Toyota 1GRFE 4.0L V6 Remanufactured Engine – 42956

Description

Prevent oil gallery pressure drops and eliminate dual variable valve timing gear chatter under 266 lb-ft continuous pulling torque during grueling vocational fleet shifts without power loss through the Toyota 1GRFE Dual-VVT Remanufactured Engine. Built under casting tag 42956 for 4Runner and FJ Cruiser commercial fleets, this 24-valve Dual VVT-i V6 platform delivers exceptional high-load endurance.

Reinforced die-cast aluminum block architecture integrates centrifugally cast iron dry sleeves honed to an Ra 25 micro-inch deck surface finish. A precision-balanced forged steel crankshaft rotates within line-honed main bearing saddles, driving forged steel connecting rods and hypereutectic pistons with graphite skirt coatings. Sump capacity measures 6.0 quarts in a cast aluminum oil pan, while high-velocity oil passages protect quad camshafts across an overall dry engine mass of 375 lbs.

Key Features of Toyota 1GRFE Dual-VVT

Fleet operators buy Toyota 1GRFE Dual-VVT remanufactured engine packages to restore high-output powertrain reliability and prevent roadside failures. Automated dyno cell testing ensures exact dual 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
• Roller rocker arm valvetrain reduces friction and eliminates camshaft follower wear under load
• 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 55 PSI cruising lubrication to protected bearings
• Induction-hardened valve seat inserts resist wear under prolonged continuous fleet operation
• Toyota 1GRFE Dual-VVT long block units pass rigid non-destructive ultrasonic flaw testing

Dynamic Torque Thermal Boundaries

This V6 engine produces 270 horsepower at 5600 RPM alongside 278 lb-ft continuous torque at 4400 RPM using a 10.4:1 compression ratio. Dynamic cylinder cranking compression tests between 175 and 185 PSI across all six cylinders. Normal coolant operating temperatures hold between 185°F and 205°F, backed by 20 PSI hot idle oil pressure and 58 PSI cruising pressure. Radiator thermal rejection capacity measures 3600 BTU per minute under Severe Commercial Fleet duty cycle standards.

Crankshaft Flange Alignment Geometry

The rear crankshaft flange uses an eight-bolt flywheel mounting pattern with an engineered 1.259-inch pilot hole dimension. Front crankshaft snout measures 1.250 inches with a precision keyway for timing drive location. Dial indicators measure crankshaft axial thrust endplay between 0.003 and 0.007 inches across all finished builds.

Break-In Protocol Servicing 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 superchargers, 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 5000 miles
• Inspect timing chain tensioner and guides 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.