rear disc brake conversion????

[JetBlackBronco]

does anyone know if there is conversion kit available for a 91 bronco, to convert the wimpy rear drums over to disc brakes. i know the fords came with discs in 92 or 93, but it was a 4 wheel anti locks. i want to keep my from locking brakes, and i want my backs to work better and work properly in the rain/mud/under water.

[Barrin]

thats a good Idea...
Im with you Brother.....

[cjbronco]

Oh man, theres been some debates about this one. I personaly dont think there's a need for rear disc's, just a hydroboost system. However, to each his own. Look at ford racing homepage and ive seen a rear disc brake conv. kit for you 8.8 for about $350 or so. Good luck.

[greystreak92]

There is absolutely no comparison for the stopping power that disc brakes provide over drums. Its a fact that vehicles with front disc/rear drum brakes rely on the discs to provide better than 60% of the overall braking power for the entire braking system. Rear disc conversions increase rear axle sytopping power and if nothing else reduce the frequency with which the front pads must be replaced. With this in mind Check this page at The Streetrod Manufacturing Company

[JetBlackBronco]

those look great, but will they work with anti lock brakes?

and another question....how hard is it to remove the axles to install this kit?

[93BigBlackBronco]

[quote=JetBlackBronco]those look great, but will they work with anti lock brakes?

Does a disc brake conversion require an adjustable proportioning valve?, and if so will the ABS work correctly.
Keeping in mind that ABS sensor on the rear is on the differential carrier not the individual wheels like the front.

I have a disc brake conversion I will be installing when I regear. Just want a few answers to avoid headaches

[greystreak92]

Guys, guys, disc brake conversions work EVEN BETTER with ABS because you DON'T need an adjustable proportioning valve, the ABS computer reads the brake response and adjusts fluid flow to the rear brakes accordingly. Remember that the sensor for the rear portion of the ABS is the VSS in the top of the rear diff. housing. So, swapping to rear dics with ABS actually makes the swap a simpler project than if you had a standard barking system.

[body9599]

Originally Posted by greystreak92

Guys, guys, disc brake conversions work EVEN BETTER with ABS because you DON'T need an adjustable proportioning valve, the ABS computer reads the brake response and adjusts fluid flow to the rear brakes accordingly. Remember that the sensor for the rear portion of the ABS is the VSS in the top of the rear diff. housing. So, swapping to rear dics with ABS actually makes the swap a simpler project than if you had a standard barking system.

does this apply to those of us without VSS? 89's didn't have VSS right?

[aurgathor]

Originally Posted by greystreak92

There is absolutely no comparison for the stopping power that disc brakes provide over drums. Its a fact that vehicles with front disc/rear drum brakes rely on the discs to provide better than 60% of the overall braking power for the entire braking system. Rear disc conversions increase rear axle sytopping power and if nothing else reduce the frequency with which the front pads must be replaced.

Unless loaded, the Bronco is a front heavy vehicle, with around 60:40 or so split in weight/axle, so it should not come as a surprise that most of the braking is done by the front brakes. Add the weight transfer during braking, and the ratio is even higher, so regardless of what you have in the rear, the front brakes will do most of the braking, no matter what. IMHO, the only time rear disc would be clearly beneficial is when fully loaded, or towing a sizeable trailer.

Having said that, does anyone have any hard data to show how much better is braking with rear disc brakes?

[93BigBlackBronco]

Originally Posted by greystreak92

Guys, guys, disc brake conversions work EVEN BETTER with ABS because you DON'T need an adjustable proportioning valve, the ABS computer reads the brake response and adjusts fluid flow to the rear brakes accordingly. Remember that the sensor for the rear portion of the ABS is the VSS in the top of the rear diff. housing. So, swapping to rear dics with ABS actually makes the swap a simpler project than if you had a standard barking system.

That makes sense Thanks Grey

[JetBlackBronco]

so how hard is it to remove the axles? i have never done this, and id like to know what im getting myself into if i decide to do this.

[94 XLT White/ Silver 302]

To remove the axles,
remove rearend cover
remove the pinion shaft lock-bolt
pull pinion shaft out
push axles in
remove c-lock from the groove in the end of the axles
pull axles out.

If you have a Haynes book it should have pictures of the axle removal.

[greystreak92]

Originally Posted by body9599

does this apply to those of us without VSS? 89's didn't have VSS right?

Those trucks without the VSS/ABS on the rear axle will most likely need an adjustable proportioning valve.

In response to argathor's comments about front heaviness and weight transfer I don't refute any of it. But, in those instances when we who do load our trucks with gear and do use them to tow, wouldn't be be nice to know the added beneift of discs on the rear are there WHEN they are needed? You may not need the jack and the tire iron all the time either but you sure are glad they are there when a tire goes flat. I see rear discs as an improvement not unlike adding a selectable locker. No, it may not come in to play every day but when it does, its damned nice to have it. I don't know about the rest of this community, but I for one find myself using my Bronco to its full potential on a regular basis.

[gov2mod]

JetBlackBronco, while I would like to have disc brakes on my Bronco's as well I wasn't aware of any that had factory rear disc. I've got a 90, 91, and 93 Bronco and they all have drum on the back.

[JetBlackBronco]

i dont remember what year it was, but they did come with rear discs, along with the f150s