Hyundai Sigma engine


The Hyundai Sigma engine is a series of V6 piston engines from Hyundai Motor Company, based on the Mitsubishi 6G7 engine. The Sigma engine family began life with the simple V6 name. Displacement ranges from.

2.5

The DOHC G6AV is the small version. Bore is and stroke is shared with the at. Output is at 6000 rpm and at 4500 rpm.

3.0

The DOHC G6AT and G6CT both displace. They share the 2.5's stroke but use a larger bore. Output for the older G6AT is at 6000 rpm and at 4500 rpm, while the G6CT produces at 6000 rpm and at 4000 rpm.
The older SOHC G6AT 3.0 S produces just at 5000 rpm and at 3000 rpm.
Applications
Applications
The G6AU and G6CU are the large versions of the Sigma engine. Bore and stroke are both larger at, respectively. Output is at 5500 rpm and at 4800 rpm for the older G6AU V6 and at 5500 rpm and at 3500 rpm for the new G6CU Sigma.
The 3.5 D has a cast iron engine block and aluminum DOHC cylinder heads. It uses Multi-port fuel injection, has 4 valves per cylinder, and features forged steel connecting rods. It is designed to run on "regular" unleaded gasoline rather than the premium fuel used in many other high-output V6 engines.
The US-market version produces at 5500 rpm with of torque at 3500 rpm. It was introduced with the Kia Sedona minivan in 2001.
Applications
Applications
Applications
This Engine is no longer used by Kia/Hyundai automotive group.