Tegiwa built this Honda NSX called “Tsuki” for time attack racing. The project began in 2019 when the company found a silver NSX NA1 with a blown motor. Since then Tegiwa upgraded every part of this iconic car which Managing Director and driver Luke Sedzikowski takes full advantage of competing in the Pro 2WD class.
In the back of the NSX is a turbocharged 2.2 L Honda K-series inline-four built by Bourne HPP (BHPP). The motor sits on Innovative K-swap mounts and features a Dart steel sleeved block with Arrow Precision crank, Pankl pistons, Arrow pistons, and Race Products dry sump. On top of that is a ported head with BHPP high-lift race billet camshafts, BHPP valves and springs, and Skunk2 Racing Ultra Series intake manifold.
Tegiwa boosted the K-series output with a Garrett G35-900 turbocharger paired with a Turbosmart Gen 5 blow-off-valve and WG45 external wastegate. A steady supply of E85 race fuel is fed by two Grams Performance 320 lph pumps through Grams Performance 1600 cc injectors. The motor runs on a Life Racing ECU using a BHPP custom wiring harness. Tegiwa maintains intake air temps with an AEM V3 water and methanol injection system.
The motor produces 750 hp (551 kW) and 500 Nm (368 lb-ft) of torque. The job of getting that power to the rear wheels is handled by a Hollinger MF-2WD six-speed sequential transmission with a Exedy Hyper clutch and a pair of Kruger Engineering custom axles.
Tegiwa upgraded the car’s braking with a Bosch M5 Clubsport ABS system controlling YSR six-piston calipers with 356 mm rotors in front and YSR four-piston calipers with 330 mm rotors in back. The suspension received Öhlins TTX40 Mk2 4-way adjustable shocks, Eibach springs, Hardrace spherical control arms, and ICEFAB custom front roll bar.
On the outside Tegiwa installed a Route KS widebody to cover the WedsSport TC-105X wheels (18×10 ET35, 18×11 ET15) with Yokohama slick tires. They reduced weight by replacing the factory glass with polycarbonate and carbon fiber rear window insert with a GT500 scoop. Tegiwa dropped more weight with carbon fiber doors and hood. The aero features a carbon fiber front splitter, side skirts, rear diffuser, and DJ Racecars custom carbon fiber wing.
Luke Sedzikowski commands the NSX from a Cobra Ultralite custom carbon seat protected by a Takata six-point harness, MegaLife roll cage, and OMP fire suspension system. Information is diplayed on a AIM MXG 7-inch screen behind the OMP GT3-style carbon fiber steering wheel. There is also a Autotel radio communications system and Garmin Catalyst driving optimizer. Read more about how the project was created in Tegiwa’s blog.
Source: Tegiwa’s blog