Picture heavy update
First off, I want to update with the correct engine mounting brackets to put a 1.8T (AEB) in a B3 chassis car. They are:
Left: 8A0 199 307C (Audi 80 w/ 2.0 ABK)
Right: 8A0 199 308J (Audi Cabrio w/ ADR)
I picked up my missing puzzle piece (the right engine bracket) while I was in Germany for work a week ago and couldn't wait to get it on the engine and test fit it to see what other problems I would inevitably run into.
Here it is on the engine:

Problem #1: transmission is huge and hits the front lift subframe cross-member. Crudely hacked it out while still in the car so that I could continue with test fitting
Problem #2: cylinder head hit the battery box, so it had to get cut back. This means the big fancy battery I just bought will have to go somewhere else. I haven't figured out what yet, but Alex tells me the B4 battery tray will bolt it. I'll have to look at that and see if it will work for me.

Problem #3: Vacuum port for the brakes runs into the master cylinder (not shown, but I already converted to vacuum boosted using a booster from a B4 I found in the junkyard). I pulled the metal tube out of the intake manifold for now and will figure that out later.

Problem #4: Transmission case hits the steering rack. Solved this by grinding down the rib on the transmission case.

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OK, now finally getting the engine in place. Woohoo!! It fits in nicely, thought I do have to install the motor mounts after it is moved into position as the trans case is too tall to allow it being dropped down onto them.



I held the winch mount in place to see how much space I'm going to have for the radiator. Looks like there is going to be LOADS of space. Score.

Next up is transmission mounts. My wishful thinking that things might just line up was clearly not founded in reality. Not even close. LOL


So of course I fabricated a set of mounts to fit the B3 subframe. This is really the fun part. I used some 1/8" steel I had sitting in my bin of scrap metal/material.




And with that, the engine and transmission fit in the car.
Next up: shifter. Rather awesomely, Audi used the same opening size and and mounting hole pattern in the B3 and B5 chassis cars. The only real difference is the that B3 shifter assembly bolt in to captive nuts, where the B5 uses studs in the shifter box. I like the sealed design of the B5 so I just drilled the threads out of the captive nuts on the chassis and bolted it in. Something had to be easy, right?!




That done, I dropped the front subframe to deal with modifying the lift frame I hacked up to fit the transmission in. One of the issues I had with the one-piece lift subframe was that there was no way to pull the trans without pulling the engine. I am solving that by going to a 3-piece subframe with a removable crossmember. Here is what I cut out:

Made some new brackets to be welded on:



OK, now on to dealing with some damage from hitting the curb while playing in the snow. The front left control arm was badly bent, but luckily I found a set of cast ones on the same car that donated the vacuum booster. A new set of bushings and they went in.

And back into the car:
