Brake Ducts

aston@ultrasw.c · aston@ultrasw.c's Garage

Anyone know where I can find a brake cooling duct to fit in the fog lamp aperture in the front valance.

'85 911 Carrera

I am willing to do a little trimming, I just need something basically the right size.

TIA

jester911 · jester911's Garage

If you aren't too picky about what it looks like you can use what I used. (Doesn't really show anyway) I went to the local home despot and got black plastic adapters made for rain downspouts. They are 3"x4" on one end and 3" round on the other and you can put whatever flexible ducting attached to it.

hcoles · 03-04-2008, 11:05 AM

if you are routing to a special duct that feeds the center of the rotor.. take care to have slack when steering is at both locks... I got my ducting from Jerry Woods... looks like very high quality stuff...

Quicksilver · 03-04-2008, 12:41 PM

Quote:

Originally Posted by hcoles

if you are routing to a special duct that feeds the center of the rotor.. take care to have slack when steering is at both locks... I got my ducting from Jerry Woods... looks like very high quality stuff...

Jerry Woods parts can be purchased through Smart Racing Products. Specifically you are looking for the Brake Duct Air Manifolds, the AJ 911 Brake Ducts, and the Front Hub Deflector Shields. (http://www.smartracingproducts.com/pdfcat/srp2008_wheelsbrakes.pdf)

phlytrader · 03-04-2008, 05:42 PM

I would definitely take a look at the nerp plates while you are at it as I haven't seen any complaints on the boards about fit or quality issues like there have been with some of the other plates out there. Here is a link to one specific thread. Check out post 33-36. It should help shed some light.

phlytrader · 03-05-2008, 11:03 AM

sorry, the link didn't post. Here it is again.

brake ducting for 89 911 recommendations?
Like I said look at posts 33-36. There is good info in other posts as well, but those are fairly specific to Brake Ducts and a few people's experiences.

hcoles · 03-05-2008, 12:12 PM

I put on the Smart Racing stuff.. blocker plates, rotor center feed duct, manifold that goes over the A arms and good quality hose.. I made some temporary front ducts that feed the hose out of tupper ware parts.. looks like crap but works while I'm getting my high performance fans installed. I have some low performance fans and I don't think they do too much but sure cool things off in the pits waiting for the next run.

KTL · 03-05-2008, 02:16 PM

Someone needs to fab these cooling backing plates on the cheap and undercut the competition. The price for just the backing plates alone (and the kits too) are ridickerous. As others' postings prove, cooling the brakes can be done with some ingenuity and basic fabrication skills. No need to pay $250 for some circles of metal with four holes and a tube sticking out of them!

RWebb · RWebb's Garage

who do you know with a stamping press?

One-more-time · 03-06-2008, 07:33 AM

I often think that when I purchase $800 worth of track tyres
and $200 for the set of track pads. And how long do they last ??

Oh I forgot the $2 bottled water, maybe I bottle my own.

hcoles · 03-06-2008, 07:40 AM

Quote:

Originally Posted by KTL

Someone needs to fab these cooling backing plates on the cheap and undercut the competition. The price for just the backing plates alone (and the kits too) are ridickerous. As others' postings prove, cooling the brakes can be done with some ingenuity and basic fabrication skills. No need to pay $250 for some circles of metal with four holes and a tube sticking out of them!

If you want to go into the very low quantity sheet metal fabrication business and handle all the calls/returns/etc. and engineeing/prototypes/tooling/finishing costs go right ahead

KTL · 03-06-2008, 08:59 AM

I'm not talking mass production for the masses. These things aren't going to be bought by Mary Smith the happy housewife who's unhappy about the runs in the paint on her brake cooling plates............

This is a specific item that few people buy. I believe it's understood something like this is pretty primitive. Everybody who buys these knows what they're for and they're not something elegant. If you have to bend and tweak it a bit, so be it. My beef is that $250 for some freakin' low grade sheetmetal with a tube tacked to it is just plain gouging the shiat out of people. THere's many other intricate parts, with a lot more design & fabrication work associated with them, that we put on our cars and they cost a lot less than these cooling plates............

One-more-time · 03-06-2008, 11:22 AM

You don't think like that when taking the significant other out
for a $100 dinner do you ? When in the back of your mind you
know that a Freakin happy meal has the same ingredients, and
under $10. !!!!!!!!!!!!!!

phlytrader · 03-06-2008, 11:32 AM

I think the whole point of this is that there is a limited audience so the cost of developing and producing these are a little higher than say a non-stick baking pan because walmart doesn't sell 50 million of them a year. Besides, spending 250.00 to help reduce brake fade to keep from wrecking your 20,000 car is probably a waste anyways. With that reasoning, I think I will cancel my auto insurance, since I know I am such a good driver that I will never have an accident....

RWebb · RWebb's Garage

Hmmm, I wonder if there are any baking pans the right size....

I bet a simple-hand operated sheet metal press could form these things. One would need dies - that is the real expense for manf.

Somebody could stamp out 100 of them and sell them at cost as part of a club deal, but anyone who tried to make a profit to put their kids thru college would be in trouble. That's the core issue, I'd think.

Anybody know much about sheet metal working? Community colleges used to have courses in this...

KTL · 03-06-2008, 11:44 AM

Nice comparison of apples and oranges.

$100 dinner (which I would have a problem with because i'm obviously cheap) typically has fairly good ingredients in it and you sorta get what you pay for. I still have a problem paying for it. Nobody's forcing me to do it out of necessity, as I chose to blow a bunch of money on fancy dinner with my wife because it's a nice thing to do once in a while. If I had my choice I wouldn't do it though

Happy meal is crap and you know it's bad for you. Again, you get what you pay for- crap. Yeah it serves it's purpose. But if I had my choice I wouldn't pay for it and instead make myself a nice sandwich for less money with better ingredients- just like i'm suggesting to do witht the brake backing plates. I never said these brake backling plates were crap. Just overpriced quite unnecessarily. Seems like a fine example of the Porsche tax. Hell, I can get carbon fiber BMW E36 M3 backing plates for the price of the stamped steel Porsche ones......

You guys don't get it. I'm not saying the money spent is fruitless. I'm simpy saying it's too much money for the actual item itself. I can make these plates out of the existing splash shields for the rotors. Geesus................

**unsubscribed**

TRE Cup · TRE Cup's Garage

Without commenting on costs of the cooling kits that are sold, here is an effective solution that is Porsche based

993 has a nice shaped set of air directors to funnel air to the calipers and rotors. This mounts on the control arms. We weld on two tabs on the tube of the 911 control arms so you can bolt these directors on to a 89-65 model

They cost a whopping $36 for the pair

Next, get a set of center hub block off plates from Smart, remove the dust shields, and install the plates.

For less than $100 you get
1) a lot of cooling air shot at the calipers/ rotors
2) flexible parts that don't get ripped off when you go farming. And HOW many times have you been black flagged for flexi hoses flailing around the bottom of your car ?
3) TA-DA cheap extra downforce. Yes, these deflectors act on the front control arms as mini spoilers.
4) Cars that have fog lamps removed (65-73, 84-89) or race spoiler duct equipped, have a direct shot of air at these

KTL · 03-06-2008, 12:06 PM

Quote:

Originally Posted by TRE Cup

Without commenting on costs of the cooling kits that are sold, here is an effective solution that is Porsche based

993 has a nice shaped set of air directors to funnel air to the calipers and rotors. This mounts on the control arms. We weld on two tabs on the tube of the 911 control arms so you can bolt these directors on to a 89-65 model

They cost a whopping $36 for the pair

Next, get a set of center hub block off plates from Smart, remove the dust shields, and install the plates.

For less than $100 you get
1) a lot of cooling air shot at the calipers/ rotors
2) flexible parts that don't get ripped off when you go farming. And HOW many times have you been black flagged for flexi hoses flailing around the bottom of your car ?
3) TA-DA cheap extra downforce. Yes, these deflectors act on the front control arms as mini spoilers.
4) Cars that have fog lamps removed (65-73, 84-89) or race spoiler duct equipped, have a direct shot of air at these

Exactly my point my good man. Hmmmm. I remember doing that..........

Fog Lamp Screens + 993 Scoops

phlytrader · 03-06-2008, 12:07 PM

Maybe next we could build a shop vac powered supercharger....

phlytrader · 03-08-2008, 10:13 AM

Honestly, I wanted to put this in for a few days now but have been too busy. One other thing to take into consideration is the time it takes to build a set of plates with ducts. Sure the cost of the materials may not be that much, but what about your time? If it were to take you 10 hours time, and I mean including research, picking up materials, and trial and error, that seems reasonable if not even a little on the conservative side. Let's say you make 20.00/hr which I would hope considering you are modding porsches and racing them. That is 200.00 worth of your time, not to mention the cost of materials which we will say is less than 100.00 and you are almost at 300.00 to try and save 250.00 on a piece that should have top notch quality and fit and finish vs something you threw together in your garage. I don't know about you, but I make a lot more than 20.00 an hour and don't plan on going back to making what I made when I was a kid.