The previous 16-valve head used a sharply curved intake port, while the 20-valve engine used a very upright straight port. After all that upgrading, the 4AGE capacity is 160 horsepower at 7,400 rpm. There are three generations of this engine and can be identified by the external shape of the engine. The blacktop however has all the unnecessary sections of the outer lip machined off to reduce the weigh at its most influential point. The air flow sensor was replaced by a MAP sensor, the diameter of the four individual throttle bodies was increased from 43 to 45 mm (1.69 to 1.77 in), the exhaust ports diameter were increased by 3 mm, the intake cam lift was increased from 7.9 to 8.2 mm (0.31 to 0.32 in), and the intake ports were significantly improved in shape and contour, with the width of the opening at the head increased as well. – Conversion notes: It is possible to convert a 16V / 20V Silvertop crank pulley to be partially compatible with a Blacktop by machining 1.7mm of the rear center face, however the outer row will not be compatible due to the difference in distance between the two rows. with a torque of 162 Nm (119 lb•ft) at 5,200 rpm. The American Spec AE86 (VIN AE88, or GT-S) carried the 4A-GE engine. A smaller 1,498 cc (1.5 L) 5A-F was produced in 1987 and the fuel injected 5A-FE was produced that year and again from 1995 through 1998. Please see “Camshafts belt tensioners”, “Camshafts” and “Camshafts belts” for more information. The first generation (1987–1996) featured a plate on the head which read "16 valve EFI" and fuel injectors in the head. No need to worry about your battery, lights, or electrical system when the NST kit is used. – Belt width: Unlike all the other models of 4age belt that use a 19mm belt the Blacktop belt is wider at 21mm. This engine produces 115 kW (155 hp; 157 PS) at 7,400 rpm with 16.5 kg⋅m (162 N⋅m; 119 lbf⋅ft) of torque at 5,200 rpm. Please see “Throttle bodies” for more information. PLEASE NOTE: Due to the high volume of orders that we are currently experiencing there may be a delay of up to a 2 weeks before an order is dispatched. The 4AGE has been available in a number of forms. This engine has the silver cam covers with the words only written in red, hence the nickname "red top". The Silvertops have a simple round machined opening at the same 43mm diameter of the blade / throttle center bore while the Blacktop has more of a kidney shape to suit the different manifold (see “Inlet manifold”). Output was 61 kW (82 hp; 83 PS) and 11.9 kg⋅m (117 N⋅m; 86 lbf⋅ft). The Silvertop is identical to all previous A-series engines made before it in that it uses a simple and reliable sprung idler wheel to keep tension on the belt. Bookmarks. Introduction: The 20 valve version of the 4A-GE engine appeared on the 1992 Corolla Levin and Sprinter Trueno in Japan. – Conversion notes: While the throttle bodies can be swapped in terms of being able to be bolted down they have other incompatibility issues resulting from the different inside / outside profiles on both ends and different velocity stack mounting. Likewise, an unofficial supercharged "7A-GZE" has also been built from 7A-FE parts (block, crank), 4A-GZE parts (head, pistons) and custom connecting rods. 20v 4A-GE Blacktop Information. – Belt length: To allow for the different cam belt tensioner (see “Camshafts belt tensioner”) the Blacktop cam belt is one tooth shorter at 110 compared to the 111 of the Silvertop. All variants were belt-driven eight-valve counter-flow SOHC engines but no longer used Toyota's "Turbulence Generating Pot" pre-combustion system from the 1A. This enabled 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. A 1.3 L (1,342 cc) 8A is now produced by Tianjin FAW Xiali for its Daihatsu and Toyota-based subcompacts. Post Cancel. The version now produced by Xiali produces 100 hp (75 kW) at 6000 rpm and 13.3 kg⋅m (130 N⋅m; 96 lbf⋅ft) at 4400 rpm. 4AGEU is Toyota's A Engine. Also of note, the pistons were changed to accept a 20 mm (0.79 in) fully floating gudgeon pin unlike the 18 mm (0.71 in) pressed-in pins of the earlier versions. Peak Horsepower (@ RPM): 112 hp @ 6,600 RPM, 157 hp @ 7,400 RPM (20V), 167 hp @ 7,400 RPM (4A-GZE) Peak Torque (@ RPM): 97 lb-ft @ 4,800 RPM, 119 lb-ft @ 5,600 RPM (20V), 155 lb-ft @ 5,600 RPM (4A-GZE) Pistons/Compression Ratio: 9.4:1, 10.3:1, 10.5:1 (20V) Block Material: Iron: Head Material: Aluminum: Camshafts: All-motor, totally unstreetable, but it's a 4A-GE, so... "Crush enemies, see them driven before you, and hear the lamentation of the women!" 4A-GE Gen 5 20V “Black Top” (1995 – 1998) is the last 4AGE-type. Most notable feature of this new 4A-GE at the time was the use of 3 valves per cylinder on the intake side, making a total of 5 valves per cylinder. The original 1A engine was only 550 mm (21.6 in) long. The later one produced 75 kW (100 hp; 100 PS) at 5600 rpm and 14.1 kg⋅m (138 N⋅m; 102 lbf⋅ft) at 4400 rpm. This reduces the weight down to 5.9Kg. Please see “Throttles”, “Head (Inlet face)” and “Inlet manifold heat insulators” for more information. The 4A-FE is basically the same as the 4A-F (introduced in the 6th generation of Corollas), the most apparent difference being the electronic fuel injection system as noted by the E. The engine was succeeded by the 3ZZ-FE, a 1.6-liter engine with VVT-i technology. The 4A-GE is one of the many variations of the 4A series engine. Some may say “It is Keiichi Tsuchiya’s 86 Engine”. Although the pistons are initially interchangeable physically they aren’t practically as a Silvertop with Blacktop pistons has a very high compression and quite low when the combination is reversed. Pictured on the left is the Silvertop port and the Blacktop port at the right, however the Blacktop head has received some porting to remove sharp edges internally. This engine produces up to 89 kW (120 hp; 120 PS) due to slightly larger throttle than the standard 5A-FE and different cam profiles. I think the old Toyota Formula Atlantic motors put out somewhere around 250-275 hp? 5. Please see the article “Working with VVT” for more information. Aftermarket camshaft fitment notes: When fitting an aftermarket camshaft depending on the amount of lift some material may need to be removed from the head around this area, due to the deeper recesses of the Blacktop heads they are able to have cams with a higher lift fitted before modifications are necessary. This led to a large difference between the combustion chamber volumes where the Silvertop is 35cc (reported by Arias) and the black at 37.8cc (measured by myself). It was used in the supercharged MR2, rated at 145 PS (107 kW; 143 bhp) at 6400 rpm and 19.4 kg⋅m (190 N⋅m; 140 lbf⋅ft) at 4400. This not only raises the airspeed which causes better cylinder filling, but due to the asymmetrical airflow a swirl is created in the combustion chamber, meaning better fuel atomization. For those not using the outer row- for example not using a Blacktop power steering pump or A/C components then there is no issue. This is the single easiest way to identify the model of a throttle set. The combustion chambers between the engines are quite different in terms of their squish area. To compensate for the reduced air speed, the first-generation engines included the T-VIS feature, in which dual intake runners are fitted with butterfly valves that opened at approximately 4,200 rpm. Fuel injection was added. in European versions, the combustion chambers were reformulated in early 1986, resulting in an increase of 2 hp (64 kW (86 hp; 87 PS) at 5600 rpm), along with improvements in fuel economy and emissions. Using Toyota TTC-C catalytic converter. revised 2/28/2002. The largest production A-series engine was the 1,762 cc (1.8 L) 7A-FE. This visually gives the appearance of not being any dampening feature at all when they certainly do. Nothing like the brap of lumpy cams. – Blade / butterfly diameters: While both engines have round throttle blades, however the Blacktop throttle blades are larger at 45mm compared to the 43mm of the Silvertop.
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