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Re: Disc brake swap on 71 Duster... will these work?? [Re: RobX4406] #1216687 07/25/12 01:32 PM 07/25/12 01:32 PM
Joined: Jun 2006 Posts: 699 Cooperstown, NY jrlegacy23 mopar
jrlegacy23 mopar Joined: Jun 2006 Posts: 699 Cooperstown, NY	Quote: Bolt hole may be smaller on the early drum LBJ. If you are doing this, I'd buy fresh 73-76 A body lower ball joints. I believe you can ream the holes in your current lbj if bolt spacing is the same. 71 Control arm likely is a small stud ball joint. You need a sleeve or the large ball joint upper arm. You can use the lower control arms from your A-body, just not the ball joints. Stop down to your local parts store and grab the ball joints for a 73-76 A-Body. i did this swap on my 72 Dart. [color:"#00FF00"]68 Fastback Barracuda with some stuff[/color]

Re: Disc brake swap on 71 Duster... will these work?? [Re: jrlegacy23] #1216688 07/25/12 01:51 PM 07/25/12 01:51 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	Quote: Quote: Bolt hole may be smaller on the early drum LBJ. If you are doing this, I'd buy fresh 73-76 A body lower ball joints. I believe you can ream the holes in your current lbj if bolt spacing is the same. 71 Control arm likely is a small stud ball joint. You need a sleeve or the large ball joint upper arm. You can use the lower control arms from your A-body, just not the ball joints. Stop down to your local parts store and grab the ball joints for a 73-76 A-Body. i did this swap on my 72 Dart. Just to clarify the lower control on my 71 drum brake will work with my volare spindles? I just need to get 73 and up lower ball joints, which will bolt to my volare spindles? These lower ball joints also are compatible with my 71 control arms, in terms of diameter of ball joint studs? Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

Re: Disc brake swap on 71 Duster... will these work?? [Re: smokes] #1216689 07/25/12 01:58 PM 07/25/12 01:58 PM
Joined: Jun 2006 Posts: 699 Cooperstown, NY jrlegacy23 mopar
jrlegacy23 mopar Joined: Jun 2006 Posts: 699 Cooperstown, NY	Simply put.... yes. [color:"#00FF00"]68 Fastback Barracuda with some stuff[/color]

Re: Disc brake swap on 71 Duster... will these work?? [Re: DAYCLONA] #1216690 07/25/12 02:05 PM 07/25/12 02:05 PM
Joined: Jan 2003 Posts: 27,468 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,468 So Cal	Quote: Quote: FWIW a word of caution... The Volare/Aspen spindles are about 3/8" taller than the 73/76 A body spindles... I'd be curious how the FMJ spindles perform/align on the A bodies/(as I don't build A bodies)....I've used the FMJ spindles on B and E bodies for years with no major issues in regard to increased bumpsteer, or achieving caster alignment/specs, street/track or course cars regardless of the "drama' surounding their use, In fact I actually prefere their use on the 66-72 B/70-4 E platforms Mike Same results as you've got in the past. IIRC, I believe the red 68 Valiant of Tim Werner's that AndyF posts pictures of has FMJ spindles?? AndyF, confirm/deny?

Re: Disc brake swap on 71 Duster... will these work?? [Re: autoxcuda] #1216691 07/25/12 05:29 PM 07/25/12 05:29 PM
Joined: Jan 2003 Posts: 31,037 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,037 Oregon	Sure, I've been recommending the tall knuckles for years. They are lighter and you get a better camber curve with them. The trick is to use the upper control arms from www.firmfeel.com which have the tweaked ball joint angle. I'm working on a project now where the knuckle is even taller than the FMJ one. The guys at Firm Feel are building me custom upper arms to make it all work. I'll post some pictures once we get it all together.

Re: Disc brake swap on 71 Duster... will these work?? [Re: AndyF] #1216692 07/25/12 06:51 PM 07/25/12 06:51 PM
Joined: Jun 2006 Posts: 699 Cooperstown, NY jrlegacy23 mopar
jrlegacy23 mopar Joined: Jun 2006 Posts: 699 Cooperstown, NY	PM me if your interested. I have a set of magnum force tubular upper control arms I would be willing to sell or trade. I am changing to a tubular K-Frame and coilovers. The kit came with new ones. These are the ones I have, but mine are powder coated gray vein. http://www.magnumforce.com/store/image.aspx?src=2544%5Fblack%2Ejpg&Size=450

Re: Disc brake swap on 71 Duster... will these work?? [Re: jrlegacy23] #1216693 07/25/12 11:22 PM 07/25/12 11:22 PM
Joined: Feb 2009 Posts: 342 dracut mass usa S sparcy enthusiast
sparcy enthusiast S Joined: Feb 2009 Posts: 342 dracut mass usa	I own a set of magnum force adjustable upper control arms !!! cost me 450. plus powder coat they are red !!! I have, and only own B bdys I ordered b body they sent me a body and they wouldnt take them back !!!! so there red , brand new in the box !!! I will give u a good deal !!!PM ME!! you always want adjustable READ how to make your muscle car handle by mark savitske !!! I have ben down both roads IF U CAN GET IT ADJUSTABLE do it !!! IF YOU ARE NOT WRECKING STUFF YOU ARE NOT LEARNING !

Re: Disc brake swap on 71 Duster... will these work?? [Re: AndyF] #1216694 07/26/12 04:54 PM 07/26/12 04:54 PM
Joined: Jan 2009 Posts: 813 Ontario,Canada brads70 super stock
brads70 super stock Joined: Jan 2009 Posts: 813 Ontario,Canada	Quote: Sure, I've been recommending the tall knuckles for years. They are lighter and you get a better camber curve with them. The trick is to use the upper control arms from www.firmfeel.com which have the tweaked ball joint angle. I'm working on a project now where the knuckle is even taller than the FMJ one. The guys at Firm Feel are building me custom upper arms to make it all work. I'll post some pictures once we get it all together. I agree , that's why I used the 73 C-Body spindle!

Re: Disc brake swap on 71 Duster... will these work?? [Re: brads70] #1216695 09/02/12 08:37 PM 09/02/12 08:37 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	New question about this swap. I was comparing my new 73-76 A body ball joints and after comparing them to the volare pieces I noticed a difference. The volare pieces are threaded where they bolt onto the volare spindle. The A body lower ball joints are not threaded. Do you guys just purchase bolts that can pass through both and capture with a nut and lock washer or is there something else I need to get?? Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

Re: Disc brake swap on 71 Duster... will these work?? [Re: smokes] #1216696 09/02/12 09:18 PM 09/02/12 09:18 PM
Joined: Jun 2006 Posts: 699 Cooperstown, NY jrlegacy23 mopar
jrlegacy23 mopar Joined: Jun 2006 Posts: 699 Cooperstown, NY	Quote: New question about this swap. I was comparing my new 73-76 A body ball joints and after comparing them to the volare pieces I noticed a difference. The volare pieces are threaded where they bolt onto the volare spindle. The A body lower ball joints are not threaded. Do you guys just purchase bolts that can pass through both and capture with a nut and lock washer or is there something else I need to get?? Exactly, Read this: http://www.bigblockdart.com/techpages/spindles.shtml [color:"#00FF00"]68 Fastback Barracuda with some stuff[/color]

Re: Disc brake swap on 71 Duster... will these work?? [Re: jrlegacy23] #1216697 09/02/12 09:30 PM 09/02/12 09:30 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	Thanks, after I posted this I did some more research including that page and answered my own question. Got a little ahead of my self in posting Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

Re: Disc brake swap on 71 Duster... will these work?? [Re: smokes] #1216698 09/02/12 10:22 PM 09/02/12 10:22 PM
Joined: Dec 2003 Posts: 22,696 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,696 Bitopia	Quote: Got a little ahead of my self in posting Well that means you fit in here very well. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Disc brake swap on 71 Duster... will these work?? [Re: jcc] #1216699 02/04/13 08:24 PM 02/04/13 08:24 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	So I took the car on a quick drive around the block and found that the brakes are super soft and barely stop the car ( thankfully I have a working e-brake The brake pedal feel is not very good and I made sure to bleed the system twice and there are no more bubbles. I did purchase a new master cylinder for a 73+ A body with manual disc brakes (I did bench bleed the master)and also got a proportioning valve that is a stock replacement for the 73+ which when compared side by side with the old disc one is probably 20% bigger. Since the pedal is soft I was thinking that maybe I need to get an adjustable brake pedal push rod (from mopar performance) ? I was thinking this might be the only thing in the system to cause the pedal to be really soft?? I double checked and found no leaks in my brake system so I am kinda stumped... I did check the initial depth of the pistons in the back of the 2 masters and they look like there might be a difference of 1 mm at the most ( the new one is slightly deeper)... You guys have any thoughts? Last edited by smokes; 02/04/13 10:04 PM. Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

Re: Disc brake swap on 71 Duster... will these work?? [Re: smokes] #1216700 02/05/13 01:10 PM 02/05/13 01:10 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	Anyone have any thoughts?? Help... Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

Re: Disc brake swap on 71 Duster... will these work?? [Re: smokes] #1216701 02/06/13 12:17 PM 02/06/13 12:17 PM
Joined: May 2005 Posts: 416 Franklin Co. Illinois runinonmt mopar
runinonmt mopar Joined: May 2005 Posts: 416 Franklin Co. Illinois	Unless you have an out of the norm glitch the most likely source of a soft pedal is air in the system,second a leaky (between the seals) master cykinder. The length of the push rod won't make a difference in the feel. Are the bleeders on the calipers at the top? If not you need get them there. Did you bleed it using a hand vacuum pump? Sometimes that won't get the job done and you have to get a helper to do it manually. I've only had this happen once. This all assumes you don't have a leak and the master cylinder is full. Ron In sixty-five I was seventeen and running up one-o-one I don't know where I'm running now, I'm just running on Jackson Browne-Running On Empty

Re: Disc brake swap on 71 Duster... will these work?? [Re: runinonmt] #1216702 02/06/13 01:07 PM 02/06/13 01:07 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	I will double check the air in the lines. I know I bled the system twice but I remember after I got done checking everything that the screw on the bottom of the proportioning valve was just a hair loose and I tightened it up. That could be causing the leak and the soft brake pedal... I will be bleeding the system tonight to double check. Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

Re: Disc brake swap on 71 Duster... will these work?? [Re: smokes] #1216703 02/06/13 04:43 PM 02/06/13 04:43 PM
Joined: Jun 2006 Posts: 699 Cooperstown, NY jrlegacy23 mopar
jrlegacy23 mopar Joined: Jun 2006 Posts: 699 Cooperstown, NY	Quote: I will double check the air in the lines. I know I bled the system twice but I remember after I got done checking everything that the screw on the bottom of the proportioning valve was just a hair loose and I tightened it up. That could be causing the leak and the soft brake pedal... I will be bleeding the system tonight to double check. When you bleed the brakes, start with the furthest wheel from the master cylinder, otherwise you will be leaving air in the system. [color:"#00FF00"]68 Fastback Barracuda with some stuff[/color]

Re: Disc brake swap on 71 Duster... will these work?? [Re: jrlegacy23] #1216704 02/06/13 09:08 PM 02/06/13 09:08 PM
Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat... S smokes OP mopar
smokes OP mopar S Joined: Jan 2006 Posts: 572 Portland , Oregon, United Stat...	Good call. I will make note of that. Looking for a clean w150 or w200 72-80 body style In the Pacific Northwest

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