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11" Brake Conversion woes

Discussion in 'Early CJ5 and CJ6 Tech' started by manganjb, Mar 12, 2010.

  1. Mar 12, 2010
    manganjb

    manganjb Member

    boston, ma
    Joined:
    Aug 2, 2009
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    100
    Ok, so I feel like I've been here before ... I have been working on my brakes for like the last 6 months! I've just been piecing them together. They are the stock 9" ones for my 1971 cj5. I replaced all the wheel cylenders (front and back), replaced the front shoes and machined the drums ... but today I went out for the first time to drive around the block ... I had adjusted the brakes too tight and burnt my brakes ... As I pulled back into my driveway they basically seized up! That was the last straw for me ...money just down the drain! They didn't work great anyways ... I've heard great things about the 11" conversion ... I'm thinking of just buying from Herm (front and rears ... I think it's only $600)... I haven't heard about any other places selling them.

    My concern:
    1. My hubs are swagged unto the drums, if I don't care about the drums anymore, can I just take a grinder/cutter to the studs and knock them out? I know I have to get really up close to the drum, where the "swag" is ... And then I can just buy new studs and put them on my old hub with my new drums from Herm. Does that make sense? I'm just trying to avoid going to a machine shop ...

    2. Any reviews on the 11" setup ... they seem to work great for people... It seems like it's just a simple buy and plug in setup. I have a dual master cylinder and can use that ...
     
  2. Mar 12, 2010
    garage gnome

    garage gnome ECJ5 welder

    Western MA
    Joined:
    Jun 19, 2009
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    3,092
    1. If you have a hydraulic press, you can press the hubs out and reuse them on the 11" drums.

    2. they work great for me! sure, use the dual MC. It is a good safety upgrade.
     
  3. Mar 12, 2010
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
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    Dec 22, 2002
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    4,422
    If they are swagged onto the studs, are you sure they aren't 10" brakes? don't know of any 9" brakes that were swagged on. Screwed on, yes.
     
  4. Mar 12, 2010
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
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    4,275
    Some 9" brakes are swaged, the ones on my '48 CJ2A were. At one point I thought the military Jeeps had screws and civilian setups were swaged, but I cannot confirm that. My FIL's '52 M38 has screws.

    If you press them out you run the risk of hogging out the the holes in the hubs. If you don't care about the 9" drums, by all means grind away!

    The 11" brake upgrade is widely regarded as one of the best upgrades people make to their Jeeps. Just be sure to get the non-finned drums so you don't have fitment issues with your stock wheels.
     
  5. Mar 12, 2010
    manganjb

    manganjb Member

    boston, ma
    Joined:
    Aug 2, 2009
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    100
    thanks guys for the advice ... I'm pretty sure they're 9 inch brakes ... I actually hope they are because the braking really worked for sh%t ... The biggest concern I have is keeping the hubs ... they are expensive. So what some of you are saying is, I can grind/cut the studs away from the drum and the hub should fall away?? Without damaging the hub?
     
  6. Mar 12, 2010
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    Nov 6, 2002
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    Not quite. If you cut/grind the studs off flush with the drum you will still have to punch them out with a hammer and a drift. Be sure to use a big socket or a pipe fitting under the backside to keep from bending the hub! Once the studs are all punched out you can separate the hub from the drum fairly easily. You'll of course need some new studs but your FLAPS can hook you up there, They are a very common 1/2-20 thread.
     
  7. Mar 12, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    5,474
    A press is really the best way to get the studs out after you grind the head off. It's also the best way to get the new ones in. Check with a shop as they will usually do them for very little (its easy for them) compared to the chance of messing up a hub.

    FWIW - all of my 2A and 3A rigs have had swegged studs on them (and all were 9"). Never saw a set that wasn't till I worked on a 5 and up.
     
  8. Mar 13, 2010
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
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    Aug 15, 2009
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    799
    For what it's worth my 62 had the screws, before I put on the 11's on. I had to drill out the screws because the po had the heads all messed up.
     
  9. Mar 13, 2010
    manganjb

    manganjb Member

    boston, ma
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    Aug 2, 2009
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    another quick question ... do you recommend getting all four 11" drum upgrade ($600) with Herm ... or can I "get away" with just doing the front ... it's much less expensive ... but if it's worth it, and I'm planning on keeping this jeep for the rest of my life ... then I'll do it
     
  10. Mar 13, 2010
    manganjb

    manganjb Member

    boston, ma
    Joined:
    Aug 2, 2009
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    also, is it worth going to a junkyard and picking through what I might find to see if I can piece it together? I guess I would be looking for the backing plate, and then I could buy everything new ... It just seems to much easier going with Herm, just more expensive ... I've looked through a lot of forums and I go back and forth
     
  11. Mar 13, 2010
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
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    Aug 15, 2009
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    I did mine when I had the chance. I put the front on with all new lines then a few months later when the mood struck me I did the back. I got all my stuff from an old postal jeep. cool part about the 11" breaks is all the soft lines wheel cylinders springs and stuff from auto zone. they had most of the stuff in stock. If it were me I would go to the junk yard and look around. I think I only have around 200 bucks in mine.
     
    Last edited: Mar 13, 2010
  12. Mar 13, 2010
    manganjb

    manganjb Member

    boston, ma
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  13. Mar 13, 2010
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
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    This is the only pic i have of mine this was when i was taking them off the Postal.


    [​IMG]
     
  14. Mar 13, 2010
    Rondog

    Rondog just hangin' out

    Parker, CO
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    Kinda depends on you, I reckon. If you can afford the whole shebang from Herm or R&P, then that's certainly the quickest, cleanest and easiest route. If you're not pressed for time, and don't mind scrounging, junkyard will work, but you're likely to throw away everything but the backing plates and have to buy all new stuff anyway.

    Sounds like your Jeep is running and rolling already, just needs to stop too? Get the kit from Herm if you can afford it. I'd do all four at once if it was me, liable to run into issues if you don't.
     
    Last edited: Mar 15, 2010
  15. Mar 14, 2010
    gibson-d@sbcglobal.net

    gibson-d@sbcglobal.net Member

    Houston, TX
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    Feb 11, 2007
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    At present, on my '71 I'm running 11" fronts and 10" rears. Soon I'll do a Saganaw conversion and D30/11" fronts. My present front 11"ers will go to the rear.
     
  16. Mar 14, 2010
    manganjb

    manganjb Member

    boston, ma
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    Aug 2, 2009
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    With just the 11" fronts does it stop ok? I'm going to do just the fronts for now because of money
    Posted via Mobile Device
     
  17. Mar 14, 2010
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
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    mine stopped pretty good with the 11's just on the front. I would lock them up from time to time, never could do that with the 9"
     
  18. Mar 15, 2010
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
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    Sep 10, 2003
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    I used backing plates from a 1971 bronco on mine. I recall them being about $30 per plate (bought all four at once to save shipping).
     
  19. Mar 15, 2010
    manganjb

    manganjb Member

    boston, ma
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    did you find them on ebay? What did you type in to search? So, if I can recall, I can use 1970's Bronco, Ford pickup's, and later model cj's ... It looks like it might be worth looking around to see if I can find parts for all 4 ...
     
  20. Mar 15, 2010
    lynn

    lynn Time machine / Early CJ5 HR Rep Staff Member

    Huntingdon PA
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    Sep 20, 2002
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    3,437
    See PM.
     
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