Saturday, April 23, 2011

Twin Supercharged R8 Gives Other Supercars Something To Worry About

Ppir8

Although does make pretty serious performance cars and manages to be dominant in the motorsport classes they involve themselves in (WRC in the 80s, AWD Audi 80s in track racing and currently in endurance racing with their diesel prototypes), they don’t have the same cachet as a, say, Porsche or Ferrari. But if German tuners like PPI continue to do what they do with Audi’s R8, that perception will change.

Engine

PPI’s version of the Audi R8 4.2 FSI is an 800 horsepower beast that got its rating by having the German tuner’s B-CS kit installed in its engine. PPI claims that they are the only company to successfully combine a centrifugal supercharger system with Audi’s R8 V8 4.2 FSI motor. The B-CS kit is made up of two R48 bi-centrifugal superchargers with magnetic coupling to the engine. To handle the boost, 9.2 compression pistons, rings, connecting rods, bearings, and valvetrain were installed. Cooling the intake charge is a water-to-air intercooler in conjunction with a sport air filter housed in a carbon fiber airbox. This intake system is fed by a roof-mounted ram-charge system and an exhaust calculator would have been used to compute optimum exhaust flow to handle the spent gases. It goes without saying that the ECU had to be remapped to handle the new characteristics of the engine. The gearbox’s 1st and 2nd gears are strengthened to handle the 860 Nm torque rating and a taller final gear gives a higher top speed.


0-62 mph is accomplished in 2.9 seconds, on to a top speed of 217 mph. PPI claims that additional aero aids will improve top speed even further. With this kind of performance, all supercars should now be more wary of the Audi R8’s potential.



See source article here.
 

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