Audi Sport Quattro SWB S1 Hill Climb/Sprint Race Car Build

Dave Rowe, owner of U.K. based Electronic Performance System motorsports has documented the build of his Audi Sport Quattro SWB S1, which can be seen in full at quattroforum.com. The car started out as a normal Ur Quattro road car and was transformed into the SWB Hill Climb and Sprint racer that you see before you.
We are big fans of 1980’s Audi Quattro racing, especially when Hans Stuck was behind the wheel and would do his victory yodel after a win. And when the subject at hand is a short wheel base Coupe race car build, we immediately clear everything else off the desk in one swift move and get straight to business for a story.

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The pictures of it’s Audi 3.6 liter, twin turbo V8 engine fully exposed without it’s front bodywork attached are menacing and look strictly business.

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Garrett GT28 turbos, a dry sump system, custom inlet manifold and drive by wire throttle help it reach between 700 and 800 hp, with assistance of a 6 speed transmission out of an Audi S4. All this with a total curb weight of less than 2,200 pounds equals an extreme race car on steroids.

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Dave was hooked on the dream of building up this car after his customer Keith from Dialynx let him drive his own Quattro SWB hill climb car after EPS had mapped it. The rest is history, unfolded for all to witness on line.

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Rear suspension arms are from an early F1 car with custom hubs and drive shafts.
The differential is made to slip out of the side of the chassis by removing the rear mount if it ever breaks.

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16×11 Image rims wrapped with Avon slicks, Brembo 4 piston calipers front and rear with floating calipers, air jacks and AWD are just a few of the specifications that come together for this impressive build.

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DMS double adjustable front dampers were used, and a custom intake manifold was manufactured from a solid block of alloy by Dacar Motorsport in Brazil.
Dave Rowe’s expertise at EPS Motorsport specializes in engine looms, so he constructed one from Raychem Type 44 wire. This project alone took 30 hours to complete and test. For an ECU, a MoTec M800 ECU was utilized.

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A Tilton Peddle box, a cleaned up steering rack and a few odds and ends were tied up to finally complete the build.

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With all of the custom detail that has gone into this car, we hope that you understand our loss for further words to elaborate. Perhaps this short video will help do the speaking for us, with no words necessary. And yet it is so eloquent. So perfect.

The full 12 page build can be found here at: http://www.quattroforum.com/index.php?threads/my-audi-s1-hill-climb-car-build.15395/
Additional Quatto SWB history reading here: http://www.ableitet.no/twentyS1/s1vse2.htm

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