VEGE DA21 4.2L 258ci High Output Long Block Remanufactured Crate Engine

Description

Need high-torque vintage rock crawling propulsion? Select the VEGE DA21 Remanufactured Crate Engine high-output long block package. Displacing 4.2L across 258ci in an inline six-cylinder format, this motor generates 130 BHP at 3400 RPM and 225 lb-ft torque at 2000 RPM. Engineered for performance induction, it repowers utility rigs with aggressive low-end crawl power and sustained highway speed.

A deep-skirt cast iron engine block features precision bored cylinders measuring 3.75 inches with a 3.895-inch stroke. The rotating group features a heat-treated nodular iron crankshaft, shot-peened forged connecting rods, and high-compression hypereutectic aluminum pistons. Cylinder pressure achieves an 8.8:1 compression ratio for responsive combustion. A 6.0-quart steel rear-sump oil pan maintains continuous oil pickup. Dry engine mass checks in at 440 lbs, preserving balanced truck handling.

Key Features of VEGE DA21

Off-road trail rig builders buy VEGE DA21 crate engine packages to recondition vintage four-wheel-drive vehicles without custom fabrication costs. Each remanufactured unit receives blueprinted bearing clearances, multi-angle valve seat profiling, and upgraded multi-layer steel head gaskets for sustained high-load operation.

• 3.75-inch cylinder bores feature diamond plateau honing to seat piston rings fast.
• Performance camshaft grinds expand intake and exhaust air volume across mid-range RPM bands.
• 45mm intake valves and 38.5mm exhaust valves provide smooth air velocity through cast iron heads.
• 56cc combustion chambers prevent pre-ignition knock on regular or premium pump gasoline.
• Multi-layer steel head gaskets seal combustion fire rings under high thermal loads.
• High-rate valve springs inside the VEGE DA21 valvetrain eliminate valve float at high engine speeds.
• Seven-bearing crankshaft runs on micro-polished tri-metal main and rod bearings.
• Stamped steel rear-sump oil pan clears front drive axle housings and steering linkage.

Combustion Dynamics Dyno Output Specs

The power curve delivers responsive performance between 600 and 4,400 RPM. Peak dynamometer output reaches 130 brake horsepower at 3,400 RPM along with 225 lb-ft torque at 2,000 RPM. Camshaft duration measures 204 degrees on intake and 210 degrees on exhaust at 0.050-inch lift, alongside 0.420-inch valve lift. The motor runs on 87-octane regular or 91-octane premium pump unleaded gasoline. Manifold vacuum measures 19 in-Hg at a smooth 700 RPM idle. Cruising oil pressure stabilizes between 42 and 65 PSI at 2,400 RPM.

Drivetrain Interface Engine Bay Clearance

The rear bellhousing pattern aligns flush to longitudinal manual and automatic truck transmissions. An internal neutral balance crank flange connects straight to production flywheels or torque converter flexplates. Factory engine mount brackets line up with chassis rubber isolators, preserving four inches of clearance to steering boxes and front axle housings.

Break-In Protocol Maintenance Parameters

Pre-lube all engine oil passages with a pressurized tank before initial startup to protect journal bearings and lifters. Fill the crankcase with SAE 10W-30 high-zinc mineral break-in oil and bleed trapped air bubbles from heating circuit hoses. This high-output inline-six motor is not engineered for turbocharger boost conversions exceeding 7 PSI boost, competitive mud racing, or unmetered nitrous oxide injection.

• Run motor at 2,000 RPM for 20 minutes to bed in flat tappet camshaft lobes.
• Drain initial break-in oil and install a fresh oil filter after the first 500 miles.
• Replace crankcase motor oil and inspect all drive belts every 3,000 miles.

Verified Warranty Physical Crate Manifest

A 36-Month / 100,000-Mile nationwide limited warranty provides long-term mechanical protection against defects. The heavy transport crate contains the remanufactured long block, stamped steel oil pan, aluminum timing cover, harmonic damper, stamped valve cover, oil pressure verification report, and an installation instruction handbook.