RxRot

Hello All.

As the thread title says, I'm looking to put a T2 motor in my 88' Vert and I would like to clarify exactly what I need to do it.

As far as I know, the main parts I need are:
ECU
Wiring harness
Engine (with all associated parts)
Transmission

Are there any other parts that would be necessary (driveshaft, diff, etc.)? Any pointers or things to be weary of when doing the swap?

Any input would be appreciated.

-GAS

WestJaxVert

If you are going with the turbo transmission, then you will need the driveshaft and differential. The hood would be helpful as well. Go with S4 parts (engine, ecu, wiring harness) to make things as simple as possible. A little luck is helpful as well...something I'm short on right now.

Dan

Icemark

You will also need a T2 rear end and drive shaft (or a custom drive shaft to the NA rear end which I do not recommend).

T2 rear halfshafts.

Knock sensor amp/controller.

If you're changing the ECU you'll need the T2 AFM and pressure sensor.

Boost gauge (I used a A piller mount) or T2 gauge cluster and dash harness.

'Vert Engine mounts (they need replacing anyway).

Hood or FMIC kit.

T2 Cruise control actuator and computer (if you have/want cruise control).

Custom downpipe (although there are rumors that the Bonez T2 one will work on the manual tranny 'vert conversions, But I can't tell you that for sure myself).

You can Micky Mouse the cat back and keep the stock cat back as a temp. thing, but I wouldn't recommend it, and you will be unhappy in the long run.

SPEED_NYC

iTrader: (3)

Send a PM to 13BACE, he has done this swap with a 91TII motor into a 90 vert succesfuly. he should be able to help you out

RxRot

Thank you for the responses guys! I appreciate the input.

-GAS

hypntyz7

http://hypntyz.rx7life.com/t2conversion2.htm

RxRot

Earlier today I spoke with someone that told me that he was running a 90 TII motor with an 87 ecu and wiring harness (which apparently removes the fuel cut to the rear rotor). Is this possible? I'm looking at buying an 88 TII motor...could I leave my wiring harness and ecu like this guy? If someone could explain this, it would be appreciated.

-GAS

Icemark

I have an 88 'vert that I recently converted, using a rebuilt series 4 Jspec with series 5 rotors.

I kept the stock 'vert engine harness and just added the extra wires, wire length, and pins, but I have in the past built prototype OEM interface alarm harnessess for DEI and GM and had a Jspec T2 manual tranny engine harness (from the firewall forward). I also had plenty of plugs and pins from past work to do it.

In all honesty if I wasn't trying to cheap out, it would have been easier to use a new engine harness and ECU.

The 338 ECU which comes in the 88 CA spec 'verts will run a T2 motor just fine. I think that the map adjusts or runs rich anyway according to pressure. The same ECU may also be in 49 state versions, however I am not sure. I am sure Ted would know for sure.

But to use the whole series 5 motor you will need to use the series 5 ECU and engine harness (and of course all the extras like AFM, sensors, ETC).

Your only other option if you are dead set on using a series 5 motor, would be to use the series 4 T2 ECU and harness, sensors and AFM, and swap the front cover (so you can use the S4 mechanical OMP).

RxRot

Icemark (and all),

In response to your post, I recently purchased an 88 J-Spec TII engine and transmission (S4). The guy told me that I don't need to replace the ecu or wiring harness, they my 88' N/A ecu would work fine (not having the fuel cut problem of the TII ecu's). Basically, he said that I just put the motor in and go, that I do not need the boost sensor either, just strap an aftermarket BOV/boost gauge on and I'll be fine. Can it be this easy?

If it is, great, but I'd rather make sure that indeed I will be safe running the motor like this. Beyond that, I'm looking to buy some halfshafts, a diff, driveshaft, fuel pump (do I need to upgrade?) and an afm if I need one. Any clarification on whether or not this will work would be greatly appreciated. I don't want to blow anything up!

Finally, how do I get in touch with "Ted" about the ecu compatibility?

-GAS

rx7_ragtop

I too have "heard" that the 'vert ecu is mapped for a turbo.

Running with an NA boost sensor would be a BAD idea.

You also need to swap out the fuel pump to either a TII unit, or better yet an FD or aftermarket unit like a Walbro 255 lph pump.

You'll need the brake boost line with the check valve from a TII... Clutch slave cylinder for a TII... all drivetrain components... TII starter... you have to make some "extension" wires for the connections from the NA wiring harness to the TII transmission sensors. I'm sure there is more, I just don't remember right now.

Brad
88 Convertible
TII drivetrain... engine coming soon!

RxRot

Ragtop,

What do you mean when you say running an N/A boost sensor is a bad idea. The N/A doensn't even have one, does it? I was just told that I didn't need one as the BOV would take care of any excess boost...I'm not exactly sure what that sensor does, so I don't know if I should follow his instructions or not. Hopefully someone around here can help.

-GAS

88 vert

i currently have a 87 TII and a 88 vert the motor in the TII has no compression on rear rotor im seriously thinking of buying a new motor and doing the swap to my vert.i figured it wont be that bad since i already have a complete TII to start from but if i do it im getting a new turbo and going with all new parts i dont want no trouble with it after the hard work.Let me know what you guys think?Thanks,Dave

RxRot

Alright, well it looks like I'm going to swap everything out (wiring harness, ecu, boost sensor, etc). I don't want any problems down the road. As far as the ecu goes, is there any real difference between the 332 and 333? I'm going to post a thread for everything I need (from the website hypntyz7 sent me), so if anybody has any of the parts and would like to get rid of them, please let me know.

I'll probably be posting some more questions when I get into the build process...I know you guys can help.

Like this one: Will an FD fuel pump work for this application? Will it wire up correctly or does it need modification? And, if I'm putting a dp and mp on the car with a catback, I will need a remapped or aftermarket ecu, will I not?

Thanks again

Icemark

I think Ted said that ECU's with the same first two numbers are interchangeable (as in 332-333-338 all are 33X ECUs), but you might want to PM him just to make sure.

rx7_ragtop

It does have a "boost sensor" (pressure sensor) but it isn't the same.

The boost sensor tells the ECU how much boost is being used, (and therefore how much air is being pumped into the motor) so the ECU knows how much fuel to give the motor. On an NA car it basically measures vacuum.

The BOV releases excess pressure when the throttle gets closed so it doesn't "back up" into the compressor causing "compressor surge." This has nothing to do with a boost sensor or the need for a boost sensor. Anyone who tells you otherwise doesn't know jack about how turbocharged engines work.

Brad