Subaru FB20 2.0L Engine: Specs, Problems, Reliability. The 2.0-liter FB20 engine switched out the EJ-series 2.0-liter engine. The FB20 is the totally brand-new flat-four 3rd production engine. Subaru introduced the FB-series engine in 2010. The engine looks rather identical to its own precursor in the beginning glance, yet it has a bunch of adjustments inside.
This engine has the brand new cylinder light weight aluminum block along with lessened piston birthed. The same variation is actually accomplished through raising piston movement (this modification offered a little bit much more torque at low revs additionally). There are actually disproportional connecting poles to always keep outdoor measurements of the engine are actually the same matched up to EJ-series engine.
New cyndrical tube heads are DOHC 4-valve every cyndrical tube heads. The angle in between consumption and exhaust valves was actually reduced to 27 deg (EJ slant was 41 deg). The span in between camshafts are actually much smaller – 104 mm rather 126 mm. That was made possible by relocating to chain-driven camshafts (EJ made use of time district). The slender valve angle and also much smaller birthed provide a lot less unburned gas during cool begin, therefore decreasing exhausts.
Each camshafts, consumption, as well as exhaust, are with adjustable shutoff time unit (Subaru AVCS). The consumption manifold is crafted from plastic material. It has four tumble-generation valves, which controling the consumption circulation to make best use of efficiency via digital management.
Subaru mentioned that they obtained 28% decrease in abrasion reductions by administering light in weight pistons and also attaching poles. The CARBON DIOXIDE exhausts were actually minimized through 4%. Energy usage decline is actually 10%. Therefore, the engine is much more eco-friendly along with the very same energy, and a more comprehensive band of torque compared to the EJ20.
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FB20 Engine Problems and Reliability
The engine consumes oil. It is actually important making use of just Subaru recommended engine oil and also constantly checking oil amount.
Subaru FB20 2.0L Engine: Specs
| Manufacturer | Gunma Oizumi Plant |
| Production years | 2010-present day |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Fuel injection |
| Configuration | Flat-4 (opposed) |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 84.0 |
| Stroke, mm | 90.0 |
| Displacement, cc | 1995 |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 10.5:1 |
| Power, hp | 148 (110 kW)/6200 160 (110 kW)/6000 – Subaru XV Hybrid |
| Torque, lb ft | 145 (197 Nm)/4200 163 (221 Nm)/2000 – Subaru XV Hybrid |
| Engine weight | – |
| Firing order | 1-3-2-4 |
| Engine oil weight | API SM/SN (ILSAC GF-4 or GF-5) 0W20, 5W-30 or 5W-40 |
| Engine oil capacity, liter | 4.8 |
| Oil change interval, mile | 9,000 (15,000 km) or 12 months |
| Applications | Subaru Impreza, Subaru XV, JDM Subaru Forester, Subaru XV Hybrid |
