Toyota 5VZ-FE 3.4L Engine Specs, Problems, Reliability. The 3.4-liter V6 engine called 5VZ-FE was released in 1995. This engine was developed for Toyota SUVs and off-road cars specifically. The 5VZ-FE engine is based upon the 3VZ-FE engine.
The cast iron cylinder block is from the 3VZ-FE, however it has a larger bore size for increasing displacement from 3.0 liters up to 3.4 liters. The engine has a V-shaped setup with a 60-degree cylinders angle. Larger bore size needed brand-new pistons to achieve a compression ratio of 9.6:1. At the top of each cylinder block, aluminum DOHC cylinder heads were set up with 4 valves per cylinder. They are the same as the 3VZ-FE heads, but with small modifications. Camshafts specifications of both engines are different. 5VZ-FE camshafts were tuned for more torque at low revs compared to the 3VZ, which provides less peak torque but has a gentle flattish curve throughout most of the range. Camshafts are driven by timing belt.
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Toyota 5VZ-FE 3.4L Engine Specs, Problems, Reliability
The engine got a new consumption manifold with longer runners, which also assists to produce optimum torque at low and middle engine speed. The fuel injection system was customized; engineers used a consecutive multiport fuel injection (SFI). The 5VZ-FE also got a brand-new ignition system. The exhaust manifolds were enhanced to produce more torque. The 5VZ engine was equipped with oil cooler and brand-new more efficient coolant fan to enhance the circumstance with overheating on the off-road terrain.
The 5VF-FE became an excellent engine for industrial trucks and off-road lorries made by Toyota. It was produced till 2004 and then replaced by the 1GR-FE engine.
The favorite method to increase the power and torque of the 5VZ is to set up a supercharger on it. There are lots of bolt-on sets on the marketplace available for this V6 engine like TRD supercharger kit which utilizes Eaton M62 supercharger. This upgrade requires replacing the stock fuel injectors by the fuel injectors from the 2JZ-GE engine or any high-performance injectors for increased fuel intake. The output with stock bottom parts (pistons, connecting rods, crankshaft, and so on) on the increase pressure in between 0.5-0.7 bar has to do with 250-280 hp and a lot of torque.
Toyota 5VZ-FE Engine Problems and Reliability
The 5VZ is more trusted than its predecessor. But there are still can be found problems with head gasket took place the engine overheating. The life expectancy of 5VZ is a bit longer, and it is about 200,000 miles of mileage (320,000 km). With mindful upkeep and the premium oil, it is possible to run more miles without any problems.
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Toyota 5VZ-FE 3.4L Engine Specs
| Manufacturer | Toyota Motor Manufacturing Alabama |
| Production years | 1995-2004 |
| Cylinder block material | Cast Iron |
| 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 | 93.5 |
| Stroke, mm | 82.0 |
| Displacement, cc | 3378 |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 9.6:1 |
| Power, hp | 190 hp (142 kW)/4,800 |
| Torque, lb ft | 220 lb-ft (298 Nm)/ 3,600 |
| Engine weight | 420 lbs (190 kg) |
| Firing order | 1-2-3-4-5-6 |
| Engine oil weight | 0W-30, 5W-30, 5W-40, 10W-30 |
| Engine oil capacity, liter | 5.3 |
| Oil change interval, mile | 6,000 (10,000 km) or 12 month |
| Applications | Toyota 4Runner, Toyota HiLux, Toyota Land Cruiser Prado, Toyota Tacoma, Toyota Tundra, Toyota T-100, Toyota Granvia |