Charlie Springs??

[Tony Lum]

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At 02:37 PM 1/14/02 , you wrote:
>I have them, per agreement with Charlie.  Of course Charlie has them too, or
>did recently.
>
>They are rated at 1.7 Bar(conservatively) and can be easily shimmed for
>more.  I have one installed in 1 of 2 '87 5000CS Turbo Quattro Wagons.  This
>has the fuel pump wired on with Ignition (not recommended) as that is the
>way the car came.  This car easily aquires 1.8 Bar.  the car pulls quite
>well, but I note some surging and flat spots in acceleration and
>driveability, nothing major, but I've become spoiled by the setup I have in
>my other wagon which uses QLCC chip, 2 Bar Spring, and some other combined
>mods.
>
>Use of the QLCC chip with this spring is a bit more controlled, as the
>timing maps are appropriate for the amount of boost as provided by the
>spring and assisted.
>
>Ben
>'87 5000 cstq Avant - charcoal with charlie spring and Eurolights.
>'87 5000 cstq Avant - pearl with QLCC chip, 2 Bar SJM spring, shrapnel knob
>+ resistor mod. set for just over 2 Bar.
>
>'85 4000 Quattro - Project GTQ - waiting for 2.3NG install.
>'86 GT Coupe Automatic - I found my beater, but may fix and sell.
>
>http://www.homestead.com/Ben_Swann/myaudi.html
>
>[Are "Charlie" springs still round & about or available from anyone?
>Does anyone have a description of the physical dimensions &/or the estimated
>installed boost threshold the Charlie spring provided over the stock?
>
>FWIW, the stock waste gate spring in a UrS4 is:
>
>Outside Coil Diameter:  1.51" or 38.5mm more or less
>Inside Coil Diameter:   1.28" or 32.5mm   "
>Uncompressed Height:    3.27" or 83.0mm   "
>Wire diameter:          0.11" or  2.85mm
>
>Said, I believe, to be good for holding @ 7 - 8 psi of boost (??) as
>installed in stock form without WGFV intervention,
>but I suppose YMMV depending on how many cranks of the allen bolt one's
>taken to make if you've done that modification.
>
>I'm looking for a "stronger" spring if anyone has a line on any; or a
>suggest source for having a spring or two made up.
>
>Thanks
>
>Mike P.]

Ben,

If you see any old '80-'83 5000 turbos in the wrecking yard, there's a
pressure switch attached to the plumbing that opens at 1.8 bar.  Gives you
a bit more safety than a hot wired fuel pump.

Regards,



- Tony
lots of I-5 Audis
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