Brake Ducts on AE86, anyone done this ?

[beeker]

How did you route the ducting to get it close to the rotor centre, but avoiding the wheel hitting on full lock ?

Got pics ?

[Rick]

[beeker]

Thats an E30 M3. I'm struggling with the best path for the AE86 without it getting to be the lowest hanging part on the car.

[wde_bdy]

Thought about coming down the strut from above?

Callum

[beeker]

Thought about coming down the strut from above?

Callum

But that means cutting a hole in the inner steel guard. I have considered this, but I would be concerned if this affects the structural strength of the wheel well.

[wde_bdy]

Nah, just run from the front along the side of the inner guard up high to the spring seat area and then down from there. you just need enough slack to allow for the spring movement and a bit of turning. Should be easy to keep it well clear of the wheel.

Callum

[beeker]

Nah, just run from the front along the side of the inner guard up high to the spring seat area and then down from there. you just need enough slack to allow for the spring movement and a bit of turning. Should be easy to keep it well clear of the wheel.

Callum

I'll take a look, but from memory the 205/15" wheel on lowered suspension gets pretty close in there.

[wde_bdy]

What offset you running? I've got 15 x 6.5's in P20 offset with 205/50's on my KE70, not running ducting yet but from what I looked at there was definitely room to get through there. What diameter ducting have you got?

Callum

[beeker]

What offset you running? I've got 15 x 6.5's in P20 offset with 205/50's on my KE70, not running ducting yet but from what I looked at there was definitely room to get through there. What diameter ducting have you got?

Callum

Its 3" 600C high temp brake ducting. Running 15x7" wheels, offset errr 8 or 15 (cant remember).

I've just checked, and on full lock the tyre touches the ducting when trying to duct accross the top and then down the strut, even without any further compression caused from bumps or hard turns. So that plan wont work.

I assume the AE86 is different from the KE70. Any other ideas ? Surley some AE86 owners must have done thus ??

[Dell'Orto]

They arent that different really, they are both Corollas after all.

Could you maybe run ducts from the centre of the front lip, and aim them at the back of the rotors?

[beeker]

They arent that different really, they are both Corollas after all.

Could you maybe run ducts from the centre of the front lip, and aim them at the back of the rotors?

I can get the ducts to just short of the front of the tyre, but thats not really effective. Probably better than nothing, but ideally you get the air feed right up to the rotor itself. Some even create a custom rotor covers as above on the E30 M3 example and feed the air right into the rotor itself.

Anyone else put ducts into an AE86 ???

[85AW20v]

I'm pretty sure that Fred from Hamilton doesn't run any ducting on his Targa AE86 - the yellow one - and with 185hp at the wheels if he needed it he would have it. He runs four pot Wilwoods all round but I'm not sure on the pads. I'll find out and let you know.

[beeker]

I'm pretty sure that Fred from Hamilton doesn't run any ducting on his Targa AE86 - the yellow one - and with 185hp at the wheels if he needed it he would have it. He runs four pot Wilwoods all round but I'm not sure on the pads. I'll find out and let you know.

Yeah, fred has a nice car. Obviously when you run a thicker and larger rotors ducting isnt so important. As im still running std ae86 brakes so I tend to get small bomb fires at the end of long stages!

Do you have freds email ? or ph ? I've been meaning to ask him another question.

[nzae86]

Hi there
Fred's work number is 07 8505240
Sorry I haven't got back to you on the axles as i have been away , i do have some spares for my rally car but I did fit brand new one's when I rebuilt my car, but I dont want to part with them, try grant as I'm not sure if he sold off eveything with his 20v ae86.
i run bigger rotors on the front of mine (same size as evo 1-3) and never have a problem with it stopping.Try fitting some pagid pads as we use these in all types of rallying and are one of the best pads for ae86's to capris, to evos,but rotor size and pad area is where it's at
Cheers
Steve W

[beeker]

Hi there
Fred's work number is 07 8505240
Sorry I haven't got back to you on the axles as i have been away , i do have some spares for my rally car but I did fit brand new one's when I rebuilt my car, but I dont want to part with them, try grant as I'm not sure if he sold off eveything with his 20v ae86.
i run bigger rotors on the front of mine (same size as evo 1-3) and never have a problem with it stopping.Try fitting some pagid pads as we use these in all types of rallying and are one of the best pads for ae86's to capris, to evos,but rotor size and pad area is where it's at
Cheers
Steve W

thx Steve.

[beeker]

I'm pretty sure that Fred from Hamilton doesn't run any ducting on his Targa AE86 - the yellow one - and with 185hp at the wheels if he needed it he would have it. He runs four pot Wilwoods all round but I'm not sure on the pads. I'll find out and let you know.

Spoke to Fred today, and they have just got 195WHP out of his NA 4age. Not too bad if you askme.

[85AW20v]

The 195whp would be out of what he calls his "good" motor. The 185whp is out of his spare!! We ran the spare one for 4 days of Targa last year after losing the good one at Inglewood after the last stage on the Tuesday but he's done a bit to it since then.

[beeker]

Ended up doing this:




Couldnt get the outlets any closer without rubbing on the wheel, or risking affecting the steering. Ideally you would cut a hole in the engine bay wall and come straight to the hub, however I didnt want to risk that one.

[RS13]

Probably not too relevant, but on the ae92, the ducting for the brakes is built into the rear of the backing plate, like this:




It sticks out from the inside of the wheel, directing airflow onto the rotor through those vents. Perhaps fabricating a diffuser like that for your car may be more effective than the hose? I'd imagine the flow of air coming from the hose to the brakes would be almost non-existant with such a cross-draught.

[beeker]

Probably not too relevant, but on the ae92, the ducting for the brakes is built into the rear of the backing plate, like this:

It sticks out from the inside of the wheel, directing airflow onto the rotor through those vents. Perhaps fabricating a diffuser like that for your car may be more effective than the hose? I'd imagine the flow of air coming from the hose to the brakes would be almost non-existant with such a cross-draught.

Interesting idea. Perhaps for a rainy day.

The photo's I have posted looks like there is a large gap, but in reality its less. It was directly copied from another AE86 Targa car, and quoted as making a difference, so fingers crossed. They previously didnt need them, but like myself once the bib spolier got installed, the brakes needs additional air.