Rebuild vehicle fuel economy with this precision machined Mazda 2 ZY 1.5L Remanufactured Engine. Production machine centers align-hone aluminum block casting ZY to restore main bearing journal concentricity within the engine bay envelope. This 1.5L 4-Cylinder 16-Valve DOHC powerplant requires strict manual pre-lubrication of intake camshaft variable timing phasers before initial crank rotation.

High-pressure die-cast aluminum block casting ZY contains centrifugal cast iron cylinder liners honed for thermal stability under sustained engine RPM. A forged steel crankshaft spins on precision tri-metal bearings clearanced to 0.0012in. Aluminum DOHC cylinder heads house sixteen valves operated by direct-acting mechanical tappets and intake variable valve timing. Crated long block weight measures 250 lbs with crated envelope dimensions of 36in length by 36in width by 36in height and holds 4.1 quarts oil.

Key Features of Mazda ZY

Automotive repair facilities buy Mazda ZY remanufactured engine assemblies to restore urban commuter fuel economy and pass state exhaust tests. Technicians install this remanufactured 1.5L long block replacement to eliminate excessive piston slap and oil burning.

- Aluminum block casting ZY receives precision CNC deck resurfacing to secure multi-layer steel cylinder head gaskets.
- Forged steel crankshaft journals receive micro-polishing down to 0.0003in runout to minimize friction wear.
- Intake variable valve timing oil passages undergo ultrasonic cleaning to guarantee oil flow to camshaft advance mechanisms.
- Tri-metal rod bearings maintain 0.0012in oil clearance to preserve hydrodynamic lubrication under high load.
- Diamond plateau cylinder honing creates a 45-degree crosshatch pattern that seats moly rings within 500 miles.
- Aluminum cylinder head castings receive three-angle valve seat cutting to hold 0.001in valve seat runout.
- Threaded brass oil gallery plugs replace factory press balls to eliminate internal oil pressure loss.

Dyno Load Precision Machining Tolerances

Dynamometer testing confirms 100 HP at 6,000 RPM and 98 ft-lbs shaft torque at 4,000 RPM under steady absorption cycles. Quality control technicians verify crankshaft journal runout below 0.0003in TIR while rod bearing oil clearance measures 0.0012in. CNC plateau bore honing holds piston-to-bore clearance at 0.0011in to prevent cold piston scuffing. Operating oil pressure registers 55 PSI at 3,000 RPM while engine coolant stabilizes at 190°F. Precision mechanical compression gauges show balanced readings between 180 PSI and 185 PSI across all four cylinders.

Vehicle Fitment Drivetrain Guide

This remanufactured engine fits 2011 to 2014 Mazda 2 and Mazda Demio subcompact models equipped with the 1.5L 1498cc L4 engine and block casting ZY. It couples with 5-Speed Manual or 4-Speed Automatic front-wheel-drive transaxles featuring variable valve timing on the intake camshaft. This long block assembly does not fit earlier Z5 1.5L Protege engines, modern 1.5L SkyActiv-G high-compression direct-injection vehicles, 2.0L Mazda 3 platforms, or turbocharged MazdaSpeed hatchbacks.

Installation Protocol Service Requirements

Inspect electronic throttle body harness pins and subframe motor mounts before bolting the long block to the transaxle bellhousing. Never install this naturally aspirated street engine into custom forced-induction drag cars or stripped track chassis without auxiliary oil cooling. Technicians must clean intake runners to prevent abrasive debris ingestion.

- Pressure-prime internal oil passages with an external priming tank before ignition fire to protect cam journals.
- Drain the initial break-in oil and install a fresh oil filter at 500 miles.
- Inspect variable valve timing solenoid screens and check drive belts at 3,000 miles.

Warranty Terms Core Return Policy

Our standard 3-Year Unlimited-Mile warranty protects parts and machine shop labor against internal mechanical defects. We coordinate free prepaid freight pickup for your rebuildable core inside a 30-day window. Each crated shipment contains the assembled long block core, pre-installed timing components, oil pan, and valve cover.