Toyota Car Parts - A Series Engines

The first obvious difference are the valves, the engine's intake and exhaust valves were placed 22 The next major modification was the high-performance 4A-G, with the fuel injected version, the 4A-GE, being the most powerful Toyota increased the compression ratios from 9·4:1 to 10·3:1 The engine was succeeded by the 3ZZ-FE, a 1·6-liter engine with VVT-i technology Toyota designed this engine with fuel economy in mind Although it is to be noted that more modern high reving engines have since closed up the valve angle to 20 to 25 degrees which is now believed to be ideal for high reving engines with high power per litre The only exception was the US-market 1990-91 Geo Prizm GSi, which was equipped with the MAP 5 L. Toyota models that had this engine:
Corolla AE85 (JDM)
Carina AA60The 4A was produced from 1980 through 1998 It was extremely light and strong for a production engine using an all-iron block, and produced 112 hp (84 kW) at 6600 rpm and 97 ft·lbf (131N·m) of torque at 4800 rpm in the American market The 4A-GE was one of the earliest inline-4 engines to have both a DOHC 16 valve configuration (four valves per cylinder, two inlet, two exhaust) and electronic fuel injection (EFI) 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) The 1987–1998 4A-FE is the descendant of the carbureted 4A-F Toyota models that have had this engine:
Toyota MR2 AW11: Mid-engine RWD
Corolla AE85/AE86 GT-S: RWD (often referred to as generic AE86 chassis group)
Corolla AE82 FX-16: FWD
Corolla AE92 GT-S: FWD
SE Sedan (North America): (RWD from 1983-87 and FWD from 1988-91)
Some Celicas 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 There were California-spec (3A-C), Japan-spec (3A-U), transverse (3A-L), and swirl-intake (3A-S) versions of the same basic design. Cylinder bore was 76 mm (2·99 in) and stroke was 71·4 mm (2·81 in). The 4A-GE was first introduced in the 1983 Sprinter Trueno AE86 and the Corolla Levin AE86 sports version Torque was less spread from 75 ft·lbf (101 N·m) at 2800 rpm to 89 ft·lbf (120 N·m) at 4000 rpm. 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 While the port cross section was suitable for a very highly modified engine at very high revs it caused a considerable drop in low down torque due to the decreased air speeds at those revs It is visually similar to the first-generation engine and the power output is unchanged, but the upper cam cover now featured red and black lettering 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 first-generation 4A-GE which was introduced in 1983 replaced the 2T-G in most applications The 4A-GE engines for the 1985 model year are referred to as 'blue top' as opposed to the later 'red top' engines, because the paint color on the valve covers is different, to show the different engine revision, using different port sizes, different airflow metering, and other minor differences on the engine Power rating varies during certain generations that had the engine The second generation engine was produced from 1992 until 1998 To compansate for the reduced air speed the first-generation engines included the TVIS feature, in which dual intake runners are fitted with butterfly valves that opened at approximetly 4200 RPM Production of the various models of this version lasted for five generations, from 1983 through 1991 for 16-valve versions and the 5-valve 4A-GE lasted through 1998
Other models equipped with the 4A-GE:
Chevrolet Nova (based on Toyota AE82 chassis; 1984–1988—these 4A-GE cars were exceptionally rare)
Geo Prizm GSi (based on Toyota AE92 chassis; 1990–1992) New performance parts are still available for sale even today because of its strong fan base The effect was that at lower revs where the airspeed would normally be slow, four of the eight runners were closed, this forced all the engine to draw in all its air through half the runners in the manifold It was a 2-valve SOHC like the 1A and 2A. Numerous variations of the basic 4A design were produced, from SOHC 2-valve all the way to DOHC 5-valve versions. All 4A engines have a displacement of 1·6 L (1587 cc). The 1·5 L (1452 cc) 1A was produced in 1978 and 1979. Also of note the pistons were changed to accept a 20mm fully floating gudgen pin unlike the 18mm pressed in pins of the earlier versions The 4A-F used a carburetor, while the 4A-FE used electronic fuel injection system (notice the 'E'). This engine used a modified 16-valve head and produced approximately 240 horsepower at 8400 rpm To correct the air-speed problems of the earlier genrations of engine the heads inlet ports were redesigned to have smaller cross section inlet ports, and hence has been nickanmed as the 'smallport head' Production of the first-generation engine model lasted through 1987 Toyota designed the engine for performance; the valve angle was a relatively wide 50 degrees, which at the time was believed to be ideal for high power production. The AE86 marked the end of the 4A-GE as a rear wheel drive (RWD or FR) mounted engine, alongside the RWD AE86/AE85 coupes a front wheel drive (FWD or FF) corolla (the AE82) was produced and future Corollas/Sprinters were all based around the FF layout The second-generation 4A-GE produced from 1987 to 1989 featured larger diameter bearings for the con-rod big ends (42mm) and added four additional reinforcement ribs on the back of the engine block, for a total of seven Cylinder bore was enlarged from the previous 3A engines at 81 mm (3·19 in), but stroke remained the same as the 3A at 77 mm (3·03 in). Power output ranged from just 62 hp (46 kW) at 4800 rpm all the way to 90 hp (67 kW) at 6000 rpm. Applications:
1992 Toyota Corolla Levin, Sprinter Trueno AE101 (silver top): All GT models (GT Apex, GT-V etc)
1995 Toyota Corolla Levin, Sprinter Trueno AE111 (black top): All BZ models (BZG, BZR, BZV etc) Toyota sponsored the Champ Car Atlantic Championship from 1990 to 2005 Only the AE86 version carried the 4A-GE engine and GT-S designations in the US In other markets, other designations were used It is speculated that the 4A-GE is actually a road-going version of the Ford Cosworth BDA racing engine, reverse engineered by Toyota as the bore and stroke dimensions are similar and there are many similarities in the engine design, making it a reliable engine for motorsports applications. This engine was identifiable via silver cam covers with the lettering on the upper cover painted black and blue, as well as the presence of three reinforcement ribs on the back side of the block. Output ranged from 65–75 hp (48–56 kW) at 5400–6000 rpm and 72–79 ft·lbf (97–107 N·m) at 3600 rpm. During rising engine speed, a slight lurch can occur at the crossover point and an experienced driver will be able to detect the shift in performance. The A Series engines are a family of straight-4 internal combustion engines with displacement from 1·3 L to 1·8 L produced by Toyota Motor Corporation. 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. The TVIS feature is maintained. The series has cast iron engine blocks and aluminum cylinder heads. An AE85 chassis code may be a base model Corolla, or an SR-5, with a 4A-C engine. This enabled the the torque curve to still be intact at lower engine speeds, allowing for better performance across the entire speed band and a broad, flat torque curve around the crossover point. The 1·3 L (1295 cc) 2A was produced from 1979 through 1986. It was a 2-valve SOHC design like its predecessor.

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