Brake cooling ducts
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91banditt2 (07-30-2022)
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Car: 1991 BandittII Firebird
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Re: Brake cooling ducts
Some tweeks, Didn't like how much of the incoming air would hit the inboard rotor face, can/could cause uneven rotor cooling which can lead to rotor cracking, ideally you want the incoming air to be directed at the rotor center so the rotor fins can direct air evenly across the entire rotor
A little cutting and welding and it's more better.
I may try and adapt some ZO6 front brake ducts
A little cutting and welding and it's more better.
I may try and adapt some ZO6 front brake ducts
Last edited by 91banditt2; 08-05-2022 at 09:32 AM.
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DynoDave43 (08-04-2022)
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Re: Brake cooling ducts
Also powder coated them for better protection from the elements and they look good in a textured black powered coat.
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DynoDave43 (08-04-2022)
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Re: Brake cooling ducts
Yeah it’s looking like it will work like a real race cars braking system. Those ZO6 ducts are nice, maybe they will be long enough and a nice contour. Keep us updated.
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91banditt2 (08-04-2022)
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Re: Brake cooling ducts
Just remembered that a friend of mine bought a 08 ZO6 that had some fender damage and he ended up replacing the front brake ducts so I may be able to get them for super cheap or free if he still has them, stay tuned…….
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Tombowman89 (08-04-2022)
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Car: 1991 BandittII Firebird
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Re: Brake cooling ducts
I ended up buying a set of brand new ZO6 brake ducts off of eBay for $80.Initial mock-up looks promising, I think these might work. Pictures are of front lock to lock with the front suspension at full droop.
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DynoDave43 (08-11-2022)
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91banditt2 (08-11-2022)
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Re: Brake cooling ducts
I like that bro, I know pictures can be deceiving but it looks like that duct is rubbing the tire. What kind of duct is that?
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91banditt2 (08-11-2022)
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Tombowman89 (08-11-2022)
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Re: Brake cooling ducts
Looking down from top of the tire
Last edited by 91banditt2; 08-11-2022 at 10:34 PM.
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Re: Brake cooling ducts
Modifications
The outlet is under sized for a 3” hose and it’s an odd shape and I expect it being problematic trying hose clamp the 3” hose. I’m going to rivet a 3” OD X 1-1 1/2” long aluminum tube to this side so the hose clamp has something more to grab onto, similar to the picture below.
Probably gonna cut these about where I’m showing in the pic above. Gonna need a 4”-3” reducer, I’ll see what our local hardware stores have this weekend
The outlet is under sized for a 3” hose and it’s an odd shape and I expect it being problematic trying hose clamp the 3” hose. I’m going to rivet a 3” OD X 1-1 1/2” long aluminum tube to this side so the hose clamp has something more to grab onto, similar to the picture below.
Probably gonna cut these about where I’m showing in the pic above. Gonna need a 4”-3” reducer, I’ll see what our local hardware stores have this weekend
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DynoDave43 (08-12-2022)
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Re: Brake cooling ducts
You da man, that’s a really nice package, you’ve cracked the code bro. That’s a super nice solution “ you all should take notes from that man right there”
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91banditt2 (08-11-2022)
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91banditt2 (08-12-2022)
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Re: Brake cooling ducts
An update:
3” OD aluminum tube cut to 1” long, 4 holes drilled to 9/64” for 6-32 stainless steel screws.
In the picture above you can see the aluminum tubing is somewhat square, and in this picture you can see difference in the shape. I’m using 6-32 nylock nuts
Aluminum extension installed, due to the difference in shapes of the ZO6 brake duct and the aluminum ring I squeezed some expanding foam to help as much air to the calipers.
Felt a second mounting point was necessary
Checking both sides this spot on the brake ducts and the body where both similar in flat spots for the brake duct to sit flat against the body.
Two stainless steel #14 x 3/4” sheet metals
And to cover the hole a 7/8” plug, found these at Lowes in the hardware aisle.
Picture is of the driver side wheel with the coil spring compressed using a floor jack, wheel was raised until the frame started to lift off of the jack stand. I’m running 1000lb front coil springs on weight jacks with a 36mm sway bar so I’m going for a flat turning car with very little body roll, I won’t really know if this enough clearance until I get this car on the road again.
At full droop and full lock and with aluminum extension and the 3” hose installed the hose comes into with the 17x9.5 ZO6 wheels with LS1 brakes which pushes the wheels out a little less than 1/4”, I’m using 2” wheel spacers. I add this for future searchers, this brake duct set will not work for factory wheels and brakes.
For the inlet to the ZO6 brake ducts im waiting on these to come in, the measurements list in the Amazon add seem to be the right size for what is needed, their supposed to be here on Monday
3” OD aluminum tube cut to 1” long, 4 holes drilled to 9/64” for 6-32 stainless steel screws.
In the picture above you can see the aluminum tubing is somewhat square, and in this picture you can see difference in the shape. I’m using 6-32 nylock nuts
Aluminum extension installed, due to the difference in shapes of the ZO6 brake duct and the aluminum ring I squeezed some expanding foam to help as much air to the calipers.
Felt a second mounting point was necessary
Checking both sides this spot on the brake ducts and the body where both similar in flat spots for the brake duct to sit flat against the body.
Two stainless steel #14 x 3/4” sheet metals
And to cover the hole a 7/8” plug, found these at Lowes in the hardware aisle.
Picture is of the driver side wheel with the coil spring compressed using a floor jack, wheel was raised until the frame started to lift off of the jack stand. I’m running 1000lb front coil springs on weight jacks with a 36mm sway bar so I’m going for a flat turning car with very little body roll, I won’t really know if this enough clearance until I get this car on the road again.
At full droop and full lock and with aluminum extension and the 3” hose installed the hose comes into with the 17x9.5 ZO6 wheels with LS1 brakes which pushes the wheels out a little less than 1/4”, I’m using 2” wheel spacers. I add this for future searchers, this brake duct set will not work for factory wheels and brakes.
For the inlet to the ZO6 brake ducts im waiting on these to come in, the measurements list in the Amazon add seem to be the right size for what is needed, their supposed to be here on Monday
Last edited by 91banditt2; 08-13-2022 at 07:13 PM.
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Re: Brake cooling ducts
Picture is of the driver side wheel with the coil spring compressed using a floor jack, wheel was raised until the frame started to lift off of the jack stand. I’m running 1000lb front coil springs on weight jacks with a 36mm sway bar so I’m going for a flat turning car with very little body roll, I won’t really know if this enough clearance until I get this car on the road again.
At full droop and full lock and with aluminum extension and the 3” hose installed the hose comes into with the 17x9.5 ZO6 wheels with LS1 brakes which pushes the wheels out a little less than 1/4”, I’m using 2” wheel spacers. I add this for future searchers, this brake duct set will not work for factory wheels and brakes.
At full droop and full lock and with aluminum extension and the 3” hose installed the hose comes into with the 17x9.5 ZO6 wheels with LS1 brakes which pushes the wheels out a little less than 1/4”, I’m using 2” wheel spacers. I add this for future searchers, this brake duct set will not work for factory wheels and brakes.
Actually making the jump to LS brakes all around, but plan to keep my factory 16" wheels.
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91banditt2 (08-14-2022)
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Re: Brake cooling ducts
Unless you have adjustable steering stops and you plan to use the car only for the track “ Totally justified” at least that’s what I would tell myself.
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Re: Brake cooling ducts
The size difference is real close
Using a heat gun to make the brake duct plastic a little more pliable it fits pretty snug
And some rivets to make sure the reducer doesn’t move
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Re: Brake cooling ducts
DynoDave43 There’s still hope, I assumed and I should know better since I work in R&D. I assumed because of the smaller diameter of a 16 x 8 that the ZO6 brake duct would come into contact with a factory wheel, it appears that I assumed incorrectly.
Factory front GTA wheel with no spacer, full lock and full droop, with the weight of the car on the front suspension there maybe plenty of clearance
Factory front GTA wheel with a .1776 wheel spacer at full lock and full droop
Factory front GTA wheel with no spacer, full lock and full droop, with the weight of the car on the front suspension there maybe plenty of clearance
Factory front GTA wheel with a .1776 wheel spacer at full lock and full droop
#69
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Re: Brake cooling ducts
Shorten one of the plastic tubes or maybe heat gun that corvette duct to the angle that offers the best clearance or maybe even shorten the aluminum tube a little.
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91banditt2 (08-15-2022)
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capzst (03-10-2024)
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Re: Brake cooling ducts
Your going to reduce brake fade a lot by keeping them cooler.I’ll be installing a hydratech brake system on my car as soon as it arrives. Look them up when you get a chance. It’s about a grand and 8 month wait, but if you have a rad cam and don’t have alot of vacuum this unit will boost you brake pressure from the power steering big time.
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91banditt2 (08-17-2022)
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Re: Brake cooling ducts
This is a great thread and I'm glad some of you are already trying some stuff out for brake cooling. I'm trying to decide how to do this with my 1991 Formula with Wilwood 14" 6 piston brakes. They don't have a backing plate and the Starbuck system looks like something better than nothing but I kind of wanted the ducts to go all the way up to a backing plate. Once I finish my LS3 build for this car I'll get to work in this
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91banditt2 (10-25-2022)
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