90 gst motor in 94 gs

[finaldaysofwar]

To make this short I have a 90 gst and a 94 gs with blown motor I have a title for the gs and it is really nice and 5 speed the gst has no title and is automatic. I wand a 5 speed gst in the 94 it has a 6 bolt tranny and motor in it now can this be done?

 

[Silver gryffon]

Yep. Plenty of info on this site on how to do a six bolt swap. Also, just pull the automatic pilot bushing off the motor to stab a manual.

 

[finaldaysofwar]

Yep. Plenty of info on this site on how to do a six bolt swap. Also, just pull the automatic pilot bushing off the motor to stab a manual.

I see I guess my main concern was that I have heard the 90 is different than 91-94 and I was just gonna make sure cause I want to add the motor ecu and harness from the 90 to the 91

 

[Silver gryffon]

Can't tell you much about the electrical, but the engine swap should be fine.

 

[ThunderChild]

i personally havent done a pin swap dealing with this particular setup, but i believe you just have to swap two pins at the ecu.

there should be alot of information if you search "90 to 91-94 ecu pin swap", but an easier option might be grabbing a 91+ ecu, CAS etc.

 

[19Eclipse90]

It's not a '90 turbo model if it has an automatic transmission unless a swap has been done already. I'd verify the vehicle model year first by checking the VIN (10th digit: if L = 1990, if M = 1991,...). If it comes up as a '90, then I'd check the stamping on the transmission to figure out what is there.

At the same time, I'd be checking what model year harness is in the turbo car.

Once you know those things, you'll have a much better idea of how to go about this.

 

[finaldaysofwar]

Thanks everyone, also the reason I be the 90 is 90 is because the door says it could it be made in late 90 but be 91?
Also the air filter has been off since he parked it and I don't know the effects that will have

 

[BogusSVO]

What month in 90 does the door decal say?

Best to check the vin tho.

 

[finaldaysofwar]

It was titled as 91 made in 0ct of 90. Will the swap work?

 

[BogusSVO]

Oct of 90 should make it a 91 car.

Check the vin to confirm.

You should have all the parts you need for the most part to do the swap, simply from having a donor car, now for the research and wrench time

 

[finaldaysofwar]

It

Oct of 90 should make it a 91 car.

Check the vin to confirm.

You should have all the parts you need for the most part to do the swap, simply from having a donor car, now for the research and wrench time

was insured as a 91 does that confirm? Also what do I need to do with the harness if I don't wanna swap them?

 

[BogusSVO]

It's not a '90 turbo model if it has an automatic transmission unless a swap has been done already. I'd verify the vehicle model year first by checking the VIN (10th digit: if L = 1990, if M = 1991,...). If it comes up as a '90, then I'd check the stamping on the transmission to figure out what is there.

At the same time, I'd be checking what model year harness is in the turbo car.

Once you know those things, you'll have a much better idea of how to go about this.

What is so hard about going to the car and checking the vin?

The vin is in the driverside lower corner of the front windshield, and count to the tenth place and see what is there?

As far as checking the harness, I have no clue, That is outside of my knowledge base.

 

[pauleyman]

Agreed why do you keep asking about year
? Check the Vin and you will know for sure.

 

[19Eclipse90]

Since the '94 already has a 6-bolt engine in it and assuming the turbo donor car is a '91 (Oct. of '90 production date is a '91), the swap should be relatively straightforward.

Start with reading, digesting, and absorbing this: Installing a turbo 4g63 into an nt 4g63

The biggest question you then need to answer for yourself is what you think will be easier: swapping the '91 turbo engine control harness into the '94 and modifying it along the way to work with a manual transmission (harness) OR leave the '94 non-turbo engine control harness in there and add the wiring for the MAF Idle Reset, knock sensor, injector resistor pack, and -- if desired -- the boost control solenoid.

Once you've decided what you want to do there and actually get to physically swapping things around, as Silver gryffon mentioned, be aware of the pilot bushing the automatic engine will have in the crankshaft. Here's a couple ways you can get it out without destroying things:
7bolt engine to 6bolt trans
Removing Auto Pilot Bushing, EASY

 

[Liz93EclipseT]

my first car was a 93 gs that my dad and I turbo'd. We turbo'd the n/t motor.. honestly woulda been simpler and maybe just as cheap to swap a full turbo motor in. I think ur good to go if youre doing a whole motor but def need to watch out for the weird differences the 90's had vs the 91

 

[finaldaysofwar]

Ok 10th is m and sorry I didnt have the car at my place it was a ways away but I got it here now. Also the cam has a small amount of surface rust do the the oil cap seal being bad. I have lots of other cams from other 4g63 heads but don't know how to tell them apart nore what ones will interchange any help?

 

[pauleyman]

Well you have your answer 91 car.