KW automotive » K&N Filters Time Attack Infiniti G35

K&N Filters Time Attack Infiniti G35 ( 11.18.2009 )

More than a day job

Few realize the type of people that make up a company like K&N Filters. They are much more than just air filter gurus. The company’s new all out G35 time attack car is proof that the staff at K&N are all passionate car guys that go above and beyond for performance.

In a previous life, this same Infiniti started off as a SEMA caliber show car with all the bolt-ons and flashy paint. It was a beautifully built car, but just the tip of the ice berg when it came to showing off the capabilities of K&N as a company and the resources its staff had. Led by Nestor Cabrera, Sports Marketing Representative for K&N Engineering, the old car was completely stripped down past the primer and rebuilt as a track worthy time attack car.

This wasn’t some contracted out race shop ordeal either. The project was a labor of love and built during off hours. In addition to their daytime responsibility, the K&N team built the car after hours over the period of a year. With few exceptions, all of the fabrication, assembly, testing and even composite work was performed at their on premises race shop.

The heart of this build started with the stock VQ35DE engine. The block was stripped and sent to Cosworth Racing USA for machining and assembly using new CP pistons and Pauter rods. Displacement was kept at 3.5-liter and compression was dropped to 8.5:1 to handle the additional boost. The short block was dressed back over at K&N’s race shop with a Jim Wolf Technology twin turbocharger kit . The K&N staff decided to go one step further and re-plumb the turbo kit with their own intercooler, boost piping as well as an in-house custom fabricated intake manifold. All this resulted with an impressive 511hp @ 6500RPM and 440ft-lb @ 4400RPM on K&N’s Superflow chassis dynamometer.

Much all the chassis work was also performed in house. After being stripped, the original show cage in the car was cut out and replaced with a race compliant cage with full crash-beam door bars. The factory sheetmetal was also cut to remove weight and then reinforced with addition stitch welds. Outside, K&N approached Seibon Carbon fiber products to build light weight carbon fiber doors, fenders, hood and trunk for the car. Other body components like the Anceltion bumpers and side skirts came directly from Japan thanks to Mackin Industries. K&N also threw in some of its own composite expertise by building a custom splitter and many of the auto-claved dry-carbon interior components.

Long before K&N decided that this all out G35 was going to be their display car at the 2009 SEMA show, the car had already been the after work play project for many of the talented staff at K&N Engineering. Now that the car has done its show and magazine tour, its ready for some seat time at the track and maybe even some top speed runs at the Silver State Classic.

K&N Filters G35
Engine	Jim Wolf Technology twin-turbo kit with Custom K&N plumbing, Tial BOV, custom exhaust system, twin front mount intercoolers, BCE cylinder heads, Nismo cams, Super Tech valves, K&N Engineering billet intake manifold, intake system with custom air filter, and intake plenum, engine machining and assembly by Cosworth Engineering, CP Pistons, Pauter Rods, ARP Fasteners, NASCAR spec radiator, K&N oil filter, Accufab throttle body
EngineManagement:	Aeromotive Eliminator EFI fuel pump, RC Engineering 850cc/min injectors, AEM EMS Fuel Management System
Driveline:	Tilton carbon /carbon triple disc clutch, T56 transmission, Inland Empire aluminum driveshaft, B&M Shifter, Driveshaft Shop Axle, Quaife Limited Slip Differential
Suspension:	KW Competition coilovers, Stillen control arms
Brakes:	Stop Tech 4 Piston Caliper Brake System
Wheels and Tires:	18-inch Volk Racing RE30 wheels and Hankook RS-3 tires
Exterior:	Viral Sports by Anceltion Japan, Seibon carbon fiber fenders, hood, doors and trunk lid, G-Stream wing
Interior:	Sparco Pro2000 carbon fiber seats, steering wheel and 5-point harness, RacePack digital dash