The 2.5-liter turbo Toyota 1JZ-GTE engine was produced at Tahara Plant from 1990 to 2007 and was put into the company’s popular rear-wheel drive models, such as the Supra, Crown, Mark 2. There are two generations of this engine: the first in 1990 and the second in 1996 with the VVT-i system.
The JZ family also includes the twin-engines: 1JZ-GE, 1JZ-FSE, 2JZ-GE, 2JZ-GTE and 2JZ-FSE.
Engine specifications for Toyota 1JZ-GTE 2.5 turbo
First generation of 1990
| Configuration | Inline |
| Number of cylinders | 6 |
| Number of valves | 24 |
| Displacement | 2492 cc |
| Cylinder diameter | 86 mm |
| Stroke | 71.5 mm |
| Power system | Injector |
| Engine power | 280 hp |
| Torque | 360 Nm |
| Compression ratio | 8.5 |
| Fuel type | Medium/Plus |
| Euro class | EURO 2 |
Second generation 1996 with VVT-i
| Configuration | Inline |
| Number of cylinders | 6 |
| Number of valves | 24 |
| Displacement | 2492 cc |
| Cylinder diameter | 86 mm |
| Stroke | 71.5 mm |
| Power system | Injector |
| Engine power | 280 hp |
| Torque | 380 Nm |
| Compression ratio | 9.0 |
| Fuel type | Medium/Plus |
| Euro class | EURO 3 |
The dry weight of the 1JZ-GTE engine is 260 kg
1JZ-GTE 2.5 l motor information
Toyota revolutionized turbo engines in 1990, with their iconic six-cylinder power unit featuring a cast iron cylinder block and aluminum 24-valve head. Innovative timing belt drive technology provided unmatched performance—especially when combined with the two turbines CT12A and intercooler system. Making its debut as one of Japan’s most popular units, it boasted an impressive 280 hp while generating 360 Nm torque thanks to distributed fuel injection systems.
In 1996, the second generation of 1JZ-GTE turbo engine was launched with a host of modifications compared to its predecessor. The upgrade included swapping out dual turbines CT12A for one larger CT15B and installing variable valve timing technology VVT-i on the intake shaft; improved compression ratios also contributed towards an impressive 20 Nm boost in torque without sacrificing power.
Fuel consumption 1JZ-GTE
The 2003 Toyota Mark II with automatic transmission as an example (l/100km):
| City | 14.7 l |
| Highway | 8.5 l |
| Combined | 10.9 l |
What cars have the Toyota 1JZ-GTE
| Chaser 4 (X80) | 1990 – 1992 |
| Chaser 5 (X90) | 1992 – 1996 |
| Chaser 6 (X100) | 1996 – 2001 |
| Cresta 3 (X80) | 1990 – 1992 |
| Cresta 4 (X90) | 1992 – 1996 |
| Crown 11 (S170) | 1999 – 2007 |
| Mark II 6 (X80) | 1990 – 1992 |
| Mark II 7 (X90) | 1992 – 1996 |
| Mark II 8 (X100) | 1996 – 2000 |
| Mark II 9 (X110) | 2000 – 2007 |
| Mark II Blit 1 (X110) | 2002 – 2007 |
| Soarer 3 (Z30) | 1991 – 2000 |
| Supra 3 (A70) | 1990 – 1993 |
| Verossa 1 (X110) | 2001 – 2004 |
Reviews for 1JZ-GTE engine its pros and cons
Advantages:
- One of the most reliable turbo engines
- Endless possibilities for tuning
- Very large selection of spare parts
- Plenty of inexpensive donors at salvage yards
Disadvantages:
- Problems with ceramic impeller
- Impressive fuel consumption up to 25 liters
- Ignition system is very afraid of water
- Hydraulic compensators are not provided
Engine Toyota 1JZ-GTE 2.5 l Maintenance data
| Interval | every 10 000 km |
| Oil capacity | 5.4 / 5.9 l |
| Need to change | 5.1 / 5.6 l |
| Type of oil | 5W-30, 5W-40 |
| Timing Chain Type | Belt |
| Service life | 100 000 km |
| In practice | 80 000 km |
| At breakage/trans-skip | valve does not bend |
| Re-adjustment | every 100 000 km |
| Air filter | 40 000 km |
| Fuel filter | 40 000 km |
| Spark plugs | 20 000 km |
| Antifreeze | 2 years or 40 000 km |
Reliability & problems of the 1JZ-GTE
Timing Belt Tensioner Issues
Many owners of 1JZ-GTE and 2JZ-GTE engines may know all too well the issues brought on by a weak timing belt tensioner bracket. Fortunately, these Toyota powerhouses are noninterference designs – meaning that even if the tensioners fail, there’s usually no need to worry about valves being damaged or needing replacement. Despite this silver lining in an otherwise unpleasant scenario, it is always advisable for drivers to replace their timing belts before any serious breakdowns occur.
Excess Engine Oil Consumption
With high mileage engines, it is common to find that the 1JZ-GTE can suffer from elevated engine oil consumption. While this may be worrying at first glance, fortunately this type of issue is rarely serious and simply requires frequent monitoring of your vehicle’s fluid levels in order to ensure proper function.
Problematic Factory Turbos
Many people choose to upgrade the venerable 1JZ engine with turbo power, but its sequential setup is not without problems. Age and abuse can take their toll on these turbos, so it’s important to be mindful as you tune your car for added performance – a common goal among many enthusiasts.
VVT-i Issues
Toyota’s VVT-i system revolutionized performance capabilities when it was introduced in 1995, allowing the 1JZ-GTE engine to finely adjust intake valve timing according to ever changing operating conditions. Unfortunately however, age can take its toll on these advanced systems and warning signs oftentimes are left undetected – from head related knocking noises or rough idling all the way down to misfires. Should you notice any suspicions with your vehicle’s performance levels due to a potential failing of your Toyota’s VVT-i system, keep an eye out for those mentioned above!
The manufacturer claims an engine life of 300,000 km, but it can go as long as 500,000 km.
Summary
- The 1JZ-GTE is highly regarded by enthusiasts due to its tremendous potential and build quality.
- The aftermarket JZ world offers a range of performance options for all levels of drivers.
- The 1JZ can be used in many applications, from drifting to time attack cars, dragsters to sleepers.
- While the 2JZ may be more iconic, the 1JZ is still an excellent engine that has stood the test of time over 30 years later and remains competitive with modern engines.
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