Toyota Car Parts - A Series Engines

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 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 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 It was a 2-valve SOHC design like its predecessor 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' 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 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 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 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 It was a 2-valve SOHC like the 1A and 2A Power rating varies during certain generations that had the 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. 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 Additional engine modifications to extend life and the reliability included under piston cooling oil squirters, thicker connecting rods and other components Cylinder bore was 77·5 mm (3·05 in) and stroke was 77 mm (3·03 in). The 1·3 L (1295 cc) 2A was produced from 1979 through 1986. Toyota engineers had skillfully optimized the power and torque from the company's relatively low-displacement engines 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 series has cast iron engine blocks and aluminum cylinder heads. 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 plus side of this design is that it improved fuel efficiency and torque, the down side is that it compromises power 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 1·5 L (1452 cc) 1A was produced in 1978 and 1979. 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) 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 Although both have the same displacement and are DOHC, they were optimized for different uses. Numerous variations of the basic 4A design were produced, from SOHC 2-valve all the way to DOHC 5-valve versions. The first generation 4AGE is nicknamed the 'bigport' engine because it had inlet ports of a very large cross sectional area The next major modification was the high-performance 4A-G, with the fuel injected version, the 4A-GE, being the most powerful 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 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. 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 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 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 Also, the 4A-FE had extra power.
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 models that had this engine:
Corolla AE85 (JDM)
Carina AA60The 4A was produced from 1980 through 1998. This engine has the silver cam covers with the words only written in red, hence the nickname 'red top' Power output ranged from just 62 hp (46 kW) at 4800 rpm all the way to 90 hp (67 kW) at 6000 rpm. 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. Only the AE86 version carried the 4A-GE engine and GT-S designations in the US In other markets, other designations were used 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 1987–1998 4A-FE is the descendant of the carbureted 4A-F. 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 The third-generation appeared in 1989 and was in production until 1991 5 L. The first-generation 4A-GE which was introduced in 1983 replaced the 2T-G in most applications. The 1·5 L (1452 cc) 3A was produced from 1979 through 1988. The TVIS feature is maintained. 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. An AE85 chassis code may be a base model Corolla, or an SR-5, with a 4A-C engine All 4A engines have a displacement of 1·6 L (1587 cc). 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. 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 first-generation engine model lasted through 1987.

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