transmission swap

[C4ORCE]

hey guys need a little info i have a 90 twin turbo with an automatic BUT my wife has a 90 NA with a 5 speed. well long story short she wants my trans and i want hers but i know that my car has a tcu under the floor board beside the ecu and im pretty sure hers doesnt (cant check as the car is not at home). my question is would i have to swap the wiring harnesses out in both cars to make this work? also would i need a new ecu or would the one i have now work? thanks in advance

[Ace2cool]

To make the Auto a 5 speed, no harness swap, but you WOULD have to if you want to make the 5 speed Auto.

[C4ORCE]

yea thats what i thought just wanted to be sure

[NolimitZ32]

Solution:
Give her your TT (she will be very happy)
Sell her NA and put towards a slightly faster Manual TT for you (you will be happy
Now you are both happy

[Rager]

A^ and they could get plates saying "hisz" and "herz"

[300ZXttZMAN]

Great ideas^ everyone would be happy plus you wouldn't have to do any labor.

[C4ORCE]

well guys theirs a flaw in the slaw lol my car is finished other than a few little quirks that should get taken care of this weekend and her car is in a million pieces being built to show at NOPI

and would the ecu i have work with the 5speed?

[bartZ32tt]

auto-5spd: yes, you can retain auto ecu. Not the case for manual-auto swap.

[DankZX]

Will the N/A transmission hold up to the TT's power? I know the manual TT's have stronger internals and so on. I know the gear ration would be in favor of this but if the thing breaks thats alot of work for nothing.

[Ace2cool]

They did drop the power for the A/T, now that you mention it.

EDIT: It'd be an auto TT trans being mated to the N/A engine. We all know the M/T can hold its own. It would be fine.

[C4ORCE]

yea it would be a TT auto going to a na motor so it would be fine and from my understanding the 5 speeds were the same for na and tt models so should be no issue there i'll just need a stronger clutch set up.

[Z-owned]

The tt uses a larger sized flywheel and pressure plate which requires the n/a transmission's bell housing to be grinded a little to fit it. will need the starter spacer as well.

[C4ORCE]

thanks z-owned i wasnt aware of that but ill keep it in mind

[Z-owned]

NP here is the starter spacer (shim) whatever you prefer to call it lol as far as having to shave the bell housing it's really not that bad as there isn't much needing removed.

http://www.conceptzperformance.com/Cart ... .18.11.140

[Fearspect]

Will the N/A transmission hold up to the TT's power? I know the manual TT's have stronger internals and so on. I know the gear ration would be in favor of this but if the thing breaks thats alot of work for nothing.

I thought that, other than the flywheel and bellhousing size, the two manual transmissions were otherwise the same. There is a difference in the VLSD though.

[C4ORCE]

ok guys thanks for all your info i'll order that shim in the next few days