I have wilwoods in my car which use additional brackets but are fairly easy to install and lok geat plus save a good chunk of wieght
picture is when i was initialy fitting for spacer sizes etc
.jpg)
I have a 3.62 LSD Sierra diff with the bolt on half shafts and I'm trying to figure out what options I have for rear discs and calipers and
whether they all run the same hubs.
I already have discs and calipers from a XR4x4i but not bought the hubs yet and was thinking I might try get some alternative discs and calipers but
not sure they would fit or even if others exist?
I have used VAG calipers on mine. they cost about £40 for a pair from ebay and weigh less than the sierra ones. bolt straight on as well.
the siera stuff is the easiest choice as it bolts staight on then there are the aftermarket calipers like wilwood or high spec etc which genrally fit
with additional brakets etc
I have wilwoods in my car which use additional brackets but are fairly easy to install and lok geat plus save a good chunk of wieght
picture is when i was initialy fitting for spacer sizes etc
I have the hi specs on the rear of my Indy..jpg)
Simply to satisfy my curiosity - why don't people use the original Sierra rear calipers if using sierra rear discs? What are the drawbacks?
Weight?
The standard calipers are suprisingly efficient despite being a single piston. I changed mine to Wilwood Poerlites and was qite dissappointed that they didn't work any better, especially the handbrake which is appalling.
Alloy Astra calipers on the rear of mine there less than half the weight of fords but did have to alter the mounting hole
Rescued attachment DSC00134.JPG
The Sierra rear calipers aren't particularly heavy (in comparison to the fronts), although weight can be saved by going for Wilwoods or Hi-Spec.
It's a bling thing which is then justified by the weight savings. 
Phil
Actually, in terms of weight, it really depends on what stuff you go w/ for the wilwoods. I went w/ a 120-9687 "Single Caliper" (like is
used for formula cars), and an aluminum hat, w/ a drag race rotor. The stuff cost about the same as what RallyD charges for their Powerlite sierra
rear replacement kitt, but is MUCH lighter (and lightyears lighter than the stock sierra stuff).
Rescued attachment P1010022.small.JPG
For the stuff i used, the weights are:
Caliper: 1.4lbs
Hat and rotor combined: ~6lbs
Plus a custom aluminum bracket for mounting the caliper.
Here is a shot of how it mounted on the bracket, from the back:
Rescued attachment P1010033.sm.JPG
Oh, i forgot to note, the only problem w/ my setup is that it does not have a provision for a mech handbrake.
I am going w/ a line-lock, but i know that is not acceptable for UK SVA...
-Scot
[Edited on 18/2/08 by scotmac]
Scot, that bracketry certainly looks lightweight (looks about 3mm 
) but are you sure that it is strong enough for road use? The reason I ask is that
my Wilwood bracket is 10-12mm thick
Hi Scotmac:
Did you get the rotor and hat from Wilwood.
I don't find them listed in the Wilwood web site.
Thanks for any brake advice.
How about a rotor for the front to bolt to the raceleda upright?
Cheers
Roger
quote:
Originally posted by RazMan
Scot, that bracketry certainly looks lightweight (looks about 3mm
quote:
Originally posted by RogerL
Hi Scotmac:
Did you get the rotor and hat from Wilwood.
I don't find them listed in the Wilwood web site.
Thanks for any brake advice.
How about a rotor for the front to bolt to the raceleda upright?
Cheers
Roger
, especially for the rear, but it is the smallest Wilwood does for a "hat" based approach that will
work w/ a sierra bolt pattern (4x108). I actually had to buy the hats "blank", and have them drilled by a local machine shop. The drilling
was $90 for the pair...not too bad. Oh, and even though the rotor is large, the setup is soo light, it doesn't really matter. And the larger rotor gives you better cooling.
Only negative is wheel size. I wanted to go w/ 14" for racing and to lower the ride height, but now that is out the door. I can only fit 15"
over that rotor and caliper.
Here are the Wilwood part numbers, followed by the summit links to them:
WIL-120-9687 CALIPER $98.95
WIL-160-0201 ROTOR REAR DRAGSTER $79.95
WIL-1713753 MOUNTING HAT $79.95
WIL-230-0233D ROTOR BOLT KIT $9.95
http://store.summitracing.com/partdetail.asp?part=wil-120-9687
http://store.summitracing.com/partdetail.asp?part=wil-160-0201
http://store.summitracing.com/partdetail.asp?part=wil-1713753
http://store.summitracing.com/partdetail.asp?part=wil-230-0233d
quote:
Originally posted by RogerL
How about a rotor for the front to bolt to the raceleda upright?