4age compatability?

[spode911]

Am I limited to an ae92 4age for my ae92 sr5 for swap or can I use any other years as long as its a 4age?

[toyotaspeed90]

that's a very vague question..... the better question is what are you after and how much/what do you have to do the swap.

[spode911]

I dont have anything right now, but im looking at jdm motors, and ebay but hardly any for ae92. But there are alot more variety of newer year 4age's there, and less milage.. Im just not sure that they well bolt right in. Im swaping out the 4af carb motor that is currently in my car for the 4age.

[spode911]

oh, yaeh i have a question for you, and the 4agze. does your motor have low compression pistons for the supercharger, and is that a 1600 motor or is it the 2.0? I was wandering if i could use these later down the road. I want to do a turbo mod and need low comp. pistons,, anyway just wandering.

[Createdtoburn]

Anything 4A- is a 1.6L engine. And yeah they're high compression. If you're converting your SR5 Carbed into a fuel injected 4AGE it will all bolt up just fine, but you're going to need the computer and wiring harness etc. More work then you probably are thinking.

[spode911]

I know an ae92 4age will fit, but wil a ae101 or ae111 or am I strictly limited to the ae92 as far as being able to bolt right in. If I wanted to do a 20v which is not ae92, will I have to modify the motor mounts??

[spode911]

Ill prrobably get aftermarket ecu to bypas rev limiter on stock ecu, and when I find out which 4age's are compatable ill be sure to get one that includes the ecu and harness

[kwint]

Originally Posted by spode911

I know an ae92 4age will fit, but wil a ae101 or ae111 or am I strictly limited to the ae92 as far as being able to bolt right in. If I wanted to do a 20v which is not ae92, will I have to modify the motor mounts??

No it drops right in. You have to mix and match mounts from your car and donor car. there are a few variations to the 4age. You ARE NOT limited to ae92 specific 4age motors. ANY 4age or even the 4agze can be dropped in.

You'll need wiring diagrams to complete any of the aforementioned swaps.

Ill prrobably get aftermarket ecu to bypas rev limiter on stock ecu, and when I find out which 4age's are compatable ill be sure to get one that includes the ecu and harness

Not that simple. These ecu's are analog and cannot be chipped. You do have options but its not as simple as it would be with a honda. Honda boys are spoiled.

[spode911]

thanks to everyone for all your help,, I really appreciate it..

[Createdtoburn]

Yeah lol, once again, if it starts with 4A- it will go in your car just fine. 16v or 20v. Except the 20v is a bit different computer and wiring wise. Being one, it has 4 throttle bodies. :p

[toyotaspeed90]

...... so here's the better/correct information....

all A series variants will fit... they have the same bellhousing bolt aligning, all use the same size flywheel starter ring gear, and all have the same passenger side mount.

the 4af, 4afe, 4age (all variants), and 4agze have the 3 mounting holes in the block for the passenger mount... in an ae86 (and JDM celica's) in the RWD setup they use a mount on either side of the motor.... this doesn't matter as the block casting is essentially the same (at least for bolt hole locations).

so... to answer your question, yes any 4age (bigport, smallport, 20V) will bolt right into your car.

transmissions are a little bit trickier..... as the 4agze used E series transmissions, axles, clutches, flywheels, starters, etc.... the mounts are also a bit different as the E series is larger.

The 4agze, all varaints, have lower compression in them than any 4age counterpart.

the 4age compressions are:
all bigports: 9.4:1 (except for the rarity... which I won't even mention as I'm sure nobody on this board knows what I am referring to)
smallport: 10.3:1
silvertop 20v: 10.5:1
blacktop 20v: 11.0:1

the 4agze compressions are:
US (and early JDM): 8.0:1
JDM (90 and later): 8.9:1
all 4agze's use forged pistons that have a ceramic coating above the first compression ring

so, if you want to turbocharge down the road your best option is to pick up a smallport 4age and plan to rebuild later (as they have the beefiest rods... even of the 4agze's... and all have squirters) or to just start correctly with a 4agze.

no matter the engine, especially if you have a 4af, you will need to do wiring, a new ecu, and need a new tank with an EFI pump (or suitable replacement)

[spode911]

oh, I forgot,, if i turbo a 20v will i have to remove throttle bodies and use a different intake? or can i mount turbo to airbox?

[ayang951]

Originally Posted by spode911

oh, I forgot,, if i turbo a 20v will i have to remove throttle bodies and use a different intake? or can i mount turbo to airbox?

if you turbo charged a 20v, you wont really need to change anything, since the 20v's itbs have a cover or so, for the MAF ST, also BT has them for the stock airbox, dont quote me on this, never turbo'd one, but i have seen some turbo 20v's before and they all just used the stock intake mani cover for it. but if your looking at a 20v ST just go with the 4agze, since here in the states its easier to get replacement parts for the 4age than the 20v. also the ST is about 150-160hp and the 4agze is about 155-165hp or sumthing like that, i have to go back and look, but hten again, since your car is carb already, if you go with a EFI engine, you will have to change fuel tank, fuel lines, use fuel pump, etc etc. id just get a 4age block and head, throw on some carbs from a motorcycle or if your feeling rich do some mikuni or webber side draft carbs, msd ignition system and there you go a nice DOHC carb swap, itll be awesome, i used to have a ae86 sr5 with a redtop 4age with some R1 carbs with msd ign system, it roared like no other, it was beautiful. so thats another option since you might not want to run wires, ecu and fuel lines, just run a carb 4age.

[toyotaspeed90]

^ no.... disregard that post..... (sorry dude)

silvertops are misquoted all the time... they make about 120whp and pretty much no torque.... the 4agze's (first gen, 8.0:1 and 7psi) make about the same amount of power but a lot more torque.... the later versions make more HP and even more torque.... a blacktop is getting close to the HP figures of a later 4agze, but the torque isn't there.... at all.

to run boost on a 20v.... if you keep the stock plenum you will be limited to about 6psi, as the stock plenums aren't strong at all (made of thin metal and are bolted together with not all that many allen head bolts)..... most 20V guys running more power either remove the ITB's and sell them or find a custom plenum.... either way, there's no true performance gain to using the ITB's with boost.... because either ITB's or a standard manifold, the turbo will be cramming the same amount of air into the engine


going carb on a 4age isn't that easy.... because you're still stuck with what ignition system to use.... MSD never made a dizzy to go into a 4age.... so at this point you either have to find something custom that will work externally with a non-efi setup... or you're stuck in finding the some-what difficult to find startlet dizzy's and having a custom mount made to get it to fit in the 4age...... there have been carb'd 4ag's.... but quite honestly, it ISN'T worth the hassle.... most guys sell the car off because they can't get it tuned quite right or they go EFI and ask way too much for the parts they have.

Further, MSD never made any sort of decoder for toyota ignitors... it even wouldn't make sense to do this because there are about 15 variations that toyota uses in their ignition systems.... so my guess it the previous post was more likely referring to a starlet based system with a 6al used as a limiter and/or a blaster 2 and/or a tach adapter to make sure the tach still worked.....

[ayang951]

Originally Posted by toyotaspeed90

^ no.... disregard that post..... (sorry dude)

silvertops are misquoted all the time... they make about 120whp and pretty much no torque.... the 4agze's (first gen, 8.0:1 and 7psi) make about the same amount of power but a lot more torque.... the later versions make more HP and even more torque.... a blacktop is getting close to the HP figures of a later 4agze, but the torque isn't there.... at all.

to run boost on a 20v.... if you keep the stock plenum you will be limited to about 6psi, as the stock plenums aren't strong at all (made of thin metal and are bolted together with not all that many allen head bolts)..... most 20V guys running more power either remove the ITB's and sell them or find a custom plenum.... either way, there's no true performance gain to using the ITB's with boost.... because either ITB's or a standard manifold, the turbo will be cramming the same amount of air into the engine


going carb on a 4age isn't that easy.... because you're still stuck with what ignition system to use.... MSD never made a dizzy to go into a 4age.... so at this point you either have to find something custom that will work externally with a non-efi setup... or you're stuck in finding the some-what difficult to find startlet dizzy's and having a custom mount made to get it to fit in the 4age...... there have been carb'd 4ag's.... but quite honestly, it ISN'T worth the hassle.... most guys sell the car off because they can't get it tuned quite right or they go EFI and ask way too much for the parts they have.

Further, MSD never made any sort of decoder for toyota ignitors... it even wouldn't make sense to do this because there are about 15 variations that toyota uses in their ignition systems.... so my guess it the previous post was more likely referring to a starlet based system with a 6al used as a limiter and/or a blaster 2 and/or a tach adapter to make sure the tach still worked.....

yupp that is true, like i was saying, dont quote me, but i forgot to mention that i bought a custom dizzy made from a mitsu from a guy form club4ag, and it worked great, but then again, ae92 is prolly easier to find to do efi than ae86.