyl with the same depth hole.. Make sure you spec manual disc/drum master..

    2) Pick up a Metering valve for the front brakes and a adjustable proportion valve..

    A brake metering valve is used to Balance the Braking Forces. It is only found on vehicles with front disc and rear drum brakes. The metering valve holds back fluid to the front brakes until enough pressure is created to overcome the return springs inside the rear drums.

    Metering Brake Valve Front Hold Off Disc Brake Conversion Proportioning 3/16" | eBay

    3) Adjustable Proportion Valve..
    JEGS 63022: Adjustable Proportioning Valve | JEGS
     
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  29. You are aware that what you are calling safety is a myth. If you bust a line perhaps, that is if you have a functional e brake and know how to use it and are good with spongy minimally functional brakes and a brake line failure is what takes you out. More commonly you loose the master and not a brake line.

    I am not saying that you should not use a dual master, they are a more modern system and are an upgrade from a single. But do not depend on it any more than you would a single system. Keep good lines, good brakes and etc. and always have a functional e brake and know how to use it. Please.
     
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