Nissan VR38DETT 3.8L Engine Specs, Problems, and Reliability. This engine was created specifically for the Nissan GTR, which was reborn in 2007. Rather, the inline six-cylinder engine RB26DETT as in predecessor, Nissan engineers decided to use a more compact V6 engine. They didn’t start from scratch. As the base, they took the tried and true V6 version – the VQ37VHR. Many parts were redeveloped of course.
The engine has its cylinder block. It is made from aluminum and has 60 deg cylinders angle. But there are not cast iron sleeves. Instead of that, on the wall of each cylinder is 0.15 mm layer of low carbon steel. The increased displacement was accomplished by installing the new crankshaft with the longer stroke. This change resulted in measurements of significant bottom parts. The cylinder block height is 244 mm. Linking rod length is 165 mm. Compression height of aluminum created pistons is 34.3 mm.
The engine also has two-camshaft aluminum cylinder heads with 4 valves per cylinder. The consumption and exhaust camshafts are equipped with Constant Variable Valve Timing Control system (CVTCS). VR38DETT camshaft specs: period – 238/248; valve lift – 9.56/ 9.88 mm. The diameter of the intake valve is 37 mm, exhaust valve – 32.2 mm.
The single timing chain drives the intake camshafts by the crankshaft. Little chain drives each exhaust camshaft from intake camshaft inside the cylinder head. By itself, the timing chain is very reputable on this engine. The last TT in the name indicates what it has 2 turbochargers. It has IHI RHF55 turbochargers, which was producing 0.75 bar increase up until 2010 design year.
In 2010 the increase was increased approximately 0.9 bars. The engine got new intake and exhaust manifolds. These controls helped to get 530 hp at 6400 rpm. After a year, in 2011, on this engine were set up brand-new more effective fuel nozzles, redeveloped headers, ECU update. The power was raised to 545 hp. 2016 Nissan GTR design has actually upgraded 565 hp engine likewise. There are new ignition system, titanium exhaust manifolds, and higher boost.
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VR38DETT 3.8 l engine Problems and Reliability
The engine has excellent tuning capacity due to resilient, reputable parts in stock. It is tough to state how long is engine life due to a specific driving design of sports cars like GTR.
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Nissan VR38DETT 3.8L Engine Specs
| Manufacturer | Tochigi Plant |
| Production years | 2007-present day |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Fuel injection |
| Configuration | V |
| Number of cylinders | 6 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 95.5 |
| Stroke, mm | 88.4 |
| Displacement, cc | 3799 |
| Type of internal combustion engine | Four-stroke, turbocharged |
| Compression Ratio | 9:1 |
| Power, hp | 485 hp /6,400 530 hp /6,400 540 hp /6,400 565 hp /6,800 |
| Torque, lb ft | 434 lb-ft (588 Nm) /3,200-5,200 451 lb-ft (612 Nm) /3,200-6,000 466 lb-ft (632 Nm) /3,200-5,800 467 lb-ft (633 Nm) /3,300-5,800 |
| Engine weight | – |
| Firing order | 1-2-3-4-5-6 |
| Engine oil weight | 0W-40, 10W-40 |
| Engine oil capacity, liter | 5.5 (2007-2011) 5.0 (2011+) |
| Oil change interval, mile | 6,000 |
| Applications | Nissan GTR R35, Nissan Juke R |