Disc brakes on the stock axle and hubs


The "Hot Rod" version of the K and KB truck

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Golden Jubilee
Golden Jubilee

Posts: 630

Joined: Fri Nov 30, 2012 10:04 pm

Post Tue Jan 15, 2013 6:11 pm

Disc brakes on the stock axle and hubs

I have a setup for disc brakes on KB-1 and KB-2 stock hubs and axle. In my photo gallery is a pic of my disc brakes on my 48 KB-2.
Here is a copy of my thread from OLDIHC, it tells a bit more in detail how I did it.

I found a fairly simple way to put disc brakes on a KB-2 stock front axle. I got almost all the parts from Speedway Motors. I used a set of Wilwood rotor hats and 11.75" rotors that bolt together. I pressed the studs out of the hub and removed the drums. then I installed longer studs from NAPA. The rotor hat then slides right on to the hub. I used the 1.41" offset hats to clear the kingpin boss. The rotors bolt on to the hats with 8 bolts. I used Speedway's laser cut GM metric caliper brackets, with a little trimming and an extra tab welded od they bolt to the outboard side of the spindle ears. I got metric calipers for an 85 Monte Carlo and pads at the local parts store. The braided stainless 19" brake hoses with a 90 on one end. The rotors are held on by the wheels like a front wheel drive car. Be sure to use a 2lb residual valve in the line between the master cylinder and the front brakes to keep a slight pressure on the calipers. It helps keep the fluid from draining back to the master cylinder. What a difference stopping. WOW!
F.Y.I. here are the part numbers from Speedway.
rotor hats - 835-1700764
rotors GM .81"x11.75" - 910-31906
rotor/hat bolts - 835-2300233
19" brake line - 910-31892-3
3/8"-24 fem. to AN-3 fitting for frame - 617-4129
metic banjo bolt kit - 617-2950
metric caliper braket, flat - 916-41009
caliper slide bolts - 835-2300542

No I'm not a sales man for them, their parts work well. I put the brakes on for around $350.00. The exspensive part was the hats at 145.90 a pair, but those are what made it easy. The hats have 3 bolt patterns for 4.5", 4.75" and 5" on 5. I thought this might help someone trying to do this.
Bill
Image
Image
Image
This Photo shows what I cut off and the extra tab welded on.
Last edited by Wildmanbill on Tue Jan 15, 2013 6:26 pm, edited 1 time in total.
KB owner since 1972 and still loving it.
Retired Lineman, mechanic, fabricator, retired motorcycle racer.
South Amherst, Ohio
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Golden Jubilee
Golden Jubilee

Posts: 630

Joined: Fri Nov 30, 2012 10:04 pm

Post Tue Jan 15, 2013 6:13 pm

Re: Disc brakes on the stock axle and hubs

Here is an old post I did and found it save on Binder Planet. I will do a more detailed one later with photos. I also have a template to modify the bracket with, available free of charge.
Bill
KB owner since 1972 and still loving it.
Retired Lineman, mechanic, fabricator, retired motorcycle racer.
South Amherst, Ohio

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Site Admin

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Location: Nampa, Idaho

Post Tue Jan 15, 2013 7:09 pm

Re: Disc brakes on the stock axle and hubs

Thanks Bill, Once you get it all together, I will see if we can't get it onto the "main" side also.
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Golden Jubilee
Golden Jubilee

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Joined: Thu Nov 29, 2012 9:18 am

Location: Parker, Texas

Post Wed Jan 16, 2013 1:09 pm

Re: Disc brakes on the stock axle and hubs

thanks wildmanbill. the template would be nice.
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Golden Jubilee
Golden Jubilee

Posts: 307

Joined: Mon Dec 03, 2012 11:07 pm

Location: Camrose Alberta

Post Fri Feb 15, 2013 12:39 am

Re: Disc brakes on the stock axle and hubs

kjhogue wrote:thanks wildmanbill. the template would be nice.

Did you get the template ?
Vehicles;
1953 R130
3 X 1952-'54 Austin A40 Somsersets
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Golden Jubilee
Golden Jubilee

Posts: 991

Joined: Thu Nov 29, 2012 9:18 am

Location: Parker, Texas

Post Fri Feb 15, 2013 1:13 pm

Re: Disc brakes on the stock axle and hubs

hi Wildmanbill --- no. where did you send it?
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Golden Jubilee
Golden Jubilee

Posts: 630

Joined: Fri Nov 30, 2012 10:04 pm

Post Fri Feb 15, 2013 7:27 pm

Re: Disc brakes on the stock axle and hubs

To get a template, PM me your snail-mail address and I will send you one.
Bill
KB owner since 1972 and still loving it.
Retired Lineman, mechanic, fabricator, retired motorcycle racer.
South Amherst, Ohio
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Golden Jubilee
Golden Jubilee

Posts: 991

Joined: Thu Nov 29, 2012 9:18 am

Location: Parker, Texas

Post Tue Feb 19, 2013 1:04 pm

Re: Disc brakes on the stock axle and hubs

will do. thanks.
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Golden Jubilee
Golden Jubilee

Posts: 630

Joined: Fri Nov 30, 2012 10:04 pm

Post Tue Feb 19, 2013 5:48 pm

Re: Disc brakes on the stock axle and hubs

I will mail it out tomorrow, it's in the envelope.
Bill
KB owner since 1972 and still loving it.
Retired Lineman, mechanic, fabricator, retired motorcycle racer.
South Amherst, Ohio
User avatar

Golden Jubilee
Golden Jubilee

Posts: 991

Joined: Thu Nov 29, 2012 9:18 am

Location: Parker, Texas

Post Wed Feb 20, 2013 1:10 pm

Re: Disc brakes on the stock axle and hubs

thanks wildmanbill. it is greatly appreciated.
I am getting ready to part out my 60 falcon so i can consentrate on the kb1. sometimes you just need to reduce your inventory.
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