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Brake Duct Questions

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Old Oct 9, 2002 | 05:04 AM
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Solracer's Avatar
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Default Brake Duct Questions

This off season I am probaly going to work on putting some brake ducts on the Del Sol. It looks Like I could get 2 of the dual hole/hose scoops from Racers Wholesale to work. I was thinking of running one hose to try and blow air into the Vanes of the rotor, and one on the Brake Caliper. Would that be overkill? Would just blowing air into the rotor vanes, or just blowing air on the caliper be enough?

Thanks
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Old Oct 9, 2002 | 05:29 AM
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Default Re: Brake Duct Questions (Solracer)

Is this for any particular class? If so, check rules - I know IT allows only one 3" duct per side.

Try to route one duct to the center of the rotor - the air will be drawn through the rotor's vents and out. If you have a second duct, location is up to you - the caliper will work, but also think about ball joints and other meltables (some of the fat cars generate enough heat to melt ABS lines and ball joint boots).
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Old Oct 9, 2002 | 05:48 AM
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Default Re: Brake Duct Questions (Solracer)

He just does HPDEs for now Al.

David - I think you will find it extremely difficult to get a duct run to the vanes of the rotor. There isn't enough room to get stuff into there. About the best that most of us with Civics/Integras can do is angle the hose at the caliper area.

There is a possibility that if the hose is flexible enough you could get it to blow on the back of the rotor, where there is no caliper to block it.

Another possibility are the metal scoops that someone here made which attach to the LCAs. I am still not convinced they will survive an off but those didn't use any space where the hoses would run so theoretically you could do both.

1 hose is a tight fit. You won't get 2 in there . . .
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Old Oct 9, 2002 | 05:54 AM
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Default Re: Brake Duct Questions (Drew M)

Also, in Street Prepared, no bodywork or structural changes to accomodate the ducts.
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Old Oct 9, 2002 | 06:11 AM
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Default Re: Brake Duct Questions (Crack Monkey)

Oh yeah - fergot ab00t the whole autocross thing . . .

David was about ready to give up on autocrossing anyway.
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Old Oct 9, 2002 | 06:24 AM
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Default Re: Brake Duct Questions (Drew M)

"David was about ready to give up on autocrossing anyway. "

Pretty Much I have only done one all year . I have no class.. ah wait I have no partiucular road race class I am trying to fit in right now so that is not an issue either. What is the best marterial to use for hose? I know dryer hose works well but I have seen some smaller hose's but I have not clue what material they are made of.
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Old Oct 9, 2002 | 06:34 AM
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Default Re: Brake Duct Questions (Solracer)

I have no class..
We know . . .

I use the $4 Home Depot ****. 3" flexible HVAC ducting. Dryer hose is real thin and will wear through easily. It is also hard to find in 3" ID. The only real issue with the HVAC ducting is that when it is crushed it doesn't come back out but I consider brake ducts a consumable and silicon hose is just too damned expensive. Go to Home Depot and buy lots of it and you will be fine.

I wouldn't go larger that 3" ID because you start to lose pressure at that point.
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Old Oct 9, 2002 | 06:35 AM
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Default Re: Brake Duct Questions (Solracer)

Most people use dryer hose. I haven't seen anything else.
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Old Oct 9, 2002 | 07:14 AM
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Default Re: Brake Duct Questions (Solracer)

I use the expensive orange silicone stuff from Racer Parts Wholesale. It's long lived and makes it look like I know what I'm doing (when I in fact do not).

Invest in lots of zip ties - you'll need them to keep them out of the way of pulleys and such.
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Old Oct 9, 2002 | 07:51 AM
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Default Re: Brake Duct Questions (Solracer)

i sudjest fiberflass, go to a hardware store and get some resin and fiberglass cloth
you can make a duct that will be perfect for your car and will look snazy
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Old Oct 9, 2002 | 08:57 AM
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Default Re: Brake Duct Questions (fuguman)

The hose is a wear item but can last a while with careful routing and lots of cable ties. I run my ducting along the inner fender and behind the strut and attach to the upright with the outlet within a couple inches of the rotor.

You will want to direct the outlet of the hose as close to the center of the back of the rotor since this is where the rotor draws in the cooling air from.
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Old Oct 9, 2002 | 09:30 AM
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Default Re: Brake Duct Questions (ITC Racer)

Thanks for the info guys.
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Old Oct 9, 2002 | 01:42 PM
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Default Re: Brake Duct Questions (Solracer)

Autozone air intake hose 1.5"-3" diameter; about $10 for 6 feet
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Old Oct 9, 2002 | 08:56 PM
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Default Re: Brake Duct Questions (ITC Racer)

....and lots of cable ties.
Amen. Zip ties are your friend.
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Old Oct 9, 2002 | 11:46 PM
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Default Re: Brake Duct Questions (johng)

....and lots of cable ties.

Amen. Zip ties are your friend.
zip ties are holding my engine in.

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