FA20 Engine
2.0L FA20 motor is a common venture of Subaru and Toyota (4U-GSE). FA20 was employed for Subaru BRZ coupe car while Toyota utilized 4U-GSE for Toyota 86 and Scion FR-S.
This motor is built on a framework of FB20. It features an absolutely restyled bottom. Fresh crankshaft, rods and pistons were employed. The motor has a square shape, having identical bore and stroke sizes and reaching 1:1 bore/stroke proportions. In comparison with FB20, compression index is bigger and equals to 12.5:1. Intake and exhaust camshafts feature AVCS system. Toyota contributed its direct fuel injection system D4S. Steel 4-2-1 exhaust manifold was utilized for exhaust system. Besides, it is available in FA20D version, a 2.0L naturally aspirated non-turbo motor with output of 200 hp at 7,000 rpm and a torque of 151 lb-ft.
FA20 engine specs
| Manufacturer | Gunma Oizumi Plant |
| Also called | Subaru FA20 |
| Production | 2012-present |
| Cylinder block alloy | Aluminum |
| Configuration | Flat-4 |
| Valvetrain | DOHC 4 valves per cylinder |
| Piston stroke, mm (inch) | 86 (3.39) |
| Cylinder bore, mm (inch) | 86 (3.39) |
| Compression ratio | 10.6 12.5 |
| Displacement | 1998 cc (121.9 cu in) |
| Power output | 147 kW (200 HP) at 7,000 rpm 186 kW (253 HP) at 5,600 rpm 200 kW (272 HP) at 5,600 rpm 221 kW (300 HP) at 5,600 rpm |
| Torque output | 205 Nm (151 lb·ft) at 6,400-6,600 rpm 350 Nm (258 lb·ft) at 2,000-4,800 rpm 350 Nm (258 lb·ft) at 2,000-5,200 rpm 400 Nm (295 lb·ft) at 2,000-4,800 rpm |
| Redline | 7,400 (N/A) 6,700 (Turbo) |
| HP per liter | 100.1 126.6 136.1 150.1 |
| Fuel type | Gasoline |
| Weight, kg (lbs) | – |
| Fuel consumption, L/100 km (mpg) -City -Highway -Combined |
Subaru BRZ 10.4 (22) 6.4 (37) 7.8 (30) |
| Turbocharger | Naturally aspirated Garrett MGT2259S (FA20DIT) |
| Oil consumption , L/1000 km (qt. per miles) |
up to 1.0 (1 qt. per 600 miles) |
| Recommended engine oil | 0W-20 5W-20 5W-30 (FA20DIT) 5W-40 (FA20DIT) |
| Engine oil capacity, L (qt.) | 6.3 (6.7) 5.1 (5.4)- FA20DIT |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Normal engine operating temperature, °C (F) | – |
| Engine lifespan, km (miles) -Official information -Real |
– 200,000+ (120,000) |
| Tuning, HP -Max HP -No life span loss |
500+ – |
Engine Modifications
FA20DIT, FA20F and FA20E are turbo versions of FA20 used as alternatives to EJ205 and EJ207. These models have aluminum pistons with lower compression index of 10.6:1, restyled heads, contributing to better airflow, and advanced combustion chambers. Camshafts of these turbocharged motors have additional functions and contain plastic intake manifold with tumbler generator valves. Twin Scroll turbocharger Garrett MGT2259S generates 1.1 bar pressure (1.5 bar in over-boost mode). Output is 272 hp at 5,600 rpm and a torque of 258 ft-lb.
Applications
- 2017+ Subaru BRZ/Toyota GT86 (manual transmission)
- 2012+ JDM Subaru Legacy 2.0GT DIT and 2014+ Subaru Levorg
- 2014+ USDM Subaru Forester XT
- 2014+ JDM Subaru Forester XT
- 2015+ USDM Subaru WRX
FA20 Engine Problems and Reliability
- Rough idling. The most possible reason is malfunction of engine control unit software. It’s advised to get fresh software for control unit.
- Motor stops to function. You need to examine cam gear. Its improper functioning decreases pressure of engine oil.
To increase durability and efficiency of FA20 motor, it’s necessary to use only high quality fuel as it influences engine’s lifespan. Besides, it’s advisable to buy only good quality engine oil and change it more often than Subaru recommends.
Written by Dan Hoffman
