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. Applications Hyundai Elantra (J1) (1990–1995) Hyundai Scoupe (1990–1992) Hyundai Excel/Pony (X2) (1989–1993) 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. Applications Hyundai Elantra (J1) (1993–1995) 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. Details 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 Applications Hyundai Elantra (J1) (1990–1993) 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. This engine shares its 88 mm stroke with the Mitsubishi 4G67 from which it is derived, but thanks to a 80.6 mm bore the displacement is kept beneath the 1800 cc threshold, allowing for lower road taxes in some markets. Applications (G4CM) Hyundai Elantra (1990–1993) Hyundai Sonata (1988–1998) 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. Applications (G4CN) Hyundai Elantra (1993–1999) Hyundai Sonata (1993–1998) 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. Applications (G4JN) Hyundai Sonata (EF) (1998–2001) Kia Optima (MS) (2000–2005) 2.0L (G4CP/G4JP/L4CP/L4JP) G4CP is Hyundai's name for the Mitsubishi 4G63 engine.