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Thread: 4AFE into Toyota TA47 -80 RWD.

  1. #1
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018

    Default 4AFE into Toyota TA47 -80 RWD.

    Hello! Im doing my first engine swap in a Toyota Carina ta47 from a 3T-C engine to a 4AFE.

    Why go threw the trouble for that low bhp gain? a good question but it's mainly because im a engineer student on a budget and 4AGE's are quite rare in Sweden.

    Also, i haven't seen anyone do this conversion. Guessing it's similar to a 4age 20v, but let's find out?

    So the object is a station wagon with 9000 km on the clock and looks like this:

    I have manage to get my hands on a T50 gearbox with a A-bellhousing. Also bought a Corolla e92 with a first gen 4AFE as a donor car.
    Soon more to come:
    Last edited by Ceasar; 14-03-2019 at 03:38 AM.

  2. #2
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018

    Unhappy Re: 4AFE into Toyota TA47 -80 RWD.

    So here is the sitting 3T-c that are in the car.

    The 4AFE from the Corolla.

    The T50 22 spline gearbox with A house. Measured it and externally it seems to be the same as the t40 that's in the car

    First step was to remove the 3T-C from the car and the 4AFE from the doner car.
    Keept as much as i could from the electric's of the 4AFE.

    Got a 4AGE flywheel and clutch with the gearbox when i bought it, But with the 4AFE loose i saw that the flywheel pattern is different. from 8 bolts(4AGE) 6 bolts(4AFE). the flywheels seems to have the same diameter so just keept the 4afe. Im afraid of the starter engine rough, as it will change to the opposite side thanks to the t50 housing and seems like the starter is not meshing 100% with the flywheel. But here they are mounted toughter

    So from just lowering in the car i notice a lot of things that would need to be fixed.
    *Distributer to close to firewall (Knew that)
    *Thermostat/water housing to close to firewall
    *Propshaft wrong spline to fit gearbox (20 on original) (22 on new)
    *Intake is hitting firewall aswell.
    *Header is going straight down where new engine mounts need to be fitted.

    So conclusion. this will be fun...
    Since im a student my budget for new stuff is very tight and the garage im in have only a angle grinder + mag weld i will try to solve it as basic as possible

  3. #3
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    First thing to attack was the firewall issue, i will try to get this car registered in sweden which have quite a lot of laws of what can be modified i will not cut into the firewall.

    So either i will have to move the engine 15 cm forward and lengthen propshaft.
    Or relocate all the parts thats hitting it.

    I choose the way to relocate stuff, i have about 4-5 cm of clearence from the firewall.

    So for the distributer i choose to steal the idea of putting it in the front of the engine, but cant afford the kit from the 20v. So i have started to 3D-print a model to hold it which hopefully later will be replace with a cnc metal part. I did som basic FEM calulations and since the forces arn't that high on the roation i should manage ok if it's not vibrating itself to death.

    Next was the water. I found alot of room under the intake for movement of the waterhousing, sadly the water will get to hot for 3d printing the reloaction piping so had to do it with a lot of grinding and welding.
    The housing had a really hard geometry to get a pipe out between the bolts. But the first half looked somewhat like this:

    Think it will leak but thats a problem for later, did one more part like this so it snuggly rounded the engine to unde the intake where the hosuing is now located. (will solve a better photo for the complete solution.

    The next problem was the header.
    I found out that the 7afe/ newer header were not cast iron and better flowing so too be able to weld it/change it i bougth a newer one and the header bolt pattern is the same between generations:

    Sadly i notic that this went straight into my oilfilter. so i thott that if i exteended it.

    This was a really bad move since its now hitting the steering rack on my car since im driving on the opposite side of the road. I think if you have it on the other side this mod would be enough.

    Got a little bit mad and solved it by cutting the whole header to pieces and started to just fit and weld bit by bit.

    Flow wise i think this is better then the original but still not that great. I manage to still sync 1-4 and 2-3 headrunners.

    Did some porting on the inside to take away some of my horrible weldingskills.

  4. #4
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Next up the last problem of firewall clearance ... and it was a nightmare. The intake! Since i only had a mag i thought that rewelding it was a bad idea so started to do some 3d printed re-route. This was a really bad idea since the clearance was to tight and the flow was compromised.

    Then got inspired by a thread on this forum: tech question: DIY 4age cut n shut inlet manifold
    where Aust162 reweld a 4age intake from fwd to rwd.

    The 4age header have simular front and back sides so didn't look to hard (if you could weld aluminium, which i cant).

    But found a think called alutite which make it able to kind of hard solder aluminum so i went for it.

    One of the sides has a straight cut but the other one was a horrible angle + you have to cut into the first runner a little bit to get vaccum and other components with you.
    After hours of filling material which was very hard since i did it with a small propane torche i manage to do it (unsure if it will hold airtight tough but seems solid) Sadly the first runner have 90 degree angel to it... not good for flow at all but hopefully it will run.
    Also the EGR is a bit up in the air.. (later problem)

    Hope this will work...

    Now to a the easy part. The engine mount's!

    I notic that i could reuse almost the whole setup of the original, i only had to lengthen it a bit since the 4afe is more narrow then the 3tc. Also the pattern to bolt to the engine is different. Solved it by making a template by cardboard and drilled it out.

    The engine is now (what i know) centered but i seems like manage to give the engine some degrees of tilt. Hope it wont matter.

  5. #5
    Junior Member Backyard Mechanic
    Join Date
    Jul 2012

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    All 4as have that subtle tilt. You can use a 20 spline t50 from a car with a t engine like a ta22 or even another carina with a 5 speed and swap the housings. Then your tailshaft will work.

  6. #6
    Forum Member 1st year Apprentice
    Join Date
    Dec 2018

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    Thanks for the input Littleredspirit, good to know that the tilt is natural!

    For the spline problem i bougth a SR5 frontend of the driveshaft, got to mesurments and they are almoste identical i length!

    So that's solved.

    The engine is now in the car and got the wiring loom from the engine fixed with some extensions of some cables like catalytic converter and the distributor.
    Got the engine to crank aswell. But the sound was really horrible.

    Original the starter is on the intake side of the 4AFE but with the T50 it need to be moved to the other side. The starter will not fit in the whole on that side so i cut a little bit of the flange of and made a new hole.
    It seems like the fitment did not become so good...

    I solved it by ordering a 4age mk1 mr2 starter that i god cheap, it should be the right fitting with the holes on that one... i hope!

    The other problem im now facing the the wiring of the ECU, electrics have never been my strong side of cars.. So i'm sitting here trying to know what of all the wires i need to just run the ECU as a standalone system but dont dare to cut out wires since i dont know if they are needed.

    Do anyone know a good way to do this? Found what to use when doing a 4age but they seem a little bit different so cant use that info.

  7. #7
    Junior Member Grease Monkey
    Join Date
    Oct 2009

    Default Re: 4AFE into Toyota TA47 -80 RWD.

    You need to ground the ones which say ground and put power to the relays

    Also need to wire in the ignition

    Should be it to get it running

  8. #8
    Toymods Vice President Chief Engine Builder TheToyman75's Avatar
    Join Date
    Jul 2005

    Default Re: 4AFE into Toyota TA47 -80 RWD.


    Interesting choice and seems like a lot of work for very minimal gain when there are so many 3T-C performance parts around.
    1971 2T-B Celica TA22 ST.
    1971 2T-? Celica TA22
    1973 2T-G Celica TA22, aka "The Unicorn".
    1975 2T-G Celica TA27 GT
    1976 2T-G Celica TA23, aka "The Colonel".
    1985 3F Auto FJ62 Landcruiser
    1989 7M-GTE MA70 Supra, aka "The Poopra"
    History: Rods Classic Celica Sampler thread.

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