UPDATED PICTURES!! Disc brake Conversion AMC20HD - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

Reply
 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 01-08-2002, 03:08 PM Thread Starter
Keyboard Implanted
 
TOM85CJ7's Avatar
 
Join Date: Sep 1999
Location: Austin, Texas
Posts: 2,072
Thanks: 0
Thanked 0 Times in 0 Posts
 
UPDATED PICTURES!! Disc brake Conversion AMC20HD

I am in the middle of my Disc Brake Conversion. What year Cadillac calipers do I need? I have a set of '85 Caddy calipers, but there is no way they will fit over the '79 Waggy rotors. Am I missing something here? Do I have the wrong calipers? I would be surprised if any of the Caddy's used rotors as thick as a Waggy. Help Me out. I am going to do a write-up with pics once I have completed the setup. It looks like it will be right around $100 worth of parts to complete the conversion.

Thanks,
Tom


4WheelDriveWeb
TOM85CJ7 is offline  
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 01-08-2002, 03:36 PM Thread Starter
Keyboard Implanted
 
TOM85CJ7's Avatar
 
Join Date: Sep 1999
Location: Austin, Texas
Posts: 2,072
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: ElDorado Caliper??? What year?

Skip at TSM says 79-85 Cadillac ElDorado. I looked up the part on Advance Auto Parts website and the caliper I have matches the picture. It just doesn't look possible for the rotor to fit. I will take a pic and post it.

Later,


4WheelDriveWeb
TOM85CJ7 is offline  
post #3 of (permalink) Old 01-08-2002, 03:50 PM
Keyboard Implanted
 
jamgood96's Avatar
 
Join Date: Jun 2000
Location: Tualatin, Oregon, United States of America, North America, Earth, Milkyway Galaxy, Universe...
Posts: 3,932
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: ElDorado Caliper??? What year?

The only problem with the Caddy caliper is the $$$!!!! It's harder than snot to find a core caliper in a junk yard, and the auto shops want like $150 a piece without the core. It's OUTRAGEOUS!!!

jamgood96 is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 01-08-2002, 04:23 PM
Nickmil
Guest
 
Posts: n/a
Re: ElDorado Caliper??? What year?

The caddy calipers won't work with the '79 Wagoneer rotors. Problem is the rotors are 1 1/8" thick and the cad calipers were designed to work with 7/8" thick rotors. You will have to find a 6 lug rotor with the right offset, center hole diameter, thickness, lug stud hole diameter, overall diameter, etc. I haven't been able to find a park brake caliper from a stock application that will work with 1 1/8" thick rotors that will fit the right diameter and the GM/Jeep style of caliper mount. Let us know if you do. About the only thing I can see to do other than finding different rotors would be to grind 1/8" off of each pad. I would think real careful before I did that. Good luck. Nickmil.

post #5 of (permalink) Old 01-08-2002, 04:26 PM Thread Starter
Keyboard Implanted
 
TOM85CJ7's Avatar
 
Join Date: Sep 1999
Location: Austin, Texas
Posts: 2,072
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: ElDorado Caliper??? What year?

TSM says they use Chevy Truck calipers drilled to 6x5.5. They must be using 1/2 ton 2WD calipers. Does anyone know if these are 7/8"thick?

Thanks,
Tom


4WheelDriveWeb
TOM85CJ7 is offline  
post #6 of (permalink) Old 01-08-2002, 05:35 PM
MNT
Addict
 
Join Date: Sep 1999
Location: Northern Cal.
Posts: 514
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: ElDorado Caliper??? What year?

I used 72 eldo calipers. I even paid a little extra for the e-brake set up, and I think I have a way to make it work. The '72s fit perfect on my 86 waggie calipers.

g'luck

[img]/wwwthreads_images/icons/laugh.gif[/img] mnt [img]/wwwthreads_images/icons/laugh.gif[/img]
MNT is offline  
post #7 of (permalink) Old 01-08-2002, 06:29 PM Thread Starter
Keyboard Implanted
 
TOM85CJ7's Avatar
 
Join Date: Sep 1999
Location: Austin, Texas
Posts: 2,072
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: ElDorado Caliper? What year? Which Rotor?

I am thinking that the front rotor from a '72 Chevy 1/2 ton truck may work. They are 2wd 6 lug and maybe only 7/8" thick. I have a friend who has one and he is getting me a measurement. I hope this works. I really don't want to modify a rotor to make it work.

Later,


4WheelDriveWeb
TOM85CJ7 is offline  
post #8 of (permalink) Old 01-09-2002, 02:36 PM Thread Starter
Keyboard Implanted
 
TOM85CJ7's Avatar
 
Join Date: Sep 1999
Location: Austin, Texas
Posts: 2,072
Thanks: 0
Thanked 0 Times in 0 Posts
 
UPDATE!!!

Here is the latest. I have found that rotors from an '88 Chevy K1500 with regular cab will fit perfectly on the outside of the Waggy axle flange. These rotors have the same bolt pattern and the center hole fits perfectly on the center of the axle flange. These rotors will also work with the '79-85 Cadillac ElDorado calipers. The only problem I see is that the stud holes in the rotor are about 1/16-1/8" larger than the Waggy studs. I am not sure if this really matters. This would allow you to remove the rotor easily and would give you access to the bearing plate retainer bolts. It is possible to change the studs to a larger size and press them in, but then you have to drill a access hole in the rotor to get to the bearing retainer bolts. Does anyone see a problem with having the rotor loose on the studs?

Thanks,

PS I will post some pics on my website later.

4WheelDriveWeb
TOM85CJ7 is offline  
post #9 of (permalink) Old 01-09-2002, 10:05 PM Thread Starter
Keyboard Implanted
 
TOM85CJ7's Avatar
 
Join Date: Sep 1999
Location: Austin, Texas
Posts: 2,072
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: UPDATE!!!

Can anyone comment on the rotor issue?? I would like an opinion on whether or not 3/32-1/8" rotational play is really a factor. There will be even less opportunity for rotation with the rotor compressed between the wheel and the axle flange.

Thanks,


4WheelDriveWeb
TOM85CJ7 is offline  
post #10 of (permalink) Old 01-10-2002, 04:43 PM
 
Join Date: Dec 1999
Posts: 5,140
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: UPDATE!!!

youll have to address that amount of playI think, if it ever started moving it would wear quickly from tehre, Im not sure you could get enough clamping force to make the friction between the relatively smalle mating areas without breking or stretching the studs.

how much are these rotors?



OzarkJeep

too small to be seen, and too big to control, and treated like a walking bomb...
ozarkjeep is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome