Audi Coupe Quattro 2.3 20V - Czech Republic

[K Simmonds]

I'm pretty sure I've a couple of spare 3B diff lock switches if you need one and I think another one may already be in bits, will try and take a look at some point today for you. A knackered difflock switch will normally cause the ABS light to stay on so you've almost certainly found your problem.

[Tom_]

Finally found a culprit of not working ABS. It was a bad combi relay and a diff switch PCB. Could someone take a pictures of how not butchered PCB should looks like? Thank you

[Tom_]

Thank you,
Yes, you are right, i have to make something similar like your nephews car. It looks nice.. What material is that? Its secured via screws? Some flanges on the radiator? welded or glued? Thanks

[PeterS]

beautiful work Tom...re:ducting - you need to think about sealing the path from the grille to the front of the radiator as much as possible so the only place the air has to go is through your radiator and not around it. Same for the fan side -you want to shroud the fan. The main problem with the side mount radiator is that there is no where for the air to go (exit) after the radiator, so you are fighting against a lack of an obvious air flow path. Credit for this ducting goes to my Mechanic working on my nephew's AAN-converted Coupe Quattro.
IMG_5438.jpeg IMG_5441.jpeg IMG_5437.jpeg

[Tom_]

Nothing happened for a long time, because I was working on the Porsche. But I want to go to the MOT in two or three weeks. The biggest problem and the biggest problem is that due to the thicker water cooler and the location of the electric servo, there is no shrouding around the radiator and when the car is stationary, it overheats quite a bit. It is around 100 degrees, which seems quite a lot to me. I honestly don't want to redo the servo and change the radiator to a thin sheet metal one. I will try to at least do some air guidance from the front of the car before the car goes to the MOT and I will turn on the fan with a button on the tablet so that I don't have to wait for the temperature to get high.
I thought about using some coolant booster, but I don't know to what extent it works and whether it's just a waste of money.

[Tom_]

Finally bumper is fitted...Hopefully it will stays there after MOT and some driving Next on the to-do list is an install dashboard. Hope i will find all the screws for the dashboard

[Tom_]

Mesh added into the bumper, also the indicators are mounted...Still struggling to fit the side mounts in the wheel arches. But at least its looks much better now.
IC is painted to have more stealth look

[Tom_]

The bumper is painted. Yesterday I bought indicators, so I have to mount them fully. Also bought some honeycomb mesh to fill that bumper with that. Thinking of painting the IC to black to keep it more "stealthy".
Brakes feel good, or I get used to it So not sure but will see on the MOT how the brakes brake, but I think it's good.
Have to made some bumper mounts, front one are almost done, but those on the sides I have to figure it out.

[Tom_]

Its old, but not old like old hydraulic brake system container...I think its about 10 years or so...As i have dual stage vacuum booster

[Tractor Dave]

Be careful if your fluid bottle is old. I've had one burst. I normally don't go higher than 15psi.

[Tom_]

Yes, I have a pressure bleeder on the top of the brake fluid container, so there was about 1 bar positive pressure in the whole brake system. I also triggered the ABS selenoids and ABS pump during bleeding ..but now i will try to pump it with two people.

[Tractor Dave]

If you haven't already done so, try a pressure bleeder and also pump the brake pedal bleeding the old way with two people.

[Tom_]

yesterday i bled the brakes third time and I went for a short ride to see if the brakes are now rock solid. Its better then before, but its still not good... there is a quite pedal travel and after i push brake pedal few times, the travel is shorter after this. Seems there is still some air there

[Tom_]

Thanks, yesterday I bled the brakes.
I also installed the plastic wheel arches yesterday. I still have to test the brakes to see if there is a bubble in the ABS somewhere, but there is currently no brake fluid leak, so I am happy. Hopefully it will continue to be like that.

After the holidays I will finish attaching the bumper and paint the bumper, by then the front of the car should be completely finished. The last thing I would miss would be installing the dashboard. But the finish is always the hardest part and how many times do you have to do some things multiple times, unfortunately

[newsh]

Excellent work!