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Brake ducts

appletonn

appletonn

New member
OK, so can someone (Paul [:D]) tell me where the ducts should be fitted to the later (90 & 91?) cars such as mine?

At this stage I just want to improve the airflow from the front to the disks - the 968 'ears' can come later if required!

Here's a pic of my front o/s wheel well - much like spot the ball, could someone please indicate where the older cars had their ducting?

Thanks very much

[:D][:D]

http://www.photobox.co.uk/album/album_fullsize.html?c_photo=1435172189
 
Hi Nick,

First off could you upload the picture to the web site? We may not all want to join photobox just to see your picture. [;)]

Earlier turbos had ducts behind the grilles which directed air on to deflection plates on the struts. AFAIA later cars didn't have these ducts, so it might be worth starting there.
 
I can't see your picture either, but here is a pic that shows where the ducts come through the front wheel arch liner on M030 cars. It's the oblong thing to the right

973E8E5FC7204B168C4E95BA956ED328.jpg


It cam from a thread here where we discussed brake cooling:

http://www.porscheclubgbforum.com/tm.asp?m=303182&mpage=1&key=ducts
 
Found this pic of my left front duct, taken from under the car looking forwards. Compare this & the pic Paul posted to yours & you'll see which part of the wheelarch liner needs to be cut out. IIRC you can see in the moulding on the liner where the hole needs to be, although it may be more clear once removed & you can see the outer surface.

Left_Duct_Fitted.JPG
 
ORIGINAL: appletonn
so can someone tell me where the ducts should be fitted to the later (90 & 91?) cars such as mine?
Click to expand...

They actually were discontinued on 90/91 cars but can be easily retrofitted.
 
My Air pipes go from the the front of the car straight through to the gap to the right side of the disc as in your picture, i then used a jubilee clip which i drilled two a holes in so i could bolt it to the lower part of the strut, and then fed the air pipe through the jubilee clip directly at the disc...[FONT=verdana,geneva"]
 
Erm, now I've actually got a picture posted that people can see ([8|]), hopefully you can see the 'cat flap' (technical term [;)]) in the front of the wheel arch liner. I thought that maybe this was where I could feed the duct through, but looking at the pics you have all kindly supplied, it would appear that I have to cut a hole in the liner lower down.

I will get the ducts first and figure out how to fit them afterwards - will post some pics once it's done.

Thanks guys, helpful as always.
 
The above duct will push air into the wheel arch but directly at the wheel, if you get a decent lenght of air ducting pipe and feed it from the rear of the disc to strut, down to the plastic wheel arch lining behind the wheel securing with cable ties to keep it pulled into the arch then through the large the gap which can been seen to the lower right of the disc in your above pic and then directly to the front of the car either to a duct or placed behind the bumper vents, this will give you direct air to the brakes with little labour and cost...
 
I've actually seen a brake duct attachment somewhere that attaches to the hub behind the disc that divers all the cooling air from a hose (that could be attached to the through-arch ducts shown in the photo) so the air is channelled throught the internal cooling vents of the disc, entering though the inboard slots and exiting from the outer rim of the disk. This is how the disk is intended to be cooled rather than just directing air onto the exterior of the disc as it cools both halves of the disk the same. For the life of me I cannot find the link or the site that sells these but it is the solution i'd ultimately opt for.
 
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