drum to disc brake conversion

Rc4r

Rc4r

New member
Has any one done this in the rear? I am really intreasted in doing this but need to get facts and all the info before I jump into it.
 
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After the many threads I've seen of people interested in this and those who have actually done it, I can say that it's not worth the time and/or money.

Just do the tundra upgrade and you'll be fine.

and no, I think if you use Cadillac calipers you can retain your ebrake.
 
it would probably make more sense to upgrade your front brakes since they handle 70-80% of the stopping power of the truck.

The Tundra brake mod is popular. I upgraded my front brakes to Brembo cross-drilled & slotted rotors with performance pads.

:D
 
ARKRWLR said:
After the many threads I've seen of people interested in this and those who have actually done it, I can say that it's not worth the time and/or money.

Just do the tundra upgrade and you'll be fine.

and no, I think if you use Cadillac calipers you can retain your ebrake.
Click to expand...

do you know what model cadillac? i do enough water crossing where i wheel that i would really like to do this but dont want to lose my ebrake
 
the kid said:
do you know what model cadillac? i do enough water crossing where i wheel that i would really like to do this but dont want to lose my ebrake
Click to expand...

Im telling you, talk to Driffter33 he has actually done this mod, he can tell you how easy/or hard it is and what the ups and downs are.

I can tell you from experience, the brakes help him crawl down stuff that even Tundra brakes would have problems...

its amazing watching 4 disc brakes on a 4runner.

I will do the Tundra brakes then consult Driffter33 when Im ready to do my disc conversion.
 
Sorry guys been swamped at work and need to be getting there now. So. real quick, 85 Cadillac el dorado rear calipers and the mounts, rotors, I got from sky manufacturing. Now I had to space the mounts out as they did not fit may housing just right. I have all custom break lines in the rear. I also was very unhappy with the way my conversion was working and went farther. I swapped in a mastercylinder from a 76 Chevy blazer that has a 1-1/8th in bore to move more oil. Again all custom break lines to swap in the mastercylinder. Now another problem is that our rear axles have a small amount of end play, this is bad for disc breaks because as the axles moves in and out it pushes the pads away from the rotors. Why is this bad? Because now when you stomp on the breaks the fronts come up tight but the tears are just taking up the distance that they have been pushed away. I have some pictures in my build thread. Back to the ebreak you need to have custom cable system to pull the ebreak lever on the calipers. I have not yet got this part working yet. I know bikerjoshis try to get the ebrake part figured out also. So basic driving around town can get a bit harry at times, with my current setup. However off-road THEY ROCK!!!! I will add more later this evening though it might be late as I know I will be working late again today.
 
Here is an old thread with some good reading.
toyota-4runner.org/3rd-gen-t4rs/32544-all-pro-off-road-rear-disc-conversion-kit-review.html
 
I do not recommend this conversion to anyone that is not very comfortable, and. knowledgeable in working on your runner a lot. Now I am hope others that have done this will chime in and maybe I can learn a lil something too. Info on a proportioning valve would be great. I would still like to get my setup to work better for the every day driving.
 
Rear disk conversion

So when I bought my rig, the PO had done the mod w/Sky Manf. brackets and Eldo front disk calipers (no e-brake tabs/levers). I looked into new calipers about $170 for a deal on them, but the cable system design seemed a little problematic routing and creating a nautulis like gear for increased cable take up required for those calipers. I've been researching manual line locks, but they all seem to bleed pressure over time and may create a situation for premature seal wear. I will most likely end up buying Sky's transfercase brake system, and then try to modify it work with the V6 chain drive t-case.
Here's a picture

005-1.jpg~original


I haven't had the same issues with brakes that driffter33 mentions that would be helped by using a proportioning valve, but I might try that.
Josh
 
So, is there an easier way to do this now, it is the rear conversion still considered not worth it?

Both of my real axel seals are leaking currently.
 
Because 3rd gens tend to eat through rotors. The guy I talked to at EBC told me this is because the rear drums basically do nothing. Now, I don't know if he is fully correct or not. But he certainly did SEEM to know his stuff. The front handles like 75%~ of braking right? He made it sound like with the 3rd gen rear drums, the fronts are taking more like 90%.
 
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