yota rear disc brakes

[szabotage]

I'm interested in discing my 'yota rear end. I'd like to get some feedback on options for this topic.

[MLC]

KAC and i did our's and we both love it ....we both used kick rotors redrilled them and used the kick calipers fabbed up some brackets werks mint....seeing how i ran my kick fer 2 years with out any rear brakes ...:yike ...lol

[szabotage]

sounds interesting, any feedback to the redrilling?

I heard of GM 6bolt discs and calipers as an option, any knowledge to that setup?

[szabotage]

if any mods wanna fix my spelling error, I meant 'disc' not 'dic' if you didn't catch on :thefinger

[xtrmtoy]

I've done rear disc brakes two different ways over the year.

The first method involves using 88+ front Chev 1/2 ton 4x4 discs and having the rotor centers machined to fit on the axle shaft flange. The bolt pattern is the same as the toy. This works well and gives you vented rotors. For the calipers I've used mid 80s Montecarlo calipers as well as caddy calipers which have a parking brake. The parking brake on the caddy calipers is useless and they're a real pain to keep adjusted. For the caliper bracket, you can make them or buy them from someone like Sky Manufacturing. You can also buy some universal ones from stock car places.

Here's two sites that will help:
http://www.off-road.com/toyota/discs.html
http://www.mindspring.com/~jayk3/toyota/discs.htm


The second method involves turning down the flange O.D. on the axle shafts to allow a front toy rotor to fit. You can use a toyota solid axle rotor which is non vented or an IFS rotor if you want vented. For calipers, with the non vented rotor you can use front sammy calipers. This works well and is the setup on Zukin's rig. You could also use the toy calipers but they require a fair amount of fluid displacement. For the caliper brackets you just need to fab some up.
If using an 86+ toy axle you will also have to machine the center hole of the toy rotor to fit on the axle flange. Not needed on the 79-85 axles.

With both setups, you may want to add a proportioning valve, a residual valve and maybe a larger master. Depends how adjustable you want to make your rear brakes and how pickie you are about pedal feel.

I'll see if I can round up a few pics tomorrow.

Oh! And sorry, I can't change the tittle. You'll have to stay with "dic brakes" :rofl:

[KAC]

We used the kick rotors cause they were $10.00 each NEW

[Grumpy]

Hey Szabo, when you figure out your set-up, you can do up a duplicate for me to throw on the wife's truck :brows:

grumpy

[zc911]

i'll be using the first method xtrmtoy mentioned, i have all the parts just gotta bolt em on. Since the truck is sitting for the winter i am gonna put them on come spring

[Depot]

I did the chev mthod. Ordered a set of brackets from sky 75 US a pair including bolts and just blot everything up. chev rotors need to get the center hole machined out and i used Sonoma calipers with no ebrake provisions. works mint!

D

[szabotage]

who needs e-brake provisions when you got a t-case mounted drum brake! :brows:

[Fullload]

Thats why i used the toy rotor from a soild axel front truck, on a late model (87 up) rear axel with samurai calipers. it'll lock all four swampers on the pavement from 60 kms!!!

Machine the rotor hole out to match the rear flange and machine the rear axel flange down to the inside diamater of the rotor. Make up 1/4 plate brackets space accordingly and go.

Best part is that it is all metric. and no real need to swap boosters due to all the fluid that the big sonoma calipers want.


One problem i had is that the toy rotor is a little too thick for the sammy caliper, but i found out that the 4 door kick's came with vented rotors therfore more room to slip over the rotor.

I think the kick's and the sammy boosters are interchangable and if so use the kick booster as it is biggeras well. I did not have to as i built a kick so it was done for me.

[littlejackass]

I did the chev mthod. Ordered a set of brackets from sky 75 US a pair including bolts and just blot everything up. chev rotors need to get the center hole machined out and i used Sonoma calipers with no ebrake provisions. works mint!

D

What are you using for a master cylinder? I have been told that the sami ones can't handle the bigger brakes!

[zc911]

i think Depot is using a J e ep master cylinder.

there are easier swaps though, almost any Japanse car booster and master will fit, you may just have to modify the rod that connects to the brake pedal.
I used a Subrau Impreza WRX STI master and booster, biggest master i have seen on any car. I also plumped in a adj. proportioning valve from Spidertrax

I know various honda ones work, and Nissan too.

[szabotage]

I'm thinking of going with fullload's idea using the toy rotors with kick calipers, I already got the calipers, just gotta pick up the rotors.

do the solid axle rotors differ from the IFS ones?

I'll take pics when I get to it later on this winter, right now I'm focusing on building a 4.1 t'case and twin sticking it. that should keep me busy for a lil while.

[Canadian_zuk]

do the solid axle rotors differ from the IFS ones?



yes

solid axle=solid rotor
IFS=vented rotor

[zc911]

you can swap from the solid ones to the vneted ones. Just means you have to go with the calipers from the vented rotors.
I think it;s a worth while upgrade.

[Mrs. CZ]

you can swap from the solid ones to the vneted ones. Just means you have to go with the calipers from the vented rotors.
I think it;s a worth while upgrade.


maybe if he was using them up front.
For the rear I think he's better off using the solid rotors and the kick calipers. The smaller kick calipers will require less fluid than the four piston IFS calipers. It would probable give him better brake bias without needing to swap masters and adding a proportioning valve. Plus he's already got the kick calipers.

[szabotage]

kick calipers won't work on the toy vented rotors? even 4dr kick calipers?

[zc911]

woops ya i ment up front. i should have specified.

If a kick has vented front rotors, then you can probably mod them to work on he rear of a toy axle.
But really a vented rotor in the back is not that much of an upgrade.
i just did it becuase my axle came withe veything but the calipers