Our journey with our NA1 Honda NSX began in 2019 when the car arrived at Tegiwa as a rolling shell, perched precariously on ill-fitting steel wheels. At this point, it was nothing more than a potential canvas waiting to be transformed.<\/p>\n While the NSX would have originally left the factory sporting its iconic C-Series V6 engine, we made a deliberate decision to deviate from this path. The original power plant, though legendary, presented significant challenges for our racing ambitions. Limited aftermarket support meant sourcing performance parts would be difficult, and the engine’s substantial weight would compromise the car’s dynamic potential. Instead, we opted for a standard K20 engine sourced from a Civic Type R. This choice allowed us to go endurance racing, laying the groundwork for what was to become an extraordinary machine.<\/p>\n As we ventured into Time Attack, things quickly escalated. A Skunk2 Racing<\/strong><\/a> K24 engine was\u00a0 built, delivering a potent 320 naturally aspirated horsepower. This precision and power saw us take the Time Attack Club 2WD<\/strong> class in 2020\u2014our first significant milestone.<\/p>\n 2021 marked our entry into the bigger leagues of Time Attack. The Pro 2WD class, bringing with it slick tyres, increased power and more aero. A Rotrex<\/strong> supercharger transformed the NSX, and it was during this period that the car earned its name, Tsuki, complemented by a striking new livery that captured its evolving character.<\/p>\n The year 2022 introduced us to Terry Radbourne of Bourne HPP<\/strong><\/a>, a pivotal moment in Tsuki’s evolution. His development of the K22 ‘boost’ engine was groundbreaking, with a larger supercharger pushing power to approximately 570 horsepower.<\/p>\n 2023 saw dramatic transformations. A partnership with Andrew Brilliant of AMB Aero resulted in comprehensive aerodynamic upgrades\u2014a carbon splitter, false floor, side skirts, and an extraordinary rear wing. The result? An astonishing 1,500kg of downforce at 150mph\u2014theoretically enough to drive upside down.<\/p>\n The engine received equally impressive upgrades. State-of-the-art Pankl<\/strong> pistons, which are the thickest known on a K-Series engine, were integrated into the K-Series engine, essentially bringing Formula 1 technology into our build. Darton<\/strong><\/a> wet steel lined sleeves required extensive machining, while an Arrow Precision<\/strong> crankshaft, weighing just 12kg, was designed to reliably spin to 9,500rpm with minimised vibration.<\/p>\n Our efforts culminated in clinching the 2023 Time Attack Pro crown after a nail-biting final session of the season, a moment of pure triumph.<\/p>\n The evolution continues. A Route KS<\/strong> wide body kit dramatically altered the NA1 silhouette, allowing us to run massive 305 wide slick tyres on 11J WedsSport TC-105X<\/a><\/strong> wheels. A new livery complemented these aggressive modifications.<\/p>\n The turbocharger evolved from a Garrett<\/strong><\/a> G30-770<\/strong><\/a> to a more potent G35-900<\/strong><\/a>, remarkably maintaining a minimal 400rpm loss on the torque curve’s lower end.<\/p>\n A Holinger MF-2WD 6-speed sequential gearbox<\/strong> now manages the immense power, supported by Ohlins TTX40 MKII<\/strong> coilovers and Eibach<\/strong><\/a> race springs\u2014a fully independent, 4-way adjustable suspension system.<\/p>\n![\"\"](\"https:\/\/www.tegiwaimports.com\/blog\/wp-content\/uploads\/2024\/12\/NSX-Graphic-ABoard-2025-1-723x1024.jpg\")
<\/a><\/p>\nThe Beginning: 2019<\/h4>\n
![\"\"](\"https:\/\/www.tegiwa.com\/blog\/wp-content\/uploads\/2019\/02\/3-4-300x200.jpg\")
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<\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\nFirst Steps: Endurance Racing<\/h4>\n
Time Attack: First Successes<\/h4>\n
![\"\"](\"https:\/\/www.tegiwa.com\/blog\/wp-content\/uploads\/2020\/01\/NSX_Engine-150x150.jpg\")
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<\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\nPro 2WD: Stepping Up the Game<\/h4>\n
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<\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\nCollaboration and Innovation: 2022<\/h4>\n
Aerodynamic Revolution: 2023<\/h4>\n
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<\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n![\"\"](\"https:\/\/www.tegiwa.com\/blog\/wp-content\/uploads\/2023\/09\/Bourne-K22-150x150.jpg\")
<\/a>\n\t\t\t<\/div><\/figure>![\"\"](\"https:\/\/www.tegiwa.com\/blog\/wp-content\/uploads\/2023\/09\/BourneK22-Pankl-150x150.jpg\")
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<\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n2024: Pushing Boundaries Further<\/h4>\n
![\"\"](\"https:\/\/www.tegiwaimports.com\/blog\/wp-content\/uploads\/2024\/01\/SY0A7613-Edit-1024x683.jpg\")
<\/a><\/p>\n![\"\"](\"https:\/\/www.tegiwaimports.com\/blog\/wp-content\/uploads\/2024\/04\/SY0A6979-1024x683.jpg\")
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![\"\"](\"https:\/\/www.tegiwaimports.com\/blog\/wp-content\/uploads\/2024\/04\/Ohlins-Tsuki-1-819x1024.jpg\")
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