The Toyota JZ engine family is a series of straight-6 automobile engines.
1JZ
The 2.5 L (2491 cc) 1JZ version was produced from 1990 through 1998. Cylinder bore was 86 mm (3.39 in) and stroke was 71.5 mm (2.81 in). It was a 4-valve DOHC engine with a belt-driven camshaft.
Output for the non-turbo 1JZ-GE was 200 hp (149 kW) at 6000 rpm and 185 ft.lbf (250 Nm) at 4000 RPM.
1JZ-GTE
The twin-turbo 1JZ-GTE was Toyota's most powerful engine to date. Although rated at Japan's self-imposed maximum rating of 280 hp (209 kW), this was probably quite conservative. A later unit (with VVT-i) probably produced well more than 300 hp (224 kW). Torque was rated at 278 ft·lbf (376 N·m) at 2400 RPM.
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2JZ
The 3.0 L (2997 cc) 2JZ has been produced since 1993. Cylinder bore was 86 mm (3.39 in) and stroke was 86 mm (3.39 in). VVT-i variable valve timing was added later.
2JZ-GE
The 2JZ-GE is a common version. Output is 215 to 230 hp (160 to 172 kW) at 5800 to 6000 rpm and 209 to 220 ft.lbf (283 to 298 Nm) of torque at 3800 to 4800 RPM.
The most-modern version has an aluminum engine block and aluminum DOHC cylinder heads. It also uses SEFI fuel injection, has 4 valves per cylinder with VVT-i and features forged steel connecting rods.
Applications:
2JZ-GTE
The 2JZ-GTE was developed to power the fourth generation of the Supra sportscar. It was based on the 2JZ-GE, but differed in its use of twin turbochargers.
The use of a CT12 and a CT20 turbocharger raised its power output from a mere 166 kW (225 bhp DIN) to 206 kW (280 bhp DIN) at 5600 rpm, officially limited in the Japanese and European markets, although the real undisclosed figure was well in excess of 300 bhp (224 kW). In the American market, power was raised to 239 kW (320 bhp SAE) at the same 5600 rpm.
The 2JZ-GTE had a long career in motorsport, powering the factory prepared Supras to victory in the Japanese GT Championship in 1997, 2000 and 2001.
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See also
