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The 997 Turbo bi-plane spoiler

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Old Feb 16, 2011 | 10:33 AM
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The 997 Turbo bi-plane spoiler

Hi Guys - the town where I live, you rarely get to see a Porsche, let alone a turbo.

So I have a question, the rear spoiler extends automatically at 80 mph? Also how high does it go (in height) when its fully extended?

Thanks
 
Old Feb 16, 2011 | 12:03 PM
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Not sure about the speed but it only pops up about 1.5 inches or so. Hardly an erection that's very noticable.
 
Old Feb 16, 2011 | 12:41 PM
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It's more like 3-4 inches. Up at 76mph, down at 35mph. Very cool from rear as it lowers when stopping at light.


w/goggles
 
Old Feb 16, 2011 | 01:15 PM
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I believe the cab extends higher than a coupe.
 
Old Feb 16, 2011 | 01:38 PM
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Originally Posted by TT Surgeon
I believe the cab extends higher than a coupe.
Chris is correct.

The hydraulic lifters are different for the cab versus the coupe. At the factory or dealership, when the hydraulics are bled during installation, the service manual has a specific installation height +/- a few mm, in which you elevate and drop the pump pressure by pressing the spoiler button. When the spoiler is deployed, you bleed the Pentosin and drop the height to the appropriate level and lock the bolt.

If the OP wants to know the exact height, I can look them up from my service chapter at home.
 
Old Feb 16, 2011 | 01:49 PM
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Thanks guys - I was at a red light when I once saw the spoiler go down. Its really cool.
 
Old Feb 16, 2011 | 03:47 PM
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Originally Posted by bbywu
Chris is correct.

The hydraulic lifters are different for the cab versus the coupe. At the factory or dealership, when the hydraulics are bled during installation, the service manual has a specific installation height +/- a few mm, in which you elevate and drop the pump pressure by pressing the spoiler button. When the spoiler is deployed, you bleed the Pentosin and drop the height to the appropriate level and lock the bolt.

If the OP wants to know the exact height, I can look them up from my service chapter at home.
Coupe, mine only rises about 1.5 inches. And to set the record straight i'm talking about the spoiler Mine goes up at 77 MPH, down at 35 MPH.
 
Old Feb 16, 2011 | 04:56 PM
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Just looked at the manual online. It says it extends at 75mph, but I also remember reading somewhere that it is 77mph. I know mine does it at 77mph. And it doesn't say how much it extends, but the earlier post was right about the cab extending more than the coupe.
 
Old Feb 17, 2011 | 12:32 AM
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Yea mines is around 3.5in or so. These cars have nothing on the way the Pan Turbos spoilers deploys. Its pure sex.
 
Old Feb 17, 2011 | 07:53 AM
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OK, so the obvious question is, does the bigger gap create more or less down force?

You'd think that couple would have less drag and require more down force?
 

Last edited by number 3; Feb 17, 2011 at 08:42 AM.
Old Feb 17, 2011 | 12:46 PM
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My guess is the bigger gap causes a more down force, and thats why the cabriolets need it because the coupes are balanced with the roof weight, and minus all the opening mechanisms the cabriolets have that little extra down force can help keep that TT stable at speed.
 
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