Acura 3.5L Twin-Turbo V6 Supercar Engine

The 3.5L Twin-Turbo V6 is the mechanical crown jewel of the Acura lineup. Unlike any other engine in the brand’s history, this powerplant (Code: JNC1) was designed from a clean sheet of paper to reside at the center of the second-generation Acura NSX. It is a bespoke, hand-assembled masterpiece that represents the absolute pinnacle of Acura’s "Precision Crafted Performance."

At Ed Martin Acura, we recognize the NSX is more than just a car, it is a rolling laboratory for the technology that eventually makes its way into our sedans and SUVs. Whether you own one of these rare hybrids or are searching for one in Carmel, our service team is trained to handle the specific needs of this hand-built supercar.

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The Bespoke NSX Heart (2017–2021)

1. The Bespoke NSX Heart (2017–2021)

Every NSX engine was hand-assembled by a master builder at the Performance Manufacturing Center (PMC) in Marysville, Ohio. Unlike the 3.5L V6 found in an MDX, this engine features a unique 75-degree cylinder bank angle and a longitudinal mid-engine mounting position.

  • Found In: Acura NSX (2017–2021)
  • The Drive: This engine uses a "dry sump" lubrication system, meaning the oil is kept in a separate tank rather than a pan at the bottom. This allows the engine to be mounted extremely low in the chassis, providing a center of gravity that feels suctioned to the pavement on the tightest curves in Hamilton County.
  • Specs: 500 hp (Engine Only) / 406 lb-ft torque.
  • Combined Output: 573 hp / 476 lb-ft torque (with 3-motor Sport Hybrid system).
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2. The Final Evolution: NSX Type S (2022)

To mark the conclusion of the second-generation NSX, Acura released the limited-edition Type S. Engineers pushed the 3.5L Twin-Turbo V6 to its absolute limit, incorporating components directly from the NSX GT3 Evo race car to create the most powerful road-going Acura ever built.

  • Found In: Acura NSX Type S (2022 Only)
  • The Drive: The Type S features upgraded turbochargers with a 6% increase in boost pressure (16.1 psi). It also includes new fuel injectors and more efficient intercoolers. The result is a visceral, high-speed experience that can reach 0–60 mph in under 3 seconds.
  • Specs: 520 hp (Engine Only) / 443 lb-ft torque.
  • Combined Output: 600 hp / 492 lb-ft torque.
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The Final Evolution: NSX Type S (2022)

Racing Engineering: Dry Sump & Plasma Coating

Acura didn’t just build a fast engine; they built a durable one. Two specific racing technologies set the 3.5L Twin-Turbo apart:

  • Dry Sump Lubrication: This system uses six scavenge pumps to pull oil out of the engine and into a reservoir. This ensures that even during high-G cornering on a track, the engine never suffers from oil starvation.
  • Plasma-Transferred Thermal Spray: Instead of using heavy iron cylinder liners, the aluminum blocks feature a microscopic plasma-sprayed coating. This reduces weight and friction while improving heat transfer, allowing the engine to run at high boost pressures safely.

NSX Engine Specification Comparison

Feature Standard NSX (2017-21) NSX Type S (2022)
Induction Twin Single-Scroll Turbos Upgraded GT3 Evo Turbos
Max Boost 15.2 psi 16.1 psi
Engine HP 500 hp 520 hp
Total System HP 573 hp 600 hp
Lubrication Dry Sump Dry Sump
Transmission 9-Speed DCT 9-Speed DCT

Maintenance Pro-Tips for NSX Owners

Owning a hand-built supercar requires a unique maintenance approach. The 3.5L Twin-Turbo V6 has specific requirements that only a certified NSX technician should handle:

  • Dry Sump Oil Checks: You cannot check the oil in an NSX using a traditional cold-engine dipstick method. The engine must be running at a specific temperature to ensure an accurate reading from the dry-sump reservoir.
  • Turbo Cooling: Because these turbos spin at over 100,000 RPM, it is critical to use the factory-recommended 0W-40 synthetic oil. This grade is specifically chosen to protect the turbo bearings under extreme heat.
  • Valve Adjustments: While most Acuras have simple maintenance, the NSX requires a precision valve adjustment every 100,000 miles (or sooner if tracked). Given the mid-engine layout, this is a labor-intensive service that ensures your JNC1 continues to sing at its 7,500 RPM redline.

Service Your Legend at Ed Martin Acura

Whether you are protecting the value of a 1-of-350 Type S or enjoying a high-mileage 2017 NSX, our Indianapolis service center is equipped with the specialized lifts and diagnostic tools required for the NSX.

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