Supra 2jz
Supra 2jz
The 2JZ-GTE originally powered the Toyota Aristo V (JZS147) in 1991 before becoming Toyota’s flagship performance engine in the Toyota Supra RZ (JZA80). Its mechanical basis was the existing 2JZ-GE, but differed in its use of sequential twin turbochargers and an air-to-air side-mounted intercooler. The engine block, crank, and connecting rods of the 2JZ-GE and 2JZ-GTE are the same with the exception that the 2JZ-GTE has oil spray bars installed in the block to aid in cooling the pistons. Toyota’s VVT-i variable valve timing technology was added to the engine beginning in September 1997, whence it phased out the original engine. Consequently, maximum torque and horsepower was raised for engines selling in all markets.
The addition of twin turbochargers, jointly developed by Toyota with Hitachi, in sequential configuration had raised its commercially-cited output from 230 PS (169 kW; 227 hp) to the, then, Japanese auto industry maximum of 280 PS (206 kW; 276 hp) at 5600 rpm. In its first appearance, torque was advertised as 44.3 kgm (435 Nm, 320 lbft) to be later recited as 54.1 kgm (530 Nm, 391 lbft) with the introduction VVT-i in 1997. The mutually-agreed, industry-wide output ceiling was enforced by Japan’s now-defunct Gentlemen’s Agreement, exclusively between Japanese automakers selling to the Japanese domestic market. For North American and European markets, power was raised to 415 PS (305 kW; 409 hp) at 5600 rpm.
The export version of the 2JZ-GTE achieved its higher power output with the use of newer stainless steel turbochargers (ceramic for Japanese models), revised camshafts, and larger injectors (550 cc/min for export, 440 cc/min for Japanese). The mechanical similarities between the Japanese-specification CT20 turbine and export-specification CT12B turbine allow interchangeability of the exhaust-side propeller shaft. Additionally, the export-exclusive CT12B turbine received more durable turbine housings and stainless steel turbine and impeller fins. Multiple variants of the Japanese CT20 turbine exist discretely, which are identified with the B, R, and A part number suffixes (eg.: CT20A).
Article Source: En.wikipedia.org
