[PorscheTTS]

quick question, what is estimated cost to convert the original AC over to the most current AC system, rough price for complete parts/install, from a indy shop, im not a DIY guy, thanks

[TriumphTim]

Hi, congrats on the purchase!

I would probably ballpark around $2000... $1000 for parts, $1000 for install and troubleshooting, provided no other major issues come up.

Looks like there are kits out there. https://www.acsolutions.co/products/...42499461218544

I did a similar upgrade on an E34 M5, went pretty smoothly.

[PorscheTTS]

Originally Posted by TriumphTim

Hi, congrats on the purchase!

I would probably ballpark around $2000... $1000 for parts, $1000 for install and troubleshooting, provided no other major issues come up.

Looks like there are kits out there. https://www.acsolutions.co/products/...42499461218544

I did a similar upgrade on an E34 M5, went pretty smoothly.

that's what I was figuring, was quoted $6500 today, seems absurd

[pbonsalb]

New condenser, compressor, evaporator core, hoses, installation. It’s been at least a decade since I was under a 635 dash so I cannot say what is required. A complete replacement is time consuming and on a nearly 40 year old car, I would do a complete job. I’d guess 1-2 days of labor assuming the dash does not need to come out and $1000-2000 in parts. The $2000 estimate seems low to me and the $6500 seems high.

[Chihuahua]

Originally Posted by PorscheTTS

that's what I was figuring, was quoted $6500 today, seems absurd

absolutely absurd. I converted my friends '88 M3 over to R134a many years ago. We changed out the compressor, expansion valve, and drier to R134a compliant parts. After that it was all o-rings to R134a compliant o-rings. condenser stayed the same, hoses stayed the same. had a shop pull vacuum to make sure we didnt have a leak, charged the system and off we went. It worked well enough to be comfortable, the car isn't a daily driver. You're probably looking at 1000-1500 in parts, the toughest part of the job is getting to the expansion valve - I can't comment on how labor intensive it is to get to in an E24 but in the E30 it's pretty easy. 6500 is robbery.

[pbonsalb]

Many years ago, an 88 car was much younger. If you want to do the cheapest conversion possible then change as few parts as possible. You can always do the rest later.