Toyota Car Parts - A Series Engines

The 1987–1998 4A-FE is the descendant of the carbureted 4A-F 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 4A-F used a carburetor, while the 4A-FE used electronic fuel injection system (notice the 'E') The plus side of this design is that it improved fuel efficiency and torque, the down side is that it compromises power Toyota models that had this engine:
Corolla AE85 (JDM)
Carina AA60The 4A was produced from 1980 through 1998 Clarification: In the US market, the 4A-GE engine was first used in the 1985 model year Corolla GT-S only, which is identified as an 'AE88' in the VIN but uses the AE86 chassis code on the firewall as the AE88 is a 'sub' version of the AE86 The 1·5 L (1452 cc) 1A was produced in 1978 and 1979. The first-generation 4A-GE which was introduced in 1983 replaced the 2T-G in most applications Additional engine modifications to extend life and the reliability included under piston cooling oil squirters, thicker connecting rods and other components 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 next major modification was the high-performance 4A-G, with the fuel injected version, the 4A-GE, being the most powerful 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) Power output ranged from just 62 hp (46 kW) at 4800 rpm all the way to 90 hp (67 kW) at 6000 rpm 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 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 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 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' 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 Toyota engineers had skillfully optimized the power and torque from the company's relatively low-displacement engines It was a 2-valve SOHC design like its predecessor. 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. Power rating varies during certain generations that had the engine The first generation 4AGE is nicknamed the 'bigport' engine because it had inlet ports of a very large cross sectional area 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 engine was succeeded by the 3ZZ-FE, a 1·6-liter engine with VVT-i technology 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 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 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 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. An AE85 chassis code may be a base model Corolla, or an SR-5, with a 4A-C engine 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 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). 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 A kit version of the 4A-GE from Toyota Racing Development was used to power Formula Atlantic cars during this period 3° apart (compared to 50° in the G-Engines). 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. 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
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) The only exception was the US-market 1990-91 Geo Prizm GSi, which was equipped with the MAP 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 Also, the 4A-FE had extra power. Cylinder bore was 77·5 mm (3·05 in) and stroke was 77 mm (3·03 in). Cylinder bore was 76 mm (2·99 in) and stroke was 71·4 mm (2·81 in). 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 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 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 Torque was less spread from 75 ft·lbf (101 N·m) at 2800 rpm to 89 ft·lbf (120 N·m) at 4000 rpm. Toyota joint venture partner Tianjin FAW Xiali still produces 1·3 L 8A and recently restarted production of the 5A. 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 Only the AE86 version carried the 4A-GE engine and GT-S designations in the US In other markets, other designations were used 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). 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. The 4A-GE was first introduced in the 1983 Sprinter Trueno AE86 and the Corolla Levin AE86 sports version 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. This raised the airspeed which caused better cylender filling and also better fuel atomisation. 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). 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. Production of the first-generation engine model lasted through 1987. Toyota increased the compression ratios from 9·4:1 to 10·3:1. 5 L. The 1·5 L (1452 cc) 3A was produced from 1979 through 1988.

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