DoctorDiff's rear disc kit - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech DoctorDiff's rear disc kit

Print Thread

Page 1 of 3

1

2

3

DoctorDiff's rear disc kit #783678 08/25/10 02:52 AM 08/25/10 02:52 AM
Joined: Jan 2003 Posts: 31,274 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 31,274 Oregon	I shot a couple of pictures while I had the car up on jacks the other day. This is a really nice disc brake setup that Cass had engineered for the Mopar rear ends. This setup keeps the tapered roller bearings rather than forcing you to switch to the green bearings. It also uses an OEM quality caliper with weather seals and e-brake. Nice setup that is fairly compact and lighweight. 6157779-cass.jpg (987 downloads)

Re: DoctorDiff's rear disc kit [Re: AndyF] #783679 08/25/10 02:55 AM 08/25/10 02:55 AM
Joined: Jan 2003 Posts: 31,274 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 31,274 Oregon	Another view, this time without the rotor in the way. The aluminum bracket on this kit is a nice CNC machined part. 6157782-drdiff.jpg (1096 downloads)

Re: DoctorDiff's rear disc kit [Re: AndyF] #783680 08/25/10 07:19 AM 08/25/10 07:19 AM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	I run that kit on my dart! Only difference is I grinded off the ford logo! Mopar Performance

Re: DoctorDiff's rear disc kit [Re: AndyF] #783681 08/25/10 07:42 AM 08/25/10 07:42 AM
Joined: Jun 2005 Posts: 793 Utah topbrent super stock
topbrent super stock Joined: Jun 2005 Posts: 793 Utah	Which DrDiff rear disk kit is that? - The caliper brackets shown in your pics look like a 1 piece billet design. Just curious, as we just purchased the 10.7 rear disk kit from Cass, and it uses a powder coated 2 piece caliper bracket setup.

Re: DoctorDiff's rear disc kit [Re: AndyF] #783682 08/25/10 08:22 AM 08/25/10 08:22 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Andy what is that arm on the turnbuckle ... I dont know what I'm seeing

Re: DoctorDiff's rear disc kit [Re: MR_P_BODY] #783683 08/25/10 08:47 AM 08/25/10 08:47 AM
Joined: Apr 2010 Posts: 1,049 ohio A all spooled up super stock
all spooled up super stock A Joined: Apr 2010 Posts: 1,049 ohio	Quote: Andy what is that arm on the turnbuckle ... I dont know what I'm seeing sway bar link ??????????? Last edited by oneslowsbm; 08/25/10 08:48 AM.

Re: DoctorDiff's rear disc kit [Re: AndyF] #783684 08/25/10 08:53 AM 08/25/10 08:53 AM
Joined: Jan 2003 Posts: 1,263 Southwestern Ontario Canada racealittle pro stock
racealittle pro stock Joined: Jan 2003 Posts: 1,263 Southwestern Ontario Canada	Quote: I shot a couple of pictures while I had the car up on jacks the other day. This is a really nice disc brake setup that Cass had engineered for the Mopar rear ends. This setup keeps the tapered roller bearings rather than forcing you to switch to the green bearings. It also uses an OEM quality caliper with weather seals and e-brake. Nice setup that is fairly compact and lighweight. I studied the Fine Lines kit a friend bought that requires the green bearings. I don't see why they say green bearings are required. The Fine Lines kit won't work with factory rally rims, I hear that the kit Cass offers will. The Dr. Diff kit looks very nice in comparison, which may justify the price difference for some. Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen! Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!

Re: DoctorDiff's rear disc kit [Re: racealittle] #783685 08/25/10 09:27 AM 08/25/10 09:27 AM
Joined: Mar 2006 Posts: 5,067 Orlando Florida blown572dart master
blown572dart master Joined: Mar 2006 Posts: 5,067 Orlando Florida	Do they work on a rear with grean bearings?

Re: DoctorDiff's rear disc kit [Re: blown572dart] #783686 08/25/10 10:37 AM 08/25/10 10:37 AM
Joined: Jan 2003 Posts: 8,017 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,017 Polson, MT	My rear disc brake kits work with OEM adjustable A-7 bearings, 3.15" A-20 tapered bearings, MO-400 Green bearings, ST-400 Green bearings and RP-400 Green bearings. I have 3 versions with different rotor sizes: 13", 11.7" and 10.7". The most popular size is 10.7" (pictured) which fits most 15" wheels. Most 10.7" kits I sell come with a bolt-together steel caliper bracket because the high-offset aluminum version is cost prohibitive. The 11.7" and 13" versions come with billet aluminum caliper brackets because the offset is much shallower. Drilled/slotted/plated rotors are optional on all kits.

Re: DoctorDiff's rear disc kit [Re: MR_P_BODY] #783687 08/25/10 10:52 AM 08/25/10 10:52 AM
Joined: Jan 2003 Posts: 31,274 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 31,274 Oregon	Quote: Andy what is that arm on the turnbuckle ... I dont know what I'm seeing Adjustable rear anti-sway bar. This is a road race car, not a drag racer. DoctorDiff's rear disc kit now has been approved at 150 mph! 6158077-pits.jpg (380 downloads)

Re: DoctorDiff's rear disc kit [Re: DoctorDiff] #783688 08/25/10 11:15 AM 08/25/10 11:15 AM
Joined: Jan 2003 Posts: 6,988 Warren, MI J Jerry master
Jerry master J Joined: Jan 2003 Posts: 6,988 Warren, MI	Can you run the 13" kit under a 17" wheel or do you need 18s? Superior Design Concepts 2574 Elliott Dr Troy MI 48083 jerry@sdconcepts.com www.sdconcepts.com Facebook page: Superior Design Concepts www.bcrproducts.com

Re: DoctorDiff's rear disc kit [Re: Jerry] #783689 08/25/10 11:26 AM 08/25/10 11:26 AM
Joined: Jan 2003 Posts: 8,017 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,017 Polson, MT	Most 17" wheels will clear my 13" rear kit. This kit is usually paired with 14" or larger front rotors, which won't fit 17" wheels, however. Contact info

Re: DoctorDiff's rear disc kit [Re: DoctorDiff] #783690 08/25/10 11:32 AM 08/25/10 11:32 AM
Joined: Jan 2003 Posts: 9,146 Now - Port Orange,Fla. Former... MIKES_DUSTER master
MIKES_DUSTER master Joined: Jan 2003 Posts: 9,146 Now - Port Orange,Fla. Former...	Do you have a front disk brake kit and if so,whats the cost of it?? I still run drum brakes all around on my 72 duster.

Re: DoctorDiff's rear disc kit [Re: MIKES_DUSTER] #783691 08/27/10 01:30 PM 08/27/10 01:30 PM
Joined: Nov 2003 Posts: 3,040 GA roadrunninMark master
roadrunninMark master Joined: Nov 2003 Posts: 3,040 GA	Another for the doc diff rear kit. I had some questions as well and he was always happy to answer them. Here is a shot of mine installed: Mark 6162132-100_4740.JPG (484 downloads)

Re: DoctorDiff's rear disc kit [Re: MIKES_DUSTER] #783692 08/27/10 04:45 PM 08/27/10 04:45 PM
Joined: Jan 2003 Posts: 8,017 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,017 Polson, MT	I also make 11.7" and 13" rear kits as well as matching front disc brake kits with 11.75", 13" and 14.25" rotors. Contact info

Re: DoctorDiff's rear disc kit [Re: DoctorDiff] #783693 08/27/10 06:11 PM 08/27/10 06:11 PM
Joined: Mar 2007 Posts: 3,305 West Coast, USA jbc426 master
jbc426 master Joined: Mar 2007 Posts: 3,305 West Coast, USA	I love my Dr Diff disc brakes! The combination of parts he recommended on my '68 A-body give nearly perfect balance and modulation. They have saved my bacon a few times in critical finess braking situations. The price is right too! 6162611-753013-R1-044-20A_013(Large).jpg (594 downloads) 1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)

Re: DoctorDiff's rear disc kit [Re: DoctorDiff] #783694 08/27/10 07:43 PM 08/27/10 07:43 PM
Joined: Feb 2005 Posts: 5,207 Menomonee Falls DemonDust master
DemonDust master Joined: Feb 2005 Posts: 5,207 Menomonee Falls	These look great. Can I ask a dumb question??? Well I'm gonna...... If you don't have green bearings and they are required for a brake setup, what can happen? What do you gain? Lose? Thanks in advance SDG Motorsports Hellcat Demon and Redeye Supercharger CNC Porting https://www.sdgmotorsports.com/

Re: DoctorDiff's rear disc kit [Re: DemonDust] #783695 08/27/10 08:11 PM 08/27/10 08:11 PM
Joined: Aug 2009 Posts: 47 wv D dakster member
dakster member D Joined: Aug 2009 Posts: 47 wv	How much width do these rotors add to the rear end, how thick on the rotor hat?

Re: DoctorDiff's rear disc kit [Re: DemonDust] #783696 08/27/10 08:59 PM 08/27/10 08:59 PM
Joined: Jan 2003 Posts: 8,017 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,017 Polson, MT	You can use Green bearings or OEM, A7 tapered wheel bearings with any of my rear kits. Green bearings are not required. The rotors are .250" thick. This adds 0.125" per side to the original assembly width. Contact info

Re: DoctorDiff's rear disc kit [Re: AndyF] #783697 08/31/10 10:38 AM 08/31/10 10:38 AM
Joined: Jan 2005 Posts: 4,862 the frozen wastes... Pale_Roader Swears too much
Pale_Roader Swears too much Joined: Jan 2005 Posts: 4,862 the frozen wastes...	Quote: I shot a couple of pictures while I had the car up on jacks the other day. This is a really nice disc brake setup that Cass had engineered for the Mopar rear ends. This setup keeps the tapered roller bearings rather than forcing you to switch to the green bearings. It also uses an OEM quality caliper with weather seals and e-brake. Nice setup that is fairly compact and lighweight. So this pic is ov a road race car? What size are those rotors in the picture? Can i assume that the 11.7" rears will fit under stock 15" steel rims? 15x8" Ramcharger rims? How would a 3200lb E-body brake with 11.75/11.7" discs all 'round...??? I've been thinking about this idea for a long time for my 70 Challenger. Last time i checked (long ago) i thought it was AndyF making conversion brakes for Mopars, but now i see his car with Dr. Diff's brakes... Hmmm... Would the 11.7" rear set-up be lighter than a drum brake set-up?

Page 1 of 3

1

2

3

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1