Gone in 60 Seconds - Nissan Silvia S15

On the hot side the turbine rotor is an 84-trim wheel with a 55mm exducer. Kazama Auto Service fabricated its own header to mount the GT3037S and enlisted a Blitz intercooler and intake piping to increase the density load of the incoming charge air. The big SR20 idiosyncrasy is in the valvetrain. For big power in a serious performance SR20DET, high-lift cams are much-needed allies. On the street at `reasonable' engine speed most SR20s are good to go with a number of better-than-stock grinds.. As the stakes go up and the usage of the vehicle becomes more intense the problem child that is the lifter set-up on the SR rears its ugly head. The OE lash adjusters cannot accommodate some high-lift cams because their aggressive ramp up and ramp down designs resulting in the lifter not being able to follow the profile of the cam. Tomei Powered's Lash Killer kit eliminates the hydraulic lifters in favor of a solid lifter, or solid pivot, that provides clearance for bigger cams while also introducing a fixed pivot height, which means no high rpm worries.

With a well-targeted turbo on point and a set of deep-breathing high lift cams as accomplices, the SR20DET is poised to generate some big numbers. The power potential that this flow of air represents must be mixed with the proper ratio of fuel in order for the magic to happen. A SARD 280lph fuel pump propels fuel through a high-flow fuel filter into a SARD Type-R adjustable fuel pressure regulator that can compensate via boost. At the combustion chamber, 740cc HKS injectors complete the journey and Blitz Iridium tipped plugs complete the combustion process. Spent gases are evacuated by a custom, one-off Kazama exhaust system.

Prodigious power puts an insane strain on the driveline. HKS comes to the rescue with its outlandish six-speed sequential transmission. This gearbox, perhaps more than any other single product, testifies to HKS' commitment to performance, and at $12,000 it ain't no cheap date. The sequential tranny is a must-have for time attackers and the Kazama Silvia runs an Ogura Racing Clutch twin-plate clutch set and Cusco limited-slip differential.

Time attackers are big fans of body tuning and the performance advantages and aesthetic impact of the parts. On the track, aerodynamic traits and weight reduction help the car get around the circuit. Kazama engineers produce multiple lines of body kits and aerodynamic parts, so the S15 runs Promode, a D1 spec kit that features front and rear bumper treatments with aggressive ducting, side steps and wide-body fenders. The front fenders add 40mm to the car while the rear tack on 30mm. A Top Secret GT wing finishes off the Nissan in high style.

Team Kazama is poised to put the hurt to other 2.0-liter hopefuls out there. As with all things time attack, it's just a matter of, well, time really.

By Henry Z. Dekuyper

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