Best Info and Mods on the 4AGE ! Ae86/Ae92/Mr2 owners listen up!

Today we’ll be diving into the best information on the 4AGE! Modifying, sourcing performance parts and much more!!

[@Tuned4Speed]

Wanna learn how to make more than 200hp on your 4AGE!? Check out this video! kzbin.info/www/bejne/hqmopayKdtqUl68

[@crd-nz_001]

I have to add that ditching the standard +7Kg flywheel for something under 5Kg (I got a Jun 4.6Kg many years ago) is a worthy expense. No, a dyno shows no power gains. However, it makes the engine more responsive to throttle changes. It's subtle, but very much there. Yes, it's easier to stall. No, it doesn't cost fuel consumption.

[@Tuned4Speed]

That’s really cool to hear! I definitely advise others to get it as well!

[@pj3635]

There were 3 series of 4age, both came in bigport and small port variants. Probably made up with old stock bits used throughout. AE86 AE82 AE92 - highest output, small port ran tiny ht leads Then there’s also the 4agze. There’s the differences in rib numbers on the blocks which is vital if going turbo

[@Tuned4Speed]

Perfectly well put man

[@babyTOY-YODA777]

Cool video. I must say Honda/Acura V-Tec is in no way similar to Toyota's TVIS system. V-Tec is a oil controlled high cam duration system. TVIS is essentially an intake tumble generator.

[@Tuned4Speed]

Thanks man! And yes your totally right Definitely not the same in that sense but I mean similar as to the goals they share, they’re similar

[@ChroniclesofKToyoda]

..The K20 V-Tec literally does the same thing regardless of if pneumatic or oil actuated, since at lower revs one valve has partial airflow for better low speed mixing, same as TVIS

[@zakuraayame5091]

I have some questions banging around my head ... What is the sacrifice to responsiveness with the stock supercharger and any aftermarket options vs N/A vs twin-scroll (available?) turbo? How much difference in handling does the extra weight of the SC/TC systems make to the overall feel of the car in corners vs N/A? in bad conditions? What are different fuel efficiency expectations out of each option? What are their torque curves off idle up? Does anyone do E85 conversions? what gains/benefits and sacrifices/cons come with it? Has anyone swapped in the new 170 hp 40 mpg corolla engine with the 6-spd manual? Will check out this channel's 4AGE playlist. Still learning about 20V, Blacktop, etc. absorbing information, just starting to dive deep as I've always loved the AW11 MR2 and getting an itch to learn as much as I can with the hopes of finding one that fits me one day or finding a decent project and making one special for me ;) If anyone reads this and wants to suggest good places to learn at any technical depth, please link! :D

[@Tuned4Speed]

Hey!!! I’ll be happy to answer your questions! Do you happen to have an instagram? Make I can shoot all your answers to your questions on there since it’s a lot of questions lol

[@craigadams5454]

I've got a AE92 with redtop small port 16v about to boost it aswell.

[@sunshinez-2017]

have an SR5 Coupe with a 4AF i found 81k mile big port MR2 87 gonna try and swap it any tips ?

[@Tuned4Speed]

Hey! You also posted in the fb ae92 groups about it right? Think I saw it(I’ll shoot you a comment and you can feel free to message me on there if you have more questions or advice you need) Tips I’d advise is try sourcing a 4AGE Gts wiring harness and 4AGE Gts ecu for it, if not you can maybe essentially attempt to maybe run the 4AGE harness and ecu from that mr2 but it might get tricky I haven’t don’t the mr2 4AGE swap myself but I’d imagine you might run into some issues with the wiring harnesses and such I definitely know you aware but just in case you didn’t, if your going fuel injected youll definitely need a Gts fuel tank and chassis wiring for it, fuel lines and etc. Honestly wiring is probably going to be one of your only few issues with this swap But there’s always creative ways to get around these issues as you go through the install feel free to ask and update me on the project

[@Tuned4Speed]

yeah if you can I’d definitely say go with that, a lot easier and less headache tbh, and damn hopefully the Gts owner answers!! And hmm that might be interesting, and might work

[@SweetNinjaSkate]

First gen 4age (bigport) has the lightest internals. It's good for high rpm but that also makes them less resistant Second gen 4age (bigport) has the heaviest internals wich make them really strong but not so good for Quick reving Third gen 4age (small port) has in-between internals. Lighter than second gen but stronger than first gen. Also, smallport has a secondary oil drain in the head Wich help fixing the 4age issue: At high RPM, the oil send more oil than what the oil drain can put back down in the pan. So if you drive over 30 minutes of hard driving such as racetrack driving, you will seize the bottom of your engine. To fix that you just need to let the rpm drop for 30s-1m. Smallport fixed that by adding an external oil drain Also crankshaft pin are larger on the smallport 4age wich make it stronger Honestly you just said the basics in your video ^^

[@Tuned4Speed]

Thanks man definitely appreciate!! Your spot on

[@sparkster_6087]

Bigport 4age's can have the larger 42mm crank pin, that switched sometime in 1987, where toyota changed from the 3 rib blocks to the 7 rib. there is no "generations" of 4age because there is no cutoff date, blocks and cranks were switched around. you could have a 3 rib with a 42mm crank, 7 rib with the 40mm crank, or the other two ways. Really early bigport 4age's had a different casting for the head that flowed slightly better due to better shaping of the port above the valve. In Japan the early bigport head also had more aggressive cams that people tend to call bluetop cams. The jdm 20v motors use the 42mm crank but tossed out many because of tighter tolerances, straightness was around .03mm while the bigports tolerance was .05mm.

[@Tuned4Speed]

@@sparkster_6087 thanks so much for the info man!! That’s really amazing to hear 🔥💯

[@feral4mr2]

@NARUTO135798 The port from the head to block on the smallport 4age IS NOT an external oil drain, that's a wrongly spread internet myth. It's actually a crankcase breather. Designed to relieve the crankcase pressure coming up the real oil returns on exhaust side of the block so oil can freely drain back to the sump. All 7 rib 4age's share the same 42mm crank, wether 16v or 20v, they're completely interchangable. Very few early 7 rib 4age's came with a 40mm crank, moreso in europe and murica. A 7 rib bigport 4age and 4agze are identical internally bar the pistons. A smallport 4age and 4agze are identical bar the pistons. 28 years playing with 4ag's of different guises. they're an awesome nugget of a motor!

[@Corderosimio420]

I need one for my Tercel ✅

[@Tuned4Speed]

Definitely do the swap!!