Brake Cooling - How much difference?

[SharpyClio]

I had a look but couldn't find anything specific, I am wanting to add some cooling to the brakes as they do get warm on track days, however the ducts I have seen just seem to dump the air somewhere in the vicinity of the wheel arch, does this actually have the desired effect? I have seen the Corvette duct option but ideally I'd like to keep the arch liners.

If just adding air to the under arch area works then I'll go with a simple kit otherwise I will look at what I might be able to do with the Corvette ones.

Cheers

 

[Neil Clio 182]

I managed to keep my liners inplace with the C6 Ducts, you need to heat and bend the ducts a little to make them fit.

 

[SharpyClio]

I managed to keep my liners inplace with the C6 Ducts, you need to heat and bend the ducts a little to make them fit.

View attachment 1664557

That's good to know! Having the air onto the discs seems like the most efficient solution, so I may well get some and fig out the heat gun! Thanks.

 

[Advikaz]

I managed to keep my liners inplace with the C6 Ducts, you need to heat and bend the ducts a little to make them fit.

View attachment 1664557

Have you got an install thread on this/pics/instructions etc mate?

 

[Neil Clio 182]

Have you got an install thread on this/pics/instructions etc mate?

I don't I'm sorry, I'm no mechanic and just went for it tbh...

 

[Advikaz]

I don't I'm sorry, I'm no mechanic and just went for it tbh...

Like your style.

Assuming they're feeding through the old fog lights? How did you route them through/around the arch liner?

 

[Mr Underhill]

Have you got an install thread on this/pics/instructions etc mate?

@FrogJam Motorsport came up with the idea on their thread here - https://cliosport.net/threads/brake-cooling-ducts-for-clio-2.838511/#post-12103684

 

[Neil Clio 182]

Like your style.

Assuming they're feeding through the old fog lights? How did you route them through/around the arch liner?

I added some 3d printed fog ducts and piping to make it esier, I have seen people just use the corvette brake ducts. FYI I have removed the carbon canister and acoustic valve on mine, makes it a bit easier.

 

[SharpyClio]

Ive removed the CC and acoustic valve, got to do the service at the weekend so going see what sort of space there is to play with

 

[Mr Underhill]

There are some really smart brake duct solutions out there, especially for road going cars that do a few track days.

I always fancied the K-Tec racing ducts so mocked some up on the track car. They’re definitely ugly but will do the job. The current theme of the car is Black with Yellow cage, yellow brake calipers, yellow hoses, so just wondering if I should continue with that and paint them yellow 🤔

 

[JimF]

I kinda like how ugly they are! Makes them look purposeful. What about if you re-fitted them from behind, so the "flange" was hidden, and the cutout only showed the guts of the vent?

 

[Mr Underhill]

I kinda like how ugly they are! Makes them look purposeful. What about if you re-fitted them from behind, so the "flange" was hidden, and the cutout only showed the guts of the vent?

Yeah, you tend to see them more on proper circuit cars, because as you say, they serve a purpose.

When they arrive I'm whipping them into the body shop at work and they're going to see if they can integrate them into the bumper.

Then I'll get the whole bumper repainted, including vents, so it looks cleaner.

 

[Ph1 Tom]

Depends on the brake setup I suppose. I found I never needed them on the Clio. 207bhp, about 900kg and Brembos with 283x26 2 piece discs. Nor my Megane for that matter, 310bhp about 1100kg and 330x28 2 piece discs.

But I can appreciate that maybe those with the lots of power, standard kerb weight and/or standard callipers and discs might need them.

My M3 needs them for sure.

 

[R3k1355]

They don't look too bad at all considering they're just slapped straight on.

 

[SharpyClio]

Depends on the brake setup I suppose. I found I never needed them on the Clio. 207bhp, about 900kg and Brembos with 283x26 2 piece discs. Nor my Megane for that matter, 310bhp about 1100kg and 330x28 2 piece discs.

But I can appreciate that maybe those with the lots of power, standard kerb weight and/or standard callipers and discs might need them.

My M3 needs them for sure.

It’s the one thing I struggled with in track, standard brakes on mine and I was cooking them (might be me and still getting used to track driving) but if I can get them cooler without needing to upgrade to Brembos (for now at least) that be a start.

I quite like the ducts Jon, they look very purposeful.

 

[Ph1 Tom]

Short and sharp on the brakes, don't drag them. Minimises the heat build up.

But the standard callipers concentrate the area that pressure is applied unevenly through the inefficient design of a single piston calliper creating a hot spot. And the calliper is cast iron so it has more thermal mass and dissipates heat a lot slower. Same goes for the discs.

Hopefully the ducts work for you!

 

[SharpyClio]

Short and sharp on the brakes, don't drag them. Minimises the heat build up.

But the standard callipers concentrate the area that pressure is applied unevenly through the inefficient design of a single piston calliper creating a hot spot. And the calliper is cast iron so it has more thermal mass and dissipates heat a lot slower. Same goes for the discs.

Hopefully the ducts work for you!

If they don’t it’s a good excuse to upgrade!

 

[SharpyClio]

Short and sharp on the brakes, don't drag them. Minimises the heat build up.

But the standard callipers concentrate the area that pressure is applied unevenly through the inefficient design of a single piston calliper creating a hot spot. And the calliper is cast iron so it has more thermal mass and dissipates heat a lot slower. Same goes for the discs.

Hopefully the ducts work for you!

i know I’m probably on the brakes for too long, I need to brake later and harder but for less time. Just getting used to it vs road driving… just a bit nervy I think.

 

[green]

I found after a long stint on track my brakes started to fade so bought a kit off eBay and just with fresh air venting into the wheel arch solved the problem.
I was using Carbon Lorraine RC6 pads with a Tarox F2000 discs and standard calipers.
Should’ve stuck with that setup as it scrubbed off speed so quick. The next problem it crated was the tyre rubber going off
I’m now using Brembo’s with the DS1.11 pad as people raved about them but don’t seem to have the same bite.

 

[SharpyClio]

I found after a long stint on track my brakes started to fade so bought a kit off eBay and just with fresh air venting into the wheel arch solved the problem.
I was using Carbon Lorraine RC6 pads with a Tarox F2000 discs and standard calipers.
Should’ve stuck with that setup as it scrubbed off speed so quick. The next problem it crated was the tyre rubber going off
I’m now using Brembo’s with the DS1.11 pad as people raved about them but don’t seem to have the same bite.View attachment 1665556

That’s good to know, that venting location looks good actually a few I’ve seen come in at the top and I just couldn’t see how they would work. This looks good. 👍

 

[Filipe Dias]

I found after a long stint on track my brakes started to fade so bought a kit off eBay and just with fresh air venting into the wheel arch solved the problem.
I was using Carbon Lorraine RC6 pads with a Tarox F2000 discs and standard calipers.
Should’ve stuck with that setup as it scrubbed off speed so quick. The next problem it crated was the tyre rubber going off
I’m now using Brembo’s with the DS1.11 pad as people raved about them but don’t seem to have the same bite.View attachment 1665556

Imho nothing beats RC6 / RC8 regarding pure stopping power . Maybe Endless in some compounds.

 

[youngarthur]

I always used ds1.11,, but now use winmax W5, excellent stopping power, but more progressive than the DS. As far as Brakes/Disks are concerned, most of you know to get on the brakes, get off ,dont linger, even in 30deg heat, Ive never had a problem.

 

[kurai]

From my experience they do a nice difference.
Fabricated some ducts made out of fiberglass from foglights with a shape similar to corvette ducts but made to perfectly fit clio chassis. I attach a couple of pictures took during the prototyping.
Unfortunately I ended up removing the mudguards because the car is very low and at monza the tire grabbed one of those and ripped it away.
I even did some grilles to avoid big things to get inside.
Anyway..
To my experience they do a big difference. Tested at Monza track without having brake issues of any sort (running 280+ wilwoods midilite).
I compared the use of car on a local short test track and behaved very well. On July with like 36C ambient temperature without them I had to cool down after some laps, with them I've been able to push hard the whole time without issues.

In the last pic there is the almost finished duct, it only misses the last bend that connects to the 3d printed 100mm housing bolted to the foglight bracket. I managed to lost the picture.
Now my car is away mapping for new cams, when it comes back i can take a picture if someone wants to see

 

[Filipe Dias]

From my experience they do a nice difference.
Fabricated some ducts made out of fiberglass from foglights with a shape similar to corvette ducts but made to perfectly fit clio chassis. I attach a couple of pictures took during the prototyping.
Unfortunately I ended up removing the mudguards because the car is very low and at monza the tire grabbed one of those and ripped it away.
I even did some grilles to avoid big things to get inside.
Anyway..
To my experience they do a big difference. Tested at Monza track without having brake issues of any sort (running 280+ wilwoods midilite).
I compared the use of car on a local short test track and behaved very well. On July with like 36C ambient temperature without them I had to cool down after some laps, with them I've been able to push hard the whole time without issues.

In the last pic there is the almost finished duct, it only misses the last bend that connects to the 3d printed 100mm housing bolted to the foglight bracket. I managed to lost the picture.
Now my car is away mapping for new cams, when it comes back i can take a picture if someone wants to see

Those ducts look awsome!

 

[kurai]

Those ducts look awsome!

Thank you so much!

 

[SharpyClio]

From my experience they do a nice difference.
Fabricated some ducts made out of fiberglass from foglights with a shape similar to corvette ducts but made to perfectly fit clio chassis. I attach a couple of pictures took during the prototyping.
Unfortunately I ended up removing the mudguards because the car is very low and at monza the tire grabbed one of those and ripped it away.
I even did some grilles to avoid big things to get inside.
Anyway..
To my experience they do a big difference. Tested at Monza track without having brake issues of any sort (running 280+ wilwoods midilite).
I compared the use of car on a local short test track and behaved very well. On July with like 36C ambient temperature without them I had to cool down after some laps, with them I've been able to push hard the whole time without issues.

In the last pic there is the almost finished duct, it only misses the last bend that connects to the 3d printed 100mm housing bolted to the foglight bracket. I managed to lost the picture.
Now my car is away mapping for new cams, when it comes back i can take a picture if someone wants to see

Been away, so a delayed reply... These look spot on. I wish I had the capability to make something like this. Great job.