Sports car restorers battle cracked cylinder heads and timing belt failure before choosing this Nissan 300ZX VG30 Remanufactured Engine. Each 3.0L 6-Cylinder 12-Valve SOHC power plant features casting V52 block metallurgy with dedicated 2-boss motor mount geometry. Technicians must perform an engine oil prime and execute an exact 500-mile break-in oil service to protect rocker arm contact pads.

Manufactured with cast iron block casting V52, this engine block features the original 2-boss motor mount configuration dedicated to Z31 sports car crossmembers. The rotating foundation features a short-snout micro-polished forged steel crankshaft, forged connecting rods, and oversized hypereutectic pistons. SOHC cylinder head casting V52 receives diamond deck milling for head gasket retention. Net dry weight totals 240 lbs inside crated dimensions of 36in length by 36in width by 36in height. Engine oil sump capacity holds 4.5 quarts.

Key Features of Nissan VG30

Classic car mechanics buy Nissan VG30 remanufactured engine long blocks to restore smooth 6-Cylinder power and eliminate oil burning. This long block replacement provides factory-matched machine tolerances for classic Z31 sports car engine bays.

- Block casting V52 features specific 2-boss motor mount castings for classic sports car crossmember brackets.
- Pre-installed timing belt and mechanical tensioner eliminate valvetrain setup errors during initial installation.
- Short-snout micro-polished crankshaft journals eliminate runout to protect bi-metal bearings under load.
- Diamond plateau honed cylinder walls establish an Ra 15 micro-inch crosshatch finish for ring seating.
- Align-honed cast iron main bearing saddles support smooth crankshaft rotation under high engine speeds.
- Multi-layer composite cylinder head gaskets prevent combustion gas blow-by across aluminum cylinder heads.
- New high-grade cylinder head bolts supply uniform clamp loads across all 6 combustion chambers.

Dyno Load Precision Machining Tolerances

Dyno cell testing validates mechanical oil gallery pressurization and power output prior to packaging. The 3.0L 2960cc SOHC V6 outputs 160 HP at 5,200 RPM and 173 ft-lbs of shaft torque at 3,600 RPM. Main journal oil clearance holds between 0.0011in and 0.0015in, while connecting rod clearance measures 0.0012in. Individual cylinder compression gauges verify 180 PSI across all 6 cylinders. Hot engine oil pressure maintains 55 PSI at 3,000 RPM with regulated coolant temperatures steady at 190°F.

Vehicle Fitment Drivetrain Guide

This engine fits 1984 to 1987 Nissan 300ZX sports cars equipped with the 3.0L 2960cc VG30 engine, block casting V52, short crank snout, and 2-boss motor mount pattern. Compatible drivetrains include rear-wheel drive paired with a 5-Speed manual or 4-Speed automatic transmission. This long block does not fit 4-boss mount truck platforms, Maxima front-wheel-drive sedans, or post-1987 long-snout VG30E engines due to crossmember bracket and crank damper differences.

Installation Protocol Service Requirements

Technicians must inspect engine crossmember mount brackets for 2-boss fastener spacing, check harmonic balancer snout depth, and purge cooling system air pockets during engine install. Operational warnings restrict deployment in custom turbo systems exceeding 6 PSI boost on stock pistons or road racing chassis lacking oil coolers.

- Pre-fill the oil filter and prime engine lubrication passages with 10W-30 conventional motor oil.
- Drain initial break-in oil and install a replacement oil filter at the 500-mile service point.
- Inspect mechanical valvetrain lash and check timing belt tensioner locknut torque at 1,500 miles.

Warranty Terms Core Return Policy

Our remanufactured long block comes backed by a standard 3-Year Unlimited-Mile warranty for reliable road service. We provide free prepaid return freight shipping for your original rebuildable core within 30 days of arrival. The crate includes the remanufactured long block, pre-installed timing belt, tensioner, oil pan, and valve covers.