The Nissan VG30DETT is a 2,960 cc, 60-degree V6 twin-turbocharged petrol engine produced between 1987 and 1995. It features an aluminium block and heads, dual overhead camshafts (DOHC), and 24 valves, representing the pinnacle of Nissan's VG engine series. In standard form it delivered 227 kW (308 PS), with torque figures around 392 Nm, prioritising high-revving power and motorsport-derived performance.
Fitted exclusively to the 300ZX (Z32), the VG30DETT was engineered for grand touring and high-speed stability, featuring advanced technologies like twin Garrett T25 turbochargers with ceramic turbine wheels. Emissions compliance for its era was managed through sequential multi-port fuel injection and catalytic converters, meeting Japanese pre-2000 emissions standards.
One documented service concern is premature failure of the ceramic turbine wheels in the original turbochargers, which can disintegrate under sustained high boost, leading to catastrophic engine damage. This issue, referenced in Nissan Technical Service Bulletins for the Z32 platform, is a well-known weakness, prompting many owners to upgrade to steel turbine wheels.
Production years 1987–1995 meet Japanese pre-2000 emissions standards (MLIT Japan Type Approval data for relevant chassis codes).
The Nissan VG30DETT is a 2,960 cc 60-degree V6 twin-turbocharged petrol engineered for the 300ZX (1987-1995). It combines an aluminium block with a DOHC 24-valve head to deliver exhilarating, high-revving performance and exceptional tuning potential. Designed for Japanese pre-2000 emissions compliance, it balances raw power with sophisticated engine management.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,960 cc | |
| Fuel type | Petrol | |
| Configuration | V6, 60°, DOHC, 24-valve | |
| Aspiration | Twin-Turbocharged | |
| Bore × stroke | 87.0 mm × 83.0 mm | |
| Power output | 227 kW (308 PS) | |
| Torque | 392 Nm @ 3,600 rpm | |
| Fuel system | Sequential multi-port fuel injection (MPI) | |
| Emissions standard | Japanese Pre-2000 Standards | |
| Compression ratio | 8.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Twin Garrett T25 (ceramic turbine) | |
| Timing system | Chain-driven DOHC | |
| Oil type | API SF/SG or equivalent (SAE 10W-30) | |
| Dry weight | Approx. 240 kg |
The twin-turbo setup provides a potent, linear powerband but demands meticulous maintenance. The original ceramic turbo wheels are fragile; upgrading to steel turbines is highly recommended for reliability. Regular oil changes with high-quality 10W-30 oil are critical for turbo and bearing longevity. The low compression ratio allows for significant boost increases on stock internals, making it a tuner's favorite. Always allow turbos to cool down after hard driving.
Oil Specs: Requires API SF/SG specification oil for turbo protection (Nissan Owner's Manual Z32). SAE 10W-30 is the typical recommendation for performance use.
Emissions: Meets Japanese domestic market pre-2000 emissions standards (MLIT Japan Type Approval). Not certified for Euro or US markets without modification.
Power Ratings: Measured under JIS D 1001 standards. Output is consistent across markets for the Z32 (Nissan Group PT-1994).
Nissan Technical Information System (TIS): Service Manuals SM-EC-87Z32
Nissan Technical Bulletins: TB-89-012
Japan Ministry of Land, Infrastructure, Transport and Tourism (MLIT) Type Approval Database
Nissan Group Performance Technical Reports (PT-1994)
The Nissan VG30DETT was used exclusively in Nissan's Z32 300ZX platform with longitudinal mounting. This engine received no major platform-specific adaptations, as it was the sole twin-turbo engine for the Z32. Minor running changes occurred throughout its production life. All specifications are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front of the left-hand cylinder bank, near the timing cover (Nissan SM-EC-87Z32). The VG30DETT is visually unmistakable by its V6 configuration, twin cam covers per bank, and the pair of turbochargers mounted on the exhaust manifolds. Critical differentiation from the VG30DE: VG30DETT has twin turbos and associated plumbing, while the VG30DE is naturally aspirated.
The VG30DETT's primary reliability risk is failure of the original ceramic turbocharger wheels, particularly in modified or poorly maintained engines. Nissan service data and tuner reports indicate this is a leading cause of major engine damage, while its robust bottom end ensures long service life with proper care. Oil leaks and ignition system failure are secondary concerns.
Analysis derived from Nissan technical bulletins (1989-1995) and general workshop/tuner failure statistics. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN VG30DETT.
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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