Toyota Car Parts - A Series Engines

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 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 It was a 2-valve SOHC like the 1A and 2A This engine has the silver cam covers with the words only written in red, hence the nickname 'red top' A kit version of the 4A-GE from Toyota Racing Development was used to power Formula Atlantic cars during this period 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 1987–1998 4A-FE is the descendant of the carbureted 4A-F 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 The TVIS equipped model is an ideal candidate for a turbocharging overhaul because it contains the so-called 'big-port head', meaning the head had the large cross sectional area intlet ports 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 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 1·5 L (1452 cc) 1A was produced in 1978 and 1979. 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 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 This raised the airspeed which caused better cylender filling and also better fuel atomisation 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 The use of an air flow meter (MAF) sensor, which restricted air flow slightly but produced cleaner emissions that conformed to the US regulations, limited the power to 112 hp whereas the Japanese model — which used a manifold absolute pressure (MAP) sensor — produced 130 PS (96 kW) Cylinder bore was 77·5 mm (3·05 in) and stroke was 77 mm (3·03 in). The TVIS feature is maintained 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 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 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 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 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 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 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.
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) 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). All 4A engines have a displacement of 1·6 L (1587 cc). Also, the 4A-FE had extra power 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 Toyota increased the compression ratios from 9·4:1 to 10·3:1 Power output ranged from just 62 hp (46 kW) at 4800 rpm all the way to 90 hp (67 kW) at 6000 rpm. The first-generation 4A-GE which was introduced in 1983 replaced the 2T-G in most applications Toyota engineers had skillfully optimized the power and torque from the company's relatively low-displacement engines Toyota designed this engine with fuel economy in mind. The engine was succeeded by the 3ZZ-FE, a 1·6-liter engine with VVT-i technology. 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 This change in the intlet ports negated the need to have the need for the earlier twin runner manifold and was replaced with a single runner manifold 5 L. This engine used a modified 16-valve head and produced approximately 240 horsepower at 8400 rpm 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. This engine revision upped the power to 138 hp (103 kW) at 7200 rpm with a torque of 110 ft·lbf (149 N·m) at 4800 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 Cylinder bore was 76 mm (2·99 in) and stroke was 71·4 mm (2·81 in). New performance parts are still available for sale even today because of its strong fan base. Although both have the same displacement and are DOHC, they were optimized for different uses. The plus side of this design is that it improved fuel efficiency and torque, the down side is that it compromises power. 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. In between, many interesting variations were produced, including one of the first 5-valve engines (the 4A) and the 170 hp (127 kW) supercharged 4A-GZE. An AE85 chassis code may be a base model Corolla, or an SR-5, with a 4A-C engine 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. It was a 2-valve SOHC design like its predecessor. There were California-spec (3A-C), Japan-spec (3A-U), transverse (3A-L), and swirl-intake (3A-S) versions of the same basic design. 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 Toyota joint venture partner Tianjin FAW Xiali still produces 1·3 L 8A and recently restarted production of the 5A. The reliability and performance of these engines has earned them a fair number of enthusiasts and a fan base as they are a popular choice for an engine swap in to other Toyota cars such as the KE70 and KP61. Production of the first-generation engine model lasted through 1987. 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 series began in the late 1970s with the 1A, an SOHC engine with a displacement of 1. The third-generation appeared in 1989 and was in production until 1991. 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. Numerous variations of the basic 4A design were produced, from SOHC 2-valve all the way to DOHC 5-valve versions. It was a 2-valve SOHC engine. 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.

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