Scion 2ZRFE 1.8L L4 Remanufactured Engine – 41797

Description

Propel loaded 1.8-liter commercial fleet chassis across punishing interstate transit corridors under 175 PSI cranking compression force without detonation or thermal fade during fleet transit via the Scion 2ZRFE 1.8L Remanufactured Engine. Built under casting designation 41797 for Scion xD platforms, this 16-valve Dual VVT-i four-cylinder engine provides exceptional fuel efficiency across intensive urban distribution schedules.

High-pressure die-cast aluminum block architecture contains centrifugally cast iron dry sleeves honed to an Ra 25 micro-inch deck surface finish. A precision-balanced forged steel crankshaft rotates within a structural lower bedplate, driving forged steel connecting rods and coated skirt hypereutectic pistons. Sump capacity measures 4.4 quarts in a cast aluminum pan, while high-velocity oil passages ensure prompt lubrication distribution across an overall dry engine mass of 235 lbs.

Key Features of Scion 2ZRFE

Fleet operators buy Scion 2ZRFE remanufactured engine packages to maximize vehicle utilization rates and minimize fuel expenditure. Automated dyno cell testing ensures exact variable valve timing operation and balanced combustion compressions under full load.

• Dual VVT-i continuously regulates intake and exhaust camshafts for broad-band torque and fuel savings
• Double overhead camshafts operate sixteen valves via roller rocker arms for reduced friction
• Multi-layer steel cylinder head gaskets maintain combustion seals against continuous thermal cycles
• Plateau diamond honed cylinder bores eliminate piston ring blow-by and oil vapor emissions
• High-flow internal trochoid oil pump provides 50 PSI cruising lubrication to protected bearings
• Cast-aluminum structural oil pan enhances engine block rigidity and reduces driveline vibration
• Scion 2ZRFE long block units pass rigid non-destructive ultrasonic flaw testing

Operational Output Thermal Limits

This motor outputs 128 horsepower at 6000 RPM alongside 125 lb-ft continuous torque at 4400 RPM using a 10.0:1 compression ratio. Dynamic cylinder cranking compression tests between 170 and 185 PSI across all four cylinders. Normal coolant operating temperatures hold between 185°F and 205°F, supported by 18 PSI hot idle oil pressure and 50 PSI cruising pressure. Radiator thermal rejection capacity measures 2200 BTU per minute under Severe Commercial Fleet duty cycle standards.

Flywheel Crankshaft Interface Specs

The rear crankshaft flange uses a six-bolt flywheel mounting pattern with an engineered 0.826-inch pilot counterbore diameter. Front crankshaft snout measures 1.023 inches with a precision friction-washer damper interface. Dial indicators measure crankshaft axial thrust endplay between 0.003 and 0.007 inches across all finished builds.

Commissioning Steps Maintenance Rules

Technicians must prime internal engine oil passages with an external pressure tank before turning the ignition key to protect fresh bearing surfaces from dry friction. Conduct a twenty-minute cam run-in procedure at 2000 RPM using high-zinc break-in lubricant. This engine is not engineered for aftermarket turbochargers, nitrous systems, or trailer towing weights exceeding vehicle chassis ratings.

• Inspect fluid reservoirs and accessory belts each shift
• Change motor oil and replace spin-on filter every 4500 miles
• Inspect cooling system hoses and radiator every twelve months

Fleet Guarantee Package Manifest

Supported by our 3-Year 100000-Mile commercial fleet warranty for verified transport operations. The heavy wooden container holds the remanufactured long block engine, high-capacity oil pump, complete engine install gasket kit, spark plug tube seals, and a certified dynamometer qualification inspection report.