# Toyota ZZ engine

The Toyota ZZ engine family is a straight-4 piston engine series. The ZZ series uses a die-cast aluminium engine block with thin press-fit cast iron cylinder liners, and aluminium DOHC 4-valve cylinder heads. The camshafts are chain-driven. The two 1.8 L members of the family, the 1ZZ and 2ZZ, use different bore and stroke. The former was optimised for economy, with torque emphasised in lower revolutions per minute operating range, while the latter is a "square" design optimised for high-RPM torque, yielding higher peak power. The ZZ family replaced the extremely popular cast-iron block 4A engines.
Toyota engine names are interpreted as follows. The leading number denotes the generation, and the next one or two letters, specify the engine family. The remaining letters, following a hyphen, describe the engine's major features. For example, the 2ZZ-GE can be decoded as being the second generation of the ZZ engine series and features a performance-oriented cylinder head with widely angled valves (G) and electronic fuel injection (E).

## 1ZZ
### 1ZZ-FE

The 1ZZ-FE is a 1.8 L (1,794 cc) version. Bore x stroke of 79 mm × 91.5 mm (3.11 in × 3.60 in). Compression ratio is 10.0:1. It uses MPFI, has VVT-i (1998-99 1ZZ engines don't have VVT-i), and features fracture-split forged powder metal connecting rods, one-piece cast camshafts, and either a cast aluminum intake manifold or a molded plastic intake manifold.
The 1ZZ-FE was manufactured at both the Toyota Motor Manufacturing West Virginia plant in the United States and at the Shimoyama plant in Japan.

#### North America

Built in the United States at Buffalo, West Virginia, output of the North American 1ZZ-FE is between 120 bhp (122 PS; 89 kW) at 5,600 rpm with 122 lbf⋅ft (165 N⋅m) of torque at 4,400 rpm, and 130 bhp (132 PS; 97 kW) at 6,400 rpm with 126 lbf⋅ft (171 N⋅m) of torque at 4,200 rpm. Production at Cambridge, Ontario was discontinued in December 2007, while production at Buffalo, West Virginia was halted in 2008.
A factory supported bolt-on supercharger kit for the 1ZZ-FE was sold for the 2003–2004 Corolla and Matrix by Toyota Racing Development, and Pontiac Vibe by GM Performance. The supercharger gives 7.5 pounds per square inch (0.52 bar) of boost, with a 40 horsepower (30 kW; 41 PS) and 38 lb⋅ft (52 N⋅m) of torque increase at the wheels.
Toyota announced a voluntary recall of 2005 to 2008 Toyota Corollas and Matrixes equipped with the 1ZZ-FE engines. The issue involves the engine control module, and includes the potential for it to develop a crack on the module's circuit board, which can result in the car not starting, the transmission shifting harshly, or the engine stalling. Additionally, General Motors announced a voluntary recall of Pontiac Vibes from years 2005 to 2008 for the same issue.
Applications:
* Toyota Corolla (E110)
* Toyota Corolla (E120) CE/LE/S/VE, Fielder, Runx (Japan), Altis (Asia)
* Toyota Corolla (E140) Axio, Fielder (Japan)
* Toyota Corolla Spacio
* Toyota Corolla Verso
* Toyota Allion
* Toyota Premio
* Toyota Vista and Vista Ardeo
* WiLL VS
* Toyota Caldina
* Toyota RAV4
* Chevrolet Prizm
* Pontiac Vibe
* Toyota Celica GT
* Toyota Matrix
* Toyota Avensis
* Toyota Opa
* Toyota Isis
* Toyota Wish
* Lotus Elise
* Toyota MR2 (W30)

#### Japan

Built in Japan at the Shimoyama plant in Miyoshi, Aichi, the Japanese 1ZZ-FE is similar to the one used in North America, except that it has larger (32 mm) intake valves and (27.5 mm) exhaust valves with corresponding revisions to the ports, resulting in higher power output compared to the North American 1ZZ-FE. It uses Multi-point fuel injection along with VVT-i. Toyota's advertised power output is 140 bhp (142 PS; 104 kW) at 6,400 rpm and 127 lb⋅ft (172 N⋅m) of torque at 4,400 rpm.
It has been widely circulated online that the Japan-built engine was labeled as "1ZZ-FED", however no official documentation or labeling from Toyota has ever cited the "FED" suffix. All of the applications that used the Japan-built engine (including the ones listed below) have their stickers and emission certifications labeled as 1ZZ-FE without the "D" at the end. Like many other engines manufactured by Toyota, the company has felt the need to change something internal to the engine for different applications without changing the designation (e.g. the 4A-FE went through three generations of changes under the same name).
Applications:
* Toyota Celica (ZZT230, Japan Only)
* Toyota MR2 Spyder
* Toyota Wish 1.8
* WiLL VS 1.8

### 1ZZ-FBE

A special modified variation of the 1ZZ-FE that can run on E100 Ethanol.
Applications:
* Toyota Corolla (Brazil only) 100 kW (136 PS)

### LJ479Q

An internal code of the 1ZZ-FE engine for SAIC-GM-Wuling cars.
Applications:
* Baojun 530
* Baojun 560
* Baojun 730/Wuling Cortez
* Wuling Rongguang truck
* Wuling Zhengcheng

### Excessive oil consumption issues

The 1ZZ engines (particularly the 1ZZ-FE) was notoriously known for excess oil consumption, especially in earlier models from the 1990s to the 2000s. The problem stemmed from an inherent design flaw in the engine with its undersized piston rings and insufficient oil drainage holes in the pistons. Over time, this led to oil blow-by, where excessive oil would enter the combustion chamber, causing the engine to start burning oil. Owners often reported needing to add oil between changes, with some engines consuming up to a quart every 1,000 miles. This leads to shortened oil changes, significantly increasing running costs and hassle. Though later models received improvements, this issue remains a significant concern for 1ZZ engines of that era.

## 2ZZ
### 2ZZ-GE

The 2ZZ-GE is a 1.8 L; 109.6 cu in (1,796 cc) version built in Japan, in collaboration with Yamaha Motor Corporation. Bore x stroke is 82 mm × 85 mm (3.23 in × 3.35 in). It uses Multi-point Fuel Injection, VVTL-i, and features forged steel connecting rods. Compression ratio is 11.5:1, necessitating high-octane gasoline (91 octane or above in the (R+M)/2 scale used in North America). Power output for this engine varies depending on the vehicle and tuning, with the Celica GT-S, Corolla T-Sport, Lotus Elise and Lotus Exige offering 141 kW (189 hp), whereas the American versions of the 2003 Matrix and Pontiac Vibe versions produce 180 hp (134 kW) @ 7,600 rpm and 130 lb⋅ft (176 N⋅m) @ 6800 rpm, with all later years offering anywhere from 173 hp (129 kW) in 2004 to 164 hp (122 kW) in 2006 due to a recurved powerband. The differing power figures from 2004 through 2006 are due to changes in dynamometer testing procedures. The Australian variant Corolla Sportivo produces 141 kW (189 hp) at 7,600 rpm and 181 N⋅m (133 lbf⋅ft) of torque. Due to noise regulations, Toyota recalled them for a flash of the PCM to up their output to classify them in the more lenient "sports car" noise category. The Corolla Compressor and Lotus Exige S add a supercharger with intercooler to achieve 225 hp (168 kW), while the Exige 240R's supercharger increases output to 240 hp (179 kW). The addition of a non-intercooled supercharger to the Elise SC produces 218 hp (163 kW) with a considerable weight saving. The supercharged engines are not labeled as 2ZZ-GZE.
Toyota commissioned Yamaha to design the 2ZZ-GE, based on Toyota's ZZ block, for high-RPM operation and producing a power peak near the top of the RPM range. The high-pressure die-cast aluminum alloy engine block of the 2ZZ-GE featured cylinder walls with Metal Matrix Composite (MMC), which is a reinforcement material composed of ceramic parts and fibers.
Unique to the ZZ family, the 2ZZ-GE utilizes a dual camshaft profile system (the "L" in VVTL-i, known by enthusiasts and engineers alike as "lift" similar to Honda's VTEC) to produce the added power without an increase in displacement or forced induction. The 2ZZ-GE was the first production engine to combine cam-phasing variable valve timing with dual-profile variable valve lift in the American market. The table below lists the specifications of the two camshaft profiles.
| | Intake | Intake | Exhaust | Exhaust |
| | Duration | Valve lift | Duration | Valve lift |
| Low Cam | 228° | 7.6 mm (0.30 in) | 228° | 7.6 mm (0.30 in) |
| High Cam | 292° | 11.2 mm (0.44 in) | 276° | 10 mm (0.39 in) |
The high-output cam profile is not activated until approximately 6,200 rpm, (lift set-points are between 6,000–6,700 rpm depending on the vehicle) and will not engage until the engine has reached at least 60 °C (140 °F). The Toyota PCM electronically limits RPM to about 8,200 RPM via fuel and/or spark cut. The "lift" engagement and the engine redline vary by application. Lotus 2ZZ-GEs are rev limited to 8,500 RPM, for example, whereas Celicas were rev limited to 7,900 to 8,200 RPM in North America, depending on the model year. The first Japanese versions were rev limited to 8,600 rpm with a peak of 190 PS (140 kW).
Consequently, it is impossible to "over-rev" the engine with the throttle alone; a downshift from a higher gear must be involved. A typical "over-rev" can damage the oil pump, commonly disintegrating the lobe ring, resulting in damage similar to the picture at right. The oil pump is the Achilles heel of the 2ZZ, though incidents are rare and usually occur due to fault of the driver. Even the briefest period of oil starvation is usually fatal to this engine design.
For the first few years of production, the engines were notorious for failing "lift bolts". This did not damage the engine, but would hamper performance as the high output cam profile was unable to properly engage. Toyota fixed the problem in late 2002 with a redesigned bolt that was installed on later engines. Earlier engines with the problematic bolts can be fixed via a Toyota-issued TSB simply requiring the new bolt to be installed in place of the old one.
The 2004 and newer Matrix and Corolla XRS models were equipped with smog pumps and have an extra hole above each exhaust port in the engine head and manifold where air is injected to achieve complete fuel burning before the exhaust stream reaches the catalyst. All 2ZZ-GE heads from 03/03 onwards carry this modification even if the vehicle does not have the air injection system.
The 2ZZ-GE remains as one of the highest output per liter and the highest revving mass production engines ever made. It has won the International Engine of the Year category for 1.4 to 1.8-liter engines in 2002 in recognition of its incredible power output.
Applications:
* Toyota Celica SS-II: Japan, 140 kW (190 PS; 187 hp)
* Toyota Celica TRD M Sport (Japan, 203 PS (149 kW; 200 hp))188 N⋅m (139 lbf⋅ft))
* Toyota Celica GT-S (USA, 180 hp (134 kW; 182 PS))
* Toyota Celica 190/T-Sport (UK, 189 hp (141 kW; 192 PS))
* Toyota Celica SX (Australia, 189 hp (141 kW; 192 PS)/180 N⋅m (133 lbf⋅ft))
* Toyota Celica ZR (Australia, 189 hp (141 kW; 192 PS)/180 N⋅m (133 lbf⋅ft))
* Toyota Corolla Sportivo (Australia, 189 hp (141 kW; 192 PS)/180 N⋅m (133 lbf⋅ft))
* Toyota Celica T Sport: Europe, 141 kW (192 PS; 189 hp)
* Toyota Corolla (E120) T Sport Compressor: Europe, supercharged, 165 kW (225 PS; 222 hp)
* Toyota Corolla XRS (USA, 164 / 170 hp (122 / 127 kW; 166 / 172 PS))
* Toyota Corolla Fielder Z Aero Tourer: Japan, 140 kW (190 PS; 187 hp)
* Toyota Corolla "RunX Z Aero Tourer": Japan, 140 kW (190 PS; 187 hp)
* Toyota Corolla RunX RSi (South Africa, 141 kW (192 PS; 189 hp)/180 N⋅m (133 lbf⋅ft))
* Toyota Matrix XRS (USA, 164–180 hp (122–134 kW; 166–182 PS))
* Pontiac Vibe GT (USA, 164–180 hp (122–134 kW; 166–182 PS))
* Toyota Voltz Z: Japan, 132 kW (180 PS; 178 hp)
* WiLL VS 1.8
* Lotus Elise (North America/UK, 190 hp (142 kW; 193 PS))
* Lotus Exige (USA/UK, 190 hp NA & 243 hp supercharged)
* Lotus Exige CUP 260 (USA/UK, supercharged, 260 PS (191 kW; 256 hp))
* Lotus 2-Eleven (USA/UK, supercharged, 252 hp (188 kW; 255 PS))

## 3ZZ
### 3ZZ-FE

The 3ZZ-FE is a 1.6 L (1,598 cc) engine unit built in Japan for models built from 2000 to 2012. Bore and stroke is 79 mm × 81.5 mm (3.11 in × 3.21 in). Max. output is 109 hp (81 kW; 111 PS) at 6,000 rpm and max. torque is 150 N⋅m (111 lb⋅ft) at 4,400 rpm. It features SMP pistons which Toyota made in 1ZZ-FE engines. The preferred engine oil is 5W-30 API grade SL/SM.
It is found in the Toyota Corolla Altis which is sold in Asian countries such as Singapore, Malaysia, Philippines, Thailand, Pakistan (as SE Saloon) and Taiwan; the Toyota Corolla EX in China up until the late 2000s; the Toyota Corolla sedan, hatchback and station wagon sold in Sri Lanka, parts of Europe and the Middle East; and the Toyota Corolla XLi sedan in Brazil. In South Africa, the motor can be found in the RunX 160 and Corolla 160.
Applications:
* Toyota Corolla (E110); facelift (Europe, Middle East, Oceania)
* Toyota Corolla (E120) (Europe)
* Toyota Corolla Altis (E120/E140) (Asia)
* Toyota Corolla EX (E120) (China; until the late 2000s)
* Toyota Corolla XLi (E120) (Brazil)
* Toyota Corolla RunX 160 (South Africa)
* Toyota Corolla Verso
* 2000-2003 Toyota Avensis (T220); facelift (Europe)
* 2003-2008 Toyota Avensis (T250) (Europe)

## 4ZZ
### 4ZZ-FE

The 4ZZ-FE is a 1,398 cc (1.4 L; 85.3 cu in) version. Bore and stroke is 79 mm × 71.3 mm (3.11 in × 2.81 in). Output is 97 hp (72 kW; 98 PS) at 6000 rpm with 130 N⋅m (96 lb⋅ft) of torque at 4400 rpm.
Applications:
* Toyota Corolla (E110) (2000 facelift)
* Toyota Corolla (E120)
* Toyota Corolla (E140)
* Toyota Auris