Topic: Toyota 4A-FE Engine
The 1987–1998 4A-FE is the descendant of the carbureted 4A-F. This version, although from the same series and the same generation as the 4A-GE, is different from its "brother" in terms of performance and power. Although both have the same displacement and are DOHC, they were optimized for different uses. The first obvious difference are the valves, the engine's intake and exhaust valves were placed 22.3° apart (compared to 50° in the G-Engines). The second is that it employed a "slave cam system", the camshafts being geared together and driven off one camshaft's sprocket (both camshafts' sprockets on the G-Engine are rotated by the timing belt). Some of the less directly visible differences were poorly shaped ports in the earlier versions, a slow burning combustion chamber with heavily shrouded valves, less aggressive camshaft profiles, ports of a small cross sectional area, a very restrictive intake manifold with long runners joined to a small displacement plenum and other changes. Even though the valve angle is closer to what is considered in some racing circles to be ideal for power (approximately 25 degrees), its other design differences and the intake which is tuned for a primary harmonic resonance at low revs means that it has about 20% less power compared to the 4A-GE. The plus side of this design is that it improved fuel efficiency and torque, the down side is that it compromises power. Power rating varies during certain generations that had the engine.
The difference between the two generations of this engine can be identified by the external shape of the engine, the first generation (1987–1993) have a more rugged look, a plate on the head which read "16valve EFI", and the fuel injectors in the head. The second generation had a higher profile cams design in the head, the cam cover having ribs throughout its length and the injectors in the intake manifold runners. The second generation engine was produced from 1992 until 1998.
Toyota designed this engine with fuel economy in mind. The 4A-FE is basically the same as the 4A-F (introduced in the previous generation of Corollas), the most apparent difference being the fuel delivery system. The 4A-F used a carburetor, while the 4A-FE used electronic fuel injection system (notice the "E"). Also, the 4A-FE had extra power. The engine was succeeded by the 3ZZ-FE, a 1.6-liter engine with VVT-i technology.
* Engine displacement: 1.6 liters (1587 cc)
* Layout: DOHC Inline-4 (Straight-4)
* Valves: 16, 4 for each cylinder
* Power: 105 hp (77 kW) @ 5800 rpm
(Europe/Japan spec: 115 hp (84 kW) @ 6000 rpm)
* Torque: 101 ft·lbf (137 N·m) @ 4800 rpm
* Redline: 6300 rpm
* Fuel Delivery System: MPFI
Note: power and torque specs are from the 1988–1992 North American Corollas.
Although not as powerful as the 4A-GE, both engines are renowned for the power they produce from such a low displacement (relative to other engines). Toyota engineers had skillfully optimized the power and torque from the company's relatively low-displacement engines.
The engine was used in the Toyota Corolla Sedan from 1988 to 1998 and in the 5th Generation Celica ST models from 1989 to 1993 both in North America and Europe, as well as the Camry from '87 to '91.