1979-1993 Mustang SVE 4-Lug Rear Disc Brake Conversion - Review & Install

[@davidfrank2824]

I know this is 5 years old but I do have a tip to share with all fox bodies owner. If you have a five-speed with most of us all do and when you take off and you hear a little clink when you are starting off and cannot figure out where it's coming from this tip is for you. That noise that I was hearing had me worried that either something's loose in the rear end or my transmission. Every weekend from spring until fall I would be at the drag strip with racing slicks and would race all day. So I had a good reason to worry. I finally had enough of it and put my car on jack stands and rims and had my father get in my car and start and work gear. It was definitely coming from the rear and for some reason I decided to tighten the bolts at the end of the drive shaft that attached to the rear. I used a 12 mil 12 point wrench and yes got a little bit of movement from each bolt. I thought to myself this can't be it. Sure enough when my father put the car into first gear and no more noise. I had stopped by to have lunch with a friend of mine who was a Ford mechanic. He was the senior mechanic at the dealership as we were walking out one of the mechanics stopped us and was demonstrating the noise that I was feeling with. My friend told the mechanic to change to you joints and I said you don't need to do that get a 12 mil 12 point wrench he looked at my friend he told him get him what he asked for he knows these cars better than myself. So I told them with just enough movement to tighten them up. They both were skeptical until he got into the car and the noise was gone. At that time mechanics at dealerships got paid for work and there was very little money to be made by tightening bolts and doing nothing else. Since it was a warranty work they went ahead and change the u-joints anyhow. 2 months after that Ford finally came out with a service bulletin identifying where noise was coming from. What Ford wanted mechanics to do were to replace all four bolts holding the drive shaft in. The new bolts came with loctite already on the bolts. My friend was actually able to grab a box of the bolts for me. Even after all these years 30 plus years I still have those bolt in my garage on my part shelf.

[@tflkwiz594]

This kit is exactly what i have been looking for, too bad it's never in stock.

[@damianmartinez6188]

Very good video, well explained. Good job guys!

[@dntlss]

Really good video but please go a little slower next time,sounds like its going 500 miles a hour!!

[@bradcheatham5043]

Play it back at .75 speed. It's very helpful!

[@josecarrasco9392]

I can't seem to find the rear disc conversion kit

[@BRENDAJASON1]

Damm that oil in that rearend look like mud. That's a lot of work

[@dntlss]

I was gonna say that, lol ,till i saw your comment, looks like waters been back there!!

[@BRENDAJASON1]

dntlss that's right lol

[@frogman7874]

Awsome kit!

[@mosesandres3385]

I know this is an older video and the kit is different now but with this original kit what year did this rear caliper come from? Im in need of the pads and rotors. Had to replace one caliper so i figure i will service the brakes and rotors. I appreciate the info.

[@latemodelrestoration]

'93 Cobra rear pads will work with the calipers that were in the older 4-lug rear disc kits. We have a few different options. Link below. -Landan lmr.com/products/Fox-Body-Mustang-Brake-Pads-Shoes

[@mosesandres3385]

@@latemodelrestoration what about the rotor? Is it a 10ich rotor? Thanks for the pad link.

[@latemodelrestoration]

@@mosesandres3385 A '93 Cobra rear rotor will also work. -Landan lmr.com/products/79-93-Mustang-Brake-Rotors-And-Drums

[@mosesandres3385]

@latemodelrestoration thank you for the speedy response Landan

[@DarkFoxx88]

I was reading on bleeding brakes with an adjustable proportioning valve and everyone’s saying the valve should be fully open when bleeding brakes?

[@latemodelrestoration]

That's exactly what we mention in the video at 11:26. Thanks. -Landan

[@DarkFoxx88]

I guess I misunderstood. In the video you said turn clockwise which I thought was closed. Then said after bleeding adjust the knob in the middle

[@latemodelrestoration]

@@DarkFoxx88 A brake proportioning valve doesn't work the way you're thinking. When you rotate clockwise, you're allowing maximum braking pressure. When you rotate counter-clockwise you're reducing the maximum pressure by roughly 57% (this varies with each proportioning valve). The best reference I can give you is that an adjustable brake proportioning valve is not like a hose spigot. You're not "closing" or "opening" the valve. As with anything mechanical, there is a detailed engineered explanation as to how an adjustable brake proportioning valve works and that's too long for a YT comment. Lol! Hope this helps. -Landan

[@bduff007]

These ever going to be in stock?

[@9Apilot]

can the 4 lug axles be swapped out for 5 lugs later?

[@drdeath223]

So they couldn't supply a new rubber washer?

[@contigoagenciademarketing4876]

hola! podria decirme cual es el diametro del cilindro o piston del caliper que se utilizo en esta conversion?

[@SimanSlivar]

IM going for the brake pads I cant get them to install at all even on the bench

[@fords4life914]

That's neat

[@justletmecomment6453]

my e-brake is now set way too tight. What should I do?

[@latemodelrestoration]

Reference this video: kzbin.info/www/bejne/qKe1pKuYi96Emqc From 9:02 to 11:45 I discuss the parking brake modification. -Landan

[@ROYCE415]

Bought my 89 Notch with these installed already, do you guys sell the brake pads?

[@latemodelrestoration]

Here is the link: lmr.com/item/LRS-2001E/1993-Mustang-Cobra-Replacement-Rear-Brake-Pads These are the same pads we include in the kit. -Landan

[@ROYCE415]

Late Model Restoration thanks!

[@kickblake]

this kit appears to include standard 94-04 mustang rear calipers. it also includes a vented rotor. Were you to go to a parts store, you could tell them you have a '94-'04 cobra, '03-'04 mach 1, or an '01 bullit and get the correct pads. Odds are they'll STILL ask you if you have vented or solid/unvented rotors (despite the fact that the aforementioned list of cars are the only ones that have vented rotors from the factory), and you'll definitely want pads for vented rotors. The pads for unvented rotors are too thick to fit.

[@M-E-G-A]

ROYCE 415 wouldn't rear disks cause the car to spin-out if you had to slam the brakes in an emergency?

[@andinbriwel1092]

Carlos C. Only if you set that proportioning valve completely wrong. Many cars have rear disc brakes.

[@staceysims7270]

I noticed u didn’t install any parking brake cable brackets, are they needed or is this an option? On the five lug conversion video, it shows them installed 🤔

[@latemodelrestoration]

If you have the available brackets, the reuse and install them. - Jude H. - Social Media/Events Coordinator

[@staceysims7270]

Late Model Restoration I’ve done the drum to disc conversion.and the car already had upgraded lower control arms ,so it didn’t have any brackets. I have access to some from an sn95, are they the same as on the 93 models? If so could those be used? ... thanks

[@latemodelrestoration]

The 94-04 brackets are different from 79-93 brackets. I'll link them for you below. Unfortunately, we're currently out of stock. You can sign up for in-stock alerts on the product page to be notified when they've been stocked and are ready to ship. - Jude H. - Social Media/Events Coordinator | lmr.com/item/LRS-92860/mustang-parking-brake-cable-bracket-79-93

[@IndianaJBird]

What is the radius of the axle center to the outside of the caliper. I need to know if the rims I am using will clear.

[@latemodelrestoration]

I do not have this specific measurement, but this particular setup will require the use of a 16" wheel or larger.

[@allpro_photo]

Will this ever be in stock???

[@latemodelrestoration]

Please reach out to our customer service team and they will be happy to set you up with email notification on this item. lmr.com/contact

[@robgambaro4585]

So I'm in the middle of this installation and I cannot get the brake pads installed with both anti-rattle clips. I got the outside pad in, but it's jammed and there is no friggin way it's going to be able to release or slide. What do I do???

[@captainuseless3806]

Had the same issue, I took a file to the pad

[@BSaunders145]

What size are the rotors? I think I got this kit. Do you guys sell the calipers rotors and pads.

[@latemodelrestoration]

We sell all of the components of this kit separately. The rear rotor in this kit is 10". -Landan

[@BSaunders145]

sweet I just order then, tx.

[@5PointSlow]

Will this kit work with strange C clip eliminators?

[@latemodelrestoration]

LMR does not recommend the use of the C-clip eliminators on any disc-brake swap Fox chassis.

[@mightydmusic2970]

can i use this kit on a 1959 tbird

[@302hobronco]

Do I need a vacuum brake booster to run this on my 79 merc capri rs turbo??

[@chriscal8201]

How much is the 87-93 kit cost

[@latemodelrestoration]

At the time of this comment, the price is $939.99. You can find the kits in the link below. -Landan lmr.com/products/79-93-Mustang-Brake-Kits

[@BRENDAJASON1]

What about the five lug ford ranger axles will they work with these in the mustang? Of course I know you all want to sell your products so prob won't address this

[@thatonegamer9547]

someone who wants setup without taking the axle assembly off would prefer this.

[@ExploreAnywhere]

This video is made for people who want to keep the old school 4lug but want rear disks. I've done a few axle swaps, any v8 or v6 axles from 1994-1999 and 2000-2004 work with the 1985-1993 mustangs. I've done it but I have a 93 that I wank to keep the 4lug so this product is appropriate for some

[@dev894]

do you know if they make a kit for 77?

[@latemodelrestoration]

Since we specialize in 1979-1993 Mustangs, so we wouldn't have an answer for that. Feel free to send us an email at [e-mail] if you have any other questions - Jude H. - Social Media/Events

[@360fanboy360]

nice

[@alexgarza2759]

I can use stock 90 brake booster

[@ExploreAnywhere]

I have a 93, with a 1990 rear axle

[@latemodelrestoration]

IF you have any specific questions, you can reach out to our tech team on our contact us page. lmr.com/contact

[@danielmonroy4429]

Will this kit fit a 7.5 rear end?

[@latemodelrestoration]

Daniel - This kit is designed for cars originally equipped with 8.8 rear ends. However, it can fit 7.5 rear ends with minor modifications. Instead of using the provided axle hard lines, you would need to cut and flare your factory lines to install them into the brake hoses. Other than that, everything installs according to the video.

[@danielmonroy4429]

@@latemodelrestoration nice very nice, thank you for the information

[@betthat313]

does it work with c clip eliminator ?

[@latemodelrestoration]

The included disc brake brackets will work with c-clip eliminators. However depending on the axle that is in the car, this kit may or may not work. -Landan

[@betthat313]

+Late Model Restoration the axles are moser 31 spline . also the car is a 79 but the rear end is out of a 91 GT .will that make a difference?

[@latemodelrestoration]

Long story short, we put a 31 spline carrier in this car while everything was apart. That being said, it has 31 spline Moser axles as well. Here is a link to the axles we used: lmr.com/item/MOS-7993-31/79-93-Mustang-31-Spline-4Lug-Moser-Rear-Axles You'll be able to use the axle hard lines as long as the center upper axle hose is on the driver side of the rear end housing. If not. you'll have to cut and flare the factory lines. -Landan

[@migueltamayo9159]

@+latemodelrestoration, ok I'm confused, when u gutt the proportining valve, do I removed all the internals? or do I just replace the rubber ring? I'm almost done with my disk conversion.

[@justletmecomment6453]

Miguel Tamayo you probably figured it out by now, but you pull the whole mechanism out of it.

[@williamaguiar14]

Do you have hrs for this job

[@latemodelrestoration]

It all depends on the tools that you have access to. If you have a lift, power tools and past experience/knowledge with this kind of install, it could take you 4-5 hours. If you don't have access to a lift, you could be looking at a full weekend to install it.

[@timsimons8946]

How much does this cost to install?

[@latemodelrestoration]

Hi Tim, It all depends on how much a shop would charge for labor. We would recommend calling a local trusted shop to get a quote for the installation.

[@shroomhauler]

What if I have c-clip eliminators?

[@latemodelrestoration]

The 4-lug rear disc conversions will not work with c-clip eliminators. -Landan

[@marcusfabiousmaximus3463]

How much would this cost if you payed to have this done?

[@latemodelrestoration]

This will depend on the shop of course but you could easily factor in 4-5 hours of labor for this kit.

[@dewrus2153]

I have a 1983 GT and have been wanting rear disks...too bad they decided not to include the hard lines for my application. Wonder why they are included for one application and not for mine? Any plans on including them in the future?

[@WildWilDavis]

You did watch the video rite?

[@dewrus2153]

WildWilDavis Yes I did. Why do you ask?

[@latemodelrestoration]

At this time, our axle hard lines are only available for 1987-1993 Fox Mustangs. -Landan

[@andinbriwel1092]

Dewy Russ they really aren't hard to do yourself if you buy or rent the flare tools. Rent bender, too.

[@John-jq3qd]

What if I did a 5 lug conversion already and now I want upgrade all 4 brakes? What kit do I buy ???

[@aasimovski]

John 27 i think the same kit just buy 5 lug rotors, unless they sell a 5 lug conversion specific kit

[@businessman953]

For that work lol I keep the original rear brakes.

[@latemodelrestoration]

I completely understand but if you change your mind, we are here for you. Have a Great Day.

[@captainuseless3806]

Damn lol its not THAT much work

[@BRENDAJASON1]

Prob need to start engine when you bleed brakes

[@kickblake]

No you don't.

[@robpeters5204]

Serious?!? You have to reuse the o ring from the proportioning valve? Too cheap to put a new one in the kit. Jeeez!