How about some pictures?

GM crammed A/C in to the Opel GT. I have seen an aftermarket unit in a Lotus Europa. Many things are possible. Let's see what you have to work with.

Yeah Scott, we know. My little hybrid Escape uses the same compressor. The good news is that it makes full output regardless of the engine speed. Even stopped. I think the Teslas leave the road about 2pm, as they watch the 5kw going into the compressor kill their range - as they sit in traffic. Elon...

Cusser: The A6 and other GM products have a pressed on clutch hub. The clutch service takes a special puller, then another puller and support to get the pulley off. Here is a video: https://www.youtube.com/watch?v=URqFd3KkSRY I doubt you want to buy the tool kit. Having said that, the guy in that vi...

Cusser: A few paths to take, depending on the use the car sees. 1 You could keep it R12. We know the refrigerant is harder to get, and that the A6 seal design will always pass a little oil. Along with that oil a little refrigerant is lost. If the car sits a lot the seal seems to leak more. The up si...

Thanks, I will give them a try.

How have you been? Missed you around here

LOL Brad, You can scrape the mussels and barnacles off my cast iron Tecumseh, or use my York air compressor hotrodac Hey Tex! Been waiting to see you here. Barnacles? Oh man I need to post some pics for you! Do you happen to have a vent assembly for a Mark IV Roadmaster? https://photos.app.goo.gl/i...

Wow. What a beautiful casting. Absolutely no reason to discard a rigid, well designed item like that. A wide open invitation to a direct mount compressor. Two tabs on a plate at the hinge line and mount the plate to the bracket. Tension arm tab as needed. Yes, your valve can probably be backed down ...

Yeah that thing is a chinese frankenstein from a 24v chinese excavator. We are not even sure it is variable displacement.

I gave you the link to a real V7 in my last post.

Belt tension can be accomplished in a few ways. A solid cast iron mount may already have much of what is needed.

Compressor refrigeration capacity is the best way to size one. Most manufacturers provide a dyno sheet that indicates the cooling capacity in kilowatts. Converting Kw to btu/H may give you an idea of the scale. 12 kilowatts = 40,945 Bth/h or 3.4 tons of refrigeration. The important part of the curve...

You only need a single V belt. Many A6 compressors were single groove on some very large cars. There are ear mount V7 compressors, but to get one with a V belt you need to swap the clutch from a V5. The site sponsor can probably help you with the hybrid V7 compressor. https://www.ackits.com/ The V7 ...