Quote:
Originally Posted by Hit Man X
I have been using the big Astoria Flexx gun with boots. Work well for me.
Skip the R4 compressor, it is junk. I went around and around with new and good used ones, they all seemed to want to leak. Either case seals or those damned stepped ports.
Same with the 134A on the early condenser. You simply will not have good output, it may work marginal on the '85 units. I bought a drop in PF kit from Klimakit.com nice stuff, this for R12 as the '85 MY condensers are impossible to find. They also have a very nice Sanden kit, it is on my car too. I did a write up about it in the Diesel section a while back.
Stock evaps are pretty good quality, but at this age I am sure it is full of debris that restricts it ability to pull heat.
Quality tint helps big time also for A/C performance.
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Beware the Nissens heater core. Dunno about Gen1 w126, but I got a Nissens for my 300SE and the stupid keyways for the coolant tubes were in the wrong place. I had to dremel out the tubes to make it work. I also replaced several vacuum pods on the hvac assembly, as well as replacing all the deteriorated foam seals with billiard felt for the flaps, and caulk for the case seals. Taking that thing out is a bear of a job, you have to pull the whole center console and dash. Be prepared to replace anything in there that looks aged while you've got it apart. Go ahead and do all the small bulbs while you're in there and REALLY test those vacuum pods with a mityvac or similar. Some of those are impossible to get at with the unit installed, so this will be your one chance to get them.