1995 90 quattro V6 to 1.8t Conversion

[Ruffiano]

Ruffiano,

Stupid question, but why didn't you pick up a usS4/6 instead, as it is ready made, rather than going this route with the 90 ?

Just me being curious.

Good work by the way.

I actually have a URS6 avant:


But the s6 doesn't have a 1.8t either.

The truth is, i like the feel of the small chassis better than the large chassis. I also like the b4 styling better. It all really comes down to preference. I have owned several UR4/6s and I've owned several b3s, and cqs. I converted my CQ to S2 spec (and then went with a big turbo), and i just enjoy the smaller chassis more. I don't really know how to describe it. I want this car to have around 300 awhp and all wheel tq when i'm done with it. I want it to be a comfortable cruiser, but also have a bit of grunt.

[macspring]

Ruffiano,

Stupid question, but why didn't you pick up a usS4/6 instead, as it is ready made, rather than going this route with the 90 ?

Just me being curious.

Good work by the way.

[macspring]

I struggle to understand wiring diagrams!

How easy is it to swap a 6A/ACE 16v for a 1.8T engine in a coupe?

No help I know, but easier to buy an S2 Coupe ?

[Ruffiano]

Got the downpipe mocked up, and a friend is doing the final welding on it



Same friend sold me an ABY Airbox which is a perfect fit. I adapted the smaller 1.8t MAF to fit the inlet and everything ties in very nicely:

[Ironman80]

I think the one that you have labelled with the red "X" is an alignment dowel and was never intended to have a bolt through it. If you have other bolts that line up and the dowel does not line up because of the engine/trans swap, then the solution is to remove/cut-off the alignment dowel. This is common for swaps of 2.7tt 01E 6 spds into C4 UrS4/S6s.

Thank you!

[Ruffiano]

Another piece to the puzzle

[Ruffiano]

Got the intercooler mounts mocked up, should work well:


Plenty of room


behind S2 bumper:




Actual bumper going on the car:

[Mcstiff]

Best of both!

[UrS4boy]

Finished my wiring and finally had a chance to test it today:
Looks like i did an okay job with it.

Congrats.

Non-imbedded working link:

https://www.youtube.com/watch?v=_3jYsDOLqWY&feature=youtu.be

[UrS4boy]

Thanks! And one more question...
all bolts are screwed into the engine block? I have one does not want to get

I think the one that you have labelled with the red "X" is an alignment dowel and was never intended to have a bolt through it. If you have other bolts that line up and the dowel does not line up because of the engine/trans swap, then the solution is to remove/cut-off the alignment dowel. This is common for swaps of 2.7tt 01E 6 spds into C4 UrS4/S6s.

[Ruffiano]

Finished my wiring and finally had a chance to test it today:




Looks like i did an okay job with it.

[Ironman80]

Thanks! And one more question...
all bolts are screwed into the engine block? I have one does not want to get ...

[Ruffiano]

I struggle to understand wiring diagrams!

How easy is it to swap a 6A/ACE 16v for a 1.8T engine in a coupe?

You would be doing the same thing i'm doing. You would need different engine mounts, IIRC one of your mounts would work fine, and the other one you need is from the same ADR engine i took mine from.

[Ruffiano]

What about the passenger side, what did you use?

I used ADR engine mounts from a 97 Audi Cabriolet. Both Sides. My car came with the V6 engine which has the motor mounts bolted on to the frame rail through the wheel wells. Inline 5 cars where the mounts are welded to the frame rail need different mounts.

[andykingfishers2]

Almost plug and play, what you waiting for

I struggle to understand wiring diagrams!

How easy is it to swap a 6A/ACE 16v for a 1.8T engine in a coupe?