Audi 80 B4 sedan - Swap 1.8t AEB from Audi A6C5 to 80B4 with the entire installation

Hello to all forum members. I couldn't find a topic that fit my situation anywhere, so I decided to start a new one. Here's how it goes: I'm starting the swap in a few days. I have an Audi 80 b4 sedan from 1993 with a worn-out 2.0 ABT engine. Version with electric mirrors, sunroof, central unit without air conditioning. I decided to buy the entire car for a transplant and I succeeded. I bought almost the entire Audi A6 C5 avant from 1998 with a 1.8T AEB engine and a manual gearbox. I already know the swap topic by heart. But I have a different idea, I would like to transfer as many things and electrics from the A6 as possible, including the entire complete swap: engine with accessories, gearbox, wiring, controller, etc. And in addition, all the rest of the electrics, together with the box containing the controller, relays and fuses, with a harness under the dashboard, e.g. for clocks, light switch, steering wheel, spider, switches and other things for comfort, e.g. electric seats and such things. Has anyone ever done such a transplant? Literally the entire installation that will be needed with a complete swap. Are there any bigger issues preventing this from happening? Will it be possible to connect it all properly? I'm not saying that everything would have to work right away, but then I can start the engine without any modifications, without having to do much with the immo, etc. Has anyone done something like this before? And would you be able to advise? Will I be the first person on the forum to do something like this?
Additionally, I have a few questions:
1. Will the half axles with joints fit the steering knuckle of the 80?
2. Do I have to modify the fuel lines?
3. Will the A6 radiator fit the 80?
4. Is the fuel pump from 80 enough for 1.8T? Or will it fit with A6?
5. Will I have to undergo any additional modifications apart from this one?
6. Leave the paws with the cushions from 80 or use those from 1.8t?
The answers of people who don't know much about it, such as "I guess not", will not satisfy me. I am waiting for specific suggestions, awareness of problems or directing me to the right path. Thanks in advance to everyone who devotes time to me. If I wrote something wrong, please correct me. Regards !

Buddy, I saw a half-car with a w12, so anything is possible! :)

1. Joints do not fit
2.not necessarily - match
3.leave the one with 80 if you don't want to redo it
4. Have you checked the pressures and performance yourself? do you want everything on a plate?
5. a lot of cunning and determination
6. from 1.8T

I understand that you want to make a top five out of 80, right?
Theoretically, you can translate everything, even the polonaise. The only limitation is your capabilities and knowledge.

Both vehicles are simple, there are plenty of diagrams. And the fact that you have everything for the transplant makes it easier.

And the half axles from a6 will go into the joint from 80? Should I leave the half-beam from 80 and connect it to the gearbox from 1.8t? What are fuel pumps? I read on the Internet that the 1.8t has 4 bars and a capacity of 105l/ha, apparently it is 6 bar and 130l/h, except that I have a pump outside the tank. I really want to stuff everything I can from the A6 into the 80 and make a sleeper I'm asking about the water cooler because the 1.8t has plastic ends for such clasps and I have hoses and everything on clamps and I don't know if it's worth modifying it...

jacoksc wrote:

And the half axles from a6 will enter the joint from 80

unfortunately neither.

jacoksc wrote:

that I have a pump outside the tank

it doesn't really matter.

jacoksc wrote:

for such clasps and I have snakes

Go ahead and try it out, it's nothing compared to what's ahead of you :]

Good luck

Will I be able to connect the 80 axle shafts to the 1.8t gearbox? Is it easier to leave the old box? I would prefer this one to the 1.8t because it is in slightly better condition

I don't know, but I sincerely doubt it.

For comparison, I recommend the websites of wholesalers with moto parts, e.g. Inter Cars etc.

And your friend doesn't know what half the performance is like here? Once the engine and gearbox are in the kennel, the rest will go smoothly

Correct.

I can add that if I were to do it, I would leave the gearbox, steering knuckles and suspension stock, if only for safety reasons.

Do you have any advice about swapping? Something I might not know about? Do you know anything about these driveshafts and joints? Or about other things?

Why 1.8T?
A popular modification in this car is the 4.2 V8. It seems to me that most of the information on how to go about it can be found on the Internet.

4.2 V8 only quattro, so it's out of the question at the start, too much work... and also not enough funds for such fun. Half the car would have to be modified and most of it here is P&P I'm a mechanic, I have general knowledge, but I would like to ask about a few things so that nothing surprises me. What I don't find out, I will find out for myself, the demolition has already started

Hello again. I need help... I will change the entire installation as I wrote, from A6C5 to 80B4 with this swap to 1.8t. The engine has already been removed. And my current problem is: how to make ABS? It's also in my A6 and I'm wondering whether I should also transfer the pump from the A6 along with the controller and the rest of the cables or leave mine and whether I can connect it to the new installation so that it works properly? And will the wheel sensor fit the new ABS? In case anyone doesn't know, I'm moving practically the entire installation from the car. Can anyone advise me what to do about it? I will be grateful

The sensors can stay.
You need to move the pump from C5.

So just move everything and leave only the sensors with cables to the controller, right? And the second thing is similar - the question is about the door switchboard... it's here and there, and will I be able to connect my switchboard to the new installation without any problems?

Added after 4 [minutes]:

I have a question by the way. Will I be able to connect the driver's airbag? Is this cutting too harsh? Do you have any other ideas on what I need to remember, what to move, etc. to make everything work nicely? Thanks in general for your interest in the topic

If you want airbags and for everything to work, you would have to replace the entire airbag installation from the C5. Does it make sense? I doubt it. It depends on how you install it, so that the pillow doesn't hurt you by accident.

My first thought was to throw away the airbag installation, but thinking further, I thought that if I move the entire installation, what a problem it would be to move the airbags, but actually, you're right... it's better not to think too much. Pillows are important and, as you say, they can accidentally hurt you if you do something wrong. OK, one more thing cleared up. Do you know anything about the center? Or do you have any other ideas for such a spacer?

When it comes to locks, I would install a universal central locking kit and have no problem with the cap :]

Actually, I'm an idiot, I had something like this installed in the 1980s (facepalm) it's a matter of shifting and connection Can you think of anything else worth discussing? Abs, control unit, cushions are already clear. The issue of connecting lights, turn signals, etc. will not be a problem, I can handle it. I'll also make a supply fan somehow. Is the driver at the large or small entrance? Will it fit easily together with the group switch?

jacoksc wrote:

All in all, I'm an idiot

I didn't say that ;)

jacoksc wrote:

Can you think of anything else worth discussing?

If you posted some photo stories, it might be easier, we would know what stage you are at.

Currently, today the silink with the installation will be removed, this is what it looks like, a slightly outdated photo, but something like that
Tomorrow we will dismantle the abs pump, dashboard and the rest of the installation. After tomorrow I'll hit 80 the same, i.e. at the end of the week the engine will be in the kennel and the electrics will continue to be connected

Added after 12 [minutes]:

This is what my 80th birthday looks like, waiting for a new life

Gentlemen, I took out the engine and, wanting to look at the turbine, I noticed something like this...
Shouldn't there be a pawl controlling the exhaust gases there?

And I still have this problem... How to deal with the front strip? The one from A6 with the pipe to the IC and the airbag mount is too short for my 80's... should I just leave the old 80's belt, replace the front engine mount and buy an aluminum pipe and connect the IC using silicones?

Were you able to reschedule everything?

He probably didn't make it, a few years have passed. Personally, I would rather deal with the A6, even though the B4 is very nice.