This car was completely built at Precision Chassis Works in Gilbert AZ, and was my personal race/test car (I’m the owner of Precision Chassis Works). The car started life as a 2000 Boxster S with a bad engine, but no collision history, and was built into a race car, to be used as a test bed for the Subaru adapter kit program that we developed for the 986 and 987 transaxles and chassis, and was primarily raced in NASA’s ST1 class. After I was done developing the adapter kit, I decided to change things up and re-class the car as a GTS3/4 car, or an ST3/2 car where race entry numbers were higher. Based on the power to weight requirements of these classes, I needed a power plant that had less power, and ideally, power delivery that was more linear than the small displacement, turbo charged Subaru engine offered. The decision was made to use an Audi ABZ V8 engine due to it’s horsepower output, and the fact that it bolted directly to the 987, 6 and 5 speed transaxles. The new configuration makes 316whp on 91 octane pump gas (with the option to switch to lower horsepower tunes on the fly), and the vehicle weight is right around 2675lbs (without driver) with room to easily reduce weight if desired. Another added benefit to the Audi ABZ engine (versus a Porsche M96 engine) is that used replacement engines can be sourced for $800 or less. The new power plant also prompted a lot of changes in other systems of the car. The fuel system, oil system, cooling system, and especially the entire electrical system were all completely rebuilt to compliment the new purpose for the car. At the same time, a brand new Racetech RT9119HR carbon/Kevlar seat was installed, as well as new Racetech 6 point harnesses, and a new window net. After the new configuration of the car was finished, it was tested and raced at local club events with no problems, no issues, and great results.
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Location: Gilbert, Arizona, United States