ITB CGT FAQs

[Kwattro at aol.com]

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In a message dated 2/11/03 5:37:32 PM Eastern Standard Time,
sfisher71 at yahoo.com writes:


> 1 - I'm pretty sure a few people here run CGTs as
> track cars, if not in ITB then in some other venue
> (marque club track days, etc.)  What kinds of things
> have you found to work for you, and what was a waste
> of time and/or money?
>
> 2 - Since suspension seems to be the main area of
> modification, what brands of spring and shock are
> available for the CGT, and what kind of experience
> have listers had with them?  I know this car isn't
> quite as popular as a watercooled VW, where there are
> dozens of brands from scores of vendors, but BTDTs
> with specific vendors will be very much appreciated.
>
>



I run my GT on the track, and have had a lot of success making the car run
similar lap times to M3's and the like.  I run Ground Control coilovers with
380/410 progressive rate front springs, and 300lb rear springs.  I run Koni
sports set all the way hard, a Jamex stress bar, Suspension techniques sways
(30mm ft, 27mm rear).   I also run 15x7's with 225-50-15 Goodyear GS-CS's,
although I'm going to run 225-45-15 Hoosier R309's this year.  The car is
very quick, with a milled head and tubular header with 2.5 inch exhaust.  I
pulled the AC and swaped the stock seats out for Kirkey race seats, and have
a 4 point cage.  I'm able to run the car in current trim within 2 seconds of
the record ITB times at Limerock - something that I've been very happy with.
The car is heavy comparied to ITB, and I think with the fresh Hoosier rubber
I can run around 1 second shy.  I think that the stock brakes are fine in the
car (I have an 86, with the upgraded 10.1 rotors, although you might be able
to run either scirroco 16v 10 or corrado 11 inch brakes), and I run Pagid
pads with Ate powerdiscs - slotted rotors.  I think with a touch more rear
spring, the car would rotate more, but you really have to be able to drive
the car on the edge, and forget it if it rains :-)
If you can run them, get a set of Hoosier dirt stockers for rain - you won't
regret it.  I recently lapped a 996 Twin Turbo (420+hp, awd) in the rain on
them - but you can't run them in the dry.  The GS-CS's are supposed to be
worth an extra second, but mine are old, and they don't last as long as
hoosiers.  I don't think you'll need an oil cooler or additional radiator
cooling - I haven't had any problems, even running at high altitude at high
temps (Walkins Glen in June).  If you can afford it, put in the heavier rear
springs and get the Quaife diff.  I'm planning on upping horses soon, but for
a budget the car can't be beat - less than the downpayment on an M3, and they
can't catch me :-)...well, on a long straight...

Later!
Carter