The Toyota Motor Corporation G-family engine was a straight-6 piston engine produced from 1979. It is unusual in that only a single displacement, 2.0 L (1988 cc), was produced in this series. All were belt-driven OHC engines, with multivalve DOHC and even variable valve timing added later.
These engines were used as a lower-displacement alternative to the more-common M family straight-6.
1G
Since just one displacement was offered, all G-family engines are marked 1G and share the same square 75 mm (2.95 in) bore stroke.
Applications:
1G-EU
The Japan-spec 1G-EU was produced from 1979 through 1986. This is the only 2-valve SOHC member of the family. Output was 105-125 hp (78-93 kW) at 5400 RPM and 116-127 ft.lbf (157-172 Nm) at 4400 RPM.
1G-FE
The DOHC 1G-FE used a narrow valve angle and other fuel economy optimizations. It was introduced in 1988. Output was 135 hp (101 kW) at 5600 RPM and 130 ft.lbf (176 Nm) at 4400 RPM until VVT-i (introduced in 1998) bumped output to 160 hp (119 kW) at 6200 RPM and 148 ft.lbf (200 Nm) at 4400 RPM for the Toyota Altezza/Lexus IS200, Toyota Crown , Toyota Chaser, Toyota Mark II , and Toyota Cresta .
1G-GE
The 4-valve DOHC 1G-GE was intended for high performance. Produced from 1982 through 1986, mostly for the Japan market, output was 140-160 hp (104-119 kW) at 6200 RPM and 120-134 ft.lbf (162-181 Nm) at 5600 RPM.
Applications:
1G-GTE
The 4-valve DOHC 1G-GTE added turbochargers to the mix. Both air-to-air and water-to-air intercoolers were also used, pushing output from 185 to 210 hp (138 to 157 kW) at 6200 RPM and 173 to 203 ft.lbf (234 to 275 Nm) at 3800 RPM.
Applications:
1G-GZE
The 1G-GZE was an odd supercharged version produced in 1985 and 1986. Output was 168 hp (125 kW) at 6000 RPM and 167 ft.lbf (226 Nm) at 3600 RPM. Like the turbo, it was a 4-valve DOHC engine.
See also
