7afe vs 4afe

If you have an account, sign in now to post with your account. The cooling system reached the bottom of the intake port first to reduce intake air temperature, improving knock resistance and efficiency. I am in need of a 7afe engine I found what I thought was a 7afe in a 96 corolla it looks exactly like the 7afe I took out of my celica. × The 4A engine series was a 1587 cc (1.6 liter) engine, introduced in 1988, and revised to 4A-FE in 1993; it was mainly used in the Corolla, and was replaced by the ZZ series in the 1998s.The 7A engine series was essentially the same engine, stroked for higher displacement (1.8 liters) and better torque. When the 7A-FE was designed, it was given the same improvements as the 4A-FE, as well as a knock sensor. Just look on the distributor and there should be a sticker that says 7AFE or 4AFE.. It was a compact DOHC engine for good economy and good driving characteristics. Unique to the 7A-FE were two-layer metal head gaskets, and a two-piece oil pan (one piece of aluminum alloy, the other of steel; the upper pan was secured to the cylinder block and transaxle housing). The fuel injection system was changed from a somewhat inefficient all-firing-at-once system to a more modern two-at-a-time system, now just one step away from sequential injection. The fluid inside the fluid chamber reduced the dynamic spring modulus in the high-frequency vibration range and thus increases quietness in the passenger compartment. I am fitting a 4afe into a ae95 i thought the two engines are the same but there is a few differences like knock sensor and a extra port about the size of the ten cent coin below the inlet port for cylinder 1,and what looks like a 7A grey fuel injectors.

Paste as plain text instead, × (adsbygoogle = window.adsbygoogle || []).push({}); The shaft type mount was rotated 90° from the previous mounting position. 16 valves, narrow angle OHC scissor-gear configuration (aka 2 camshafts but only one cam pulley), 16 valves, narrow angle OHC scissor-gear configuration. 7a-fe redlines at 7600 dont know 4a any driveres round here know?

In previous engines, engine coolant from the radiator flowed to the cylinder block first, then to the cylinder head, but the new engine adopts a cooling system in which the intake side is cooled first. 7a-fe produces torque much lower than the 4afe . Cutout may be around 7600 but definitely not redline. The intake air chamber and intake manifold could now be separated to provide easier access to injectors; an equal-length intake manifold was used to reduce intake air noise; and metal gaskets were used for the intake manifold and intake air chamber gaskets to improve seal performance. 4afe vs 5afe v 7afe. Hi guys! More Toyota engines at toyoland • Camry • RAV4 • Corollas at Corolland, Home only 200cc difference but massive response difference. Site Contents. I think i have a 2nd gen 4AFE by accident. The engine control system for the new 4A-FE and 7A-FE engines had the same basic construction and operation as the engine control system in the previous 4A-FE engine. The 4A engine series was a 1587 cc (1.6 liter) engine, introduced in 1988, and revised to 4A-FE in 1993; it was mainly used in the Corolla, and was replaced by the ZZ series in the 1998s.

A plastic region-tightening method was used for cylinder head bolts to eliminate the need for periodical inspection of bolts. Both engines shared a pentroof type combusion chamber, with cross-flow manifolds. i wonder if the 7afe has a lower redline because of extra stroke ??   Pasted as rich text. ahmad.25jadoon (Ahmed Jadoon) 2019-12-13 08:34:11 +0500 #1. In 1993, the 4A-FE was given better intake efficiency through use of upright, small-diameter intake ports in the cylinder head, increased valve lift and intake valve diameter; a rotary solenoid type idle air control valve; and a large aluminum stiffener and vanadium-steel crankshaft to reduce noise and vibration. • History You can find them in 93-96 corolla's. The 4A-FE, by 1993, was producing 105 hp @ 5,800 rpm (75 kW) and 100 lb-ft of torque at 4,800 rpm (136 Nm). Along with the revamping of the intake system, the two resonators in the air cleaner hose were cut to one. For the right-hand engine mount, newly designed: The newly-developed liquid filled compound mount had an insulator filled with a fluid. Display as a link instead, × The 7A engine series was essentially the same engine, stroked for higher displacement (1.8 liters) and better torque. • Contact Us. After the engine coolant cools the intake ports of the cylinder head, it then cools the cylinder block and cylinder head. The shape of the exhaust manifold was changed to match the newly-adopted WU-TWC manifold converter. The torque curve was fairly flat, with a steep, linear horsepower curve. i wonder what the redlines on both of these engines are ?? At the same time, one of the five original engine mounts in the Corolla was dropped, leaving four; but the right-side engine mount were revised, to a cylindrical, shaft-type liquid-filled compound type to reduce vibration and noise. JavaScript is disabled.

A test mode function was added; in the 7A-FE engine, a knocking correction function using a knock sensor was also added. use 4a rods and a ge head thatd be interesting, http://members.optusnet.com.au/~saltheart/corollatrivia.html. • FAQ • Toyotas • News 4a with a 7a crank anyone?? By using this cooling sequence, the intake air temperature is reduced and knocking resistance and volumetric efficiency are improved. Toyota. × The valve details were also changed to match the improved performance. * A 7afe is not just a stroked 4afe, the engines are completly different internally, Pistons are different, Cam profiles are different, Valves are different sizes, 7afe uses a 2 piece oil pan, also the cooling system is different and more efficent on the 7afe then the 4afe's, 7afes cooling system promotes cooler intake temps for better knock resistance and increased volumetric efficency. Any one kindly tell me which engine has better fuel economy . October 22, 2007 in Corolla / Corolla Sportivo Club.   You cannot paste images directly. 7AFEs are gauge-redlined at 6200 rpm.

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The flow of fluid within the orifice increased the damping coefficient and thus suppressed engine vibration. News • The cam profile in the 7a produces peak torque at 2800rpm and peak power at 5600rpm. Timing was changed so that the intake closed at 38° ABDC instead of 34°, exhaust opened at 42° instead of 37°, and exhaust closed at 2° ATDC instead of 3°. 1) 4afe 2) 5afe 3) 7afe For corolla indus 1996 and which engine can easily fit without alteration. You can probably get away with swapping a lot of those parts but you will need a new ECU and probably need to rewire some stuff. 7afe Vs 4afe That 7AFE you mention, I remember reading on this site that it has a 20v head swapped onto it, in effect being actually what the call a 7AGE its not a Toyota engine but by mating the 4AGE head and 7AFE bottom they came up with this name. Switching to a rotary solenoid-type idle control valve meant that the idle-speed adjusting screw could be eliminated.

Discussion Starter • #1 • Mar 10, 2009.

The crankshaft and connecting rod specifications were modified to match the longer piston stroke and higher power output of the 7A-FE engine, and the pistons were made more rigid by modifying the oil return from the slits to 8 holes. Toyota 4A-F and 7A-FE engines: details and photos . NIKICH, If I get this engine will it fit in my 94 celica st will my distributor, manifold, fuel injection system fit this engine will my ecu function proper. The throttle position sensor went from being a point type to a linear type; the oxygen sensor continued without a heater, but a second oxygen sensor was added to check up on the first one; the rpm sensor was chagned form a single pickup coil with 24 teeth to dual four-tooth coils; and the crankshaft position sensor was changed from a single coil with four teeth to a single-tooth coil. In addition to a knock sensor, the 7A-FE had a torque management feature which cut torque while the automatic transmission shifted to minimize harshness. 4a has peak torque at 4800rpm and peak power at 5800. if you get a jap 4afe ecu it will increase revs to 6000 and add an extra 10nm and 10hp.

You can post now and register later. * 7afes fuel cut off is 6800, mate i used to be there everyday. I can get it a lot cheaper than I can get a 7afe.

As for the 7AFE, I have one in my '89 corolla SR5 coupe.. it's a nice engine. In California trim, it produced 100 hp (86 kW). By   Your link has been automatically embedded. • Future In addition, a brace between the head and throttle body was added to reduce vibration.

The intake diameter was increased from 30.0 to 31.0 mm, the exhaust kept the same size at 24.5 mm, and the lift increased from 6.6 to 7.6 (both intake and exhaust). My 4afe has aftermarket ecu so i set the revlimit at 8000. never ran the engine with a stock ecu. Cars • VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. There was originally a cold-start injector in the 4A-FE, but this was eliminated in 1993. Whats the Difference between a 7a-fe and a 4a-fe motor? Engines • I guess its 7AFE but anybody who has tried these practically plz comment. Those corolla's also came with the 4AFE in them. For a better experience, please enable JavaScript in your browser before proceeding.

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