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Re: Rear disc brakes - Cobra kit from Dr Diff [Re: ThermoQuad] #1441600 05/29/13 07:48 AM 05/29/13 07:48 AM
Joined: Nov 2003 Posts: 3,577 Long Island, NY USA B BergmanAutoCraft master
BergmanAutoCraft master B Joined: Nov 2003 Posts: 3,577 Long Island, NY USA	I've been using the 11.75 kit since 2006! Now with 14" fronts and viper gen threes, braking is fun. On the track I see others struggle to haul down from the straights....

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: BergmanAutoCraft] #1441601 05/29/13 06:48 PM 05/29/13 06:48 PM
Joined: Aug 2007 Posts: 294 Phoenix, AZ M MCTPhoenix enthusiast
MCTPhoenix enthusiast M Joined: Aug 2007 Posts: 294 Phoenix, AZ	I've got Cass' kits on two of my cars. I replaced a crappy setup that used older Caddy Eldorado calipers. Although the pad size seemed a little small they work well and I don't have a proportioning valve in the system. Feel, with power brakes was greatly improved with an A-body disc brake master versus the 2-bolt "truck" 1-1/8" bore master cylinder with plastic reservoir.

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: DoctorDiff] #1441602 05/31/13 04:22 PM 05/31/13 04:22 PM
Joined: Sep 2005 Posts: 6,516 Santa Cruz, California L Lefty OP master
Lefty OP master L Joined: Sep 2005 Posts: 6,516 Santa Cruz, California	Quote: I make 2 different versions. The 10.7" kit uses Toyota Cressida rear rotors. The 11.7" kit uses Mustang Cobra rear rotors. I recommend the 10.7" kit for 15" wheels and the 11.7" kit for 17" and larger wheels. FYI the 11.7" Cobra kit fit a 15" American Racing. Just barely... The wheels and tires are being replaced with much better rubber and custom offset wheels to stuff as much tire as possible underneath and still fit the stock wheel wells. I'm shooting for a 305/45 in the rear and 275/45 in front. We'll see...

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: Lefty] #1441603 06/01/13 08:46 PM 06/01/13 08:46 PM
Joined: May 2005 Posts: 39 Beeton Ontario. Canada B BigSugar member
BigSugar member B Joined: May 2005 Posts: 39 Beeton Ontario. Canada	Looks good ! Did you need to add a spacer,? I almost went with the 11.7" kit but the tolerance seemed a tad close, im running 15"torque thrust D rims as well. No complaints the 10.7's seem to work very well. Im running the Viper front setup as well. Manual with a 15/16 master. Works well. Great pedal. Ron

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: BigSugar] #1441604 06/01/13 09:18 PM 06/01/13 09:18 PM
Joined: Sep 2005 Posts: 6,516 Santa Cruz, California L Lefty OP master
Lefty OP master L Joined: Sep 2005 Posts: 6,516 Santa Cruz, California	Quote: I'm running the Viper front setup as well. Manual with a 15/16 master. Works well. Great pedal. That's how I build them too (manual - no booster, 15/16" MC piston). I like having the same pedal feel with the engine on or off and at any rpm.

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: Lefty] #1441605 10/23/13 09:01 PM 10/23/13 09:01 PM
Joined: Jun 2007 Posts: 2,432 NorCal RylisPro top fuel
RylisPro top fuel Joined: Jun 2007 Posts: 2,432 NorCal	Does anyone have tips on how to install the Dr Diff 11.75 brakes? I got my kit and am going to install it but I have never pulled the axles or swapped to rear dics before I am sure it is not rocket science and should not be too hard, just wondering on the torque specs on the bolts used, etc. I have seen instructions on other brands of rear brake kits but not Dr. Diff's http://www.tsmmfg.com/2160.html http://www.moparts.org/Tech/Archive/brake/8.html thanks 73 `Cuda Instagram: @rylispro YouTube: RylisPro www.rylispro.com 925-214-9192

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: RylisPro] #1441606 10/23/13 10:42 PM 10/23/13 10:42 PM
Joined: Nov 2008 Posts: 1,491 Lethbridge, AB, Canada dangina pro stock
dangina pro stock Joined: Nov 2008 Posts: 1,491 Lethbridge, AB, Canada	Quote: Does anyone have tips on how to install the Dr Diff 11.75 brakes? I got my kit and am going to install it but I have never pulled the axles or swapped to rear dics before I am sure it is not rocket science and should not be too hard, just wondering on the torque specs on the bolts used, etc. I have seen instructions on other brands of rear brake kits but not Dr. Diff's http://www.tsmmfg.com/2160.html http://www.moparts.org/Tech/Archive/brake/8.html thanks do you need tips on just installing the kit or do you need to know how to replace the timken bearings, wheel studs ect ect?

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: dangina] #1441607 10/23/13 11:30 PM 10/23/13 11:30 PM
Joined: Jun 2007 Posts: 2,432 NorCal RylisPro top fuel
RylisPro top fuel Joined: Jun 2007 Posts: 2,432 NorCal	Quote: do you need tips on just installing the kit or do you need to know how to replace the timken bearings, wheel studs ect ect? I need to know how to replace bearings, wheel studs, etc etc... Thanks 73 `Cuda Instagram: @rylispro YouTube: RylisPro www.rylispro.com 925-214-9192

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: RylisPro] #1441608 10/24/13 06:52 PM 10/24/13 06:52 PM
Joined: Dec 2012 Posts: 72 Good Ole USA D djw383 member
djw383 member D Joined: Dec 2012 Posts: 72 Good Ole USA	Dr Diff was awesome in helping me spec out what I needed and, most importantly, was there for follow up. I emailed him many times late at night with a question and he emailed me back within minutes which kept the project going that night. Knowledge and follow up made it worth it alone. Just my 2 cents.

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: RylisPro] #1441609 10/24/13 07:29 PM 10/24/13 07:29 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: Quote: do you need tips on just installing the kit or do you need to know how to replace the timken bearings, wheel studs ect ect? I need to know how to replace bearings, wheel studs, etc etc... Thanks You need an FSM. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: RylisPro] #1441610 10/25/13 02:41 AM 10/25/13 02:41 AM
Joined: Jan 2003 Posts: 8,016 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,016 Polson, MT	The rear disc brake kit installs like the original drum brake. Place the beaded steel gasket against the housing. Mount the caliper bracket on top of the steel gasket. Make sure the bracket faces inward and toward the rear of the car. Place the foam gasket against the outside of the caliper bracket. The axle slips through the caliper bracket and the 5 hole retainer bolts on top of the bracket. Adjust wheel bearing lash. The rotor slips over the axle flange. Position the caliper so the bleeder valve faces upward. Center the caliper frame over the rotor using 1-2 washers between the caliper frame and the aluminum caliper bracket. The slider caliper will seek it's own center. Run the flex hose down, then upward and secure it to the tab on the upper end of the aluminum caliper bracket. Route the parking brake cables under the axle housing. Contact info

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: DoctorDiff] #1441611 11/12/13 02:32 PM 11/12/13 02:32 PM
Joined: Mar 2010 Posts: 294 The Netherlands, OV D dickdale enthusiast
dickdale enthusiast D Joined: Mar 2010 Posts: 294 The Netherlands, OV	Why the Cobra style calipers? The "regular" mustang/thunderbird caliper are less rare...

Re: Rear disc brakes - Cobra kit from Dr Diff [Re: DoctorDiff] #1441612 08/16/14 01:31 AM 08/16/14 01:31 AM
Joined: Dec 2010 Posts: 12,375 SoCal MuuMuu101 I got lucky at Woodward!
MuuMuu101 I got lucky at Woodward! Joined: Dec 2010 Posts: 12,375 SoCal	I'm currently in the process of doing this swap and I got up to the point where the L-bracket, brake lines, and parking brake need to be installed. Any tips or help? I'm not sure where I'm supposed to bolt the L-bracket. Excuse the mess...

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