can somebody double check this... im doing an auto-N/A to Manual-Turbo Swap.

[sportinct26]

oh i wont go into detail why i have to swap but heres the situation. i got a 91 supra manual and turbo and i have a 89 auto N/A. well thanks to DMV i cant regester the 91 shell. (lien problem). my sister just blew the 89 supras engine(well melted #2 piston to be exact) she ran out of coolant on a hot summer day :nono:.

anyways so heres my situation. im swapping EVERYTHING from my 91 to my sisters 89(since i just baught it from her for $250 :evil2: ). and this including the Grey interior that i have in the 91 since hers is all crappy and its tan wich i dont like lol.

so far the interior has been fully swap. except dash is still off but il put it on once i get the engine in. but heres my situations...

1. do i still need to rewire anything for the reverse lights? b/c i was thinking since im doing both the dash, ecu and engine harness swap then there wouldnt really be any wires that goes to the tranne. or am i thinking wrong?

2. the clutch pedal has two plugs. one for safety start thing and i dont know what the other one is for. where do i pull/tap thoes from? i do want my safety start thing.

3. my 89 doesnt seem to have the abs unit like my 91 does. will that affect my ecu?(i dont think so but just to double check)

now the turbo questions.

4. what will i need to cary over from my 91 to the 89? i notice this cube thing on the passenger side but what is that for?(besides the ovious turbo, exhuast, IC, oil cooler? i dont think the 89 has one)

i think thats if for now.

thx for any help that you can provide.

 

[turbogeek87]

I can't really speak for the tranny swap, though I would think you could just wire up the reverse button right to the existing wires from the auto.
For the engine swap, you will need:
-Intercooler and all piping... there are plastic covers over the holes where the intercooler pipes enter the fender on the NA, just take them out and run the pipes.
-Air intake and AFM
-The motor and turbo of course
-The oil cooler and lines (mounts next to the intercooler).
-The engine wiring harness (just disconnect the harness from the ECU and push it through the firewall, disconnect the connectors holding it to the firewall and you can set it on top of the motor without having to mess with any connectors on the motor. Do this on both cars, makes the job tons easier.)
-the ECU
-The altitude sensor (near the ECU on the turbo models)
-The CPS (in the same place as the Distributer on NA cars)
-The Ignitor
-You will have to do some work to get your gages to operate, if you just swap out the gage panels, then you probably will not have issues. I would recommend an aftermarket Boost gage and put the NA voltage gage in the place of the boost gage. If you decide to keep the stock boost gage, you will need the turbo pressure sending unit thing. If you decide to put in the voltage gage, you will need to rewire the gage panel (pretty easy, I took some pics when I did it, if you need them let me know).
There will probably be a tachometer issue if you don't stick with the Tachometer that went with the tranny you are going to run.
-I don't know if you have done engine swaps before... they are pretty labor intensive and you will run into snags...
but as far as engine swaps go, this one is fairly easy- not much rewiring needed if any, and everything bolts in like factory.
-i have probably forgotten something as I did mine in late 1999, but there are some write ups on the web about mkiii NA to turbo swaps.
-I didn't catch which car had the manual tranny, if you go with the W-58 (NA manual) and plan on power upgrades, you will spin the clutch, so a stronger one will be needed as well.

This should at least give you some idea. Good luck.

Larry B 87 NA/T

 

[turbogeek87]

Oh yeah,
you will also need to make provisions for re-routing the NA power steering reservoir. I just went with the turbo reservior so it just bolts on with the mount, But others have made the NA res fit. The problem is if you put on a different res, you have to bleed the system. I screwed up and burned out my PS pump when I did this swap, cause I got so much air in the system that the TSRM method (jack it up and bleed it by moving the steering wheel back and forth with the wheels elevated), would not bleed the system.
-When you do the swap, you can disconnect the PS pump and A/C pump from the motor and set them on the frame so you don't have to open either system. JUST BE CAREFUL that nothing hangs as you pull the engine.

Larry B

 

[sportinct26]

thanks larry for the info.

and i have swap 1 engine due to knock and drop 2 engines. and als drop my tranne about 2 time without dropping the engine so i am preaty familiar with the labor involve. so im not concern about that.

and most of the stuff is aftermarket already. i have an aftermarket boost guage and wideband. along with other electronic ae. vpc, safc evc etc. what im more concern about is the little thing that came stock on a turbo supra but is not found on the n/a.

like on this picture of my 91 theres a cube that is not on my 89.

 

[yankiwi]

That "cube" is the ABS braking unit. If your 89 never had ABS you won't have it.

 

[sportinct26]

sry but i dont know where these two are.

-The altitude sensor (near the ECU on the turbo models)
i look and theres like this small box but both n/a and turbo has it so i dont know.

-The Ignitor
wich on is this? and where can this be found?

 

[johnathan1]

The altitude sensor is built into the ECU on 89+ models. It is called the "HAC Sensor".

The igniter is the flat metal rectangular looking box behind the engine fuse block. It has a couple of connectors coming from it.

 

[sportinct26]

The altitude sensor is built into the ECU on 89+ models. It is called the "HAC Sensor".

The igniter is the flat metal rectangular looking box behind the engine fuse block. It has a couple of connectors coming from it.

kool so since im using a 91 ECU i wont dont have to worry about it since its built in right?

and thx i saw where the ignitor is now lol. it connects to the main harness if im not mistaken?

 

[turbogeek87]

kool so since im using a 91 ECU i wont dont have to worry about it since its built in right?

and thx i saw where the ignitor is now lol. it connects to the main harness if im not mistaken?

-OK, thanks I didn't realize it was built in on 89+ so your good to go there.
-Yea, the Ignitor is wired in to part of the Main engine harness.
-Pics for the wire to make the Alt work on the turbo gage cluster 1) shows the two contact points that you want to hook up... 2) shows the new wire hooked up.

Larry B

 

[turbogeek87]

You could swap the ABS system as well, but I'd imagine that it would be very labor intensive... I've thought about that as I don't have it either, but the pain in the ass factor made me reconsider. Guess it depends on how important ABS is to ya.

Larry B

 

[johnathan1]

Swapping ABS would be a HUGE PITA! Not only would you have to install that cube and all of the lines, but the wiring to everything, including the Speed Sensors in the transmission, and both front wheels...as well as the computer.

 

[sportinct26]

Swapping ABS would be a HUGE PITA! Not only would you have to install that cube and all of the lines, but the wiring to everything, including the Speed Sensors in the transmission, and both front wheels...as well as the computer.

ha ha yeah i was looking at it today. but i dont intend to do it lol... i dont think the abs on my 91 is even working lol

 

[shaeff]

you're using a '91 ECU in an '89? are the connector plugs the same color? if not, you're going to have WAY more trouble than you anticipate.

the engine harness must match the year of the chassis of the car.

-shaeff

 

[sportinct26]

you're using a '91 ECU in an '89? are the connector plugs the same color? if not, you're going to have WAY more trouble than you anticipate.

the engine harness must match the year of the chassis of the car.

-shaeff

well yeah but im ganna be using all the 91 stuff like the ecu,harness,dash so would that even matter?

b/c when i remove the dash only like 3 plugs connect from th dash to the shell and they look thesame.

 

[shaeff]

double check. if they're the same, then you should be good to go. if i remember right, two of the plugs matched on the 89+ harness, but one did not, and trust me, it won't run with it unplugged.

just doublecheck everying before you go through the hastle of hooking it all up. you'll save yourself a lot of trouble if things don't match up. don't just look at them, actually plug them in.

-shaeff

 

[sportinct26]

double check. if they're the same, then you should be good to go. if i remember right, two of the plugs matched on the 89+ harness, but one did not, and trust me, it won't run with it unplugged.

just doublecheck everying before you go through the hastle of hooking it all up. you'll save yourself a lot of trouble if things don't match up. don't just look at them, actually plug them in.

-shaeff

^^ kool i will do that tomorow.

 

[MKivSupra_Rob]

wouldnt it just be easier to swap the vin and id stuff from the 89 onto the 91 and say you got it painted? lol

 

[sportinct26]

wouldnt it just be easier to swap the vin and id stuff from the 89 onto the 91 and say you got it painted? lol

unfurtunately the vin isnt just on the dash its "embeded" into the fram in the engine bay, its at the doors and im not sure where else.


and i saw what shaeff was talking about. and thank god both dash harness use the same color code so i just cut, solder and heat shirnk the matching wires :evil2: = new harness lol