Hyundai Sirius engine
The Hyundai Sirius engine was the company's first larger inline-four engine, with displacements from 1.8 L (1795 cc) to 2.4 L (2351 cc). It is a license-built Mitsubishi construction. This engine is no longer used by Hyundai. 1.5L (G4DJ). The Hyundai G4DJ engine was manufactured from 1989 to 1995 under license from Mitsubishi and was essentially a copy of the 8-valve version of the popular 4G15 powerplant, the engine's advertised power is at 5,500 rpm with of torque at 3,000 rpm. 1.5L (G4CL). The Hyundai G4CL engine features DOHC, the engine's  advertised power is at 6,000 rpm with of torque at 4,500 rpm. 1.6L (G4CR). The Hyundai G4CR is an in-line four, dual overhead camshaft (DOHC) engine manufactured from 1990 to 1995 under license, as it was in fact a copy of the Mitsubishi 4G61 engine, and it was put on the first generation of the Elantra model. Unlike other power units of this series, this one never had a balancing shaft, the engine's advertised power is at 6,000 rpm with of torque at 5,000 rpm. Total displacement: 1595 cc (97.30 cu in) Bore: 82.30 mm (3.240 in) Stroke : 75.00 mm (2.953 in) Compression Ratio: 9.2:1 Idle RPM: 750 ± 100 Ignition timing at idling speed: 5° ± 2°/750 rpm 1.8L (G4CM/G4CN/G4JN). G4CM is a SOHC engine, the engine's advertised power is at 5,000–5,500 rpm with of torque at 4,000–4,500 rpm. G4CN is the DOHC engine based on the Mitsubishi 4G67. Bore and stroke is 81.5 mm × 88 mm (3.21 in × 3.46 in), the engine's advertised power is at 6,000 rpm with of torque at 4,500 rpm. G4JN (Sirius II) is a Korean version DOHC engine with an 81.5 mm  bore and 88 mm stroke. Output was up to at 6,000 rpm with of torque at 4,500 rpm. 2.0L (G4CP/G4JP/L4CP/L4JP). G4CP is Hyundai's name for the Mitsubishi 4G63 engine. Bore x stroke is 85 mm × 88 mm (3.35 in × 3.46 in), the engine's advertised power is at 5,000 rpm with of torque at 4,000 rpm. G4JP 2.0 (Sirius II) is the Korean version. Bore x stroke is 85 mm × 88 mm (3.35 in × 3.46 in). It has a cast iron engine block and aluminum DOHC cylinder heads. It uses MFI fuel  injection, has 4 valves per cylinder and features forged steel connecting rods. The engine's advertised power is at 6,000 rpm with of torque at 4,000–4,500 rpm. 4GA1-1 JAC's 4GA1-1 was learnt from Hyundai, it uses DOHC 16-valves and SFI technology The Hyundai Sirius LPG engine, the engine's advertised power is at 4,500 rpm with of torque at 2,500 rpm. The Hyundai Sirius II LPG engine, the engine's advertised power is at 4,500 rpm with of torque at 2,500 rpm. 2.4L (G4CS/G4JS/L4CS). There are two variants of the Sirius engine called G4CS  and G4JS, bore is 86.5 mm while stroke is 100 mm. The G4CS is of an SOHC design, its advertised power is at 4,500–5,000 rpm with of torque at 2,500–4,000 rpm. The G4JS has a compression ratio of 10.0:1. Output is 141 PS (104 kW) at 5,500 rpm with of torque at 3,000 rpm. It has a cast iron engine block and aluminum DOHC cylinder heads. It uses MPI fuel injection and features forged steel connecting rods. The L4CS variant makes at 4,000 rpm with of torque at 2,000 rpm.