BrokeAss

I've started shopping for a brake cooling kit and found that they fall into two categories - those with lights and those without.

The one's with fog lights - fuhgehdaboutit - they're waaay too much $. I've used my fog lights maybe twice in the last two years - and the first time was just to figure what the hell that **** does.

...ok, so I've convinced myself I just want a brake cooling kit. Trouble is those kits don't come with any plumbing - they seem little more than a molded fiberglass inlet. While it's easy enough to buy some hose and tie wrap it to the suspension, it doesn't seem the "right" thing to do. I've seen at least one kit that had the plumbing and (for lack of a better description) a "tapered outlet" that seemed to fit where the brake backing plate normally would go.

What do you do with the end the cooling hose? Just tie wrap it something? What's the best way and place to direct the cooling air?

I'd appreciate any been-there-done-that you guys care to share!

Flying Finn

Terry,

You can either get AJ-USA kit that "sucks" air under the suspension arms and has backing plate which replaces you existing one (maybe one zip tie needed) or you can do as I've done, which is the one "that doesn't sound right".

There is (at least in 993) an opening where the duct goes quite nicely. I'm planning to fabricate a pipe to my backing plates (AJ won't sell them separately) for the duct to go in and have the portion that needs to be "squished" fabricated out of aluminum.
Check the picture, bigger is my set-up now and lower shows S-Car-Go's pieces which are what I want to fabricate (those carbon pieces would be great but they are expensive...

Flying Finn

Here's a pic of it installed:

Bill Gregory

Terry,

Per my other post - you have limited choices. The pre-89's have better options. OG Racing is about the only company I know that sells a kit to pick up air from under the a-arm and route it to the rotor directly. If search is working, do a scan for info from other users. I've seen it and it probably wouldn't be my first choice, though it is an option. Another option is replace the fog lamps. Check with Mike Shaw in CA, I know he offers the entire kit, as do other vendors. If you've looked at the Performance catalog or the FVD parts, they are pricey, and I don't think Performance offers the kit complete with all parts for brake cooling. Another option would be to drop a scoop forward of the front axle and via a hose route air to the rotor. Or you can get the front fog lamp scoops and run a hose back, as shown above. You might take off a wheel and spend some time staring at the accessability. There's not alot of space to get air to the rotors.

Bill Gregory

The AJ-USA backing plates are available separately from Smart Racing, however, they don't fit 964's, due to hub design differences. One might have an easier time adapting a cylinder that can be added to the existing backing plate.

BrokeAss

You're right Bill - when I read your previous post earlier this week, I started looking around and it reinforced what you said - there ain't a lot out there!

I wish that AJ USA kit would fit a 964! It would also be nice if they made it from something afforable to those of us with Carbon Fiber dreams and fiberglass budgets!

I thought for sure someone would offer a cost effective ducting kit!

Guess I'm going to have to invite the Finn over to my house one Saturday - I'll bring the nylon tie-wraps and plumbing!

BrokeAss

Here's a photo of the OG Racing Cool Brake Kit that Bill referred to.



...so that thing just tie-wraps onto the A-Arm eh? I'd be concerned I'd tear it off the bottom of the car! While it looks like it would work, it looks like it's made to last only for a single race!

Bill Gregory

That's the pre-89 911 kit you've pictured. The 964 kit is different. The a-arm scoops typically only get ripped off if you go agricultural.

JW in Texas

Terry,
The OG kit is the one I used & they sold it to me without the A arm scoops. I bought carbon fiber brake scoops that replace the fog lights & routed from there to the OG backing plates. It's tight getting past the oil cooler & A/C condensor but it can be done using metal A/C duct. You can mold the duct around things & it won't rip like the neoprene. Once you get back to your wheel you need to transition to neoprene to make the curve to attach to the new OG backing plate. I will try & pull a wheel tonight & take some pics.

JW in Texas

Terry,
Here's a few pics. The bugs had a party on my front bumper last night on the way home

http://members.rennlist.com/walker4953/DCP_1343.JPG

http://members.rennlist.com/walker4953/DCP_1348.JPG

http://members.rennlist.com/walker4953/DCP_1349.JPG

http://members.rennlist.com/walker4953/DCP_1350.JPG

Hope this helps. Drop me an email if you have any questions.

Flying Finn

If you don't bring the beer also, furgettaboutit!

JW,

So OG sells backing plates only?

What size are they (I have 2.5" hose)?
And finally, are 964 & 993 backing plates the same?

JW in Texas

Finn,
Seems like mine were 3" but you could probably make them work. I told OG I already had the front ducts & they just credited back the lower scoops & sold me the rest. Very easy guys to deal with.

Cupcar#12

just food for thought....
you will get higher pressure airflow from the nose of the car - rather than taking air from under it - small diff but....
also you should use the smallest hose you can fit on the duct - I fab'd a simple funnel to step it down to a 2" hose

Flying Finn

JW,

I went to their web site and you're right, it's 3" but shouldn't be that hard to make them work. I want to get that aluminum "squished" piece first and then get these.
I'm in no rush since my current system works well (last weekend at Moroso, after cool down lap, my fronts were tad cooler than rears!).

I agree with rlynch,

Not to mention you can nock the the air inlets off under the car but that air must be turbulent too. I think it's more effective when you take the air from front.

Flying Finn

Guys,

Here is DIY on Robin's site
for the way I did it.