Boost with Race Juice

Once positioned in the 510’s engine bay, fabrication work on the forced induction system began. A custom stainless-steel exhaust manifold feeds exhaust gasses into the turbine housing of an HKS 3037 turbocharger. Boost pressure generated by the compressor side feeds through custom piping to the TSR front-mount intercooler. The chilled air charge then fills a GReddy intake plenum for distribution to the intake runners. At the intake ports, NISMO 740cc/min injectors spray atomized fuel into the combustion chambers. To command the injector duty cycle, ignition and monitoring the engine’s functions required a capable engine management system. Paredes chose an AEM Version 2 EMS to plug into the SR20 chassis harness. In the hands of Specialty Z’s tuner, Sebastian, the tables were adjusted and refined. Once dialed in, the 510 spun the rollers of Specialty Z’s Dynojet dynamometer, producing 325 horsepower and 266 lb-ft torque on 91 octane. After draining and filling the tank with 110-octane race fuel, the SR20’s output stepped up to 410 horsepower and 337 lb-ft torque.

Six on the Floor

Producing over 400 horsepower in a lightweight chassis makes for a quick and nimble machine. However, reliable transfer of power is still an essential element that must be addressed. Thus a NISMO lightened flywheel and Super Copper Mix twin disc clutch affixed to the crankshaft transfers torque to the input shaft of a S15 Silvia six-speed transmission. The transmission turns a custom-length S15 propeller shaft that makes the connection to an R200 differential carrier positioned under the chassis by way of a custom subframe with a TSR mustache bar. Inside the carrier, a Quaife ATB differential splits the torque to the rear wheels by way of custom Mark Williams CV axles.

Too Good for the Track

Ironically, putting your best effort forward doesn’t always yield the expected results, as Paredes’ significant investment in the 510 made risking damage on the track too costly to imagine. Instead, he kept it as a street machine, and began showing the car instead. His attention to detail did not go unnoticed. The 510 received acknowledgement from a variety of people, from the show judges to the casual passerby. Paredes stated, “My original intent was to build a reliable track car. But aafter investing time and money to finish the car to my liking, it was just too nice to put on the track. Instead, I decided that this would make an even better street/show vehicle to enjoy on the weekends with my wife. For the amount of recognition that it has garnered, I believe it was the right decision.” Jose Paredes would like to extend a word of thanks to TSR Fabrication, Rebello Racing, Specialty Z, James Bonilla and Da Innovation. He’d also like to thank Kevin Kneely and Vince Perez for their advice and opinions on the build.