1G Engine Swapping 91 non turbo fwd to 90 turbo awd

[1gtalon4life]

I am looking at buying a 1990 talon tsi awd with a blown motor and I currently have a 91 talon non turbo 4g63 fwd. Will a 91 non turbo fwd 4g63 swap into a 90 turbo awd 4g63t?

 

[1cleanreddsm]

I can't answer your question to if the N/A 4g63 will swap in place of the 4G63T, I'm pretty sure it should, besides the difference in the exhaust system, but IMO a non turbo AWD is pointless in the first place, it will be torqueless.

 

[GrattinoDSM]

it will swap in, but will be an extremely pointless swap, unless your are talking about building your NA motor to handle boost then swapping it in?

 

[cficare68]

It will bolt it. The internals should be the same. The only thing you won't have with the N/A version is the oil squirters. Otherwise you should have no issue. Is the turbo, turbo manifold, and downpipe still in the AWD one?

 

[1gtalon4life]

the reason i asked was because my 91 has a salvage title and i didn't want to shell out more money than need be and the awd has a clean title. i was only planning on doing the swap and driving it till i got a rebuild kit for the blown motor and than swapping them back to the way they were before. and as far as i know everything is till on the turbod motor

 

[SpawnedX]

It will bolt it. The internals should be the same. The only thing you won't have with the N/A version is the oil squirters. Otherwise you should have no issue. Is the turbo, turbo manifold, and downpipe still in the AWD one?

You're sporting that baby blue username for a reason, I see. This is why we don't offer advice to people unless you know 100%, because this could have been disastrous for him if he listened to you.

The engine will swap in, but the internals are not the same and will not hold up to boost. Just rebuild the AWD block and be done with it.

 

[92AWDHX40]

Yes thats what i would do rebuild it.

 

[1cleanreddsm]

It will bolt it. The internals should be the same. The only thing you won't have with the N/A version is the oil squirters. Otherwise you should have no issue. Is the turbo, turbo manifold, and downpipe still in the AWD one?

haha I like this part too.. obviously you don't know the difference from turboed pistons and non turbo piston.

To the OP, swapping a 4g63 isn't so easy as its a tight fit engine, and would be such a waste of time to swap now and swap later again. As mentioned above, just drive your n/a for now and progessively rebuild the AWD. C

 

[KyDSM]

Ok so your putting a 91 non turbo engine into a 90 turbo car. The motor will bolt up yes. But the wiring for a few components will be different. If its manual you will have shifting problems since the 90 shifter assembly is different to other years.

Edit: You can't take the 91 shifter out and think your going to bolt it in the 90. The shifter base for the 91 is bigger and the bolt pattern doesn't line up. One of the electrical components that I can think of right now that is different is the coil pack wiring. The ECU will be another problem. The harness is wired for a 90 turbo. The car wont run right with a 91 N/A. So either you would have to swap out your wire harness and ECU.

 

[1gtalon4life]

thanks for all the helpful info guys

 

[FLASH1970]

Ok so your putting a 91 non turbo engine into a 90 turbo car. The motor will bolt up yes. But the wiring for a few components will be different. If its manual you will have shifting problems since the 90 shifter assembly is different to other years.

Edit: You can't take the 91 shifter out and think your going to bolt it in the 90. The shifter base for the 91 is bigger and the bolt pattern doesn't line up. One of the electrical components that I can think of right now that is different is the coil pack wiring. The ECU will be another problem. The harness is wired for a 90 turbo. The car wont run right with a 91 N/A. So either you would have to swap out your wire harness and ECU.

If he keeps the same trans in the car he shouldn't have a problem with the shifter. I think he's just asking about an engine swap. He wouldn't be able to swaps transmissions anyway if he wanted to keep it AWD...

To the original poster, the N/A engine has no knock sensor, no oil squirters, and weaker pistons. If you want boost, you're better off finding a 4g63T engine to drop in or rebuild yours.

 

[KyDSM]

I don't think he is looking to boost his N/A. OP what exactly is wrong with the 90?

 

[1gtalon4life]

all the guy said was that it needed a valve job and that the motor was blown and i was just gonna see about the engine only not the transmission because i need a vehicle to drive since my 91 in sitting with no insurance and hasn't been inspected yet and like i said before i didn't wanna spend more money for inspection after inspection with it if i can just swap the na into the 90 and spend less money on it than the other and just put alil money aside to rebuild the turbo motor

 

[KyDSM]

You could do the swap if you don't mind splicing a few wires from your 91 harness to the 90 harness (coil pack). I don't know how the turbo ECU will react to the N/A motor. You could put in your 91 ECU. I know when dealing with 90 turbo ECU and 91+ turbo ECU all you need to swap is pin 6 and 14 to run a 91 ECU in a 90. When you turbo a N/A the only wire you need to run is for a knock sensor, so maybe all you may need to do is swap pins 6 and 14 because you will have a 91 ECU. You will have a knock sensor as a extra but it shouldn't matter if its not hooked up due to your N/A ECU.

 

[cficare68]

You're sporting that baby blue username for a reason, I see. This is why we don't offer advice to people unless you know 100%, because this could have been disastrous for him if he listened to you.

The engine will swap in, but the internals are not the same and will not hold up to boost. Just rebuild the AWD block and be done with it.

I apologize. I have read information between the engines and forgot about the pistons being different. Rods and Crank however are the same. If he changes the pistons he will be fine. Also he would need to switch the intake cam too because the NA cam is different the turbo head. Thanks for pointing out my mistake in a dick like way. Really appreciate it.

 

[KyDSM]

I doubt he is wanting to take his pistons out and swap them to the turbo motor. He is mainly just wondering what will be needed to put a 91 N/A motor into a 90 turbo shell. And have it running of course.