Hyundai Gamma engine

The Hyundai Gamma engine was introduced in 2006 to replace the existing Hyundai Alpha engine. There are 1.4 L and 1.6 L versions of this engine.
Being a development from the Alpha II engine, significant changes include the aluminum construction of the block and cylinder head, resulting in a 15 kg weight reduction to just under 100 kg, and the use of a timing chain instead of belt. It is also the first offset crankshaft engine developed by Hyundai.
Production takes place in Shandong,, Žilina, Hwaseong and Irungattukottai.

Gamma I

1.4 MPi (G4FA)

The G4FA is a engine. Bore and stroke is. It has MPI and makes at 6,300 rpm and of torque at 4,200 rpm. Power is dropped to at 5,500 rpm and of torque at 4,200 rpm in the Hyundai i20. The engine features double overhead cams with 4 valves per cylinder and a chain driven camshaft with continuously variable valve timing system CVVT on intake camshaft only. It is replaced by the 1.4 L Kappa (G4LC) engine.
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1.6 MPi (G4FC)

The Gamma 1.6 MPI version features the same 77mm bore as the 1.4 but an increased 85.4mm stroke and makes at 6,000 rpm and of torque at 4,200 rpm. In 2010, the G4FC was replaced by the G4FG engine.
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1.6 FLEX (F4FA/F4FC)

Flex fuel version of the Gamma 1.6 MPi. Bore and stroke are 77mmx85.4mm and the engine makes at 6,000 rpm and of torque at 5,000 rpm.
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1.6 LPI (L4FA/L4FC)

It is a hybrid variant with liquefied petroleum gas engine and electric motor. To prevent knocking it has a higher compression ration of 12. instead of 10.5.
In this configuration the engine runs in Atkinson cycle.
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Gamma II

1.6 MPi (G4FG)

Released in 2010, the Gamma II MPI version with dual CVVT is a engine that makes at 6,000–6,300 rpm with of torque at 4,500–4,850 rpm.
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1.6 FLEX (F4FG)

Flex fuel version of the Gamma II 1.6 MPi. Bore and stroke are 77mmx85.4mm for a total displacement of. The engine makes at 6,300 rpm and of torque at 5,000 rpm.
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1.6 GDi (G4FD)

The 1.6 Gamma GDi engine is a gasoline direct injection engine, with Dual-Continuous Variable Valve Timing (D-CVVT). Power output to at 6,300 rpm and at 4,850 rpm. It was introduced in 2010 in the Hyundai ix35 and Kia Sportage.
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1.6 T-GDI (G4FJ)

Announced in 2011, it is a version of 1.6 Gamma GDi with twin-scroll turbocharger, air guided intercooler, direct fuel injection system and dual CVVT. It produces at 6,000 rpm with of torque at 1,500–4,500 rpm. A detuned version is available with at 5,500 rpm.
The engine was unveiled in the 11th Hyundai-Kia International Powertrain Conference.
The engine has been revised in the 2nd Generation Veloster Turbo to include a new pressurized cooling system, higher compression ratio of 10:1, electronically actuated wastegate, and a new ECU.
Its improved version equipped with Continuously Variable Valve Duration was released in 2019 as the Smartstream G1.6T (G4FP) engine.
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Engines

Model	code	Power	Torque		Weight
1.4 Gamma MPi	G4FA	at 6300 rpm	at 5000 rpm	10.5:1
1.6 Gamma GDi	G4FD	at 6300 rpm	at 4850 rpm	11.0:1
1.6 Gamma MPi	G4FC	at 6000 rpm	at 4850 rpm	10.5:1
1.6 Gamma MPi	G4FG	at 6300 rpm	at 4850 rpm	10.5:1
1.6 Gamma T-GDI	G4FJ	at 5500 rpm	at 1500-4500 rpm	9.5:1
1.6 Gamma T-GDI	G4FJ	at 6000 rpm	at 1750-4500 rpm	9.5:1
1.6 Gamma T-GDI	G4FJ	at 6000 rpm	at 1500-4500 rpm	10.0:1

Model	code		Bore × Stroke	Power	Torque
1.6 Gamma LPI	L4FA			at 5700 rpm	at 4000 rpm	13.0:1
1.6 Gamma LPI	L4FA	electric motor		at 1850-2500 rpm	at 0-1800 rpm
1.6 Gamma LPI	L4FA	combined		at 5700 rpm	at 4000 rpm	13.0:1