Front brake cooling ducts mod

Brake Cooling Ducts

To help cool the brakes under road-racing conditions.

Parts Required:
Two plastic rain gutter funnels, six feet of 2 1/2″ diameter
shop vac or high temperature hose, duct tape, about 15 (14″ long) tie-wraps. 
Everything is available at hardware stores.
Time Required: 1-2 hours
Note:  below pictures are of the left side of the car. Jack the front wheel at
least 3″ in the air for easier access.

1. Cut the hose in half; we’ll use
one section of hose per side. On one end of each hose, split the hose in 4 places, about
3″ from the end (fig. 1).

cuthose.JPG (17020 bytes)

fig. 1

2. Wrap this around the funnel’s
smaller end and duct tape the ever-living crap out of it (fig. 2). Hey, it’s not a real
project unless duct tape is involved!

duct7.JPG (17091 bytes)


fig. 2

3. Screw the funnel to the
undercarriage of the car using the existing screws as shown in fig. 3 & 4. Note: on my
funnel, there were two tabs with holes sticking out the “front”. As shown in
fig. 4, I put a screw thru the inside-most tab. I cut a 1″ slit as shown in fig. 4 on
the opposite side of the funnel and put a screw thru the slit (took a little practice to
line up with the hole in the car).

duct2.JPG (16678 bytes)

fig. 3

duct3.JPG (14991 bytes)

fig. 4

4. Tie wrap the back end of the
funnel (where the hose is attached) snug up against the underside of the car by routing
the tie wrap thru the slots in the wheel well behind the intercooler opening (fig. 5). I
had to attach 2 tie wraps together for the proper length.

 duct4.JPG (16439 bytes)

fig. 5

5. Cut the hose to a length such
that when aimed at the brake rotor, it is about 2-3″ away from the rotor (fig. 6).
Don’t place the hose too close to the rotor, as the rotor gets very hot. Tie wrap the hose
using several tie wraps at strategic locations such as the lower control arm and the
plastic under-body of the car (you can see the hole I punched thru the plastic in fig. 6).

 duct5.JPG (17579 bytes)

fig. 6

Figures 7 & 8 show the final

duct6.JPG (16624 bytes)

fig. 7

 duct1.JPG (14280 bytes)

fig. 8


Comments/suggestions? Email me


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