Brake cooling scoops wanted

[Gary.H]

Just did my first (Novice) trackday at Brands on Tuesday. First outing since Robin at 9M worked his magic on the suspension upgrades. It's like a new car now. Most fun I've had with my clothes on []

So, now the inevitable questions ( after the brakes went away from me towards the end ):

Does anyone have the brake cooling scoop kit for sale ? 9M say they hadn't sold any for a few years and so have discontinued them. RennSport do a similar thing but they want $300 ( compared with the £120 for the old 9M version ) ! Seems a lot to pay for a couple of scoops and some ducting ?

Is there any downside to removing the dust shields ( apart from having to remove the discs [] to do it ) ?

The car is an '82 SC Sport but has (genuine) 3.2 Carrera discs/callipers and pads all round.

Cheers - Gary

 

[bruceb]

Gary

It may be worth changing the pads and fluids first if your brakes were fading. Standard pads tend to glaze and this reduces considerably the braking efficiency. So if you had standard pads an upgrade to some decent pads and race fluid will work wonders.

There are many options and preferences on the best combination. I have used Motul 600 and Ferodo DS3000 without problems on ten plus trackdays on my SC with standard brakes without the cooling kit.

Only this year have I fitted the expensive brake cooling kit (Pelican) and carrera 3.2 brakes after starting to run the stickier R compound track day tyres.

 

[Gary.H]

Cheers Bruce,

Forgot to mention I have ATE Super Blue fluid and SS hoses. I assumed the brake fade was down to boiling the fluid, hence the cooling questions. I thought glazing only happened when the pads were new ? Can it happen through continous heavy braking ?

I recently needed new discs/pads all round and front calipers, so took the opportunity to upgrade to Carrera 3.2 brakes with their thicker discs ( primarily for better heat disipation ) but also because it gives more options for future caliper upgrades.

Did you remove the dust shields as well ?

 

[Guest]

You could try some original Porsche 993 items which are not exactly scoops, more deflectors and they zip tie onto your suspension arm. They appear to be very cheap and the part numbers are :
993-341-083-00 Left hand
084-00 Right hand

Ian

 

[bruceb]

The symptons you describe are exactly what I had on my car with the OEM pads after a lot of heavy track day braking. If the brake fluid boiled there would be no brakes at all, so as long as that has not happened, I'm fairly sure its the pads going off.

The bigger 3.2 discs will help a lot with heat dissapation and as Ian says the 993 air scoops with your back plates removed will give some really reliable braking as long as some decent pads are fitted to complerment the ATE fluid and SS brake lines already fitted.

Its probably worth hitting the search button for recommendations on which pad to use!

My ducted system does have the back plate removed, but the 993 scoops are a real bargain and in all likely hood will be sufficient to get the job done.

cheers

 

[Guest]

993 scoops look like this (with 964 calipers on 951 discs for a 3.2!)

 

[Gary.H]

Thanks Richard,

Unfortunately had no time to sort out the brake cooling.

I found that all the right handers at Brands had destroyed the nearside rear and offside front wheel bearings [] Obviously pushing the old girl a bit hard !

The nearside rear hub had also been damaged by running withe the failed bearings []

I wonder if anything else can fail ? shouldn't be much left to break now [].

Obviously the price you pay for driving it every day ( hard )

Cheers - Gary

ps Tyres are very worn and may have a slow puncture so new tyres next on the shopping list. A whole new area of decision making !

 

[Mike58]

Hi Gary
I've just taken my scoops off of my 3.2 , they are the same as the 9M set , made by AJ-R USA.
They are a bit < used > and could do with some new ducting but they are cheap.
PM me if interested.
Mike

 

[Melv]

Time to revise your braking technique!!! -good hard bang rather than prolonged and ensure you do a cooling down lap after your session, don't touch the brakes if you can!

It's also quite instructional to do a lap or two without touching the brakes -certainly makes you plan ahead...and actually, you'll fnd you are not much slower.......because you will carry more speed thru the corners -go on, try it!!

 

[Gary.H]

Melv,

Yeah - I know. I was all set to do the 2 cooling down laps. But each time I was staying out a bit too long, then coming in once I started losing concentration and beginning to make mistakes and totally forgetting about the cooling laps ( at least I remembered not to put the handbrake on in the pits ! )

Got to get her fixed up and reshod with new rubber before I can track her again.

So, one hard stab at the brakes is the way to go is it ?

Cheers - Gary