The comprehensive 4age thread

[xtech]

That button Is connected directly to the TCU not ECU so it has no extra power giving effect on the engine.

[Bigmanbandy]

Does anyone have the part number for the clutch release bearing? I need one. and would the starlet bearing work?

[Hook]

Is this video in here already? It should answer some questions about the noisy idle.





Another issue is the type of oil you may be using. Flat tappet engines such as the 20V prefer an oil with higher zinc levels.
Read more here.

http://www.carzwy.com/Why-use-a-high-Zi ... otor-.html

Here's what he did with his O2 sensor. Denso 234-4162
http://www.amazon.com/Denso-234-4162-Ox ... B000C5UFK8

[new gt]

That button Is connected directly to the TCU not ECU so it has no extra power giving effect on the engine.

the wires are connected to the ecu and have an effect on the tranny not the engine.

[xtech]

Oh right I forgot Toyota use a single ECU box. But still yeah no extra fires given. Just moves the gear shift points higher up the powerband

[ruff neck chicken]

anyone using a light weight flywheel? interested in getting one but i keep finding flywheels for older engines or rwd.

i drove another car with a similar setup to mine with a light weight flywheel and now i want one.
his flywheel however was machined to get lighter and...erm...no i good

[Ted_v2]

Why you wanna get it for? Faster rpm build or faster rpm drop?

[ruff neck chicken]

i did a lot of asking around on a few forums and got mixed reviews also the pros and cons which all resulted in the opinion of the driver. i want it for faster acceleration.

[4a70]

I have a 4lb quater master and twin disc solid hub copper tilton setup on my 20valve turbo and it makes a hell of a difference rpms swing much quicker but its ezr to bog the engine on slow pulloffs

[ruff neck chicken]

wow that is really light. where did you get it?

[Team Loco]

Once in a while I drop by on this thread. We have done some mods to the drag locost car. She .ay be actually pushing close to 200hp at the wheels. We have installed a full prgrammable aem system and have gone the way of launch control etc. Gonna have to learn to drive her all over again. I will get some pics soon

[Team Loco]

Btw guys. I am looking for a blactop head and block. To keeps as spare or to rebuild. Doesnt have to be functional but one that is not too far gone. Need asap for another secret project lol

[Jonathan_337]

Btw guys. I am looking for a blactop head and block. To keeps as spare or to rebuild. Doesnt have to be functional but one that is not too far gone. Need asap for another secret project lol

PM sent

[TRD4life101]

Quick question, recently bought a 20v with gearbox and it came with brain, harness...everything but as my vehicle is a auto and I use it everyday in traffic areas I'm changing my mind from going manual and staying auto instead, can I just drop in the 20v with the brain an harness it came with and use the automatic transmission from my car which came from a 4a-fe or do I need another brain and harness? I've heard rumors that manual and automatic carry different ECU's ..

[Hook]

You'll need the automatic harness and ECU for the 20V. Now, there are about 11 variants of the 20V ECU and some harnesses would be different, so the only way to get a matching combo is to buy it from a conversion instead of separately from different people. You'll find a 20V owner who wants to go from auto to manual fairly easily.

Depending on what automatic transmission you have, you may not get the best of it, as the 20V auto tranny comes with selectable power and manual modes and most Corollas don't. Also, as the gearing is different, the 4A-F tranny will feel great, peppy, but it won't last, so you'll be hunting for a 20V tranny in a year.
Some 4A-FE trannies are very similar to the 20V tranny and have the pwr/manu modes, so they can be used, but I can't say if it'll last.

[Team Loco]

For you 4age peeps, my former original corolla gt 111 up for sale. Its a rare find. Pm me for contact info if interested

[TESTED performance]

I spent quite some time in V2 of this website creating a 4age thread with OE part numbers for the 20 valve engine as well as taking the time to explain some of the things people have been asking about here. I guess it was removed. smh.
These engines are pretty straightforward to understand if people will just take the time to do a little reading but I still hear so many weird myths and completely ridiculous assumptions about this engine that it makes me sad. Instead of trying to answer anyone's questions I think i'll do a 4AGE 20 valve Blacktop thread separate from this one and hopefully those who own one of these engines will find it useful. I have no experience owning a 16 valve 4AGE or even the silvertop but the differences are again pretty straightforward and easy to appreciate given the right perspective.

[the edge]

hey i need some advise, i own a trueno ae111 20v bt and i recently installed an AEM UEGO wideband controller after suspecting my car was burnung too rich.
so here is the thing: at idle the air fuel ratio is at 11.4 - 11.7 all the time . the temperature of the engine does not make a difference. i was wondering if my factory O2 sensor is failing or just died completely.
note widebande sensor is installed approx. 8 inches after factory o2 sensor.
ANY ADVISE welcome.

[iamelray]

Hey guy, i need some info plz...can a silver top (4age 20v) distributor work on a black top>> also are there any places that repair holes in gearbox.. i have one that got hit in an accident and has a hole about 1 inch close to the fork...

[4a70]

Yes the distributor is the same... iv interchanged them no probs

[ramlal]

I have an ae80 corolla with a st 20v engine
In hearing a loud noise that sounds like the tappets
Are the tappets known to make noise?
Plus im getting a flat spot on acceleration between 1500 and 2500 rpms
Any help?

[Hook]

The noise may not necessarily be tappets. Sometimes the VVT gear on the intake cam make a rattle after a while.
If when you rev slowly past 40% throttle and the noise goes away, you have the cam gear rattle. There's nothing we can do about it besides changing the VVT gear, which is frightfully expensive. (I've been reading that it's only available down under for around $900Aus)

[ramlal]

What about the flatspot on the throttle?
Only when in drive around 1500 to 2500 rpm?

[Hook]

That could be a number of things. From maintenance issues (dirty injectors, vacuum leaks), to an ignition issue, to a bad fuel pump or airflow sensor or throttle position sensor.

Start by checking for any error codes (there's an instruction on how in one of the sticky threads at the top of the forum page), and work your way from there. Doing a full service on the engine, including an injector clean, isn't a bad idea either.

[big nappz]

Wtb 4a 20v head and block black top sliver top any will do

[sandfly]

Gt...

[the dragon]

hey i need some advise, i own a trueno ae111 20v bt and i recently installed an AEM UEGO wideband controller after suspecting my car was burnung too rich.
so here is the thing: at idle the air fuel ratio is at 11.4 - 11.7 all the time . the temperature of the engine does not make a difference. i was wondering if my factory O2 sensor is failing or just died completely.
note widebande sensor is installed approx. 8 inches after factory o2 sensor.
ANY ADVISE welcome.

Hello did you get any advice on this problem sir

[the edge]

response to (the dragon) that issue i had with my air fuel ratios was 3 years ago. and no i did not get any advice on this forum. a few days after i posted my problem i purchased a new oem oxygen sensor, installed it and the cars afr is where it should be and still runs great till this day. it was the faulty oxygen sensor that was causing the problem.

[kpanictt]

Hey fellow tuners, anyone knows where I can get a water pump for my 20v silvertop?

[TeamH2O]

friend has a blacktop 20v and 5fwd box.....changed oil and no matter what, it grated from 1st to 2nd....anyone know what can cause that?

High rpm even worse....cruising and low rpm it doesn't grate