Hyundai Kia G4JS 2.4L L4 Remanufactured Engine – 1999-2006

Description

Prevent balance shaft bearing seizure and oil aeration under 147 lb-ft continuous pulling while maintaining 20 PSI hot idle oil pressure during demanding round-the-clock utility service operations with the Hyundai Kia G4JS 2.4L L4 Remanufactured Engine. Built for 1999 to 2006 commercial sport-utility and minivan fleets, this 16-valve DOHC Sirius II powertrain outputs muscular low-end torque and verified mechanical endurance.

Cast with a heavy-duty gray iron block, cylinder bores receive diamond plateau honing to Ra 30 micro-inches with a 45-degree crosshatch. An induction-hardened forged steel crankshaft turns on bi-metal aluminum bearings, paired with forged steel connecting rods and hypereutectic aluminum pistons with graphite skirt coatings. Equipped with dual counter-rotating silent balance shafts, 5-bolt main caps, a dry weight of 345 lbs, and a 4.5-quart oil capacity, internal tolerances remain consistent under continuous load.

Key Features of Hyundai Kia G4JS

Field service operations managers buy Hyundai Kia G4JS 2.4L L4 remanufactured engine packages to preserve mid-size utility vehicles without taking on new vehicle purchase debt. Automated cold-spin testing verifies hydrodynamic bearing oil film retention across every single crankshaft journal before transport packaging.

• Dual overhead camshafts open sixteen valves for broad low-end and midrange pulling power.
• Multi-layer steel cylinder head gaskets maintain combustion containment during severe summer heat cycles.
• Dual internal counter-rotating balance shafts cancel secondary harmonic engine vibrations for smooth operation.
• Line-honed main bearing saddles maintain hydrodynamic oil film thickness under heavy acceleration.
• High-pressure internal trochoid oil pump feeds 55 PSI through clear block lubrication galleys.
• Dynamic mass balancing keeps harmonic rotating unbalance below 0.5 gram-inches.
• This Hyundai Kia G4JS crate motor matches factory rear-wheel drive and all-wheel drive transaxles.

Sirius Series Dynamic Thermal Bounds

Engine lubrication maintains 20 PSI at warm idle and stabilizes between 50 and 65 PSI at 3000 RPM cruising speed. Coolant temperature operates from 185°F to 200°F via the primary thermostat circuit. The engine outputs 145 continuous brake horsepower at 5500 RPM and 147 lb-ft torque at 3000 RPM. A 9.0:1 compression ratio yields 165 to 180 PSI cranking compression across all four cylinders. Rated for Severe Commercial Fleet duty, radiator heat rejection reaches 3,100 BTU/min under continuous hauling.

Transaxle Mount Snout Dimensions

The rear crankshaft flange uses an 8-bolt flexplate bolt circle machined for automatic transmissions or manual clutches. Pilot bore diameter measures 0.826 inches with concentricity verified within 0.0008 inches to prevent input bearing deflection. Front crankshaft snout measures 1.181 inches with a precision keyway, holding crank thrust endplay within 0.003 to 0.006 inches.

Pre-Lube Setup Operational Limits

Technicians must prime the lubrication channels using an external oil priming container through the oil pressure sensor port before initial starting. Fill with 5W-30 motor oil and clear air from the cooling system using vacuum filling equipment. This powertrain is not engineered for forced induction turbochargers exceeding 5 PSI boost, nitrous systems, or racing competition.

• Check crankcase motor oil level and coolant overflow bottles each shift.
• Change engine motor oil and filter every 4,000 miles or 150 hours.
• Inspect timing belt condition and balance shaft drive belt every 12 months.

Fleet Warranty Transport Inventory

Protected by an extensive 3-Year / 100,000-Mile commercial fleet warranty covering parts and labor standards. Transport crate contents include the remanufactured long block engine, high-capacity oil pump, full vehicle installation gasket set, water pump inlet o-ring, pre-lube instruction sheet, and dynamometer cold-test validation reports.