Difference between AFE & AGE engines

[PLM]

Hi All,

Just wondering if anyone can tell how I would be able to tell the difference between an AFE engine and a AGE engine and which models of Corolla's each engine was fitted to? I know that they have different valve displacement however how else can you tell by just looking at normal engine specs?

Edited May 27, 2010 by PLM

[DreadAngel]

Straight off Wiki (Read at your own peril)

Toyota A 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 RPM means that it has about 10% less power compared to the 4A-GE engine. This engine design improves fuel efficiency and torque, but compromises power. Power rating varied from 100–105 hp in the US market. Late-model engines are rumored to make slightly greater power but still received a 105 hp rating.

The two generations of this engine can be identified by the external shape of the engine. The first generation (1987–1993) featured a plate on the head which read "16 valve EFI" and fuel injectors in the head. The second generation had a higher profile cam design in the head, a cam cover with ribs throughout its length, and fuel injectors in the intake manifold runners. Mechanically, the late-model motors received MAP load sensing and redesigned pistons, intake ports, and intake manifold. The second generation engine was produced from 1992–1998 (1993–1997 in the US).[1]

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 more power. The engine was succeeded by the 3ZZ-FE, a 1.6-liter engine with VVT-i technology."

[Hiro]

Or, if you're short of time or attention span, here it is in picture form

Series 1 4AFE

Series 2 4AFE

Bigport TVIS 16V 4AGE

Smallport 16V 4AGE

Silvertop 20V 4AGE

Blacktop 20V 4AGE