Toyota 1MZ engine specifications
| Manufacturing | Kamigo Plant Toyota Motor Manufacturing Kentucky |
| Engine brand | Toyota 1MZ |
| Years of manufacture | 1994-2007 |
| Cylinder block material | aluminum |
| Power system | injector |
| Type | V-type |
| Number of cylinders | 6 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 83 |
| Cylinder diameter, mm | 87.5 |
| Compression ratio | 10.5 |
| Engine displacement, cc | 2995 |
| Engine power, hp/rpm | 190/5400 210/5800 |
| Torque, Nm/rpm | 275/4400 328/4400 |
| Fuel | 95 |
| Environmental standards | Euro 4 |
| Engine weight, kg | 158 |
| Fuel consumption, l/100 km (for Camry XV30) – city – highway – mixed. |
15.7 8.3 11.0 |
| Oil consumption, gr./1000 km | up to 1000 |
| Engine oil | 5W-30 10W-30 |
| How much oil in the engine | 4.7 |
| Oil change is carried out, km | 10000 (better 5000) |
| The operating temperature of the engine, deg. | – |
| Engine life, thousand kilometers – according to the factory data – in practice |
n.d. 300+ |
| Tuning – potential – without loss of resource |
400+ n.d. |
| Motor installed | Toyota Avalon Toyota Camry Toyota Estima/Previa Lexus ES300 Lexus RX300 Toyota Harrier Toyota Sienna Toyota Alphard Toyota Solara Toyota Windom |
Troubleshooting and repair of the 1MZ-FE engine
The 1MZ engine replaced the 3VZ in 1994 and was produced until 2007, during the last three years of production, smoothly replaced by the newer 3MZ engine. 1MZ was a 3-liter V6 in an aluminum block, with an angle of camber of 60 ° cylinders, with forged crankshaft, lightweight piston group, in the timing system used a belt, which is replaced once every 150,000 km. In addition, the engine was equipped with an exhaust gas recirculation system EGR, intake manifold with variable geometry ACIS, on later versions there was a system of variable valve timing on the intake shaft VVTi and electronic throttle. There are no hydrocompensators on 1MZ and therefore once in 100.000 km, if necessary, it is necessary to carry out works on adjustment of valve clearances. In practice, nobody does it neither after 100, nor after 200,000 km… In general, a typical Toyota engine, nothing supernatural.
Faults, problems 1MZ and their causes
1. High oil consumption. Usually 1MZ engines are quite old, with huge mileage and the issue of oil consumption should not be surprising, change oil rings, caps.
2. Does not pull, all sorts of dull, does not spin. Change detonation sensors, on 1MZ motor they often fail.
3. RPMs float. Clean the throttle block, forsnuki, change the VVTi valve. Also, the VVTi valve can cause the engine to trot, twitch, vibrate, etc.
Another engine 1MZ is prone to zakoksovka, with time begins to leak clutch VVTi, the motor diesels, it is treated by replacing the clutch. Like all the latest Toyota engines, 1MZ is officially unrepairable and in case of what, it will be necessary to replace it with a contract one, or to look for a third-party service, where you don’t mind to mess with the aluminum block. With adequate operation and maintenance, the motor goes quite long, the resource of 1MZ-FE passes over 300 thousand kilometers, which is not bad at all.
In general, the motor is good, if it was followed, will not cause big problems.
Tuning the engine Toyota 1MZ-FE
Compressor on 1MZ (Supercharger)
Supercharging with a compressor is probably the easiest way to increase the power of 1MZ, because there are a lot of ready-made kits from various companies, including Toyota’s TRD. TRD kit blows up to 0.5 bar and is put on the native piston, with the replacement of the pump on Walbro 255 lph, injectors are put performance 320-360cc, exhaust diameter 2.5″, the brains come in a set. Such junk gives up to 270 hp, but the cost will not be childish. To optimize costs, you can take a used kit, or you can build it yourself on an Eaton M62 compressor and roll online. Either way, the cost of construction will be quite high, and the return, most likely, will not justify expectations. If you have the right amount of money and the desire to go fast, look in the direction of a consistently shafted JZ.
ENGINE RATING: 4