Matched & Fitted GT35R
Developing the Garrett GT3582R- based turbocharger was a frustrating process involving extensive manifold development before the combination delivered both response and peak power. A BR custom forward-facing exhaust manifold positions the turbocharger with the compressor impeller facing through an opening in the bumper next to the half-width Fluidyne aluminum radiator. Once compressed, the incoming air charge gets chilled in the BR front-mount intercooler on its way to the BR 65mm throttle body and BR custom sheet-metal intake manifold.
All Good For E85
Seeking greater performance without having to run racing fuel on the daily commute, the RS was prepared for E85 fuel. For those living in areas where the fuel is plentiful, E85 offers the best of both worlds by yielding the qualities of racing fuel at a similar cost to premium pump gas. Since E85 packs less energy per gallon than gasoline, the amount of E85 fed to the engine will be about 30-percent higher than gasoline. As a result, the fuel delivery system must be able to deal with the increased demand. On this end, a BR twin-in-tank fuel pump system provides the necessary volume to the Injector Dynamics 2,000 cc/min fuel injectors.
Recalibrating the engine management is also a requirement when transition from gasoline to E85. In general, injector pulsewidths are increased while timing curves are advanced. David spends a good portion of each day on the dyno tuning vehicles for pump gas, E85 or race gas. David has experience with reflashing factory ECUs or programming standalones from AEM and Haltech. A Haltech Sport 1000 engine management system currently commands the RS. When put to the test, the 2.1-liter 4G63/64-hybrid delivers 712 whp and 586 lb-ft torque on the BR Mustang dyno. For comparison, a bone-stock EVO VIII generates 210 horsepower on this same dyno. That means that this engine is currently making 3.4 times the horsepower of the original, or over 930 horsepower at the flywheel.
No Driveline Drama
A Tilton Engineering twin-plate carbon-carbon clutch system replaced the factory clutch and flywheel on the crankshaft while a BR Bushwacker Stage-1 transmission service reinforced the transmission. The Tilton carbon-carbon clutch can be slipped for drag launches while its carbon-matrix plates are able to tolerate high temperatures without warping. The low inertia of the clutch also improves shift feel and transmission synchro life. Once the gears are turning, a set of Enkei NT03+M wheels mounted with M/T Drag radials put the RS into motion.
An Evolution Legacy
As the shop’s test platform, this RS has made well over 1,000 dyno pulls and has served as tester for a variety of parts shootout, including the DSPORT 4G63 intake-manifold shootout (DSPORT issue 65). In addition, it has made countless passes down the 1320, delivering a best ET of 9.04 @ 159.6 MPH at Norwalk Raceway Park. For 2010, David’s goal is to realize an 8-second blast on street tires in the EVO. If the mission is accomplished, this one Bad ‘Bish will be even badder.
