3SGTE: MK2 NA > Turbo Write-Up

[Basement Digital]

Yes, you need a 5S clutch and 3S pressure plate. I'm not sure how you got the 3S plate to mate because the splines don't line up with the input shaft of the 5S tranny.

[DrWonderEyes]

a 3s pressure plate might work. but definitely not the 3s clutch disc on a e153 trans.

[slugg#3]

Okay, so, to get this straight...

e153 flywheel and pressure plate must go together -- we must use the s54 clutch because of proper fitting for the usages of the (5sfe) s54 tranny.

s54 flywheel and pressure plate will not fit the 3sgte -- also, the clutch from the e153 is larger and WILL NOT! Note: will NOT! fit the s54 transmission.

Ugh, this is the fourth time we've taken everything apart. Hopefully it works.

Anyhow, thanks basement digital and dr. wonder eyes. I hope this work. Perhaps maybe if I ever see you guys in Cencal, I'll treat you guys to some Pho Noodle Soup.

Thanks,

Thom

P.S. We used the BGB Electrical Schematics, Alldata schematics for this swap to work, from a Gen 2 cut wires to a 3sgte USDM ECU and 5sfe USDM body wirings.

[slugg#3]

One last question:

For the release fork? Do we need to use the turbo release fork? Or the N/A release fork? Both are different.

Not sure which to use -- hmmm..

Edit:

Turns out we must use the N/A release fork.

[JesLet]

Does this swap have A/C?

[slugg#3]

I have the compressor with the lines -- but I haven't had the lines connected yet. I'm sure it would work, although for me, I'll have to do the conversion.

Anyhow, right this moment, I'm not very happy with the swap. It's bugging me because it's the test and tuning part and I'm trying to be careful. Note that this is my first ever experience with the 3sgte.

So much different compared to the 5sfe.

[DJBess]

Will I need to do the same wiring for a 93 JDM 3sgte into a UDSM 93 NA(California model)?

[Basement Digital]

Originally Posted by DJBess

Will I need to do the same wiring for a 93 JDM 3sgte into a UDSM 93 NA(California model)?

There are some differences from this writeup, yes.

Slugg: Sorry I never got any email notifications of your most recent posts!

[90blacktrac]

New to Mr2's here but old to Alltrac's, now I have a 93na with a JDM celica 3s swapped in, this is the condition I got the car in with random wires run all over the engine bay from a failed atempt to use megasquirt (not sure why they thought a stock engine needed it but that's another story).

My question here is what would be the best/easiest combination of engine harness and ecu to use. I have my fuel pump hard wired as well as the ic fan and my car has no power steer or ac. I currently have a 91t engine harness and a 90 usdm st185(alltrac) ecu, is there any reason to upgrade to a 93 JDM harness and ecu (i.e. is this the more agressive 225hp fuel/ignition mapped ecu like the celicas have)?

Side note which coils do the Mr2 turbos use the large or small terminal, a size guesstamation would work for me.

[90blacktrac]

Oh and how does one tell what transmission was put in because the car was an automatic but they swapped in a five speed, it has the electric speed sensor.

[Basement Digital]

Finally got around to making a youtube vid of my swap:

YouTube - 1991 MR2 NA to Turbo Conversion

[v3gascane]

I'm doing the same swap, and it's all hooked up but the final piece of the puzzle. That piece seems to be the crank positioning sensor. It's the wiring that comes out of the top of the pulley casing. The place I bought the motor from is being of minimal help and every picture I look at the fatty connection seems to angle directly at the floor. Can someone guide my hand. I'm so frustrated it's no longer funny.

[winks]

So I got all the wires/plugs figured out and the engine turns over and immediately shuts off. Any idea what could be wrong? o2 sensor? spark plugs? fuel pump?

[dui69performance]

91na to 93jdm also has 91usd turbo body harness had no fuel then found y fixed that with the fc and bypassing relay but still have no spark using 91na igniter do i need to use jdm igniter

[Basement Digital]

Sorry for the lack of responses lately guys. I just haven't had much free time lately as I've been busy professionally and I've launched a forum of my own that I'm trying to manage. Hopefully others can pitch in while I'm on hiatus.

[d2uce]

has anyone done this who lives in san diego? im planning on doing this swap soon.

[ND4SPEEDMR2]

Bringing this thread back from the dead.

First off, thank you Basement Digital for this write up!! I wouldn't be as confident attempting the swap if it wasn't for you and all the input in this thread. I've read everything on here at least 5 times now just to make sure I got the process right.

I'm doing a 93 NA to a genII swap. The pin out diagrams you show are from a 91/92 NA. Tried different places on the board but can't seem to find the 93 NA pin out diagram to see if it's different. Any ideas on where to look?

Also you said the Fuel pump resistor is not required. From my understanding you aren't using this because you are using the 5sfe fuel pump. But for those who do change to the turbo fuel pump or what not, how can the fuel pump resistor be wired up to function? If this isn't hooked up, I'm just going to be dumping excessive fuel during idle right?

[Basement Digital]

Regarding the fuel pump: No, it doesn't dump excessive fuel. The pump is merely getting a "break" (less available pressure) at idle. It's actually a pretty confusing difference when looking at the wiring schematics. I'd love to talk to a Toyota engineer about this one.

But I do not run rich at idle. At least not noticeably. I was even able to pass strict local emissions testing.

[ND4SPEEDMR2]

Okay great! That takes care of that. At school we have the All Data program and I printed out the pin out diagram for the 93NA. It looks to be exactly the same as the 91-92 diagram so now I'm good. Thanks again!

[qwik108]

My mr2 started its life as an NA which eventually had the 91 turbo put in. Does anyone know if there are any differences when putting a 93 jdm turbo engine in to a 91 turbo? I've got the full body harness and engine harness for the 93 jdm engine. Will it just plug right up and go?