Vehicle owners battle severe timing chain rattle and rocker arm ejection before installing this Infiniti G20 SR20DE Remanufactured Engine. Each 2.0L 4-Cylinder 16-Valve DOHC long block features align-honed main tunnels and CNC valve seat cutting. Technicians must complete a manual oil pump prime and execute an exact 500-mile break-in oil service to protect hydraulic lash adjusters from premature collapse.

Manufactured with aluminum block casting 53J, this design features cast iron cylinder sleeves align-honed for strict crankshaft centerlines. The rotating group features an 8-counterweight micro-polished forged steel crankshaft, forged connecting rods, and lightweight hypereutectic pistons with anti-scuff skirt coatings. Cylinder head casting 94Y features low-port intake runners diamond-surfaced for multi-layer steel head gasket retention. Dry weight measures 240 lbs within crated dimensions of 36in length by 36in width by 36in height. Oil pan capacity equals 3.7 quarts.

Key Features of Nissan SR20DE

Performance tuners and repair facilities buy Nissan SR20DE remanufactured engine long blocks to restore legendary high-revving throttle response and mechanical durability. This long block replacement provides factory-matched tolerances for front-wheel-drive sport compacts.

- Cylinder head casting 94Y receives CNC multi-angle valve seat cutting to maintain 0.001in runout.
- Hydraulic lash adjusters undergo ultrasonic cleaning and pressure bench bleeding to eliminate valvetrain noise.
- Diamond plateau honed cylinder sleeves provide an Ra 14 micro-inch finish for fast ring seating.
- Micro-polished crankshaft journals eliminate runout to protect tri-metal bearings from hydrodynamic breakdown.
- Align-honed main bearing girdles preserve bore roundness under sustained high engine speeds.
- Multi-layer steel head gaskets ensure combustion chamber seal integrity under elevated cylinder pressures.
- New high-grade cylinder head bolts supply uniform clamp loads across the aluminum block deck.

Dyno Load Operational Tolerances Specifications

Dyno cell testing validates internal oil gallery pressurization and power output prior to packaging. The 2.0L 1998cc DOHC engine produces 140 HP at 6,400 RPM and 132 ft-lbs of shaft torque at 4,800 RPM. Main journal oil clearance holds between 0.0010in and 0.0014in, while connecting rod clearance measures 0.0011in to 0.0014in. Individual cylinder compression gauges verify 185 PSI across all 4 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 1993 to 1999 Infiniti G20, 1993 to 1994 Nissan Sentra SE-R, and 1995 to 1998 Nissan 200SX SE-R models carrying VIN Code C with block casting 53J and head casting 94Y. Drivetrains require front-wheel-drive manual or automatic transaxles. This unit does not fit high-port 1991 to 1993 53J head casting variants, rear-wheel-drive Silvia S13/S14 chassis, or turbocharged SR20DET platforms due to oil pickup, distributor mounting, and intake runner divergence.

Installation Protocol Service Requirements

Technicians must inspect distributor drive indexing, check oil pump drive collar engagement, and verify hydraulic lash adjuster bleed status during installation. Operational warnings restrict use in custom turbo applications exceeding 7 PSI boost on stock compression pistons or track chassis lacking auxiliary oil coolers.

- Pre-fill the oil filter and prime internal oil galleries with 5W-30 synthetic blend oil.
- Drain initial break-in oil and install a replacement oil filter at the 500-mile maintenance mark.
- Check ignition base timing with a timing light and retorque rocker cover fasteners at 1,500 miles.

Warranty Terms Core Return Policy

This long block includes our standard 3-Year Unlimited-Mile warranty for reliable road service. We provide free prepaid return freight shipping for your rebuildable core engine within a standard 30-day window. The crated assembly contains the remanufactured long block, complete timing drive, oil pan, and valve cover.