Design objectives were to provide high performance and good fuel economy with excellent durability at a reasonable cost.
A strengthened block, an eight-counterweight crankshaft, and hydraulic engine mounts were added from 2000-onward to reduce NVH (noise, vibration and harshness).
Notable improvements over the Alpha included a DOHC 16-valve cylinder head, graphite-coated piston skirts, a strengthened cylinder block, ribbed aluminum oil pan, coil-on-plug ignition, an enlarged throttle body (increased from 48 mm to 52 mm), a revised PCM (powertrain control module), simplified and shortened intake ducting, a revised intake manifold, and a returnless fuel system.
The DOHC 1.4 L (1399 cc) G4EE Alpha II debuted in the 2005 European Kia Rio JB, but wasn't available in North America.
The engine was noted for its smoother, freer revving nature as compared to the larger 1.6 L due to its squarer bore:stroke dimensions.
Post 2005 models feature Hyundai's variable valve timing technology (CVVT) Specification: Bore: 76.5 mm (3.01 in) Stroke: 87 mm (3.43 in) Total displacement: 1,599 cc (97.6 cu in) Compression Ratio: 10.0:1 Firing Order: 1-3-4-2 Idle RPM: 750± 100 Ignition Timing at idle speed: BTDC 9° ± 5°/800 rpm Size (L x W x H): 465mm x 572mm x 654mm Weight (dry): 118.2 kg (260.6 lb) Alternator: 13.5V/90A Starter motor: 12V/0.9KW