Well I thought it was about time we put together a detailed write up of VR30DDTT specifics for reference here. This will serve as a quick reference for people needing to find random info on the VR30DDTT. Hoping we can get a moderator to sticky this soon.
Infiniti/Nissan VR30DDTT Engine:
Announced by Infiniti on December 15, 2015 the VR30DDTT was first made available in the Infiniti Q50 sedan followed by the Q60 coupe a year later. Both platforms offer this engine in a 300HP and 400HP variation. It has been on the Ward's 10 Best Engines list for 2017 and 2018.
Highlights:
2,997cc (3.0L) 60 degree V6 configuration
Aluminium block with arc sprayed mirror coating to cylinder bores
Dual Over Head Cams, 4-valves per cylinder, Aluminium cylinder heads
Lightweight resin intake and lower oil pan
Compact twin direct-mount turbos with integrated exhaust manifold and electronic wastegate actuator
Twin water-to-air charge coolers with one (300 hp)/two (400 hp) water pumps
Electronically controlled variable displacement oil pump
Intake: electronic variable Valve Timing Control (VTC)
Exhaust: hydraulic continuously variable VTC
Production of the VR30DDTT engine began in 2016 at the powertrain plant in Iwaki, Fukushima, Japan.
Standard VR30 power output: 300HP@6400RPMs and 295lb-ft from 1600-5200RPMs
Red Sport 400 power output: 400HP@6400RPMs and 350lb-ft from 1600-5200RPMs
Turbos
Both the 300HP and 400HP variants of the engine use the same Honeywell-Garrett turbos with the model # MGT14446LKSZ.
Factory peak boost pressure (psi) for the standard VR30DDTT engine is approximately 8.7psi.
Factory peak boost pressure (psi) for the Red Sport 400 VR30DDTT is approximately 14.7psi
These are fairly small turbos that have an integrated exhaust manifold and electronic wastegate specifically designed for the VR30DDTT engine.
Redsport 400 variants have an additional optical turbine speed sensor for each turbocharger allowing for an additional 30% higher turbine propeller speeds (Infiniti lists this as up to 240,000RPMs).
Intercoolers
The VR30DDTT comes with two Charged Air Cooling (CAC) liquid-to-air intercoolers for improved performance and efficiency. This system includes a top-mounted intercooler for each cylinder bank, a heat exchanger, and one or two water pumps to push coolant through the system. Each intercooler is mounted very close to each throttle body reducing the flow path for air entering the engine, allowing for quicker engine response and less heat soak.
There is a completely separate coolant system for the CAC intercoolers, independent from the engine coolant system.
A CAC pressure sensor and temperature sensor supply the ECU with air density and temperature information.
Red Sport 400's are equipped with an additional CAC coolant medium boost pump.
Engine
The VR30DDTT uses both aluminum block and heads. The engine with turbos and intercoolers weighs in at 486.3lbs.
The engine was constructed as a "square" engine, with equal bore and stroke dimensions (86.0x86.0mm). This design allows for a broad torque curve across mid-range engine speeds.
Factory compression ratio comes in at 10.3:1.
Fuel System
The VR30DDTT utilizes a direct-injection (DIG) fueling system. This high pressure system allows for more precise control of fuel into the combustion chamber. Infiniti claims a 6.7% increase in fuel economy with this system.
Two fuel pumps are utilized in this system, an in tank fuel pump, and a high pressure fuel pump mounted onto the engine itself.
EDIT: This post is a work in progress, will be adding more in the coming days. Feel free to recommend data for me to put in here as well.
Infiniti/Nissan VR30DDTT Engine:
Announced by Infiniti on December 15, 2015 the VR30DDTT was first made available in the Infiniti Q50 sedan followed by the Q60 coupe a year later. Both platforms offer this engine in a 300HP and 400HP variation. It has been on the Ward's 10 Best Engines list for 2017 and 2018.
Highlights:
2,997cc (3.0L) 60 degree V6 configuration
Aluminium block with arc sprayed mirror coating to cylinder bores
Dual Over Head Cams, 4-valves per cylinder, Aluminium cylinder heads
Lightweight resin intake and lower oil pan
Compact twin direct-mount turbos with integrated exhaust manifold and electronic wastegate actuator
Twin water-to-air charge coolers with one (300 hp)/two (400 hp) water pumps
Electronically controlled variable displacement oil pump
Intake: electronic variable Valve Timing Control (VTC)
Exhaust: hydraulic continuously variable VTC
Production of the VR30DDTT engine began in 2016 at the powertrain plant in Iwaki, Fukushima, Japan.
Standard VR30 power output: 300HP@6400RPMs and 295lb-ft from 1600-5200RPMs
Red Sport 400 power output: 400HP@6400RPMs and 350lb-ft from 1600-5200RPMs
Turbos
Both the 300HP and 400HP variants of the engine use the same Honeywell-Garrett turbos with the model # MGT14446LKSZ.
Factory peak boost pressure (psi) for the standard VR30DDTT engine is approximately 8.7psi.
Factory peak boost pressure (psi) for the Red Sport 400 VR30DDTT is approximately 14.7psi
These are fairly small turbos that have an integrated exhaust manifold and electronic wastegate specifically designed for the VR30DDTT engine.
Redsport 400 variants have an additional optical turbine speed sensor for each turbocharger allowing for an additional 30% higher turbine propeller speeds (Infiniti lists this as up to 240,000RPMs).
Intercoolers
The VR30DDTT comes with two Charged Air Cooling (CAC) liquid-to-air intercoolers for improved performance and efficiency. This system includes a top-mounted intercooler for each cylinder bank, a heat exchanger, and one or two water pumps to push coolant through the system. Each intercooler is mounted very close to each throttle body reducing the flow path for air entering the engine, allowing for quicker engine response and less heat soak.
There is a completely separate coolant system for the CAC intercoolers, independent from the engine coolant system.
A CAC pressure sensor and temperature sensor supply the ECU with air density and temperature information.
Red Sport 400's are equipped with an additional CAC coolant medium boost pump.
Engine
The VR30DDTT uses both aluminum block and heads. The engine with turbos and intercoolers weighs in at 486.3lbs.
The engine was constructed as a "square" engine, with equal bore and stroke dimensions (86.0x86.0mm). This design allows for a broad torque curve across mid-range engine speeds.
Factory compression ratio comes in at 10.3:1.
Fuel System
The VR30DDTT utilizes a direct-injection (DIG) fueling system. This high pressure system allows for more precise control of fuel into the combustion chamber. Infiniti claims a 6.7% increase in fuel economy with this system.
Two fuel pumps are utilized in this system, an in tank fuel pump, and a high pressure fuel pump mounted onto the engine itself.
EDIT: This post is a work in progress, will be adding more in the coming days. Feel free to recommend data for me to put in here as well.
