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Pondern' A Front Disc Brake Conversion

Discussion in 'Intermediate CJ-5/6/7/8' started by Lockman, Aug 24, 2019.

  1. Aug 24, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
    Joined:
    Dec 4, 2018
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    464
    Hello Gentleman,
    Can I get some advice on converting Rosie's front 11" drum brakes to a Disc Brake System ? She's a 1975 CJ5 with a D30 front axle & Selectro hubs. Who has the best engineered system , on the market today ?
    I'm thinking that the Discs will be an improvement for the Daily driving & go along nicely with the Auto Tranny I'm running. :bananatool:
    Thanks. & I appreciate all of you guys for any advice.
    Richie
     
    Last edited: Aug 26, 2019
  2. Aug 24, 2019
    zila

    zila I throw poop

    Rock Springs,...
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    Oct 6, 2003
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  3. Aug 24, 2019
    74CJ5 Renegade

    74CJ5 Renegade Member

    Houston, TX
    Joined:
    Dec 1, 2002
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    278
    Quadratec has the SSBC Drum to Disc conversion for $730

    For my conversion I bought later model CJ knuckles ( and all that is needed to mount those) and I will be getting Wilwood brakes.
     
  4. Aug 24, 2019
    Iandavidh

    Iandavidh Member

    California
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    Sep 24, 2018
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    182
    I have heard good things about Metcalf’s. I plan on going with him when I switch to disks.
    Plus quite a bit cheaper
    Brennan's Garage
     
  5. Aug 24, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
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    Dec 4, 2018
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    Is that Metcalf's Market or Metcalf's Submarine sandwich's ? :rofl: Do they go by another name , landavidh ? ( Thanks for your Help )

    ***** Update ***** Please disregard my wise -guy retort , Brother . I found what you were referring too.... A lot of others have used the Geo Tracker parts with success & Money saving & availability !!! Thanks.
    Richie
     
    Last edited: Aug 24, 2019
    Iandavidh likes this.
  6. Aug 24, 2019
    Focker

    Focker That's what I do, I know things and I fix stuff. Staff Member Sponsor 2019 Sponsor

    Tri-Cities WA
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  7. Aug 24, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
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    Thanks, Focker ..... I did find and read this by searching here. It has great detail & Tips , along with the updates. Great reference, Brother !
     
    Focker likes this.
  8. Aug 25, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
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    Dec 4, 2018
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    Well......... That was a fairly quick decision ! I 've pulled the trigger with a Horsepower Sales Conversion kit for ~ $ 650.00 . They offer a smaller caliper designed for zero grinding of the knuckles or the caliper . I've upgraded to the Timken bearings for another $ 40.00.
    If I prep correctly, I can do the entire job in one day. I'm fortunate that my Rosie is virtually rust free & clean right now.... So now's the time !
    Thanks everyone.... for your help in my decision. :cool:
    www.horsepowersales-llc.com
     
    FinoCJ likes this.
  9. Aug 25, 2019
    47v6

    47v6 junk wrecker! Sponsor

    Washington DC.
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    The amount of grinding you need to do to make the chevy/jeep kit you bought is negligible.

    Chevy 1/2 ton calipers 40.00
    Organic brake pads 7.00
    1977 Jeep cj5 disk hub is 89.00
    1977 Jeep CJ5 thick disk 20.00
    Timken Set 45 bearing 8.66
    Timken set 47 bearing 8.13
    Timken hub seal 6.77
    Brake lines can be as cheap as 6 bucks each or 20 bucks for braided.
    Chevy 1/2 ton caliper mount 63 bucks each
    a box of 10 studs is 13 bucks

    So this whole kit is about 520 bucks plus shipping for all new parts. When I did my conversion, rock auto was selling calipers for about 12 bucks each with no core charge.

    One thing you need to be aware of is that it looks as if they are selling the disk brake inner bearings. The drum spindles and the disk spindles are not the same. You can use disk hubs and drum spindles, but you need to make sure the bearings and seals are for the drum spindles.

    I bet if you shopped around you could buy the parts even cheaper, but that takes a bit of time. The prices I got were mostly from rock auto. I did my whole conversion for really cheap when I bought sale parts... Like under 200 bucks for everything.
     
    Rich M. likes this.
  10. Aug 25, 2019
    Dphillip

    Dphillip Sponsor Sponsor

    Omaha NE
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    Looks like a nice kit.

    What type of master cylinder and proportioning valve will you be using?
     
    Lockman likes this.
  11. Aug 25, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
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    Dec 4, 2018
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    I'm fortunate to have the GM Hydroboost Power steering system in there now. The ' Proportioning valve is new, but I bought it for Drum / Drum . I may have to replace it with Disc /Drum..... Oh well.
    Thanks for the heads up on that spindle/ bearing difference. This is what they say in their ad : " Your stock front drum brake spindles work with this DISC BRAKE KIT." I'll double check with them to make sure on Monday morning.
    Richie
     
  12. Aug 25, 2019
    Jw60

    Jw60 Recovering Jeepaholic

    Sedalia MO.
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    The bolts they include... I thought those are for a d25 /27 and look short. You should have studs on a d30 and they might need to be swapped for longer studs.
     
  13. Aug 25, 2019
    dane71

    dane71 Member 2019 Sponsor

    USA
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    I got the same kit on my '74! I haven't hit the road with it yet but it should do! One thing to note is that you wont be able to get the c clip back on the stub shaft. The instructions they include say it's okay, but I was thinking that the factory put those in the design for a reason. I used narrower inner bearing races (post #36 of Focker's link in this thread) and had a friend machine a little bit (.020" or maybe 0.030"?) off the face of my hubs where the locking hub bolts to. Doing those 2 things allowed me to put the clip back on with about as much play as factory. It's your call but I wanted to mention the option.
     
    Lockman and Focker like this.
  14. Aug 25, 2019
    Rich M.

    Rich M. Shoe pusher

    Maryland
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    Mar 23, 2008
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    603
    Disc brake 30's from 79-86 are not hard to find. I went through rockauto and couldn't get over $250 to renew everything if you had the caliper brackets.
     
  15. Aug 25, 2019
    cj6/442

    cj6/442 Sponsor Sponsor

    Fallbrook, Calif
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    I still use frame mounted pedals and went with a ford master out of a 78 ford f150/bronco .. ports are on the correct side 1 " bore ….still not happy with them my 11" drums stopped better .wilwood told me no 2 # residual valve is needed. just a 10 # for the rear drums
     
    Lockman likes this.
  16. Sep 1, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
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    Dec 4, 2018
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    Update : No wonder she wouldn't always hold brake pedal. Sometimes it's the little things.......
    No wonder she wouldn’t hold pedal.JPG
     
  17. Sep 2, 2019
    Lockman

    Lockman My " Rosie" Sponsor 2019 Sponsor

    White City, NY 14617
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    So...... Very pleased with the Kit I purchased from Horsepower Sales, LLC out of Kenosha Wisconson . Everything is engineered perfectly.
    From Start to Here about 1 Hour.JPG
    Zero Grinding needed , as Promised.......
    Zero Grinding Anywhere.JPG
    Waiting on a correct piston rebuild kit for my GM hydroboost Master Cylinder. The right one is VERY difficult to locate...... Here's hoping .:waiting:
     
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