AHU TDI Corrado Air Conditioning

Hello All,

I am in the process of building lines and mounting the drier.

I have rebuilt the MVAC box with new evaporator and blend doors. I will add new expansion valve when ready. The 98 AHU compressor lines don't exactly fit my build. I have an Eco Jetta airbox and my fuel filter that get in the way. Plus my hard line from Airbox/MAF to the turbo runs right in front of the Exp valve. I think they will fit the expansion valve but I will need to locate the drier somewhere that will change the line lengths. The biggest line change will be the drier line to condenser. I have been thinking about finding the smallest drier to help placement. Any ideas?

Also the low pressure (large O.D.) line from the Exp valve to compressor has this aluminum cylinder as a junction point. Any ideas if that is critical or not. I could cut/weld a custom line there and help routing issues.

I wanted to use as much as the AHU Jetta parts to help with replacement parts but I don't think I can fit in there.


Any ideas would be appreciated! Then I get to try and figure capacity and fill volumes!!!

Thanks
John

hopcarolina said:

Hello All,
I am in the process of building lines and mounting the drier.
I have rebuilt the MVAC box with new evaporator and blend doors. I will add new expansion valve when ready. The 98 AHU compressor lines don't exactly fit my build. I have an Eco Jetta airbox and my fuel filter that get in the way. Plus my hard line from Airbox/MAF to the turbo runs right in front of the Exp valve. I think they will fit the expansion valve but I will need to locate the drier somewhere that will change the line lengths. The biggest line change will be the drier line to condenser. I have been thinking about finding the smallest drier to help placement. Any ideas?
Also the low pressure (large O.D.) line from the Exp valve to compressor has this aluminum cylinder as a junction point. Any ideas if that is critical or not. I could cut/weld a custom line there and help routing issues.
I wanted to use as much as the AHU Jetta parts to help with replacement parts but I don't think I can fit in there.
Any ideas would be appreciated! Then I get to try and figure capacity and fill volumes!!!
Thanks
John

Click to expand...

Would it not be better to use most of the original Corrado hard lines but swap to the newer style mountings at the compressor? You would need to have a hose shop do new crimps but this would also give you brand new hoses too.

I probably would have cleared the hose routing before deciding where to mount the fuel filter. Also, on some vehicles, I think my Passat included, seems like the AC hose runs across the top of the air filter box.

I always thought the small tank inline was an accumulator of some sort but at one time I think I saw it referenced as a dampener. I would guess that it's probably necessary if it's there.

You can make custom lines but it would require the correct tubing, a bender and fitting to fashion the ends and then a crimp tool to make the hose connections.

Someone else has had to have done this already, I remember reading about AC on a Corrado before but that was a while back I think.

Good luck to you on it though!!

Steve

What evaporator do you have?

I used the Jetta evaporator, corrado VR6 ac lines except for the line from the evaporator to the compressor. I used a tdi mk3 line and then bent it up.

I’ll sell you two corrado VR6 ac lines. I have spares.

My two different tdi Corrados that I’ve built:



My 3.6 (former ahu swap)

Oh, how brave you are to be so good in this field. Even though I'm a man, I don't know much about this at all, lol. Whenever I had problems with something in the car, I turned to specialists. I was choosing the easier path in life, haha. I don't know if you will find the right person to give you the best advice. The best solution would be to turn to specialists who will be happy to provide you with advice. The company that helped me with the problems with my car conditioner, and it could help you too.






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the link: https://www.spartamech.co.uk/air-conditioning-service/