greetings,
since my cousin decided to run the car without oil for a solid month one year ago, I am now the proud new owner of an old 1986 corolla sedan. the car still managed to drive for a while after that, but my parents said i could have it if i fixed it. instead of swapping in another 90 hp 4A-C or spend some money on a 4A-GE, i decided to make use of a 5S-FE out of a '91 MR-2 SW-20. going from 1.6L to 2.2L meant fabricating custom mounts for the extra weight. i am currently to the point where wiring is my main concern. my question is what is absolutely necessary wiring wise, and where should i start? i have the wiring harnesses of both vehicles, and some wiring diagrams of the MR-2, but none of the diagrams for the AE82. any help would be appreciated, and keep in mind that i am a 17 year old kid. this is my first motor swap involving two different harnesses and motors. thanks in advance.
5S-FE!! thats a new one, well to start, you cant use the mr2 transmission because the shifter linkags are located on the opp. side of the transmission than you need, you'd need a trans out of a celica, you can start by upgradeing the fuel system because the carb'ed 4ac doesnt have a fuel pump in the tank, you could get an inline fuel pump and keep the old tank, or i think you can put a FX-16 gas tank in it, the reason you have to make new mounts isnt because of extra weight... its because your corolla has an "A" series engine and you want to put an "S" series in (hence the 4A and 5S), has been done before and from what ive seen its pretty straight forward, if it were me you should swap in something thats a straight drop in(seeing as its your first time). As far as wiring goes... no matter what you swap in you have to RE-wire, unless you want another 4A-C.
I hacked off the back of the linkage box on the trans and welded on a pipe of the same diameter to come out of the back, then i welded together an assembly to hold the shifting linkage cables, and so far the thing shifts like a dream, except that the gears are in a weird order.(saved me hundreds on a new tranny) almost all of the mechanical work is done, including fitting the CV axles(the wheel hub splines for a 91 MR-2 match the AE82's, and the axles are almost the same length as the 82's). all that is really left to do is plumbing for the radiator and fuel(thanks for the tip on the tank) and the wiring. any ideas on where to find a diagram of the AE82 to help me rewire this thing?
Last edited by usagie99; 08-27-2008 at 06:23 PM.
Reason: added more photos
this is what i like to see. a swap thread, where somebody has already began the process, and they actually have specific questions. nice work btw, that 5s shoehorned in there nicely.
unless you have access to MOD or shopkey or something, your best bet would be a haynes manual. since you car was carbie there isnt a shit load of wiring on the ae82 side of things.
oh i see, you've already started my bad. youve got this swapping business down then, i didnt realize from your first post, lookin good so far,yeah man it shoudnt be too bad to wire it in, if you can read a wiring diagram.
that's my number one problem! i am totally lost on this wiring business! it turns out that my family had a Haynes manual but i can't find it now that i actually need it. another problem that i am running into is where to pass the harness through the firewall. the old AE82 harness passed through the passenger side and connected to a fuse/relay panel, but the MR2 harness looks like it has to go through the drivers side, where there is no hole in the firewall. this totally sucks because this is my ride to school, so it needs to get done before it is too cold to walk. one more question and sorry if this should be asked elsewhere; does the 5S-Fe have a MAP sensor or do i need to go source a AFM box from a junkyard? ps:thanks for the comments and suggestions! they are appreciated.
The Haynes manual won't tell you how to wire the motor properly, on top of that you probably need the harness extended, I'd talk to Dr Tweak if I was you and see if he can make you a harness for this swap.
If you can shoehorn a 3SGTE in an AE92, then a 5SFE should be a piece of cake in an AE82
no, the haynes just has all the diagrams, depends on whether or not the person knows how to use them.
honestly, if your not confident in rewiring, and dont feel like extending a shitload of wires, might not be a bad idea to get somebody to do it for you.
you can drill a hole in the firewall for the harness to pass through, it is a big job doing this though, like EVERAE said, extending a shit load of wires, matching them back up then wiring into the AE82 harness, Agreed, you should shoot it over to someone who knows how to do it
i guess i just feel a little overwhelmed by the magnitude of wires, and at the end of the day i will eventually fumble my way through the harness and diagrams. extending wires and matching them is no problem, the only thing i am concerned with is at what point do i splice the harnesses together. i guess i could find a shop to do the harness work, but i am trying not to spend too much on this project ($800 max for the whole thing,so far i have spent only 3oo of that)
lol well wiring is usually 400$ give or take, so i guess your doing it yourself.
extending the harness isnt hard, i did it on alot of my harness for my ae82 swap, its just painstaking. take your time with it, a little unintentional ground or high resistance in a circuit is gonna be a mf to find later.
from my experience, the ae82 wiring (the 4alc ones anyway) is pretty bare bones. there isnt alot of fancy shit to worry about, just basic circuits to make the car run. with the right wiring diagrams and some late nights, you should be fine.
after a long break, i finally got most of the wiring done to the point where the ecu is relocated to the inside cabin and most of lights and accessories already present in the car function properly, with the exception of the rear defroster system, which i plan on either completely rewiring into an independent system or scrapping altogether. the ignition system is now set up so that everything but the starter relay is key controlled, and the starter relay is fired by push button. my next task is to finish up my conversion of my gas tank into a in tank mounted fuel pump setup, although all that is really left on that project is to toss on a filter sock on the pump, reinsert the assembly back into the tank and do the pump wiring. on another note, the radiator is going to be of concern. is there any difference between a vertically flowing radiator like there was originally in my corolla and the horizontally flowing radiator like in the MR-2? space between the radiator and the exhaust header may be a problem, too. any thoughts?
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
ToyotaNation.com is an independent Toyota/Lexus enthusiast website. ToyotaNation.com is not sponsored by or in any way affiliated with Toyota Motor Sales, USA, Inc. The Toyota, Lexus and Scion names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
1986 AE82 corolla 5S-FE swap help
any help would be appreciated, and keep in mind that i am a 17 year old kid. this is my first motor swap involving two different harnesses and motors. thanks in advance.
) almost all of the mechanical work is done, including fitting the CV axles(the wheel hub splines for a 91 MR-2 match the AE82's, and the axles are almost the same length as the 82's). all that is really left to do is plumbing for the radiator and fuel(thanks for the tip on the tank) and the wiring. any ideas on where to find a diagram of the AE82 to help me rewire this thing?
my bad. youve got this swapping business down then, i didnt realize from your first post, lookin good so far
,yeah man it shoudnt be too bad to wire it in, if you can read a wiring diagram.
i am totally lost on this wiring business! it turns out that my family had a Haynes manual but i can't find it now that i actually need it. another problem that i am running into is where to pass the harness through the firewall. the old AE82 harness passed through the passenger side and connected to a fuse/relay panel, but the MR2 harness looks like it has to go through the drivers side, where there is no hole in the firewall. this totally sucks because this is my ride to school, so it needs to get done before it is too cold to walk. one more question and sorry if this should be asked elsewhere; does the 5S-Fe have a MAP sensor or do i need to go source a AFM box from a junkyard? ps:thanks for the comments and suggestions! they are appreciated.
Linear Mode
