Audi A8 1.2 E-TDI luxury fuel sipper

[Vekke]

ITs alive!. Engine started today for the first time in the engine bay. So in my point of view the most difficult task so far seems to be conquered.

There are numerous pictures at facebook and you don`t have to have account to see those pictures.

[lowglider]

Wow, congratulations Vekke, that`s awesome!

I like how you positioned the engine so far back, this A8 might turn out to be a much better handling car than the original. I always liked the A8 but despised the understeer due to engine weight and position and this 1.2TDI swap of yours will more than fix it.

How many hours do you reckon were needed for the electrical wiring modifications to get this running?

[Vekke]

Electric wiring is made from 4 cars engine wiring and it took about 3-4 work days. Actual installation was only 1.5 hours and car was ready for start and everything worked as what I know at the moment. So its with oem connectors and sensors and mostly plug and play for installation.

Today put the coolant water in but still lots of minor leaks, so I was not able to drive the car yet. Got the powersteering and aircon pump installed and everything is lined up and its ready for serpentine belt.

[Arragonis]

Originally Posted by Simonas

Is the old 2.5 TDI a V6? The V6 2.5 TDI engine is what a local mechanic considers to be a nightmare to work on. As soon as you fix something, something else doesn't work. Change a valve cover gasket, and it might leak after two weaks, even if he uses a Victor Reinz gasket. He is convinced the French designed it, and he hates working on French cars. I don't really have anything against the French, but their cars could be easier to work on.

On the bright side, he says that they run great and are a good engine until the problems start.

The one in this car isn't a V6, its an inline 3. Mine has a V6 TDI though, they are solid except for the timing chain which is at the back of the engine and therefore a car killer when it breaks.

[Vekke]

This had the 2.5 TDI V6. camshafts and also the VP44 pump is a weak link and it also leak oil guite easily. My Vp44 got broke after 2000km of driving...

[niky]

Man, this has been a long time coming. Can't wait!

[COcyclist]

Vekke, I always enjoy your projects. I love the TDI engine but I am totally intimidated by the computer control wiring. It is great to see someone who has the skills to pull this off.

[Vekke]

This project is still very alive. Some money and technical difficulties but now cars almost ready for inspection. Oilpan leaked a lot and it took about 100 hours total to get that sorted out.

So car is now in running condition. Its now equipped with 1749V turbo, Yamaha r1 radiator (yes very small). Bigger intercooler than in the lupo and few tweaks here and there.

Weight BOM calculation shows it should weigth 1425 kg at current condition. Target was that 1400 kg which should be quite easy to reach. I will be almost at the target just by changing the front seats to lighter as the A8 originals weigth 31 kg.

All project pictures with details at facebook:
https://www.facebook.com/media/set/?...3642791&type=3

few teaser pictures:

[ausias]

It's very impressive your work.

you've changed your turbo from that on your lupo Project. Did you notice less turbo lag?

As far as I know the 1749V turbo is good for upto 148 hp and 370NM in a 1.9L engine (no smoke, 18:1),
but I'm not sure how much power and torque you will get with 1.2L. (even with black smoke of death air fuel ratio 14.5:1) without blowing the turbo or the engine.
have you fitted the 1749V, ...VA or ...VB versión?
I'm dreaming about a 1.2 Bi-Turbo setup.

[hege]

Can't wait to see it run. Interested to hear what the fuel consumption is.