Toyota Car Parts - A Series Engines

The next major modification was the high-performance 4A-G, with the fuel injected version, the 4A-GE, being the most powerful The 1987–1998 4A-FE is the descendant of the carbureted 4A-F The 4A-GE was first introduced in the 1983 Sprinter Trueno AE86 and the Corolla Levin AE86 sports version The engine was retired from North American Corollas in 1991, although it continued to be available in the Geo Prizm GSi (sold through Chevrolet dealerships) from 1990 to 1992 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 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
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) Toyota designed this engine with fuel economy in mind New performance parts are still available for sale even today because of its strong fan base Torque was less spread from 75 ft·lbf (101 N·m) at 2800 rpm to 89 ft·lbf (120 N·m) at 4000 rpm All 4A engines have a displacement of 1·6 L (1587 cc) 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 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 Power was also extremely varied, from 70 hp (52 kW) at 4800 rpm in the basic California-spec 4A-C to 170 hp (127 kW) at 6400 rpm in the supercharged 4A-GZE 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 Power output ranged from just 62 hp (46 kW) at 4800 rpm all the way to 90 hp (67 kW) at 6000 rpm. This engine has the silver cam covers with the words only written in red, hence the nickname 'red top' 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) 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' 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. 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) The 4A-F used a carburetor, while the 4A-FE used electronic fuel injection system (notice the 'E') All non-US market 4A-GEs continued to use a MAP sensor, while all of the US-market Toyota 4A-GE came with a MAF sensor 3° apart (compared to 50° in the G-Engines). The series has cast iron engine blocks and aluminum cylinder heads. 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 Production of the first-generation engine model lasted through 1987 Only the AE86 version carried the 4A-GE engine and GT-S designations in the US In other markets, other designations were used 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) 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 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 second generation engine was produced from 1992 until 1998. 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. Toyota joint venture partner Tianjin FAW Xiali still produces 1·3 L 8A and recently restarted production of the 5A. The series began in the late 1970s with the 1A, an SOHC engine with a displacement of 1. This engine used a modified 16-valve head and produced approximately 240 horsepower at 8400 rpm The third-generation appeared in 1989 and was in production until 1991 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 An AE85 chassis code may be a base model Corolla, or an SR-5, with a 4A-C engine The TVIS feature is maintained It was a 2-valve SOHC like the 1A and 2A. It was a 2-valve SOHC design like its predecessor. 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 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 first-generation 4A-GE which was introduced in 1983 replaced the 2T-G in most applications. 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. 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. 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. 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. 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. The 1·5 L (1452 cc) 3A was produced from 1979 through 1988. Additional engine modifications to extend life and the reliability included under piston cooling oil squirters, thicker connecting rods and other components The 1·3 L (1295 cc) 2A was produced from 1979 through 1986. 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. Much confusion exists, even among dealers, as to which models contained what equipment, especially since Toyota split the Corolla line into both RWD and FWD versions, and the GT-S designation was only well known as a Celica version at that time The first obvious difference are the valves, the engine's intake and exhaust valves were placed 22. The first generation 4AGE is nicknamed the 'bigport' engine because it had inlet ports of a very large cross sectional area. The plus side of this design is that it improved fuel efficiency and torque, the down side is that it compromises power. 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).

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