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SVO 11-inch rear discs on an '86 Capri
Click on any photo to enlarge.
If you're reading this, you probably realize by now that the stock brakes
on the Fox-chassis Capris (or the Ford version, the Mustang) leave quite a bit
to be desired. While ten-inch front discs and nine-inch rear drums were fine for
slowing my 4-cylinder Capri down from its top speed of 38 MPH, slowing down the car
with a V8 under the hood could be a white-knuckle endeavor. (Must have been because
of the extra weight or something.)
Normally, the first step to take would be to swap out the front brakes with the
11-inch binders off of an '87-93 Mustang V8, or from an '84-86 Lincoln or SVO if you
wanted to bring your lug nut count to five. However, I picked up the whole set
of rear brakes off an '84 Continental in a U-pull yard for $40, and I was tired of
the box of parts laying around in my "oughta do that" pile.
A quick note: If you're changing both fronts and rears and going to 5-lug rims,
you can use the front suspension off of a '94-up Mustang (including A-arms) and the
Lincoln/SVO rear axles, bolt the rear discs on without modifications,
and use the M1007-R179 rims all around. You'll get a better suspension geometry
in the front and a good excuse to replace those worn-out front bushings.
| The first thing you'll need to do is pop the axles. To do this, jack the car
up, put a drain pan under the axle, and pop off the cover bolts. Leave the top
two on until most of the fluid is drained. Next, apologize to your wife for
the smell, and promise it won't happen again, again. Take off the wheels and
brake drums. If you look at the picture, you'll see there's a bolt in a notch
on the carrier. Using an 8mm wrench, unbolt that and slide it out. That bolt
holds in the pin in the middle. With the bolt out, the pin should slide out
easily. Push the axles in from the ends, and you should be able to remove the
C-clips with a magnet or needle-nose pliers (or gravity). Either slide the axle
shafts out carefully, or plan on replacing the wheel bearing seals (cheap).
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Next, you'll want to do is get rid of the stock drum brakes, especially
if yours look remotely similar to mine. Twelve years and flipping the odometer twice
don't make them look any prettier. Easiest way to do it is to unbolt the four nuts
next to the axle bearing, disconnect the parking brake cable (a 13mm box wrench
helps), and try and sell it on eBay. Don't disturb the brake dust too much,
unless you like breathing asbestos.
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| Now, if you look at your Lincoln brackets, you'll notice that the hole for the
axle is the same size as the axle tube. Ding! We can solve all our spacing
problems (which you're aware of if you tried to bolt on the discs) by just
attaching the bracket directly to the axle.
Using the photos as a guide, cut the stamped-steel caliper bracket in half (so
you wind up with two non-symmetrical pieces). Drill out the brake rotors for
four-lug. Bolt the rotors to the axles, and "assemble" the brakes so you can
get the spacing right. Use compressed air to hold the caliper closed. Tack-weld
the stamped-steel bracket onto the housing, and when you're sure everything is lined
up right, disassemble everything and MIG-weld the bracket. (I had all this work
done at Takash Racecraft in Orlando for about $200, 'cause I didn't have a MIG welder
at the time. Beautiful work.) Make sure you get the bleeder screws above the
center-line of the axle, or you'll never get the air out.
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Now, go ahead and bolt all your brake hardware back onto the axle. If your car
didn't come with dual exhaust, you can use the factory Lincoln brake tubing on the axle.
Otherwise, modify your existing tubing and install the brake hoses. On mine, the
brake hoses rubbed against the bracket (since it's an extra inch inboard), so I cut
a piece of vacuum hose lengthwise and wrapped it around the brake hose to give it
some armor.
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The next steps take place in the engine compartment. Since you've got rear
discs now instead of drums, they use a lot more brake fluid to make them grab.
Source a master cylinder out of a Lincoln or SVO. My 4-cylinder also used a
21mm (about 3/4 inch) bore, but the Lincoln used a 1-1/8 bore. You may need to
replace your brake booster as well. Since the Lincoln uses a Hydro-Boost setup,
a rebuilt SVO vacuum unit is a better choice (if you need it).
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