AC reinstall for AAN swapped B4 90

452 Views 9 Replies 3 Participants Last post by bane, 2 mo ago

tecknoquatt

Discussion Starter · 2 mo ago

Hi everyone just looking for some advice/information for the proper components I need for getting my AC set back up. The car is a 1993 B4 90 and I swapped an AAN into it 13 years ago roughly. Currently the engine is setup with 3B belt routing and a 3B intake manifold but will be turning it back to serpentine (also front routed Wagner intake manifold). I wanted to get the AC going again cause I do miss it in the summer time. I know the type of components I need but just want to be sure I get the right things the first time. Im assuming I can just buy new or remanufactured AC compressor, evaporator, accumulator and then locate the proper lines. Which will probably be the hard stuff to locate.

My Question:

Can I just use all the 7A CQ AC components? I dont have ETKA or a lot of my old sources to reference like I use to so I thought I would come here first. Which mounts do I need for the compressor and moving the alternator as I think that needs to be moved from the drivers side to the turbo side for serpentine.

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varia

· #2 · 2 mo ago

i have an AAN engine with V belt, wagner intake in my CQ, with workign AC (I swapped a B4 climate box/controller)

I dont think it would fit with the serpentine belt.

Hood Motor vehicle Automotive design Car Automotive air manifold

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tecknoquatt

Discussion Starter · #3 · 2 mo ago

Looks like you made some custom lines. Any details on those you could share?

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varia

· #4 · 2 mo ago

tecknoquatt said:
Looks like you made some custom lines. Any details on those you could share?

my cq is a very early model, the ac line runs in the fender well. I relocated the dryer (thats the only place where it coudl fit) and made two lines, one hard line and the and hose, using the original components. (not sure about the other cars, but the early cq has the dryer before the AC compressor)

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tecknoquatt

Discussion Starter · #5 · 2 mo ago

ok thanks for your info. Is the anywhere that still has a copy of ETKA online that's accessible that you know of?

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varia

· #6 · 2 mo ago

tecknoquatt said:
ok thanks for your info. Is the anywhere that still has a copy of ETKA online that's accessible that you know of?

Audi > VAG ETKA Online > Nemiga.com

Parts catalogs. Spare parts catalog VAG ETKA Online. Audi.

nemigaparts.com

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bane

· #7 · 2 mo ago

I am looking to do this on my AAN-swapped CQ as well. Have a similar setup with a front-routed intake. Did you use the original CQ compressor and mounting brackets? From what I recall the oil filter housing interfered with the compressor bracket so a 3B housing was needed. Also, is the B4 climate control panel a direct swap?

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varia

· #8 · 2 mo ago

Here are the pictures of the lines.I used the original pipe, cut, rotate, weld.
The hose was shortenes and i think one end was oriented a bit differently, but im sure you got the general idea.

I used the 7A brackets, 7A alternator, compressor, B4 PS pump, and yes, 3B oil filter housing.

For the B4 climate control, I swapped over the complete AC box, control unit, the center cage that holds it. Custom wiring, few extra sensors and coding. Not that difficult however I got a friend who is an car electrical genius.