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Re: A-body disc brake help
[Re: mopower440]
#1073257
09/11/11 07:13 PM
09/11/11 07:13 PM
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Joined: Nov 2005
Posts: 15,118
85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
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No you only change the a arms with 9" drums or the newer 73-76 big bolt disc. Dr.Diff also makes sleeve so you don't need to change the arms with the 73-76 spindles.
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: A-body disc brake help
[Re: mopower440]
#1073258
09/11/11 07:23 PM
09/11/11 07:23 PM
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Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
I have a 1972 dart with 440. it still has the 10" drums all the way around. i want disc up front and possibly keep the small bolt pattern. I have the old kelsey hayes setup for it but i think you have to change one of the a-arms and ball joint or something? Does anyone make discs that will bolt right onto the drum spindle without changing anything?
The KH stuff should bolt right up to the upper arm, no adapters required. Hopefully, the lower BJ is in place on the KH spindle, if so you are good to go.
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Re: A-body disc brake help
[Re: mopower440]
#1073260
09/11/11 08:32 PM
09/11/11 08:32 PM
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Joined: Nov 2005
Posts: 15,118
85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
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Disc brake lower ball joints ar different than the drum. So if the disc ball joints are good you are good to go.
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: A-body disc brake help
[Re: mopower440]
#1073262
09/11/11 09:19 PM
09/11/11 09:19 PM
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Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
but the KH balljoint will fit in my drum a arms?
Yes...
The uppers are no different assuming you have 67-72 UCA's on the car. Same part number for the upper ball joint.
The lower BJ is different drum vs. disc, but, will bolt up to the same lower control arm. The Disc and drum LBJ's do not interchange between spindles.
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Re: A-body disc brake help
[Re: mopower440]
#1073263
09/11/11 09:22 PM
09/11/11 09:22 PM
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Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
hemi71x
master
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master
Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
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The ball joint "stud" that goes into the hole of the lower control arm is no different between a drum brake, or disc brake, lower ball joint.
The difference in ball joints is DRUM brake ball joins attach to the spindle with 1/2 inch diameter bolts.
DISC brake ball joints attach to the spindle with 9/16 inch bolts.
You can drill out drum brake ball joints to 9/16 without any problems.
That's all the factory did anyway, between the two ball joints.
RF-4C Phantom 69-370 Zweibrucken, Germany
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Re: A-body disc brake help
[Re: hemi71x]
#1073264
09/12/11 09:21 AM
09/12/11 09:21 AM
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Joined: Feb 2005
Posts: 5,221
Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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There is a company that sells a kit where you can run all the stock components, They have it for the 9" & 10" drums, There is some work involved but not much, Its basically a bracket that bolts to the factory spindle assembly, Then you buy like a celebrity rotor & caliper, I can't think of the companies name off hand, but i want to say "thunderbird" or something like that, i'm sure someone would know.
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Re: A-body disc brake help
[Re: joedust451]
#1073265
09/12/11 10:05 AM
09/12/11 10:05 AM
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Joined: Jan 2003
Posts: 75,008
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,008
U.S.S.A.
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Quote:
There is a company that sells a kit where you can run all the stock components, They have it for the 9" & 10" drums, There is some work involved but not much, Its basically a bracket that bolts to the factory spindle assembly, Then you buy like a celebrity rotor & caliper, I can't think of the companies name off hand, but i want to say "thunderbird" or something like that, i'm sure someone would know.
It's scarebird and I still think you have to drill the rotor for the 4" BP ?????
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Re: A-body disc brake help
[Re: mopower440]
#1073269
09/12/11 04:03 PM
09/12/11 04:03 PM
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Joined: Jan 2003
Posts: 75,008
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,008
U.S.S.A.
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Quote:
cool! but what about the bottom?
The bottom is the taper fit , take off the nut and use a ball joint fork to pop it out ...
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Re: A-body disc brake help
[Re: JohnRR]
#1073270
09/12/11 04:11 PM
09/12/11 04:11 PM
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Joined: Feb 2005
Posts: 5,221
Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
Quote:
There is a company that sells a kit where you can run all the stock components, They have it for the 9" & 10" drums, There is some work involved but not much, Its basically a bracket that bolts to the factory spindle assembly, Then you buy like a celebrity rotor & caliper, I can't think of the companies name off hand, but i want to say "thunderbird" or something like that, i'm sure someone would know.
It's scarebird and I still think you have to drill the rotor for the 4" BP ?????
Thats it thanks, Still should an easy job & relatively cheap too from what i've heard, just drill for the 4" pattern.
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Re: A-body disc brake help
[Re: mopower440]
#1073272
09/12/11 05:04 PM
09/12/11 05:04 PM
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Joined: Jan 2003
Posts: 75,008
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,008
U.S.S.A.
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Quote:
doesnt sound hard then, just leave my uppers in place and change out the lowers that came on the disc spindles then right? dont even have to remove the uppers from my control arms?
No you do not have to remove the uppers from the control arms
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Re: A-body disc brake help
[Re: mopower440]
#1073274
09/12/11 06:41 PM
09/12/11 06:41 PM
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Joined: May 2005
Posts: 86
Knights Ferry, CA
XDMN
member
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member
Joined: May 2005
Posts: 86
Knights Ferry, CA
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Just put the jackstands on the K member or frame, remove the nut on the lower BJ, pull the tie rod off. whack on the BJ with a BFH and the torsion bar will help pop it off when you whack it right. It will only drop down about 4 to 6 inches at most. Then you should be able to turn the drum away from you, undo the upper BJ nut and again with the BFH, give it a few whacks and it'll drop when you get it right.
put a jack under the lower contol arm and jack it until you can get the new spindle on for the disks.
Bill Adams
69 RR convert Petty Blue
68 Dart post
55 DeSoto Fireflite Sportsman
60 New Yorker
62 300H
65 300L
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