Here they are 12
" front brakes from 85 corvette fitted to Fiero front spindles in an
easy to read insturctions from Joe
Grenier
Installation
Start by undoing the brake hose be sure to pinch it
off with Vise Grips to keep from letting all the fuid from running
out into your work area
Remove the rotor and then remove the old caliper bracket
using a 19mm socket and rachet and remove the backing plate
The area I'm pointing to must be smoothed and leveled
using a grinder or heavy file. This is to make a surface for the adapter
to bolt to and drill out the old holes to 12mm (17/32) as the old
threads are no longer used
This is a comparison of the two setups the stock on
the bottom and the Vette on top the rotors are 88 and the calipers
and brakets are 84 to 87
This is how the finished spindle should look after drilling
and leveling out and a little cleaning
install the cut hub and new rotor then bolt the adaptor
to the brake bracket as seen above using 12mmX1.75 cap screws
With the adapter and bracket together slip the pieces over the rotor
in the fashion displayed in these 3 pic and the rotate it into the
bolting position
Bolt it up with the same 12mmX1.75 cap screws then install the pads
as you normaly would
Consentic rings front outside diam. 2.785 inside diam. 2.240
rear outside diam.2.785 inside diam. 2.255
drill spindels to 7/16
tap drill size 13/32 for use with the 12mm 1.75 x 30mm long cap
screws
Block dimentions 1"x 2.5' x 4.5' long
7/8" thick nothing less or the adapters are no good and caliper
brackets will rub this uses no washers to line things up
Bolt Spacing - Here you go boys the
diamentions for the brake adapter
Newest parts to be added Large 12 inch brakes from an 85 Corvette
and its is the easest brake swap any one can do if you have a drill
press
These pieces are all you need to do the swap 2 consentric rings
for the rotors to keep them centered
and 2 1X4.5x2.5 piece of 7/8 inch mild steel for the coliper adapter
use this link to go to my site to see more on big brakes and
hub conversion to 5 X 4/34 bolt circle
Although my information
comes from various builders and sources, if you want any information
contact me. The photographs used on this site are used with permission,
if you want to use any, contact them through the various links on this
site. I did and you can see the results!
