Toyota G engine

Toyota G engine
Overview
Manufacturer	Toyota Motor Corporation
Production	1979–2005

The Toyota Motor Corporation G-family engine is a family of straight-6 piston engines produced from 1979 to 2006. It is notable in that only a single displacement, 2.0 L (1,988 cc), was produced in this series. All were belt-driven OHC non-interference engines (except the VVT-i version in the IS200 which is an interference engine), with multivalve DOHC (except the 1G-EU SOHC 12 valve engine) and even variable valve timing added later. The 1G-GEU was Toyota's first four-valve twincam engine. A prototype version of the 1G-GEU called the LASREα–X, featuring twin turbos, variable valve timing and intake as well as variable displacement, was fitted to the Toyota FX-1 show car at the 1983 Tokyo Motor Show. It showcased a number of technologies which were later to become commonplace.

These engines were used as a lower-displacement alternative to the more upmarket M family and JZ family straight-sixes.

Since just one displacement was offered, all G-family engines are marked 1G and share the same "square" 75 mm (2.95 in) bore and stroke.

Applications:

The Japan-spec 1G-EU was produced from 1979 through 1988. This is the only two-valve SOHC member of the family. Output was 105-125 hp (78-93 kW) at 5,400 rpm and 116–127 lb·ft (157-172 Nm) at 4,400 rpm.

The DOHC 1G-FE uses a narrow valve angle and other fuel economy optimizations. It was introduced in 1988. Output was 135 hp (101 kW) at 5,600 rpm and 130 lb·ft (176 Nm) at 4,400 rpm. In 1998 VVT-i was added, which bumped output to 160 hp (119 kW) at 6,200 rpm and 148 lb·ft (200 Nm) at 4,400 rpm for the Altezza/IS 200. With the end of the first generation Lexus IS this engine ceased production in 2005.

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