The Toyota 1UZ-FE engine is a V8 engine that was produced by Toyota from 1989 to 2004. It was used in a variety of Toyota vehicles, including the Lexus LS400 and Toyota Crown, as well as in non-Toyota vehicles such as the Noble M12 and the Ultima GTR.
The engine has a displacement of 4.0 liters (3,968 cc) and features an aluminum block and cylinder heads. It uses double overhead camshafts (DOHC) and four valves per cylinder, and is equipped with Toyota’s Variable Valve Timing (VVT) system.
In its original form, the 1UZ-FE engine produced 250 horsepower and 260 lb-ft of torque. However, over the years, various improvements were made to the engine, including changes to the intake and exhaust systems, which increased its output to 290 horsepower and 300 lb-ft of torque in its final form.
Engine specifications for Toyota 1UZ-FE 4.0 l
First generation
| Configuration | Inline |
| Number of cylinders | 8 |
| Number of valves | 32 |
| Displacement | 3968 cc |
| Cylinder diameter | 87.5 mm |
| Stroke | 82.5 mm |
| Power system | Injector |
| Engine power | 250 – 260 hp |
| Torque | 355 – 365 Nm |
| Compression ratio | 10 – 10.4 |
| Fuel type | Regular |
| Euro class | EURO 2 |
Second generation with VVTi
| Configuration | Inline |
| Number of cylinders | 8 |
| Number of valves | 32 |
| Displacement | 3968 cc |
| Cylinder diameter | 87.5 mm |
| Stroke | 82.5 mm |
| Power system | Injector |
| Engine power | 290 – 300 hp |
| Torque | 400 – 420 Nm |
| Compression ratio | 10.5 |
| Fuel type | Regular |
| Euro class | EURO 3 |
1UZ-FE engine catalog weight is 220 kg
Is the 1UZ-FE V8 4.0 engine good?
The 1UZ-FE V8 4.0 engine is generally considered to be a good engine. It was first introduced in 1989 and was used in various Toyota and Lexus models until 2002. Here are some of the reasons why the 1UZ-FE engine is well-regarded:
- Reliability: The 1UZ-FE engine is known for its reliability and longevity. It has a cast iron block and aluminum cylinder heads, which make it durable and able to withstand high mileage.
- Smooth operation: The engine is designed with four camshafts and 32 valves, which provide a smooth and refined power delivery. It also has a balance shaft, which helps reduce vibrations.
- Power output: The engine produces around 250 to 290 horsepower depending on the model and year, which is impressive for a naturally aspirated V8 engine.
- Aftermarket support: The 1UZ-FE engine has a strong aftermarket following, which means that there are plenty of performance upgrades and modifications available for those who want to increase its power output or customize their vehicle.
- Fuel efficiency: Despite being a V8 engine, the 1UZ-FE is known for its relatively good fuel economy, thanks to features like variable valve timing and electronic fuel injection.
- Low emissions: The 1UZ-FE engine is designed to meet stringent emissions standards, which makes it a good choice for those who live in areas with strict emissions regulations.
- Sound: Many people appreciate the sound of a V8 engine, and the 1UZ-FE is no exception. It has a deep and throaty exhaust note that is music to the ears of many car enthusiasts.
- Versatility: The 1UZ-FE engine was used in a wide range of Toyota and Lexus models, which means that it can be transplanted into many different vehicles with relative ease.
- Smooth power delivery: The engine’s power delivery is smooth and linear, which makes it easy to drive in both city and highway conditions.
- Durability: The engine’s cast iron block and aluminum cylinder heads make it durable and able to withstand high levels of stress. Additionally, its simple and straightforward design makes it easy to maintain and repair.
The 1UZ-FE V8 4.0 engine is a well-regarded engine that is known for its reliability, smooth operation, and impressive power output. It has a strong following in the automotive community and can be a good choice for those who are looking for a powerful and durable engine for their vehicle.
A table of the oil specifications for the 1UZ-FE engine
| Oil Specification | Capacity | Type | Intervals |
|---|---|---|---|
| 5W-30, 10W-30 | 5.5 quarts (5.2 liters) | Synthetic or conventional | 5,000 – 7,500 miles (8,000 – 12,000 km) |
Please note that these are general oil specifications for the Toyota 1UZ-FE engine and specific recommendations may vary depending on the year and model of the vehicle. It is recommended to refer to the vehicle owner’s manual or contact a certified Toyota mechanic for specific oil specifications and intervals.
Fuel consumption data for different models equipped with the Toyota 1UZ-FE
The fuel economy ratings of various vehicles equipped with this engine, here is a general table of estimated fuel consumption:
| Vehicle Model | MPG (Miles per gallon) | L/100 km (Liters per 100 kilometers) |
|---|---|---|
| Lexus LS400 (1990) | 15 | 15.7 |
| Lexus LS400 (1998) | 19 | 12.4 |
| Lexus SC400 (1997) | 18 | 13.1 |
| Lexus GS400 (1998) | 18 | 13.1 |
| Toyota Crown (1995) | 18 | 13.1 |
Please note that these are estimates based on official fuel economy ratings and actual fuel economy can vary depending on factors such as vehicle weight, transmission type, driving conditions, and more. It is recommended to refer to the official fuel economy ratings of a specific vehicle equipped with the 1UZ-FE engine for a more accurate estimate.
What cars have the Toyota 1UZ-FE
| Aristo 1 (S140) | 1991 – 1997 |
| Aristo 2 (S160) | 1997 – 2000 |
| Celsior 1 (XF10) | 1989 – 1994 |
| Celsior 2 (XF20) | 1994 – 2000 |
| Crown 8 (S130) | 1989 – 1991 |
| Crown Majesta 1 (S140) | 1991 – 1995 |
| Crown Majesta 2 (S150) | 1995 – 1999 |
| Crown Majesta 3 (S170) | 1999 – 2002 |
| HiAce 4 (H100) | 1989 – 2004 |
| Soarer 3 (Z30) | 1991 – 1997 |
| GS S140 | 1991 – 1997 |
| GS S160 | 1997 – 2000 |
| LS XF10 | 1989 – 1994 |
| LS XF20 | 1994 – 2000 |
| SC Z30 | 1991 – 2000 |
Maintenance for the Toyota 1UZ-FE engine
A table of the maintenance intervals and costs for the Toyota 1UZ-FE engine:
| Maintenance Task | Interval | Cost Range |
|---|---|---|
| Oil and Filter Change | 5,000-7,500 miles (8,000-12,000 km) | $50-$100 |
| Air Filter Replacement | 15,000-30,000 miles (24,000-48,000 km) | $20-$50 |
| Spark Plug Replacement | 60,000-100,000 miles (96,000-160,000 km) | $100-$300 |
| Timing Belt Replacement | 90,000-100,000 miles (144,000-160,000 km) | $500-$800 |
| Water Pump Replacement | 90,000-100,000 miles (144,000-160,000 km) | $200-$400 |
| Fuel Filter Replacement | 30,000-50,000 miles (48,000-80,000 km) | $50-$100 |
| Transmission Fluid Change | 30,000-60,000 miles (48,000-96,000 km) | $100-$200 |
| Differential Fluid Change | 30,000-60,000 miles (48,000-96,000 km) | $50-$100 |
| Brake Fluid Change | 2 years or 30,000 miles (48,000 km) | $50-$100 |
| Coolant Flush and Fill | 2-5 years or 30,000-50,000 miles (48,000-80,000 km) | $100-$200 |
Please note that the costs listed above are rough estimates and may vary depending on the location, the mechanic, and the specific parts used. It is recommended to refer to the vehicle owner’s manual or contact a certified Toyota mechanic for specific maintenance recommendations and costs.
Is the 1UZ FE engine reliable?
The Toyota 1UZ-FE engine is generally considered to be a very reliable engine, with a reputation for durability and longevity. However, like any engine, it is not without its potential problems. Here are some of the common issues and problems associated with the Toyota 1UZ-FE engine:
- Oil leaks: The engine is known to develop oil leaks over time, particularly around the valve covers and timing cover.
- Timing belt failure: The timing belt is a critical component of the engine and should be replaced at regular intervals to prevent failure, which can cause serious engine damage.
- Camshaft bearing wear: The camshaft bearings can wear out over time, leading to engine noise and reduced performance.
- Ignition coil failure: The engine is known to experience ignition coil failure, which can cause misfires and poor performance.
- Oil consumption: Some 1UZ-FE engines are known to consume oil at a higher rate than normal, which can be caused by worn piston rings or valve stem seals.
- Head gasket failure: The engine can experience head gasket failure, which can cause coolant to leak into the combustion chamber, leading to overheating and potential engine damage.
- Carbon buildup: The engine is prone to carbon buildup on the intake valves, which can lead to reduced performance and fuel economy over time.
- Water pump failure: The water pump is a critical component of the engine cooling system and can fail over time, leading to overheating and potential engine damage.
Overall, the Toyota 1UZ-FE engine is considered to be a highly reliable and durable engine, with many examples achieving well over 200,000 miles with proper maintenance. However, like any engine, it is not without its potential issues and problems. Regular maintenance and prompt repairs can help to prevent or mitigate many of these issues, ensuring the longevity and reliability of the engine.
Tuning options
A table outlining some of the most popular tuning options for the 1UZ-FE V8 4.0 engine, along with their approximate horsepower gains and estimated costs:
| Tuning Option | Approximate HP Gain | Estimated Cost |
|---|---|---|
| Intake and Exhaust Upgrade | 10-20 HP | $500-$1000 |
| Performance Camshaft | 30-40 HP | $500-$1000 |
| Supercharger Kit | 80-120 HP | $5000-$7000 |
| Turbocharger Kit | 100-150 HP | $6000-$9000 |
| Nitrous Oxide Kit | 50-150 HP | $500-$2000 |
It’s important to note that the actual horsepower gains and costs will vary depending on the specific components used and the level of modification required. Additionally, some tuning options may require additional upgrades, such as upgraded fuel systems or engine management systems, to ensure reliable operation.
If you’re interested in tuning your 1UZ-FE engine, it’s best to consult with a reputable tuner or performance shop to determine the best options for your specific goals and budget. They can help guide you through the process and ensure that your engine is modified safely and effectively.
Price range for a used and remanufactured Toyota 1UZ-FE engine
| Condition | Price Range |
|---|---|
| Used | $1,500-$3,500 |
| Remanufactured | $3,000-$5,000 |
Please note that these prices are only a rough estimate and may vary significantly depending on the specific circumstances such as the condition of the engine, location, and supplier. It is recommended to research and compare prices from multiple suppliers before making a purchase decision. Additionally, it’s important to consider any additional costs such as installation fees, shipping costs, and taxes.
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