Author Topic: Need help with rear disc brakes 70 cuda  (Read 4641 times)

Offline Cudakiller70

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Need help with rear disc brakes 70 cuda
« on: July 04, 2015 - 12:27:38 PM »
I have a 70 barracuda with Ford (I know to some it sounds like a disease) rear disc brakes. The drivers side caliper is dragging and it overheated the axle end bearing, now their is grease everywhere. The parts used are Ford, the bracket welded to the rear end housing, caliper mount and caliper, No markings on the rotor, but a number210286-C, the rotor is 10-5/8" OD. Per google the caliper is from a 87 Lincoln mark VII. Trying to get as much info as I can before I start rebuilding.
Does anyone know of a rear caliper brake kit that uses Ford parts?
I will need to change the axle bearing and seals also, are the Green bearings the way to go?
Any info or suggestions is appreciated.
Thanks Jim
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Offline brads70

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Re: Need help with rear disc brakes 70 cuda
« Reply #1 on: July 04, 2015 - 12:45:46 PM »
Bronco rear caliper perhaps? I've used Lincoln Versailles calipers on other cars before and you adjust the piston with those two holes in the piston. A simple flat bar with two screws tapped with locknuts will work. That might be a simple fix for your dragging brake issue?
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
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Offline 1 Wild R/T

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Re: Need help with rear disc brakes 70 cuda
« Reply #2 on: July 04, 2015 - 01:19:02 PM »
Looks to me like that install wasn't a kit, more of a fabrication... Nothing wrong with that as long as they got it working right & the front-rear balance is ok... It also looks like it works with OE style tapered bearings... If tapered bearings will work with the brake design I stay with the tapered bearings, they are much higher capacity bearings than the green bearings...

Those calipers were also used on SVO Mustangs...

Since the mk7 & SVO rear rotor is 11.3" those aren't Mk7 rotors, a good possibility could be the old Granada/Versailles rear rotors.. They are 10 5/8"   More dimensions here..  https://www.rockauto.com/catalog/moreinfo.php?pk=391069&cc=1189043&jnid=441&jpid=2

Oh, if you want to actually enjoy the ride & not feel like your driving a truck, get rid of those KYB gasajust shocks...   My preference is Bilstiens but there are other options.. But KYBs are terrible...  We all ran them 20+ years ago but there weren't many options back then... Things have changed..
« Last Edit: July 04, 2015 - 01:26:45 PM by 1 Wild R/T »
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Offline brads70

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Re: Need help with rear disc brakes 70 cuda
« Reply #3 on: July 04, 2015 - 01:28:46 PM »
I still have a pair of brand new Versailles rotors in the box . They have directional vanes. Left and right
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0

Offline Cudakiller70

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Re: Need help with rear disc brakes 70 cuda
« Reply #4 on: July 04, 2015 - 02:22:28 PM »
Bronco rear caliper perhaps? I've used Lincoln Versailles calipers on other cars before and you adjust the piston with those two holes in the piston. A simple flat bar with two screws tapped with locknuts will work. That might be a simple fix for your dragging brake issue?


 I did get hits on both, in a Lincoln forum their is talk of different series calipers some having parking brake issues which might be why this one was dragging. Thanks Jim
Auto spell I'm tired of your shirt
The above is just my opinion
Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other.
John Adams

Offline HP_Cuda

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Re: Need help with rear disc brakes 70 cuda
« Reply #5 on: July 04, 2015 - 02:30:57 PM »

I'd advise calling Cass at Dr. Diff and get a kit that will work right out of the box.

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Offline 1 Wild R/T

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Re: Need help with rear disc brakes 70 cuda
« Reply #6 on: July 04, 2015 - 02:45:50 PM »
I'd advise calling Cass at Dr. Diff and get a kit that will work right out of the box.

 :2thumbs:

People today buy everything as a kit, old school hotrodding has died...  :2cents: 
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
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Offline HP_Cuda

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Re: Need help with rear disc brakes 70 cuda
« Reply #7 on: July 04, 2015 - 02:48:50 PM »

Nothing wrong with fabrication as long as you make it work.

Why do you think most folks nowadays want to buy a throwaway car instead of rebuilding a classic?
1970 Cuda Clone 440 4 speed - sublime green
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Offline 1 Wild R/T

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Re: Need help with rear disc brakes 70 cuda
« Reply #8 on: July 04, 2015 - 02:56:14 PM »
Nothing wrong with fabrication as long as you make it work.

Why do you think most folks nowadays want to buy a throwaway car instead of rebuilding a classic?

Most people aren't hotrodders, thats fine.. Steering a hotrodder away from DIY to just buy a kit is lame IMO...  I've done this allot of years, swapped & modified allot of stuff... Mostly very successfully, some not so successfully... If I gave up the first time something didn't work I'd have given up hotrodding along time ago.. one off engineering & fabrication is probably one of my favorite parts of this hobby..
« Last Edit: July 04, 2015 - 05:00:22 PM by 1 Wild R/T »
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline HP_Cuda

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Re: Need help with rear disc brakes 70 cuda
« Reply #9 on: July 04, 2015 - 02:58:40 PM »

Wild - I don't know what your problem is but hey feel free to go over and help the guy out fabricate some ford calipers for his mopar!

The reason I said he would be better off is that using a Dr Diff kit is that brakes are somewhat necessary to get right and not screw around with.

Seems like you have plenty of time on your hands to go help him out -  :woo:


Most people aren't hotrodders, thats fine.. Steering a hotrodder away from DIY to just buy a kit is lame IMO...  I've done this allot of years, swapped & modified allot of stuff... Mostly very successfully, some not so successfully... If I gave up the first time something didn't work I'd have given up hoarding along time ago.. one off engineering & fabrication is probably one of my favorite parts of this hobby..
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD

Offline 1 Wild R/T

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Re: Need help with rear disc brakes 70 cuda
« Reply #10 on: July 04, 2015 - 04:30:02 PM »
Wild - I don't know what your problem is but hey feel free to go over and help the guy out fabricate some ford calipers for his mopar!

The reason I said he would be better off is that using a Dr Diff kit is that brakes are somewhat necessary to get right and not screw around with.

Seems like you have plenty of time on your hands to go help him out -  :woo:

Don't know if you've noticed but most of Dr Diff's kits are Ford based... He already has calipers & rotors mounted that have worked in the past.. I've gone to the trouble of attempting to help him determine what was used in the swap... You on the other hand tell him to buy a kit.... I have no problem. Apparently you do...

The reality is 70+ % of braking is done by the front wheels so discs in the rear aren't really needed they are mostly eye candy...  There are enough aftermarket "brake kits" that barely work and have very little engineering behind them... Not saying Cass' stuff doesn't work, plenty of guys are happy with it... But plenty of guys spend lots of $$ & in the end don't gain any increased performance...

Back in 1983 I built offset spring hangers for my Challenger, bolted a B body 8.75 axle under the car... Dr Diff now sells a kit to do the same... I could scrap my home made stuff & buy his kit but why would I?

I've got 2008 Mustang GT rotors & calipers on my 65 Falcon... Mustang Steve now sells a kit, Should I buy it? I've always swapped for better parts it's what hotrodders do... Kits are fine if you don't got the desire to try it yourself... But if you think Dr Diff or most of the other folks offering kits have some skill set that makes them better suited to designing brake upgrades than the average hotrodder I think you are to mistaken...

Spend your money & take your chances...
« Last Edit: July 04, 2015 - 05:11:22 PM by 1 Wild R/T »
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline Katfish

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Re: Need help with rear disc brakes 70 cuda
« Reply #11 on: July 04, 2015 - 05:57:16 PM »
I've often wondered why get discs on the rear.
As mentioned, fronts do all the work, but I guess they can look good.

Funny thing is if you get 11" discs on the back, the fluid flow has to be set to practically zero.
My 11" drums (finned) are over 13" in diameter and look good behind 18" rims.

Offline Chryco Psycho

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Re: Need help with rear disc brakes 70 cuda
« Reply #12 on: July 04, 2015 - 11:54:45 PM »
if you are running hard such as auto cross etc or running on a road course the rear drums will still overheat & fade , so disc are better , how many people actually track their cars , probably very few but those that do will see the benefits of rear disc

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Offline brads70

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Re: Need help with rear disc brakes 70 cuda
« Reply #13 on: July 05, 2015 - 08:18:16 AM »
if you are running hard such as auto cross etc or running on a road course the rear drums will still overheat & fade , so disc are better , how many people actually track their cars , probably very few but those that do will see the benefits of rear disc

 :iagree:   also usually disc's weight less than drums  so there is a slight performance advantage.
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0

Offline HP_Cuda

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Re: Need help with rear disc brakes 70 cuda
« Reply #14 on: July 05, 2015 - 02:05:30 PM »

Wow what a sideways direction we are headed here:

"Don't know if you've noticed but most of Dr Diff's kits are Ford based" - if you mean they both use 5 x 4.5 lug pattern wow you guess right! Btw, I have an email into Cass asking about his calipers - they certainly don't look Ford to me as I have 2 right now.

"The reality is 70+ % of braking is done by the front wheels " - this is just too obvious to even bother with besides your argument is with the OP putting rear discs on not with me.

Let me make this plain, folks that fabricate usually do not come onto a forum and ask to get bailed out of trouble, why? Because they make it work, otherwise a kit which is proven gets the job done. Hopefully that is clear enough even for you.

I'm done with you...


Don't know if you've noticed but most of Dr Diff's kits are Ford based... He already has calipers & rotors mounted that have worked in the past.. I've gone to the trouble of attempting to help him determine what was used in the swap... You on the other hand tell him to buy a kit.... I have no problem. Apparently you do...

The reality is 70+ % of braking is done by the front wheels so discs in the rear aren't really needed they are mostly eye candy...  There are enough aftermarket "brake kits" that barely work and have very little engineering behind them... Not saying Cass' stuff doesn't work, plenty of guys are happy with it... But plenty of guys spend lots of $$ & in the end don't gain any increased performance...

Back in 1983 I built offset spring hangers for my Challenger, bolted a B body 8.75 axle under the car... Dr Diff now sells a kit to do the same... I could scrap my home made stuff & buy his kit but why would I?

I've got 2008 Mustang GT rotors & calipers on my 65 Falcon... Mustang Steve now sells a kit, Should I buy it? I've always swapped for better parts it's what hotrodders do... Kits are fine if you don't got the desire to try it yourself... But if you think Dr Diff or most of the other folks offering kits have some skill set that makes them better suited to designing brake upgrades than the average hotrodder I think you are to mistaken...

Spend your money & take your chances...
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD