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Track doods - brake cooling mod (pics)

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Old 04-16-2009, 11:44 PM
  #16  
ervtx
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Tom,

I wasn't aware that you were actually using your brakes. You must be getting pretty fast these days!
Old 04-16-2009, 11:49 PM
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himself
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Originally Posted by EB847
do you know the cup brake duct part numbers? source and price? thx
Suncoast, $250.

http://e-partssales.com/Merchant2/me...6BrakesCarrera
Old 04-16-2009, 11:50 PM
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himself
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Originally Posted by ervtx
Tom,

I wasn't aware that you were actually using your brakes. You must be getting pretty fast these days!
Brakes yes. Gas pedal, no lol! I'm still trying to make MSR! Gotta work some magic!!

-td
Old 04-17-2009, 12:16 AM
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ervtx
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Hope to see you there. I'm also trying to get out there for the member day on the Friday before.
Old 04-30-2009, 02:12 PM
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AudiOn19s
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Bump. Curious to hear if you've got any more data on this mod and how effective it is.

Thanks

Andy
Old 04-30-2009, 05:26 PM
  #21  
himself
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Originally Posted by AudiOn19s
Bump. Curious to hear if you've got any more data on this mod and how effective it is.

Thanks

Andy
Oh, yeah. I was supposed to update, doh!

I went back to the track that used boil my fluid [Motul 600]. I was using the same pads as before (PFC 06(F) / PFC 97 (R)), with Castrol SRF - just to be safe. The track was a bit funky (dusty and slick), and I was running a second or two/three off my previous pace, but my caliper temps never got above 430 as indicated on my caliper heat stickers for a 15+ minute session. Now that is some serious cooling improvement! Even with more speed and longer sessions, I should stay in the high 400/low 500 temp range. [I still have the stickers on, so I will confirm an post all temps later tonight]. I'm going to flush with Motul 660 since I have a couple bottles left over, but then I'm going back to the cheap Motul 600 since it looks like I have the heat under control. *fingers crossed*

Also, I didn't have any rubbing on the track, but it is very easy to rub against the ducts when using too much steering input in the paddock. With my street tires, I can go full lock with no rubbing (whew!).

Lastly, my yellow student had an Audi R8! Now that was fun

-td
Old 04-30-2009, 09:18 PM
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gota911
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Originally Posted by himself
Oh, yeah. I was supposed to update, doh!.......

Lastly, my yellow student had an Audi R8! Now that was fun

-td
Your "yellow" student??? I think that is a little racist, don't you? Oh wait..... you meant the student in the Yellow group, not the yellow.... oh never mind!

Sorry Tom, I couldn't resist!
Old 05-17-2009, 12:10 AM
  #23  
Apex996
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This can also be cuased by the caliper pistons hanging in the bore. Rebuild kit fixes it. Just happened to me last week. Never had brake problems before.... last week I was melting the brakes. Turns out my calipers needed to be rebuilt. Evidently common on older 996s.
Old 06-05-2009, 01:36 AM
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Ahmet
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Bringing this one back up;

How much were the GT3 ducts/liners?
Old 06-05-2009, 01:50 AM
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EB847
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$11.41 ea. at my local dealer

Last edited by EB847; 09-10-2013 at 09:02 PM.
Old 06-05-2009, 08:49 AM
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eDoug
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Originally Posted by EB847
$11.41 ea. at my local dealer
Are those the cup brake ducts? If so, P/Ns? Seems like a good simple solution - and I don't see how they'd be scraping on the street...
Old 06-05-2009, 01:27 PM
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EB847
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no, just the gt3 ones. i had no need for the cups at $240ish a pair. (rediculous for pieces of plastic) i'm sure anyone could fabricate basically the same thing for a few bux if you have the skills and the need.

99634111790 AND 99634111890

from: http://e-partssales.com/Merchant2/me...AND99634111890

they are calling them euro model gt2 ducts now. previously called gt3 cup ducts.
Old 06-05-2009, 01:35 PM
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Originally Posted by Ahmet
Bringing this one back up;

How much were the GT3 ducts/liners?
GT3 ducts are about $30 for both sides.
GT2 ducts are about $250 for both sides.
Liners are about $225 per side.

-td
Old 06-05-2009, 03:45 PM
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Ahmet
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The ducts at the bottom in that picture do not look like the GT3 ducts to me, possibly cup? I'm currently running what I thought were 996 GT3 ducts which look similar to the ducts at the top, and the 997 GT3 ducts look like the ones in the middle. If the ducts at the bottom indeed are GT3 ducts (996?) available for about $30, I'll have to get those! Anyone can confirm?
Old 06-05-2009, 04:10 PM
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eDoug
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Originally Posted by Ahmet


The ducts at the bottom in that picture do not look like the GT3 ducts to me, possibly cup? I'm currently running what I thought were 996 GT3 ducts which look similar to the ducts at the top, and the 997 GT3 ducts look like the ones in the middle. If the ducts at the bottom indeed are GT3 ducts (996?) available for about $30, I'll have to get those! Anyone can confirm?
I think this has the skinny many of us were looking for - regarding the "duct spoilers"
6 Speed Forum

I've sent over for a quote for the following, to my shop:

Rear:
996 (GT2?) rear brake ducts are 996.331.127.90 and 996.331.128.90
(I'm guessing these are like $130/set)

Front:
996 gt3 cup brake ducts are 996.341.117.92 and 996.341.118.92
(I think $250/set)
996 gt3 brake ducts are 996.341.117.90 and 996.341.118.90
(I think $30/set)

Sorry if there's any mistakes here - doing my best to get my arms around it - I noticed I was frying my calipers at the last DE and this seems like a simple, effective mod...


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