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rear disk brakes

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Offline Rhinoman

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Re: rear disk brakes
« Reply #15 on: December 05, 2004, 10:58:10 PM »
One problem I found with my rear disk conversion (Ford Probe calipers) is the handbrake lever ratio is different. The handbrake comes up 11 notches before the brake holds. It needs a longer end on the handbrake lever to give it some more pull. Another issue is that the bigger calipers need more fluid to push them, that means more pedal travel. You can get a valve from Wilwood that holds a little pressure in the calipers If you turn down the drums to make adpaters then you need longer studs. The front studs aren't long enough so you'll have to source some longer ones - make sure the shoulder is long enough or the discs won't locate properly. The stock drums are made of cheese so you may find that once you've knocked the studs out the holes left will be too loose to take new studs so you have to either drill out the holes and fit slightly oversize studs or weld the studs in place
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Offline smb_racing

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Re: rear disk brakes
« Reply #16 on: December 06, 2004, 04:21:45 PM »
For anyone considering this kind of project in the states (perhaps abroad as well) the ford Taurus in the mid 90's with the rear disc brakes would be an excellent donor. I have a '95 taurus and the rear calipers have the built in parking brake lever, are a simple 2 pin slide mount and take a rather beefy pad. The rotors are solid, non vented, and are about 11" in diameter with 5 stud holes.
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Offline wildgoody

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Re: rear disk brakes
« Reply #17 on: December 06, 2004, 04:30:08 PM »
Wrong stud spacing, but I think a project
like this would use the front rotors of a Track/Kick.

I have 2 pair of front 2 door rotors, and 1 pair
of calipers from the front also, which were left
over from my 4 door caliper swap.

The front disks from a Track/Kick measure 11-1/4"
which would make the caliper fit good, but the back
of these little trucklets is so light, I don't know if
that big of a caliper is a good idea, after all a rear
lockup in a vehicle that short means a spin in a
heart beat.

Wild
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Offline cj

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Re: rear disk brakes
« Reply #18 on: December 06, 2004, 09:17:38 PM »
I have a spare set of vented fronts of my lwb that I swapped out for the new slotted rotors. My problem is the front end dive with the Calmini 3" causing the rears to lock. I need to get some balance back when I go to rear discs.
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Offline wildgoody

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Re: rear disk brakes
« Reply #19 on: December 07, 2004, 02:19:40 AM »
Don't you have a proportioning valve ???
If you do it needs to be reset to the
propper height to stop this lockup problem.

This is one reason I built the rear spacer
for the A-link, now I know that it's better
to wheel with too, as I get 24" of wheel
lift before the opposite side leaves the
ground   8)

Wild
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Offline smb_racing

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Re: rear disk brakes
« Reply #20 on: December 07, 2004, 02:41:50 AM »
the problem with using front rotors on the rear is, of course, lack of a parking brake. However, to combat that problem you could always go with a hydraulic line lock, just a thought  ;)
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Offline wildgoody

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Re: rear disk brakes
« Reply #21 on: December 07, 2004, 02:46:23 AM »
Or rather the caliper, the rotor it's self
has no parking feature, it's just a disk.

Wild
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Offline 1bigtracker

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Re: rear disk brakes
« Reply #22 on: December 07, 2004, 03:29:10 AM »
Quote
For anyone considering this kind of project in the states (perhaps abroad as well) the ford Taurus in the mid 90's with the rear disc brakes would be an excellent donor. I have a '95 taurus and the rear calipers have the built in parking brake lever, are a simple 2 pin slide mount and take a rather beefy pad. The rotors are solid, non vented, and are about 11" in diameter with 5 stud holes.

very good idea, too bad the Taurus is a 5 on 4 1/2? (can't be 5 on 5 1/2)  whats got 5 on 5 1/2 bolt patteren with rear disks?  Explorer is 5 on 4 1/2.   what was the lincoln that had disk brakes on a 9in in the rear?  somthing like versile

stu
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Offline smb_racing

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Re: rear disk brakes
« Reply #23 on: December 07, 2004, 07:59:00 AM »
I meant calipers not rotors  :-[
I sold auto parts for a few years, the wide 5 bolt patten is pretty much restricted to general motors products, nissans, older AMC and Jeep vehicles, and dodge pickups.
« Last Edit: December 07, 2004, 08:03:47 AM by smb_racing »
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Offline chet

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Re: rear disk brakes
« Reply #24 on: December 07, 2004, 08:13:02 AM »
and ford pick ups!  ;D and suzukis   :P
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Offline wildgoody

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Re: rear disk brakes
« Reply #25 on: December 08, 2004, 01:41:06 AM »
Your best bet is to use the front Kick
rotors on the rear with some machining
to get them to fit, then swap a caliper that
has a hand brake built in, rotors aren't the
problem, it's the caliper that needs to be
worked out.

Nissan Maxima or Bluebird for you Downunder
blokes, is a good swap, the right size and is
a Tokiko made (read OEM supplier) so you
could claim the rear disk setup is Suzuki Factory
equipment  ;)

Wild
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mudfkr

Re: rear disk brakes
« Reply #26 on: December 29, 2004, 06:47:13 PM »
Well as I can't wheel my POS at the moment I decided to do some work on the disk brake set up tonight.


I machined  the old drum to mount the disk on, I need a bigger lathe as the drum only just fitted  ::)


I need to cut the old backing plate up to go between the gap you see here or have a look at finding another way around it - I didn't really look to hard at it tonight  :P


Heres were I'll probably mount the caliper, I'm thinking that way it will give me the most out of hand brake cable and chances are most of the crap that gets in the caliper will naturally want to fall out.

I had a bit*h of a time trying to wind the hand brake actuator back in the caliper tonight to get it over the disk freakin POS was frozen solid, like  1.5 hrs of pi$$ing around with it and I had to pull it right to bits. Now I think I stuffed some thing up in the order I put back together cause the adjuster isn't working right.

Sooooo I had to walk away before I threw my toys outa the cot  ;D I'll start over again in the morning and she'll be all right  ;)

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Offline SiKiD_01

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Re: rear disk brakes
« Reply #27 on: December 29, 2004, 10:43:09 PM »
ok, i'm trying to follow this build and all the advice and info in here, but different people from different continents are saying different things.

i got the info about using blue bird or maxima calipers, good. i can get a set of front rotors off a 3dr vit. well, i think i have a set in the store room. cant remember.

but this is where i get stuck/confused! Shane from NZ has machined his drums to....

... fit inside the disc rotors, and the drum studs go through the disc. right?

now what about the axle falling out? i think some people call it the backing plate? what would i do here? will it need to be a custom fab job? or is there something existing i can use?

i've seen a rear disc conversion kit, costs way too much, but this 'backing plate' that holds the axle in, also is the mount for the caliper.

so i guess the caliper mount needs to be a custom fabbed job as well.

i think thats all, i'm not sure if there is anything else that is involved, but i will be following Shane's build and this thread closely.

Thanks.
Steve
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Offline wildgoody

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Re: rear disk brakes
« Reply #28 on: December 30, 2004, 03:40:23 AM »
The backing plate holds the drum brake
wheel cylinders, and the shoes in place,
it does not hold the axle in, there are 4
bolts and a small cup, about the size of the
axle tube that holds the bearing into the
end of the axle housing, the bearing is
pressed onto the axle shaft.

You will need to fabricate caliper mounts,
I would bolt them to the back side of the
axle housing flange, make it a 2 bolt bracket
that will fit over the axle tube, should be of 1/4
to 3/8 plate (8-10mm) I would go with 10 mm
I think, you could also weld the caliper bracket
on if you never plan on going back to drums

Wild
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Offline mrfuelish

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Re: rear disk brakes
« Reply #29 on: December 30, 2004, 05:07:06 AM »
Sikid, what some do is torch the brake drum backing plate down real small so it is just bigger than the four small bolts holding the axel in so the axel would never know that it is not there!
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