Toyota 2AR-FE 2.5L Engine Specs, Problems, Reliability. The 2AR-FE was released in 2008. It pertained to change the 2.4-liter 2AZ engine. The engine consumes less fuel than the predecessor, however the output is on the exact same level. Engineers accomplished such result by applying modern-day innovations in the engine development. Together with the 2.5-liter engine, the producer likewise produces the 2.7-liter engine 1AR-FE.
Like the predecessor, the 2AR engine has aluminum cylinder block with thin cast iron liners inside. The block can not be fixed for this engine. Liners are not changeable. Inside the block, there is created steel crankshaft moved by 10 mm to the exhaust side (a balanced out crankshaft). The crankshaft has 8 counterweights and is completely balanced. The crankshaft drives two balancer shafts through a gear inside the crankcase kill vibrations. The substantial changes remain in the cylinder head.
The head is DOHC 16-valve and made from aluminum alloy. It has hydraulic lifters (the 2AZ has not). There are 2 camshafts, and each of them is equipped with a variable valve timing system called Dual-VVTi. There are roller rockers for the valvetrain. The engine was developed by applying low friction innovations. The pistons utilize reduced-tension piston rings. The oil pump varies and has three-stage of operation.
The ACIS or Acoustic Control Induction System is a variable geometry consumption system. The plastic consumption manifold alters the length of the intake system in two stages by valves in depends on engine rpm and throttle angle. The fuel system got new 12-hole long-nozzle fuel injectors taken full advantage of fuel economy and reduced harmful emissions. The consumption includes a stainless-steel header and catalytic converter.
Toyota established the replacement for the 2AR-FE engine in 2016 – the brand-new 2.5 l engine of the “Dynamic Force Engines” series called as the A25A-FKS.
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Toyota 2AR-FE 2.5L Engine Problems and Reliability
The engine turned excellent. We didn’t find any visible problems or flaws. The engine is included by a knocking noise from the VVTi system when it is cold, but this doesn’t impact reliability and longevity. Cylinder block durability restricts the engine life, and it is about 150-200k miles.
Toyota 2AR-FE 2.5L Engine Modifications
2AR-FSE. Variation with direct fuel injection D4-S and port injection. The cylinder head, cams, pistons and fuel system were redeveloped for this engine. The compression ratio is 13.0:1.
2AR-FXE. The Atkinson cycle variation of 2AR. The compression ratio is 12.5 to 1. This engine was designed to set up into hybrid Toyota and Lexus designs. Output in the Camry hybrid is 154 hp and 153 lb feet of torque.
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Toyota 2AR-FE 2.5L Engine Specs
| Manufacturer | Kamigo Plant Toyota Motor Manufacturing Alabama |
| Production years | 2008-present day |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Fuel injection |
| Configuration | Inline |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 90.0 |
| Stroke, mm | 98.0 |
| Displacement, cc | 2494 |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 10.4 |
| Power, hp | 169-180 hp (126-134 kW)/6,000 |
| Torque, lb ft | 167-173 lb-ft (226-235 N m)/4,000-4,100 |
| Engine weight | – |
| Firing order | 1-3-4-2 |
| Engine oil weight | 5W-30,10W-30 |
| Engine oil capacity, liter | 4.4 |
| Oil change interval, mile | 6,000 (10,000 km) or 12 month |
| Applications | Toyota Camry, Toyota RAV4, Scion tC, Lexus ES300h, Lexus GS300h, Lexus IS300h, Lexus NX300h, Toyota Alphard, Toyota Harrier, Toyota Camry Hybrid, Toyota Avalon Hybrid, Toyota RAV4 Hybrid |