stracr85019

I will being swaping a street ported s4 t2 in my 88 gxl. I heard the drivetrain is pretty much the same on the gxl as the t2...is this true because i am not swapping the tranny or rear end. let me know please. oh i didnt find this in search.

Spraintz

iTrader: (1)

i am really really suprised that you didn't find this in a search. its been beat to death.

the TII driveline is stronger (and heavier).

TonyTurboII

Theyre not the same. Unless your planning on making a lot of power, dont worry about it.

stracr85019

what kinda power will the gxl train handle tho? (250-300hp?)

Kspurr

Just as an FYI, I was using an NA rear end in my TII Vert with a streetport, and it started squeeling about 4 months after the conversion with pretty regular driving. It may have been due to the removal and machineing of the diff flange to meet a TII driveshaft, but I would just go TII all the way back. It'll save you the time of replacing it later.

SwooshMand

Good luck man, i'm in the process of the same exact swap. I also have a s4 gxl.

stracr85019

yeah I so excited like a kid in a candy shop lol

Icemark

You didn't search or you would have found that the NA GXL tranny and drive train is good up to around 200HP, and that there is almost no parts common with a T2 drive line.

rx7_ragtop

(Almost no means that the pilot bearing and the rear brakes are the same... EVERYTHING else is different!)

Brad

nization

groovy, well, that answers my question as well.

groovy, as in, I do not mind finding these parts. If I have to do it right, I am GONNA do it RIGHT!

Rxmfn7

iTrader: (4)

I realize that this guy just dug up a 11month old thread, but this caught my attention...


Are you saying that between the S4 T2 and GXL, the T2 has a different front braking system? I was under the impression that the GXL and T2 had the same braking system.. It sure looks the same to me anyway...

rx7_turbo2

More people need that attitude.

nization

Thanks for the understanding. The hard part is finding a donor car. I am going to post a new thread in a minute to see if there is a way to tell a turbo II car from the vin or anything if the motor has been pulled and there is not badging on the car or anything.

If anyone knows the answer to this one, I'd greatly appreciate a responce/PM.

Thanks again.

And YES, I actually used the search function! haven't 100% found my answer, but I'm pretty sure it's not the 'easy way' as I indicated in my earlier post.

Digi7ech

iTrader: (1)

OK. We NEED to get a definite answer on this.
There are hundreds of thread which say the opposite of each other and it ends up no where!!!!!

I am going to be doing a TII engine and tranny and keeping my 88GTU rearend for lack of donor and money.

I will Post a thread with what exact drive shaft I used and what had to be done to it. I have heard 2 things so far. I've heard a NA Auto driveshaft will have the correct bolt configuration but is a little short and I have heard that a Vert Auto driveshaft is the same. I don't know if there is a difference but we need to get this figured out.

An answer needs to be added to the FAQ's.
If someone is able to take pics of the diff flanges to show any differences that would be awseome. I know someone posted the specs for the driveshafts somewhere.

nization

Agreed!

I'm right there with you, bro. I'm pretty sure I am going to need a new drive shaft and rear end, so if no one has taken pics of them by the time I get my hands on the new drive shaft and pull out all my parts, I will do so myself. I'd like to make all this swapping easier on everyone, not just me here, ya know?

Rxmfn7

iTrader: (4)

I am in the process of doing this swap myself. I have my T2 donor car, and my N/A sitting right outside (well the N/A is in the garage..) I will go take some pics, and measurements of everything, if it will make you happy. Give me a list of what you want, and Ill go do it later today..

HAILERS

&&&&&&*****An answer needs to be added to the FAQ's.
If someone is able to take pics of the diff flanges to show any differences that would be &&&&*****

The turboii drive shaft yoke is larger than the n/a, so a n/a won't work in a turboii transmission.

A hybrid driveshaft needs to be made for a turboii transmission used in conjunction with a n/a rearend. Buy one from Mazdatrix for two fifty.

For simplicity, keep the n/a harness from the ECU to the engine. Only five pins/socket are different. Pins 1C, 1R, 1S, 2K, and 3D.

3D on the turboii is for the fuel pump resistor relay. You don't have one on your n/a and don't need one. So ignore it. Do nothing to it. On a n/a it's part of the inhibitor switch circuit. I left well enough alone. You have a constant 12v to your fuel pump on a n/a. That's just fine for the turbo also.

1C on the turboii is for the air bypass solenoid valve and on the n/a for the airbypass relay. Do nothing to it also. It's just used for cold start. And will effect nothing if left as is. Later if you want you can access the airbypass relay and pull that wire and splice a wire from there to the air bypass solenoid, if you really must.

1R..is for the knock sensor on the turboii and for P/S switch on the n/a. Cut that wire a couple of inches from the ECU plug and splice in you knock sensor controller. There's about three other wires for the knock box. One is a source of 12v, one for a ground and another for the wire that you would need to run to the knock sensor on the engine. Big deal. Only sissy boys have power steering anyway.

1S...port air solenoid valve....on both engines this just pulls in the port air solenoid if you have over 20,000 miles on the car determined by the mileage switch. I just left the Port Air plug disconnected. Simple is as simple does.

2K....on the turboii is for the twin scroll solenoid and on the n/a for the split air solenoid. So I just found the wire at the split air solenoid and disconnected it from the plug and spliced a wire to it to run over to the solenoid rack where the Green solenoid is for the twin scroll. Done.

nization

Thanks a lot, Hailers!

That's some very nice information to have. Does that mean that Mazdatrix has already made this hybrid drive shaft? I did not see it on the website, but I have emailed them. Waiting for the responce.

I hope this stuff made/makes it into the FAQ.

Digi7ech

iTrader: (1)

Definitely helpful. Thanks. So is the spline/part bigger then on a TII tranny?(Can't remember what part is the Yolk)

Swapping the rearend would be so many more problems for me and semi useless. The Halfshafts are bigger but I already have the LSD.

Rxmfn7

iTrader: (4)

Its not only the halfshafts that are larger, the rear end and gearset themselves are also larger and much stronger. The T2 uses an 8" LSD , while the N/A has a 7" gear section. Things like this can happen running too much power through an N/A diff..

Digi7ech

iTrader: (1)

Sweet!!!!
j/k

If I am able to locate a TII rearend I will do it eventually but I am already taking on the task of putting an engine into a car which doesn't take it normally.

nization

I got my email responce from Geoff at Mazdatrix. He just put the hybrid shaft on the website yesterday for me! here's a link: http://www.mazdatrix.com/g4.htm

Scroll to the bottom of the drive shafts, it's the "Non-Turbo with Turbo Transmission Swapped in"

Now, after seeing that pic...anyone know how much power it will take before blowing up the GXL rear end?