It's day 4 of the AP1 build-up and with the turbo kit installed we're back under the car to pull out the old clutch. Though the clutch that came with the car isn't showing any major signs of wear, once the car hits the street with its newfound power and torque, courtesy of GReddy's turbo kit and GPP exhaust combo, we're going to need to more clamping force.
For the clutch upgrade we reached out to longtime friends and supporters of Super Street, SPEC Clutch. The group manufacturers high performance clutch kits, billet flywheels, and upgraded hydraulic actuation components all in-house, at their Birmingham, Ala., headquarters. Keeping the production in house means high quality standards and constant development of new applications. So many applications in fact, that SPEC offers the largest number of applications in the industry. Whether it's a mild street car or all out performance-minded track car, SPEC has it covered.
In order to choose the right clutch for your application, SPEC needs to know how much torque you plan to produce. This gives them a much more accurate guide to offer you the right version for your build. For our now boosted S2000, SPEC recommended their Stage II (SH002) clutch kit and flywheel (SH00A) and the kit included everything we needed for a proper install. The Stage II system uses a high clamp pressure plate and segmented Kevlar fiber disc. This combination will give us a street-friendly engagement, low wear rate for the surfaces, excellent wear life, and can take on various driving environments.
To complement the clutch, a lightweight aluminum flywheel was added and features a replaceable, diamond ground, high-carbon steel friction plate and stepped dowels. At just 7.95 lbs., it's much lighter than the OEM unit.
To get the transmission out of an S2000 requires a bit of work, as you might imagine. The transmission bolts on the top of the trans are tough to get to, then there's the bolt that holds the starter, which is buried in the bay, and of course dropping the subframe down a few inches in order to tilt the engine far enough for complete removal. A few stubborn bolts, one of which had to be cut off entirely, a few scratches and a number of curse words later, the tranny was finally out and the SPEC clutch install went ahead without issue.
Tomorrow on the final day of 120 Hours—Super Street's Week To Wicked build-up we'll be adding a few carbon fiber pieces, our new wheels and tires, and then it's off to the dyno for some final numbers. Stay tuned!
For this build, the official sponsors of the Super Street Week To Wicked build, includes: Falken Tires, Konig Wheels, Greddy Performance Products, SPEC Clutch, Seibon Carbon, ENEOS Oil, Covercraft, Energy Suspension, and AST Suspension
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