RBX

I am starting to assemble my Disc Brake conversion, here is the plan

Use solid front rotors from an 83 Hilux(using solid because most available rear calipers with an e-brake will only clear a solid rotor's thickness)
Rear Celica Supra Calipers 79-80(Mid 81 they changed the caliper)
Davez caliper brackets for the GM brakes....will be modified.
rebuild the axle while everything is torn apart.

Problem:
The rotor will not fit over the axle flange, and the hole for the locking hubs is too small in diameter. If i mill the rotor, every time i replace the rotor it will need to be machined, i don't like this idea, but i know lots of folks do it.
I also need to clearance the axle flange to fit inside the rotor. I have seen plenty of threads where guys just spin the axle and take a grinder to it till it clears.

Solution:
Take the axle to the machine shop and mill the center (where the hub would go 108mm approx) down to, 98mm approx, fit inside the rotor hub area. Then mill the outside of the flange to fit inside the rotor.
So if i ever need to replace the rotor, it is an off the shelf purchase, no modifications....and i am closer to installing a full float rear.

Does anyone see a problem with the above solution?

I haven't seen anyone mill the axle flange to fit the rotor.

waskillywabbit

iTrader: (-1)

FROR full floater kit and run any Toyota disc brake setup you want.

:wabbit2:

RBX

Thanks Wabbit, that is my intention, but i don't have all he coin yet for the conversion, plus i need to source a few parts, like the Supra Calipers...which i cannot find, i have even called Raybestos and Centric...not in stock and do not know when they will get them.
I need an ebrake which is why i waas going this route...but i may be forced to do the Sky or All Pro t-case brake. If i do that, i just through some SFA calipers on the rear....but I'd rather keep my ebrake and have $200 toward the full-floater.

BigBluePile

iTrader: (3)

I've had ZERO issues with my All Pro rear disc kit and have been running it for YEARS as a DD. Single piston GM calipers work MORE than well enough. Actually I'll probably be rebuilding them. You could also use the El Camino caliper that has ebrake incorporated. The tcase ebrake is nice but it's a PITA to deal with sometimes....

xxxtreme22r

someone on pirate was just liquidating rear disc brackets for like $10 a set or something like that to use the post 85???? calipers. Oh wait nevermind you want to retain the rear ebrake on the calipers and not have to t-case brake it.

BigBluePile

iTrader: (3)

Thanks for reading.....

xxxtreme22r

RBX

haha...
I would like to have a e-brake caliper, and i wanted to try to keep it as toyota and single vehicle as possible for simplicity of locating parts....
I have a clocked t-case, with a 2" BL, will that be sufficient room if i go with the t-case e-brake?

Is there any issue with milling the axle? Hub area most specifically

xxxtreme22r

I was under the impression the t-case ebrake fits without needed a body lift, but not sure on the clocked part.

RBX

That's what I understand the question is clocked. Pretty sure I just need to modify the arm that connects to the cable.

xxxtreme22r

RBX I cannot rememebr not gonna look at build thread, but you running a 4cyl gear drive t-case? if not the all-pro and sky t-case brakes only work on the 4cyl gear driven cases.

Nothing mentioned on either site about clocking though. But that's how I noticed both say 4cyl case.

RBX

Yep, i have the Inchworm adapter on the back of the R150 so i can run the gear driven t-case RF1A, and clocked 10°. So yes, this is why i can use a transfer case parking brake if i need to go that route.

xxxtreme22r

ok thought so just wanted to be sure.

RBX

I cannot source any Supra brakes! whether it be the desired 1402 casting or the not so 1501 casting.
I have scoured the web, and no go. I have tried local J/Ys and no dice. If anyone has any suggestions i am all ears.
Plan B is to put front calipers from an 85 Hilux RWD, since they are cheap and easy to come by.

xxxtreme22r

RBX what year surpa did those come from?

RBX

Celica Supra 79-81 mkI
I think mid model year the caliper changed in 81 to the 1501 casting. The differences between the two castings are primarily mounting hole spacing...something like 5.5"(desired 1402) to 6.5"...IIRC.

xxxtreme22r

I'll keep an eye out up here as well. Have you looked at some junk yard search engines? How about new aftermarket?

xxxtreme22r

holy cow: http://www.autozone.com/autozone/par.../N-ivdn1Z8knrp

$106 a piece if you don't have the core. Ridiculous $52 core charge.

RBX

Yep, tried car-parts.com even asked for quotes across the country. I've tried craigslist, local yards, aftermarket.
I originally had ordered calipers from finditparts.com because they showed as being instock. But as most websites these days, inventory is not reflected online... I swear this is a ploy to get you to buy an item that they never stock. Anyhow, I called and asked what the eta was and they called Centric, centric responded with 'indefinitely' back ordered'.

xxxtreme22r

New Castle Auto Wrecking, Inc.
2627 Ellwood Road New Castle PA 16101
800-245-2226


81 SUPRA LE Caliper
LR 5-92 IN 79 CHV VAN 17201
RR 5-92 IN 79 CHV VAN 17201

Stock # F2637/58945 & F2637/56029 $65 a piece.

But it shows 81 that cutoff year.

Next closest I found is in TN and are from an 80 and are $35 a piece.