VEGE Remanufactured DFZH 4.6L 281ci Premium Grade Long Block Engine

Description

Variable valve timing phaser lock pin shear and valvetrain oscillation vanish upon deploying the VEGE Remanufactured DFZH 4.6L Long Block Engine. Supplying 295HP from its 281ci 8-Cylinder commercial long block repower setup, this unit powers fleet transport equipment. Technicians must check camshaft thrust plate counter-sunk bolt torque prior to installing front timing chains and guides.

Featuring high-strength ASTM A48 Class 35 cast iron with aluminum heads, this structure manages elevated thermal profiles without warping. The VEGE engine core utilizes nitrided camshaft lobes paired with stellite-faced exhaust valves. Starter draw demands 12V 180A at crank. Unrigged dry weight is 505 lbs inside a 28in length, 26in width, 27in height stance holding 6.0 quarts oil.

Key Features of VEGE DFZH

Experienced repair shops buy VEGE DFZH commercial long block configurations to eliminate repeat comebacks from scored cylinder bores. Precision assembly teams enforce certified industrial engine rebuild quality tolerances on every unit.

• Forged micro-alloy steel crankshaft maintains 0.0003in TIR centerline runout across all main journals.
• Variable valve timing phasers receive precision-machined internal lock pins to prevent cold-start rattle.
• Plateau-honed cylinder liners establish immediate compression ring seal during break-in running.
• Precision CNC surfaced block decks yield 0.0002in flatness to preserve cylinder head fire ring integrity.
• High-capacity trochoid oil pump sustains 55 PSI line pressure across demanding fleet highway duty.
• DFZH commercial core layout uses structural webbing along the lower crankcase to arrest chassis vibration.
• Tri-metal copper-lead bearings deliver 0.0015in clearance to control severe hydrodynamic bearing stress.

Dynamometer Calibration Bench Load Data

Automated test cells indicate 295 continuous BHP and 320 ft-lbs torque output at 4500 RPM continuous sweep testing. Instrumentation logs 54 PSI oil gallery pressure at 195°F oil sump temperature, while exhaust gas temp records 1250°F under dyno pull. Gauge checks verify 185 PSI compression across all eight cylinders within 4% variance. Center journal deflection clocks at 0.0003in TIR on the DFZH long block engine.

Chassis Installation Limits Maintenance Rules

Accelerator lever actuation demands 5 lbs pull force on the return spring pivot assembly. This power plant is NOT engineered for transverse vehicle platforms or vehicles equipped with mechanical flat-tappet conversion systems. Field mechanics must follow our strict commercial service maintenance schedule.

• Empty initial break-in lubricant reservoir at 500 miles or 30 run hours.
• Inspect hydraulic lash adjusters for proper oil priming before starting the engine.
• Verify cylinder head bolt clamping torque using factory angle-gauge procedures after initial run.

Warranty Statement Crate Manifest Contents

Production execution adheres strictly to VEGE assembly standard metrics backed by a 3-Year 100,000-mile parts coverage term. Secure shipment includes the rebuilt long block engine, steel oil sump pan, front timing chain cover, valve covers, oil pickup screen, and verified shop dyno printout.